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http://www.naic.edu/~phil/modhistory.html
Дата изменения: Wed Apr 6 21:21:35 2016
Дата индексирования: Sun Apr 10 00:18:12 2016
Кодировка:
modification dates for phil's home page:
cur year
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2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
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2005
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2004
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2003
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2002
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2001
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2000
06apr16
12m tsys vs elevation for sb,xb.
06apr16
12m pictures. elevation limit switches, handhold hitting back of dish.
04apr16
started page for design of 12meter control program.
02apr16
12meter: sefd from 1d gauss fits to model 3A az,el cross strips.
29mar16
12meter fitting 2d gaussians to sband crosses on 3C405 (Cygnus A)
29mar16
System performance for the feb16
29mar16
fractional occurrence of rfi for feb16
29mar16
Alfa Tsys for the month of feb16
29mar16
sitepower monitoring for month of feb16
29mar16
tiedown tensions for feb16
29mar16
ao weatherstation for feb16
29mar16
azimuth motor torques vs velocity for feb16
21mar16
13mar16: monitor 12meter xb totPwr for 16 hrs. totpwr jumps and ripple.
15mar16
12meter model3A made feb-mar16
15mar16
making the 12meter model
07mar16
12meter sband spectra shape change with time.
07mar16
12meter xband total power ripples coming from inside the 12meter pedestal.
16feb16
plasma line movies for 05feb16 world day run.. including usrp data.
15feb16
ALPACA (ao40) parallactic rotation times for +/- 15 deg rotator
11feb16
plasma line movies 06,07,08 feb16, usrp data.
08feb16
: 327 rfi: 04feb16.. turning the sband console on,off after removing external ups, power supply
08feb16
plasma line movies 05feb16
03feb16
327 rfi:4Mhz comb from sband console coming from ups outside of cabinet
02feb16
327 rfi: repairing the rfi gasket on the turret control box.28jan16
01feb16
327 rfi: cycling the power on the sband console after the cabinet shielding repaired.
01feb16
System performance for the jan16
01feb16
fractional occurrence of rfi for jan16
01feb16
Alfa Tsys for the month of jan16
01feb16
sitepower monitoring for month of jan16
01feb16
tiedown tensions for jan16
01feb16
ao weatherstation for jan16
01feb16
azimuth motor torques vs velocity for jan16
01feb16
a2130 caldeflection plots 15jan16-21jan16 shows alfa bm6b failing at low za.
29jan16
cband rfi. radioRedentor tower test. turning off, on cband internet providers.
28jan16
327 rfi. cycling the power on the sband console upstairs (before repairs)
27jan16
327 rfi. probing the sband console (upstairs) with the anritsu.
25jan16
327 rfi. high frequency resolution azimuth swings
25jan16
2370-2375 rfi from at&t turned off
22jan16
alfa bm6b bias values jumping around
20jan16
plasma line movies for 05-12jan16 world day run (echotek and usrp)
19jan16
rfi road trip to radioRedentor/HQ towers. 2370-2375 and 2400 Mhz rfi.
19jan16
rfi road trip to radio Redentor tower. rfi below 5150 Mhz.
18jan16
2370,2400 Mhz rfi seen from the 12 meter site
18jan16
rfi below 5150Mhz as seen from the 12 meter site
13jan16
rfi cband azswings. 5 ghz rfi.
13jan16
a2981 on 03jan16 saw 66khz comb at 1667.5621 Mhz
12jan16
turret does not arrive on position.. zero velocity offset error
11jan16
plots of wind velocity versus day of year for 2015
11jan16
plots of platform temperature for the year 2015
11jan16
yearly plots of tv station power vs time (from hilltop system) for 2015
11jan16
punta salinas freq table now limited access to ao network.
08jan16
System performance for the dec15
08jan16
fractional occurrence of rfi for dec15
08jan16
Alfa Tsys for the month of dec15
08jan16
sitepower monitoring for month of dec15
08jan16
tiedown tensions for dec15
08jan16
ao weatherstation for dec15
08jan16
azimuth motor torques vs velocity for dec15
08jan16
galfacts a2130 caldeflection plots for 28nov15 ->29dec15
08jan16
aeronomy t2963 plasma line movie for 04jan16-15jan16
04jan16
aeronomy t1193 usrp plasma line movies 151211, 151212
2015
20dec15
aeronomy t1193 usrp plasma line movies 1209, 1210
20dec15
aeronomy t1193 echotek plasmaline movies 1209 to 1213.
10dec15
System performance for the nov15
10dec15
fractional occurrence of rfi for nov15
10dec15
Alfa Tsys for the month of nov15
10dec15
ages (a2048) monitoring of data for month of nov15
10dec15
sitepower monitoring for month of nov15
10dec15
tiedown tensions for nov15
10dec15
ao weatherstation for nov15
10dec15
azimuth motor torques vs velocity for nov15
08dec15
update ut1 to utc fit (dut1) for pointing.
08dec15
usrp software for aeronomy datataking
08dec15
12meter added pictures of the receiver chain.
03dec15
hf: looking for the arcs below the reflector
02dec15
2397 Mhz rfi measured at 12meter site is coming from direction of yiyi's tower.
02dec15
5015-5055 mhz rfi seen from the 12meter with the anritsu.
23nov15
System performance for the oct15
24nov15
fractional occurrence of rfi for oct15
24nov15
Alfa Tsys for the month of oct15
24nov15
ages (a2048) monitoring of data for month of oct15
24nov15
sitepower monitoring for month of oct15
24nov15
tiedown tensions for oct15
24nov15
ao weatherstation for oct15
24nov15
azimuth motor torques vs velocity for oct15
24nov15
hf. added page with transmitted power during the nov15 hf run.
23nov15
hf. 30 second integration movie for herb.. 151111.
23nov15
hf. 151111. average on cycle, off cycle. and make images.
20nov15
hf 8.175 Mhz harmonics in the 430 band.
19nov15
added plasma line movies for all data taken during the hf heating run (except juha).
16nov15
nov15 hf heating campaign
12nov15
added ao fcc transmit licenses document
09nov15
clp movie of hf run on 06nov15 with .5 sec integrations
04nov15
hf: 02nov15. 6 tx on sky. calibrate phase,monitor ports, az,za swings
29oct15
hf: 6ant on sky 80KW daytime.
27oct15
hf: added pictures of tx control cabinet.
26oct15
hf: measured operating values hv on, no rf for tx1,2,3,4,6
24oct15
hf: measured operating values page: meters and drive values
23oct15
hf: added plots, spectra from monitor port outputs (made from scope capture)
22oct15
hf tx1,4,5 on ant (80+ Kw), tx2 tripped drv AC A
22oct15
hf tx5 dummy load, plots of monitor ports from the tube stages
22oct15
hf calibration plots. synDriver dbFullScale vs dbm output
21oct15
hf calibration plots (rf coupler vs pwrOut, guidbf vs dbm output...)
17oct15
hf test 15oct15 trying to put all 6 transmitters on antenna.
17oct15
System performance for the sep15
17oct15
fractional occurrence of rfi for sep15
17oct15
Alfa Tsys for the month of sep15
17oct15
ages (a2048) monitoring of data for month of sep15
17oct15
sitepower monitoring for month of sep15
17oct15
tiedown tensions for sep15
17oct15
ao weatherstation for sep15
17oct15
azimuth motor torques vs velocity for sep15
14oct15
rfi at AO talk for CORF meeting
10oct15
06oct15:1670-1675 rfi on/off transmitter tests with lightsquared.
05oct15
430 Mhz transmitter rf pulse at 440 and 1000 useconds.
30sep15
retuned notch filters for 2130 rfi.
30sep15
ftdr measurement of balun shorted to heliax outer conductor, dipole 3b
30sep15
measuring the resistance bewteen heliax and balun for dipole 3bb
29sep15
fast dump 327 Mhz (10usecs) to check s3043 sat arcing experiment
29sep15
uprm gpsstation to test on helipad. luis's screen room report
28sep15
high pot test of section of hf balun
28sep15
PolA Tsys 430ch 45K higher than TsysPolB
25sep15
t3045 sband 2 tone experiment 24sep15.
25sep15
pictures of dipole 3b balun showing arc from heliax to balun on 15sep15
25sep15
lbwPolB power changes by 35% in 50secs as 16K stage changes by 8 K
24sep15
t3045 sband 2tone exp for 23sep15.
23sep15
t3045 sband 2tone aeronomy experiment
22sep15
pictures of hf towers from AO9 and the rim road.
22sep15
pictures of hf heliax 3b damage from 15sep15 arcing
21sep15
lbw polb After dewar worked on.
14sep15
2380 Mhz rfi not being created in or after or 1st mixing stage.
11sep15
08jul15 wapp data taken with 1670-1675 rfi present
09sep15
System performance for the aug15
09sep15
fractional occurrence of rfi for aug15
09sep15
Alfa Tsys for the month of aug15
09sep15
ages (a2048) monitoring of data for month of aug15
09sep15
sitepower monitoring for month of aug15
09sep15
tiedown tensions for aug15
09sep15
ao weatherstation for aug15
09sep15
azimuth motor torques vs velocity for aug15
08sep15
added plasma line movie for 25-27mar11
07sep15
redid fits for using 3 distomats to measure platform height
02sep15
start page for 1670-1675 rfi.
25aug15
hf. added calorimeter fits for tx2 and updated the tx4 fit.
21aug15:
sbn azswings 09aug15: rfi: 2357-2367 2373-2390,2397-2412
19aug15
lbw PolB unstable. project a2812 reports problems with baselines.
18aug15
sband tx, water in the waveguide, S11 measurements
17aug15
System performance for the jul15
17aug15
fractional occurrence of rfi for jul15
17aug15
Alfa Tsys for the month of jul15
17aug15
ages (a2048) monitoring of data for month of jul15
17aug15
sitepower monitoring for month of jul15
17aug15
tiedown tensions for jul15
17aug15
ao weatherstation for jul15
17aug15
azimuth motor torques vs velocity for jul15
12aug15
venus run aug2015 10-12aug15
09apr15
pointing errors at noon using sbn in preparation for venus run.
07aug15
added /home/online/vw to its on repository (vwcfg)
07aug15
started documenting platform focus tracking.. getting ready to track with 3 distomats
06aug15
added plasma line movie for 20150715_17 t1193 run
05aug15
added plasma line movie for 20150709_13 t3002 run.
05aug15
added plasma line move for 20150609 t2975 run
05aug15
added plasma line movie for 20111128_29 t1193 run
08jul15
System performance for the jun15
08jul15
fractional occurrence of rfi for jun15
08jul15
Alfa Tsys for the month of jun15
08jul15
ages (a2048) monitoring of data for month of jun15
08jul15
sitepower monitoring for month of jun15
08jul15
tiedown tensions for jun15
08jul15
ao weatherstation for jun15
08jul15
azimuth motor torques vs velocity for jun15
27jun15
lbw calibration runs after lbw reinstalled in dome.
26jun15
hf first light daytime 18jun15, movies, images.
24jun15
added p2030 zaplist for rfi through 23jun15
23jun15
hf tx4 on dummy load.
23jun15
added electronic version of vertex manuals (those that i had). also added vertex error msgs.
23jun15
azimuth encoder 1 fails 22jun15, gets replaced.
22jun15
recomputed utc-ut1 for leap second 01jul15
17jun15
rfi from the anritsu synthesizer in the if/lo cabinet in the dome.
15jun15
added page describing cband polbox from 2005
12jun15
upstairs 1st LO goes from 1Hz to 1Khz frequency resolution.
12jun15
anritsu mg3692c synthesizer used to replace upstairs 1st lo. rfi measured in screen room.
10jun15
look for stereob signal at xband.
10jun15
System performance for the may15
10jun15
fractional occurrence of rfi for may15
10jun15
Alfa Tsys for the month of may15
10jun15
ages (a2048) monitoring of data for month of may15
10jun15
sitepower monitoring for month of may15
10jun15
tiedown tensions for may15
10jun15
ao weatherstation for may15
10jun15
azimuth motor torques vs velocity for may15
09jun15
added page with bugs that need to be fixed in cima.
04jun15
hf dipole 3b (tx4). pictures of arcing damage.
04jun15
hftesting on antenna: 03jun15 tx4 reflectedPwr at 50KW, bursts from output stage, tx3: 100KW, no bursts
03jun15
hf testing: 02jun15. tx 100KW tx1,tx6. record data alfa bm0,and gr430. measure rf radiation levels.
02jun15
azswings with ao40 fat dipoles
01jun15
27may15 data: hf tx 6 on antenna, xmit 100kw, . take data with alfa az=360,240
29may15
stereob satellite recovery attempt on 28may15
27may15
hf data 26may15: tx 6 on antenna. xmit 20kw, take data with alfa. az=360.
27may15
started receiver protection/shutter page.
26may15
hf transmitter tx6 .14may15 on antenna to 34 kw.
25may15
dana's 2port measurments on sbw notched filter for aws rfi (at 2130)
25may15
hf transmitters. dummy load calibrations for tx1,3,4,6.
25may15
clp plasma line movie 22may15
23may15
clp plasma line movie 18-20may15
20may15
hf xmiter. adjusting the meters
16may15
System performance for the apr15
16may15
fractional occurrence of rfi for apr15
16may15
Alfa Tsys for the month of apr15
16may15
ages (a2048) monitoring of data for month of apr15
16may15
sitepower monitoring for month of apr15
16may15
tiedown tensions for apr15
16may15
ao weatherstation for apr15
16may15
azimuth motor torques vs velocity for apr15
16may15
calibration scans to check alfa after re installation
15may15
hfxmiter added index with page numbers for chapters, sections of Transmitter manual.
14may15
hf xmiter. 12may15 data. added partial calibration curve for Tx3
13may15
cummuings generator usage yr 2015, jan-may 2015
12may15
hf xmiter Calorimeter curves for tx4 .. from 07,08, and finale curve: 12may15
11may15
hf xmiter plots of dana's S21 rf coupler measurements
11may15
hf xmiter: added schematics and manual to web page.
11may15
hf xmiter: 150506: dummy load tx4, on antenna tx1,2. high time resolution.
04may15
hf low power tx into dipoles.monitor with 327 receiver.
04may15
hf dummy load tests.
29apr15
ao users committee talk RFI at AO
27apr15
hilltop rfi monitor image of lband radars. punta salinas in new mode A
24apr15
added 22apr14 exocube plasmaline movie.
20apr15
added noon time pointing run from 18apr18..
16apr15
start Heating Facility transmitter page
15apr15
computed ruze curves (surface error) for 2005,2009,2012,2013,2014,2015.
14apr15
punta salinas frequency upgrade. New xmit frequencies.
11apr14
measuring the average platform height with only 3 distomats
08apr15
updated stokes mueller matrix sources for sbh feb,mar15
08apr15
lbw polB jumping.. problem with rf cables.
02apr15
System performance for the mar15
02apr15
fractional occurrence of rfi for mar15
02apr15
Alfa Tsys for the month of mar15
02apr15
ages (a2048) monitoring of data for month of mar15
02apr15
sitepower monitoring for month of mar15
02apr15
tiedown tensions for mar15
02apr15
ao weatherstation for mar15
02apr15
azimuth motor torques vs velocity for mar15
01apr15
plasma line movie 17mar15 cme using 25Mhz bw and the the usrp.
25mar15
proposed band reject filter for 2110-2155 aws rfi in sbw.
25mar15
added plasma line movies for 150317 -> 150324 (cme..)
13mar15
: added page with nvidia gpu timing measurements
12mar15:
wombat disc array. can it handle usrp clp datarates?
03mar15:
How the sbw reciever handles the AWS rfi (2110 to 2155)
03mar15
System performance for the feb15
03mar15
fractional occurrence of rfi for feb15
03mar15
Alfa Tsys for the month of feb15
03mar15
ages (a2048) monitoring of data for month of feb15
03mar15
sitepower monitoring for month of feb15
03mar15
tiedown tensions for feb15
03mar15
ao weatherstation for feb15
03mar15
azimuth motor torques vs velocity for feb15
02mar15
clp plasma line movies.. added .mov (quicktime movie format for mac users).
28feb15
System performance for the jan15
28feb15
fractional occurrence of rfi for jan15
28feb15
Alfa Tsys for the month of jan15
28feb15
ages (a2048) monitoring of data for month of jan15
28feb15
sitepower monitoring for month of jan15
28feb15
tiedown tensions for jan15
28feb15
ao weatherstation for jan15
28feb15
azimuth motor torques vs velocity for jan15
23feb15
added t2961 usrproject page (herb and frank clp run)
05feb15
added usrp hardware page to describe the usrp's that we have.
05feb15
nanograv talk: rfi at AO.
29jan15
added page to describe the 12meter pointing model (work in progress).
29jan15
check p12m model2A on casA.
28jan15
added description of 12meter telescope logfile (written once a sec)
27jan15
added plasma line movie 25jan15_26jan15
26jan15
added plasma line movie 23jan15_24jan15
24jan15
added plasma line movie 19jan15 to 23jan15
15jan15
processed and put plasma line movies online.
13jan15
yearly platform wind speed plots. added year 2014
13jan15
yearly platform temperature plots. added year 2014.
12jan15
System performance for the dec14
12jan15
fractional occurrence of rfi for dec14
12jan15
Alfa Tsys for the month of dec14
12jan15
ages (a2048) monitoring of data for month of dec14
12jan15
sitepower monitoring for month of dec14
12jan15
tiedown tensions for dec14
12jan15
ao weatherstation for dec14
12jan15
azimuth motor torques vs velocity for dec14
2014
(
top
)
10dec14
System performance for the nov14
10dec14
fractional occurrence of rfi for nov14
10dec14
Alfa Tsys for the month of nov14
10dec14
ages (a2048) monitoring of data for month of nov14
10dec14
sitepower monitoring for month of nov14
10dec14
tiedown tensions for nov14
10dec14
ao weatherstation for nov14
10dec14
azimuth motor torques vs velocity for nov14
04dec14
12meter telescope. Comparing cross positions using track Array and ramp modes.
26nov14
System performance for the oct14
26nov14
fractional occurrence of rfi for oct14
26nov14
Alfa Tsys for the month of oct14
26nov14
ages (a2048) monitoring of data for month of oct14
26nov14
sitepower monitoring for month of oct14
26nov14
tiedown tensions for oct14
26nov14
ao weatherstation for oct14
26nov14
azimuth motor torques vs velocity for oct14
25nov14
observer computer fails to pass scrament packets on to cor,da crates
19nov14
keep track of location of aeronomy clp data files taken with echoteks
16oct14
start documenting the p12mProg ao 12meter control program.
09oct14
images of glonass sat position and channel power vs az,za using lbw.
09oct14
System performance for the sep14
09oct14
fractional occurrence of rfi for sep14
09oct14
Alfa Tsys for the month of sep14
09oct14
ages (a2048) monitoring of data for month of sep14
09oct14
sitepower monitoring for month of sep14
09oct14
tiedown tensions for sep14
09oct14
ao weatherstation for sep14
09oct14
azimuth motor torques vs velocity for sep14
04oct14
mock hires jumps in p2865 pulsar data. bitflips in fpga.
23sep14
added gpib over ethernet hardware page.
19sep14
added monturtemp to monitor the turret room temperatures
18sep14
looked at isee3 sat with s45 ephm. did not see it.
15sep14
added punta salinas coordination schedules and when they were sent to puntaSalinas.
15sep14
System performance for the aug14
15sep14
fractional occurrence of rfi for aug14
15sep14
Alfa Tsys for the month of aug14
15sep14
ages (a2048) monitoring of data for month of aug14
15sep14
sitepower monitoring for month of aug14
15sep14
tiedown tensions for aug14
15sep14
ao weatherstatio for aug14
15sep14
azimuth motor torques vs velocity for aug14
04sep14
added monthly plots from orion weather station.
04sep14
novatel gps antenna and receiver (for jade morton).rfi measured in screen room 22jan14
02sep14
updated coded long pulse (clp1shs) output file format
29aug14
rfi from sick dl100 distomat on the telescope
28aug14
rfi from sick dl100 distomat measured (31jul14) in screen room.
26aug14
orion weather station data now being moved to idl save files( monthly)
21aug14
adjusting turret backlash compensation board. turret has torque oscillation
20aug14
added turret logging program: turLogD
19aug14
reinstalling the chalmers amplifiers in sbn
13aug14
dynamic spectra of the glonass band taken 01aug14 thru 03aug14
11aug14:
p2030 pulsar search zaplists and periodicities created by puerto rican radars
08aug14
punta salinas radar not going to modeA when requested (starting jul14)
02aug14
wind speed during tropical storm bertha
01aug14
System performance for the jul14
01aug14
fractional occurrence of rfi for jul14
01aug14
Alfa Tsys for the month of jul14
01aug14
ages (a2048) monitoring of data for month of jul14
01aug14
sitepower monitoring for month of jul14
01aug14
tiedown tensions for jul14
tensions for jul14
01aug14
azimuth motor torques vs velocity for jul14
31jul14
panasonic video camera rfi measured in screen room
29jul14
updated ut1 - utc (dut1)
14jul14
System performance for the jun14
14jul14
fractional occurrence of rfi for jun14
14jul14
Alfa Tsys for the month of jun14
14jul14
ages (a2048) monitoring of data for month of jun14
14jul14
sitepower monitoring for month of jun14
14jul14
tiedown tensions for jun14
14jul14
azimuth motor torques vs velocity for jun14
27jun14
47 Mhz rcver on,off the crab nebula (data taken 03jun14)
16jun14
isee3. added 15jun14 data. also show sat. response to coherent mode
15jun14
on 09jun14 isee3 responded to coherent cmd request
10jun14
added 09jun14 isee3 data results.
09jun14
System performance for the may14
09jun14
fractional occurrence of rfi for may14
09jun14
sitepower monitoring for month of may14
09jun14
tiedown tensions for may14
09jun14
azimuth motor torques vs velocity for may14
07jun14
System performance for the apr14
07jun14
fractional occurrence of rfi for apr14
07jun14
sitepower monitoring for month of apr14
07jun14
tiedown tensions for apr14
07jun14
azimuth motor torques vs velocity for apr14
02jun14
plotted isee3 positions vs 2nd order polyfit.
28may14
measured positions for isee3 satellite
27may14
calibration scans after alfa reinstalled
23may14
updated isee3 page to contain data taken 09apr14 through 22may14
17may14
added timeline for lincoln lab observations
16may14
lincoln lab wideband kildall feed
13may14
punta borinquen radar blanking and sidelobe height from data taken 09may14.
12may14
faa radar blanking and sidelobe height from data taken 09may14
10may14
T2874 telescope, moon positions during 5,06may14 run.
08may14
faa and punta borinquen blanking check.
08may14
problems with Claro cell phone towers in Utuado.
08may14
night time plasma line movies.
07may14
t2874. haystack and AO looking at moon at 430 Mhz.
28apr14
a2703,a2808 report bad baselines on 20,21apr14 using lbw.
22apr14
the aerostat radar is back in operation.
20apr14
p2865 cbamd run 4-5 ghz on 13apr14 shows avg and rms spectra
15apr14
System performance for the mar14
15apr14
fractional occurrence of rfi for mar14
15apr14
sitepower monitoring for month of mar14
15apr14
tiedown tensions for mar14
15apr14
azimuth motor torques vs velocity for mar14
15apr14
detect tones from isee3 satellite (14apr14).
11apr14
distomat failures by hour of day (12mar14-11apr14)
10apr14
detect transmitted tones from isee3 satellite using sbw
09apr14
xmit an 8351 Mhz tone from the control room to the xb receiver.
04apr14
t2876 looking at the electron line.
03apr14
ao users committee talk for 04apr14
28mar14
22mar,26mar14 swarm satellite passes with 430 ch transmitter.
28mar14
5030-5070 Mhz , 5070-5100 out of band wifi emissions from yiyi's tower
25mar14
327 Mhz drifting birdie coming from calcontrol card in postamp chassis of sbn (same at 2004 lband drifting birdie)
18mar14
430 Mhz rfi with 10 sec period. signal strength vs azimuth at various locations.
17mar14
430 Mhz rfi with a period of 10 seconds.
14mar14
tilt sensor measurements after m8-4 cable repair
14mar14
fractional occurrence of rfi for feb14
14mar14
sitepower monitoring for month of feb14
14mar14
tiedown tensions for feb14
14mar14
azimuth motor torques vs velocity for feb14
13mar14
calibration runs 11,12mar14 after the m8-4 cable repair.
04mar14
324 Mhz rfi from meteor camera on antenna test shack.
27feb14
drifting birdie: 320-325 Mhz seen in p1693 pulsar search
23feb14
rfi seen in the p1693 327 Mhz pulsar search (during the cable repair)
20feb14
total power dropouts seen in p1693 327 Rcvr pulsar search data.
17feb14
added datatking connectivity page
14feb14
System performance for jan14
14feb14
fractional occurrence of rfi for jan14
14feb14
Alfa Tsys for the month of jan14
14feb14
ages (a2048) monitoring of data for month of jan14
14feb14
sitepower monitoring for month of jan14
14feb14
tiedown tensions for jan14
14feb14
azimuth motor torques vs velocity for jan14
14feb14
removing rfi from coded long pulse (clp) data
10feb14
added p1693 strips to observe during cable repair.
07feb14
removing rfi from the coded long pulse (clp) data.
05feb14
alfa bandpass (uncalibrate,calibrated for beam 0)
05feb14
compute backscatter gain ratio for the 430 dome.
23jan14
mock 4bit sband radar datataking. 280->40Mhz.noise + 20Mhz pncode.
22jan14
page showing damage to m8-4 splice cable from 13jan14 earthquake.
16jan14
mock 4bit sband radar datataking using 280->40Mhz mixing.
16jan14
faa radar blanking center increases by 1 deg.
16jan14
alfa winking cal shows total power variation of the calon,caloff.
14jan14
tiedown tension variations during the 13jan14 earthquake.
10jan14
yearly platform wind speed plots. added year 2013
10jan14
yearly platform temperature plots. added year 2013.
10jan14
System performance for dec13
10jan14
fractional occurrence of rfi for dec13
10jan14
Alfa Tsys for the month of dec13
10jan14
ages (a2048) monitoring of data for month of dec13
10jan14
sitepower monitoring for month of dec13
10jan14
tiedown tensions for dec13
10jan14
azimuth motor torques vs velocity for dec13
2013
(
top
)
12dec13
punta salinas radar blanking sector changed from 78 to 22 degrees around june 12.
10dec13
radar (sband) datataking with mock pdev spectrometer
09dec13
clp processing times on wombat computer using 15 and 30 threads.
04dec13
System performance for the nov13
04dec13
fractional occurrence of rfi for nov13
04dec13
Alfa Tsys for the month of nov13
04dec13
ages (a2048) monitoring of data for month of nov13
04dec13
sitepower monitoring for month of nov13
04dec13
tiedown tensions for nov13
04dec13
azimuth motor torques vs velocity for nov13
04dec13
testing 4 bit time domain radar sampling on the mocks.
04dec13
disc i/o rates: USB3, USB3 on megs3
04dec13
td 4 has erratic motion on 03dec13
02dec13
site generator startup with site as load (sundaty 01dec13)
01dec13
fraction of time gps l3 was seen in A2811,A2754 data during nov13
26nov13
gregorian dome motor 32 intermittently failing (amp32 bad)
23nov13
cgenstat program to look at cummings generator status
22nov13
added idl routines to access cummings generator data
22nov13
idl routines to access site power monitor data.
20nov13
monitoring the cummings generators while the sband tx in on.
15nov13
project a2880 looking at the IGM.
13nov13
System performance for the oct13
13nov13
fractional occurrence of rfi for oct13
13nov13
Alfa Tsys for the month of oct13
13nov13
ages (a2048) monitoring of data for month of oct13
13nov13
sitepower monitoring for month of oct13
13nov13
tiedown tensions for oct13
13nov13
azimuth motor torques vs velocity for oct13
08nov13
clp data taken with dome using Tamara's rdev spectrometer
07nov13
satellite orbits: velocity, angular velocity, period vs radius
06nov13
2d gauss fit to iode laser beam (for jonathan)
01nov13
faa radar begins blanking in ao direction.
01nov13
faa carsr radar specs
30oct13
plot filter shape and aliased power for mock lpdf decimations 2..15
25oct13
added dana's measurements of alfa shutter.
24oct13
process a2843 data.. (yale students).
23oct13
aprpp review committee presentation
14oct13
ao19 results: yfactors,SEFD vs frequency (using ao system)
12oct13
ao19 results: Yfactors on moon with and without the tertiary skirt
11oct13
ao19 results. Added byu images, plots
09oct13
ao19 results: x102 calibration runs, scans across the moon, sefd/yfactors from 03aug13
08oct13
System performance for the sep13
08oct13
fractional occurrence of rfi for sep13
08oct13
Alfa Tsys for the month of sep13
08oct13
ages (a2048) monitoring of data for month of sep13
08oct13
sitepower monitoring for month of sep13
08oct13
tiedown tensions for sep13
08oct13
azimuth motor torques vs velocity for sep13
07oct13
a2704 continuum mapping at 430 Mhz.
04oct13
punta borinquen (1275,1330) radar blanks in ao direction
17sep13
Minimum allowed dump times for mock spectrometer (16 bit spectra)
16sep13
added monsitepwr . monitors site power (only from linux)
13sep13
ripple seen in dome PolA. tapping on polA again makes jumps.
11sep13
added summary and detailed listing of what was done during ao19.
10sep13
updated pointing offsets for sbw,cband after reinstall following ao19 tests.
07sep13
System performance for the aug13
07sep13
fractional occurrence of rfi for aug13
07sep13
Alfa Tsys for the month of aug13
07sep13
ages (a2048) monitoring of data for month of aug13
07sep13
sitepower monitoring for month of aug13
07sep13
tiedown tensions for aug13
07sep13
azimuth motor torques vs velocity for aug13
09aug13
System performance for the jul13
09aug13
fractional occurrence of rfi for jul13
09aug13
Alfa Tsys for the month of jul13
09aug13
ages (a2048) monitoring of data for month of jul13
09aug13
sitepower monitoring for month of jul13
09aug13
tiedown tensions for jul13
09aug13
azimuth motor torques vs velocity for jul13
04aug13
Yfactors, sefd, and ratios for ao19 on J0603+219 taken 03aug13
13jul13
picture of drag link disconnected from connection plate.
11jul13
p2717 327 data taken with puppi in 26jun13 shows avg spectra, rms, rfi with 10 sec period.
05jul13
xband polA instabilites went away when cband high bias box was used.
05jul13
ephemeris tracking added to the online pnt command.
05jul13
started documenting the online aotcl pnt (pointing command)
04jul13
refit utc-ut1 (dut1) for 05jul13 thru 30sep13.
04jul13
System performance for the jun13
04jul13
fractional occurrence of rfi for jun13
04jul13
Alfa Tsys for the month of jun13
04jul13
ages (a2048) monitoring of data for month of jun13
04jul13
sitepower monitoring for month of jun13
04jul13
tiedown tensions for jun13
04jul13
azimuth motor torques vs velocity for jun13
03jul13
instabilities seen in xband receiver jun13.
01jul13
fit dome motor torques by month (after hydraulic brake). Shows dome weight.
19jun13
gregorian dome amp,motor failure
08jun13
System performance for the may13
08jun13
fractional occurrence of rfi for may13
08jun13
Alfa Tsys for the month of may13
08jun13
ages (a2048) monitoring of data for month of may13
08jun13
sitepower monitoring for month of may13
08jun13
tiedown tensions for may13
08jun13
azimuth motor torques vs velocity for may13
05jun13:
measure 3rd harmonic of 102.9,104.1 with a dipole.
05jun13:
cband 5-6 Ghz bandpass on the telescope after 5020 rfi turned off.
04jun13:
Source of 5020 rfi. Internet communications outside the U-NII band
01jun13
3rd harmonics and intermods of fm stations 102.9,104.1 from route 10.
31may13
The 5020 Mhz rfi is coming from yiyi avila's tower.
29may13
1419.963,1667.957 birdies from dustbin controller on az arm
25may13
testing lidar xband radar rfi in xband receiver. az swing.
22may13
rfi caused by the lincoln lab power on,off switch in the dome (18may13)
22may13
added plots of rfi peaks during mit feed azswing 20may13
20may13
telescope position for rfi azswing done with mit feed 20may13
20may13
telescope position for star patterns done 17may13 with mit feed.
20may13
added rfi scan 150 to 3 ghz using mit lincoln lab feed,lna's
09may13
added manual for the gps1 receiver (our original gps receiver)
09may13
narrow band tone at 1200 Mhz.
06may13
added page for mit lincoln labs wideband feed.
06may13
System performance for the apr13
06may13
fractional occurrence of rfi for apr13
06may13
Alfa Tsys for the month of apr13
06may13
ages (a2048) monitoring of data for month of apr13
06may13
sitepower monitoring for month of apr13
06may13
tiedown tensions for apr13
06may13
azimuth motor torques vs velocity for apr13
02may13
tiedown tensions for apr13. When do the tiedowns lose tension..
29apr13
measuring the punta Borinquen radar blanking in the AO direction.
29apr13
check lbw filterbank on 22apr13 by switching between filters.
24apr13
new punta borinquen carsr 1274,1332 Mhz radar
23apr13
added lbw rfi filter bank page
22apr13:
a2765 dps processing on 21apr13 using xband.jumps in adjacent bands.
13apr13
System performance for the mar13
13apr13
fractional occurrence of rfi for mar13
13apr13
Alfa Tsys for the month of mar13
13apr13
ages (a2048) monitoring of data for month of mar13
13apr13
tiedown tensions for mar13
13apr13
azimuth motor torques vs velocity for mar13
11apr13:
cband 4920 rfi present 06apr13-09apr13.
10apr13
a2749. started daily monitoring of their data. polB had drift at start of run.
09apr13:
a2749 using lbw had polB drift by 2% for the first 45 minutes of run.
06apr13
cband 5-6 ghz azswings done 28aug12.
04apr13
added alfa shutter page.
03apr13
started ao19 phased array feed page.
03apr13
netgear gsm7238fs network switch. Measured 17oct12 by luis in the screen room.
03apr13
dome 430 polA tsys close to 400 K during afternoon Tsys measurements.
01apr13
netgear prosafe gs110tp network switch. Emissions Measured 06sep2 by luis in the screen room
01apr13
netgear prosafe gs110t network switch. Emissions measured16oct12 by luis in the screen room
31mar13
Softek ivuloto device at visitors center. measured 15oct12 by luis in screen room.
28mar13
p2787 pulsar observing (27mar12) had spectral jumps from digital filter in mocks.
27mar13
rserv2 bulldozer fftw times using kernel 3.4.33. multithreaded ffts improved.
27mar13
6900-7050 rfi seen 11mar13,16mar13 by chris salter
25mar13
xmitting tone from control room patio: Mapping screen room birdie strength to detectability on the telescope
23mar13
azimuth peak with za=17deg and transmitting from control room patio.
23mar13
elo touch screen cash register emissions: in screen room and on telescope.
21mar13
added daily monitoring of site power
12mar13
rfihilltop will plot multiple days of rfi hilltop monitor data. dynamic spectra or daily averages.
12mar13
System performance for the feb13
12mar13
fractional occurrence of rfi for feb13
12mar13
Alfa Tsys for the month of feb13
12mar13
ages (a2048) monitoring of data for month of feb13
12mar13
tiedown tensions for feb13
12mar13
azimuth motor torques vs velocity for feb13
08mar13
added page with radar calibration satellites.
06mar12
measure rfi from touch screen cash register in screen room (for cafeteria).
05mar12
trelectronics LB65 distomat tested for rfi in screen room.
04mar13
td 4 position jumps to 24 inches and back on 02,03mar13
28feb13
look at new rf monitor installed at the visitors center.
23feb12
galfacts see wideband rfi in alfa on 14feb13.
21feb12
updated software measurements page. fftwV3.3.3 and added some comparisons.
15feb13
added amd software documentation page.
15feb13
rserv2 (amd 6272 64 core machine) fftw timing results using avx instructions.
14feb13
sine wave test 04feb13 with aeronomy rdev device.
13feb13
cband calibration run after dewar reinstalled in dome.
10feb13
added t2686 (herb and frank) userproj page. plasma line images once an hour for run.
07feb13
System performance for the jan13
07feb13
fractional occurrence of rfi for jan13
07feb13
Alfa Tsys for the month of jan13
07feb13
ages (a2048) monitoring of data for month of jan13
07feb13
tiedown tensions for jan13
07feb13
azimuth motor torques vs velocity for jan13
04feb13
added daily plots of dewar bias voltages and currents for single pixel receivers.
02feb13:
cband polB instability at crosshead freq. also seen in stage 2 drain current.
01feb13:
x111 dynamic spectra for lband nov/dec12
31jan13
added manuals for "new" site power substation controller.
31jan13
added schematics, manuals for building II A/C unit.
31jan13
building II A/C schematics
28jan13:
spectrum analyzer at building 2 a/c unit shows rfi.
28jan13
preliminary 327 Mhz results for building 2 shutdown on 24jan13.
24jan13
azimuth encoder difference before/after az encoder 2 changed on 17jan13.
24jan13
mock spectrometer b4sXg0 PI FIFO overflow during galfacts observing.
23jan13
: az position for peak signal from building 2.
14jan13
simulate puppi a/d sampling errors.
13jan13
calibration data jun12-dec12. updated pointing offsets.
11jan13
nov12 horn position survey.
10jan13
yearly platform wind speed plots. added 2012
10jan13
yearly platform temperature plots. added 2012.
10jan13
System performance for the dec12
10jan13
fractional occurrence of rfi for dec12
10jan13
Alfa Tsys for the month of dec12
10jan13
ages (a2048) monitoring of data for month of dec12
10jan13
tiedown tensions for dec12
10jan13
azimuth motor torques vs velocity for dec12
2012
(
top
)
13dec12
performance of 430 dome cavity filter (with notches) in front of dewar.
13dec12
System performance for the nov12
13dec12
fractional occurrence of rfi for nov12
13dec12
Alfa Tsys for the month of nov12
13dec12
ages (a2048) monitoring of data for month of nov12
13dec12
tiedown tensions for nov12
13dec12
azimuth motor torques vs velocity for nov12
12dec12
oct-nov12 lbw Tsys increase. calibration data shows it's not a problem with the cals.
10dec12.
sbn compare old, new (out of focus) , new (in focus) calibration runs.
10dec12
07dec12 lbw cooldown. 16k stage took 1 hour.
07dec12
a2704 430 dome continuum mapping show polA ripples (after filter changed).
06dec12
430gr azswings on 30nov12. polA filter removed, tv station intermods, az dependence, time periodic birdies
04dec12
430gr, 19nov12 take spectra while moving radar,radio astronomy switch. Ripple in both positions.
03dec12
lbw dewar 16k stage took < 36 hours to cool down
27nov12
System performance for the oct12
27nov12
fractional occurrence of rfi for oct12
27nov12
Alfa Tsys for the month of oct12
27nov12
alfalfa (a2010) monitoring of data for month of oct12
27nov12
ages (a2048) monitoring of data for month of oct12
27nov12
alfa stability (using a2010 date) PolA/polB ratios for oct12
27nov12
tiedown tensions for oct12
27nov12
azimuth motor torques vs velocity for oct12
26nov12
430 dome x111 data from oct,nov12 show the polA ripple coming and going.
23nov12
new sbn receiver. calibration runs comparing old and new receiver.
22nov12
Pr Law title 23, Part I chapter 11: Radio-Astronomy Facility zoning act.
22nov12
fcc Arecibo coordination zone document
21nov12
cal values for new sbn receiver measured and installed.
16nov12
added rabbit bl2100 sbc documentation (used in rf radiation monitor).
14nov12
polA ripple in lbw from 1370 highpass filter rf switches.
14nov12
Tsys contribution various configurations of sbn postamps.
09nov12
added hardware page for cable car.
06nov12
a2713 dps with cband. 1 mock with glitches. 1 with ripple for 1 pattern.
02nov12
preliminary results from nov12 horn survey
31oct12
cband polA stage 2 drain current has large rms with amp#18, but not amp#19
24oct12
hilltop rfi monitor. Added schematics and program documentation.
22oct12
430 dome polB jennings relay causing little power from telescope to get to amps.
22oct12
a2415 430 mapping
15oct12
430 dome polB gain is 10% of the expected value.
11oct12
System performance for the sep12
11oct12
fractional occurrence of rfi for sep12
11oct12
Alfa Tsys for the month of sep12
11oct12
alfalfa (a2010) monitoring of data for month of sep12
11oct12
ages (a2048) monitoring of data for month of sep12
11oct12
alfa stability (using a2010 date) PolA/polB ratios for sep12ii
11oct12
tiedown tensions for sep12
11oct12
azimuth motor torques vs velocity for sep12
10oct12
alfalfa sep12 data shows long recovery times in beam1b with radars.
09oct12
mock spectrometer test with cband and pshift=0x1555 gets rid of spectral jumps.
09oct12
added page describing mock spectral jumps spaced by 2^n channels
07oct12
mock spectrometer fgpa dma overflow on b0s1g0 during a2130
04oct12
a2708 freqsw partial results.
02oct12
p2679 bits flips in mock highres mode.
01oct12
added table of all pdev spectrometers and their status.
28sep12
azwings with cband hi 6-7 Ghz shows rfi az dependence
28sep12
a2708 freqsw partial results.
27sep12
cband SEFD ratio PolA/Polb after polA amp change shows Tsys is different
27sep12
a2708 freqsw partial results.
20sep12
430gr TsysPolA is jumping by 10 to 15 K.
19sep12
installed new cband high cal values that were measured back on 28jun12.
17sep12
installed new cband cal values that were measured back on 28jun12.
14sep12
09sep12-11sep12: 2nd lo synthesizers 1-4 are stuck at at a fixed frequency.
11sep12
puppi: debugging 32 chan, 200 Mhz raw mode
05sep12
atm power profiles show cal dropouts.
03sep12
System performance for aug12
03sep12
fractional occurrence of rfi for aug12
03sep12
Alfa Tsys for the month of aug12
03sep12
ages (a2048) monitoring of data for month of aug12
03sep12
tiedown tensions for aug12
03sep12
azimuth motor torques vs velocity for aug12
30aug12
cband cable from bias chassis to dewar replaced on 29aug12.
29aug12
5275 Mhz Expernet (xairnet) internet test from jonathan friedman's house.
28aug12
27aug12 sbh bias box moved to cband. polA stage 2 drain current problem remains.
28aug12
added page with 2012 cband polA instabilities.
28aug12
interim correlator sbc4A band had a larger tsys than other sbc. Function of bandwidth.
24aug12
a2471 brown dwarf bursts at cband (alex).. processed data 2011,2012.
22aug12
monitor wind speeds during storm isaac
20aug12
cband the rms the rf power for polA increases while stage 2 bias drain current jumps around.
16aug12
xband cal values remeasured on 01jul12 installed 16aug12.
16aug12
added xband stokes plots
12aug12
lband wide cal values remeasured on 28jun12. installed 12aug12.
08aug12
sband tx. plot old and new voltage to power lookup tables for antenna power.
08aug12
added page " measuring the sband transmitted power."
08aug12
fractional occurrence of rfi for jul12
08aug12
Alfa Tsys for the month of jul12
08aug12
ages (a2048) monitoring of data for month of jul12
08aug12
tiedown tensions for jul12
08aug12
azimuth motor torques vs velocity for jul12
31jul12
sband transmitter. plot lro power meter values vs "antenna power" from 723 program.
31jul12
cband polB bias values jul12 show stage 2 currents polB jumping.
05jul12
fractional occurrence of rfi for jun12
05jul12
Alfa Tsys for the month of jun12
05jul12
ages (a2048) monitoring of data for month of jun12
05jul12
tiedown tensions for jun12
05jul12
azimuth motor torques vs velocity for jun12
05jul12
added rfi page for yiye avila's tower on roncador.
02jul12
check cband receiver (31may12) after it was reinstalled in the dome.
01jul12
bench marked intel avx routines using fftw-3.3.2 on megs3
01jul12
glitches in rf from alfa monitoring are only present with bias monitoring.
29jun12
added plots of rf monitor at visitor center: feb09-jun12
29jun12
refit dut1 (ut1-utc) for leap second second 01jul12
26jun12
sband narrow stokes calibration results (01jan07 -> 31may12)
26jun12
sband wide stokes calibration results (may03->31may12)
25jun12
cband stokes calibration results (16nov10 thru 31may12)
25jun12
sband high stokes calibration results (28jun04 thru 31may12)
25jun12
lband wide stokes calibration results (16jan11 thru 27may12).
25jun12
cband high stokes calibration results.
20jun12
pointing error as we tilt the platform. Computed and measured values.
19jun12
12 meter first light.
18jun12
pointing error as we move the platform vertically. computed and measured offsets.
18jun12
rfi in screen room from 12meter camera (measured by luis)
16jun12
tiltsensor az swings and za strips
16jun12
tiltsensor az swings
12jun12
p2030 data show dewarmonitoring and .838Hz birdie (but no 1.5 hz rfi)
09jun12
added page tracing sband body current signal through the schematics.
08jun12
distomat 6 loses alignment when test distomat mounted on it.
08jun12
added page describing cima changes for turning on,off alfa bias monitoring.
05jun12
model18 verify completed, model18 installed.
04jun12
fractional occurrence of rfi for may12
04jun12
Alfa Tsys for the month of may12
04jun12
ages (a2048) monitoring of data for month of may12
04jun12
tiedown tensions for may12
04jun12
azimuth motor torques vs velocity for may12
04jun12
fractional occurrence of rfi for apr12
04jun12
tiedown tensions for apr12
04jun12
azimuth motor torques vs velocity for apr12
02jun12
alfa dewar monitoring is creating periodic gain glitches in the receiver.
28may12
a2130 (galfacts) see galileo satellite interference at 1278.7 Mhz.
24may12
tilt sensor az swings. cband receiver in the lab
23may12:
strobe lights coming from yiye avila's tower on mount roncador.
22may12
added plots for a2430 browndwarf stokesV bursts (from dec09)
19may12
td8 releases by itself.
16may12
r2696 ( lro) run on the moon.
14may12
r2696 lro test run showing chirped transmitter pulse.
12may12
cband stage 2 polA drain current, still jumping around after switch to stage 3 circuitry.
11may12
faa radar ipps change by .3%. Dip switches for timing probably set incorrectly.
11may12
cband crosshead oscillation causes a 1% gain jump in Tsys.
10may12
cband stage 2 polA drain current jumps after bias adjusted on 09may12.
05may12
2394.5-2403.5 Mhz rfi coming from yiye avila's tower (roncador).
05may12
3rd harmonics of fm stations 102.9.104.1 from route 10.
03may12
calibration scans using alfa after reinstallation on 20apr12.
30apr12
tilt sensor measurements after td12 jack replaced.
24apr12
ao users committee talk for 2012.
23apr12
td12 jack replaced. New limits set
20apr12
327 rcvr cavity filter (before dewar) bandpass shape.
20apr12
added tiedown grounding page. Include resistance to ground measurements for td12
19apr12
td12 stops with foldback error. Needs large torques to move.. jack to be replaced.
18apr12
a2335 lbw 14apr12. rain causes lbw tsys to increase.
10apr12
fractional occurrence of rfi for mar12
10apr12
tiedown tensions for mar12
10apr12
azimuth motor torques vs velocity for mar12
04apr12
simulate linefeed gain vs za. Compare with measured values.
03apr12
can we replace the 430tx with a ring of amiser panels at the edge of the dish?
31mar12
terminate input to 430 rcvr at various places before amp looking at polA ripple.
28mar12
Plots showing ch430 transmitter modAnode not staying completely off after beam off.
28mar12
430 dome polA ripple while receiver on load.
22mar12
cband microwave interference at 5990-6020.
20mar12
added kollmorgen motor repair log.
17mar12
polA ripple 430 dome continues.
14mar12
fractional occurrence of rfi for feb12
14mar12
Alfa Tsys for the month of feb12
14mar12
ages (a2048) monitoring of data for month of feb12
14mar12
tiedown tensions for feb12
14mar12
azimuth motor torques vs velocity for feb12
12mar12
scramPuppi. monitor scramNet multicast packets and load puppi shared memory.
08mar12
2140-2150 rfi from Advanced Wireless System (AWS).
05mar12
pointing model18 created. Not yet installed.
29feb12
tiedown daily monitoring now includes status bits for all 3 tiedowns.
28feb12
refit ut1 - utc polynoimial for mar12 thru jun12
26feb12
tiedown 1 sec tick fiber distribution switched to 3 separate fibers.
24feb12
fractional occurrence of rfi for jan12
24feb12
Alfa Tsys for the month of jan12
24feb12
ages (a2048) monitoring of data for month of jan12
24feb12
tiedown tensions for jan12
24feb12
azimuth motor torques vs velocity for jan12
22feb12
mock spectrometer dump status timeouts resolved.
20feb12
tiedown 4 tmscounter time drifting.
20feb 12
b6sNg0 (pdevs7) continues to timeout on while taking data.
17feb12
puppi first light 14feb12 with lbw. Radars are saturating.
16feb12
azswings with tilt sensors to check "new" td positions. 15,16may12.
13feb12
10feb12 changed td a/d signal conditioning resistor for spdmon from 46.2k to 22k.
11feb12
debugging problems with pdev: integration stops early
08feb12
added schematics for jon hagens 430 transmitter manual
07feb12
hp87130 errors rfattn polB does not switch.
02jan12
move td's, read output voltages, and then compare with readback values.
01feb12
updated scramnet and multicast data documentation.
29jan12
.shs clp processing times using 45 threads on rserv1.
29jan12
16jan12 reflection coef measurements of 430 Tx waveguide. Reflections and losses.
28jan12
table of distance along 430 waveguide using waveguide section lengths from hagen's manual
27jan12
steps taken when making a pointing model.
27jan12
azencoder 1 replaced. pictures of how far the pointer at 270 moved.
25jan12
tiedown commanded and amplifier readback speed mismatch.
23jan12
azimuth encoder difference after enc1 coupling tightened.
20jan12
corcom ac power line filters.
10jan12
yearly platform temperature plots for 2011
10jan12
yearly windmeter meter plots for 2011
10jan12
fractional occurrence of rfi for dec11
10jan12
Alfa Tsys for the month of dec11
10jan12
ages (a2048) monitoring of data for month of dec11
10jan12
tiedown tensions for dec11
10jan12
azimuth motor torques vs velocity for dec11
2011
(
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)
13dec11
description of merging multiple sps atm ipps for T2574
11dec11
10dec11 sband log plots
07dec11
alfa filter bank switching test.
06dec11
replacing the tiedown control system.
05dec11
rediscovering the Galaxy using atm az swings.
05dec11
rfi from vlfant from sri. azswing (narrow band) around 1400Mhz.
05dec11
fractional occurrence of rfi for nov11
05dec11
Alfa Tsys for the month of nov11
05dec11
alfalfa (a2010) monitoring of data for month of nov11
05dec11
ages (a2048) monitoring of data for month of nov11
05dec11
alfa stability (using a2010 date) PolA/polB ratios for nov11ii
05dec11
tiedown tensions for nov11
05dec11
azimuth motor torques vs velocity for nov11
30nov11
fractional occurrence of rfi for oct11
30nov11
Alfa Tsys for the month of oct11
30nov11
alfalfa (a2010) monitoring of data for month of oct11
30nov11
alfa stability (using a2010 date) PolA/polB ratios for oct11ii
30nov11
tiedown tensions for oct11
30nov11
azimuth motor torques vs velocity for oct11
28nov11
alfa beam 2a shows some jumps in ages data.
27nov11
added page with plots of sband transmitter log files.
25nov11
azimuth encoder difference after az encoder 2 replaced.
25nov11
added daily summary plot for az,gr,ch.
19nov11
sband antenna power vs lro power meter.
15nov11
page for programmable ac power strip:
08nov11
possible 2 mhz comb in 327 receiver.
08nov11
rfi from alfa motor controller at 327 Mhz measured 03nov11.
07nov11
Looking for rfi from the visitor center by shutting off its power (01nov11)
07nov11
xmitting from the visitor center platform to find the azimuth peak (01nov11)
04nov11
puntas salinas creates intermods in a2130 data 02nov11.. added a2130 overflow counts
31oct11
added documentation for corstripch interim cor stripchart program.
30oct11
td 4 makes load noises 27,29oct11.
30oct11
i/o rates 29nov11 on pdevs discs during p2627 (VoltSampling),p2010,a2130(galfacts)
27oct11
fit C0,1az, 3az pointing errors for alfa after reinstallation in sep11.
26oct11
a2621 on/off and dps patterns using 800 Mhz rcvr.
24oct11
alfa calibration scans sep_oct11 after alfa reinstalled.
22oct11
19oct11 cleaning alfa fiber connectors jumped bm1a Tsys to 150K.
20oct11
174 khz ripple in alfa fibers after fiber connectors were cleaned (data from 19oct11)
18oct11
174 khz ripple in alfa fibers measured using galfa data from 14oct11
18oct11
added page for galfa spectrometer software
17oct11
2401.5 Mhz rfi moves down to 2396.5 on 08oct11.
17oct11
fractional occurrence of rfi for sep11
17oct11
Alfa Tsys for the month of sep11
17oct11
alfalfa (a2010) monitoring of data for month of sep11
17oct11
alfa stability (using a2010 date) PolA/polB ratios for sep11ii
17oct11
tiedown tensions for sep11
17oct11
azimuth motor torques vs velocity for sep11
14oct11
added a2130 caldeflection plots for start of oct11 run (07-13)
12oct11
added monthly plots of ism band from hilltop monitoring. Show 2395 rfi.
11oct11
Beam 4a tsys while dana took data with the spectrum analyzer.
08oct11
added rfi page for AC units above buildings I and II.
07oct11
alfa a2010 total power: bm4a with low drain current and bm6b failure
04oct11
alfa bm6b power drops out 03oct11.
02oct11
Aeronomy data page with clp clutter removal.
30sep11
6595 rfi, 30 Mhz wide seen by a2622 using cband Hi.
29sep11
1408 Mhz rfi coming from AC unit on roof of building I.
27sep11
alfa bm5a dropout seen by alfalfa.
26sep11
1408 Mhz rfi in alfa data.
22sep11
moved software documentation on home page to software.html. reorganized it.
21sep11
added ryan seals thesis about the echotek card and digital receiver.
14sep11
mock time domain sampling on 1713+0747 at lband taken 11sep11
11sep11
8 bit rms vs adjpower value for time domain sampling.
10sep11
fractional occurrence of rfi for aug11
10sep11
tiedown tensions for aug11
10sep11
azimuth motor torques vs velocity for aug11
08sep11
sbn,alfa calibration runs to check alfa pointing after reinstallation.
01sep11
added alfa temps during cool down sequence on 16mar11
24aug11
430 power meter data (ladybug)
24aug11
wind speeds during tropical storm irene.
18aug11
table of intel IPP lib FFT times on aserv11 (my benchmark)
17aug11
lbw 1360.015 birdie. azswing shows not in the dome.
16aug11
430 dome polA ripple remains when radar/radioastronomy switch bypassed (11aug11)
16aug11
lbw 1360 narrow band rfi.
15aug11
.pdev file documentation for mock spectrometer.
15aug11
interim cor sbc1 polB spike in center of band for bw <=12.5Mhz
15aug11
intel performance primitives library fft times on aserv11 (intel benchmark)
10aug11
fractional occurrence of rfi for jul11
10aug11
tiedown tensions for jul11
10aug11
azimuth motor torques vs velocity for jul11
10aug11
short duration broadband rfi seen by p2558 in 327 rcvr.
06aug11
rdev data on telescope shows overflow wraparound.
05aug11
testing tamarra's rdev device using a sine wave
02aug11
fftw timing benchmark for aserv11 (nehalem) dual quad core machine.
01aug11
430dome polA ripples in a2599 dps data.
01aug11
added diagram (list) of pdev control programs and what they do).
31jul11
started online documentation for .pdev file formatt for mock spectrometer
28jul11
started online documentation for mock spectrometer psrfits file format.
28jul11
fractional occurrence of rfi for jun11
28jul11
tiedown tensions for jun11
28jul11
azimuth motor torques vs velocity for jun11
01jul11
galfacts beam2a caldeflection jumps by 4% 28,29jun11
01jul11
pointing corrections after removing 1az term from platform.
30jun11
added hagens 430 tx manual.
28jun11
tilt sensor 2 azswings 22jun11 to check 1 az term.
26jun11
galfacts (a2130) adc and pfb overflows for jun11 vs za.
25jun11
TRelectronics distomat (llb500) rfi test in screen room 15,23jun11
23jun11
mock spectrometer. tables of minimum allowable integration times.
23jun11
430gr polA ripples return.
22jun11
sbc3,4 of interim correlator Tsys increases by 3K. halfband 3,4 +5volt supply error.
17jun11
fit 1az term to new tiedown positions and add to model
15jun11
fractional occurrence of rfi for may11
15jun11
tiedown tensions for may11
15jun11
azimuth motor torques vs velocity for may11
10jun11
tested compressor monitor on telescope 06jun11 using 327 receiver
06jun11
tiedown 8 failure 110602. fixed 110606.
05jun11
a2335 (on 03jun11) sees lbw polB radar compression with long recovery time.
05jun11
plotted total power vs time for a2335 data mar11 thru 03jun11
25may11
a2335 see 1367 Mhz rfi on 18may11 (punta salinas chan 18)
24may11
added anritsu spectrum analyzer manuals.
23may11
adjusting stage 3 drain voltage for alfa bm1 fixed bm1a jumps
20may11
a2130 alfa beam1b caldeflection jumps with 20k stage diode temp.
18may11
rfi test accurange3000 distomat using 327 rcvr. (data taken 20apr11)
17may11
Tightening the polA Andrews connector fixed dome 430 polA ripple
16may11
Most active requestors of naic http daemon jan11-may11
13may11
compute new td offsets with tilt sensor and az swings.
12may11
tilt sensor az swings to compute new td positions to level platform.
11may11
fractional occurrence of rfi for apr11
11may11
Alfa Tsys for the month of apr11
11may11
alfalfa (a2010) monitoring of data for month of apr11
11may11
ages (a2048) monitoring of data for month of apr11
11may11
alfa stability (using a2010 date) PolA/polB ratios for apr11 -->
11may11
tiedown tensions for apr11
11may11
azimuth motor torques vs velocity for apr11
11may11
testing trelectronics distomat
11may11
rfi check during 1999 site power shutdown.. 430 and lband data.
09may11
testing accurange 3000 distomat replacement 28apr11.
05may11
a2130 caldeflection. added 13,14,15 apr11.
05may11
small jerks in turret motion while rotating.
05may11
430 dome polA shows irregularities in its bandpass.
04may11
a2130 caldeflection vs za. beam 4b increases at high za.
02may11
a2130 galfacts caldeflection shows alfa gain stability.
01may11
galfa bandpass ripples caused by fiber reflections.
26apr11
testing averaging of accurange 3000 distomat replacement.
26apr11
instabilities in alfa beam 1b seen by a2010,a2130,a2048.
19apr11
refit polynomial for dut1 (utc-ut1) apr11 thru apr12
15apr11
explain why mock single pix does not support winking cals tied to mock buffers.
15apr11
rfi testing of compressor monitor system in the screen room.
08apr11
rfi testing of iLon smartserver 2000 AC controller for buildings 1,2
07apr11
rfi testing of accurange3000 distomat.
07apr11
added stokes calibration 800 rcvr using 3C138 on 11mar11.
06apr11
az dependence of 327 rfi (fm stations) data taken 09mar11.
06apr11
fractional occurrence of rfi for mar11
06apr11
Alfa Tsys for the month of mar11
06apr11
alfalfa (a2010) monitoring of data for month of mar11
06apr11
ages (a2048) monitoring of data for month of mar11
06apr11
alfa stability (using a2010 date) PolA/polB ratios for mar11
06apr11
tiedown tensions for mar11
06apr11
azimuth motor torques vs velocity for mar11
04apr11
a2471 cband bursts. Look at stokes I variation various days.
31mar11
radar intermods in galfa spectrometer.
23mar11
mock time domain sampling of 1937+21 at lbw, and 430Mhz.
22mar11
a2335.. total power plots for some of the mar11 data.
15mar11
1357.2 Mhz rfi in lbw.
15mar11
fractional occurrence of rfi for feb11
15mar11
Alfa Tsys for the month of feb11
15mar11
alfalfa (a2010) monitoring of data for month of feb11
15mar11
ages (a2048) monitoring of data for month of feb11
15mar11
alfa stability (using a2010 date) PolA/polB ratios for feb11
15mar11
tiedown tensions for feb11
15mar11
azimuth motor torques vs velocity for feb11
14mar11
corrected 800 Mhz az,za offsets in pointing model
11mar11
added stokes calibration results for 800 Mhz rcvr
08mar11
800 Mhz rcvr bandpass, rms/mean, and sefd vs freq.
08mar11
rfi from alfa motor, dome cameras in 800 Mhz rcvr.
02mar11
327 rfi from:alfa motor controller, dome cameras, distomats.
02mar11
updated platform cycles to use change in unbalanced moment as definition.
28feb11
azswings at 327Mhz while transmitting a tone from the 12 meter.
25feb11
first look at 12meter rfi from inside the pedestal.
22feb11
rfi at 2380Mhz goes off when tower transmitter turned off.
22feb11
az swings done 19jan11 looking at 2380 Mhz rfi.
22feb11
completed mosaicing of a2415 430 Mhz maps
16feb11
alfa beam 2 has a 5.2 sec oscillation from the dewar bias monitoring.
15feb11
added dds synth page with bill sisk's schematics.
11feb11
counting the number of cycles performed on the telescope 2004.5 thru 2010
11feb11
measuring stability in the cband,iflo receiver with the shutter closed.
10feb11
fractional occurrence of rfi for jan11
10feb11
Alfa Tsys for the month of jan11
10feb11
alfalfa (a2010) monitoring of data for month of jan11
10feb11
ages (a2048) monitoring of data for month of jan11
10feb11
alfa stability (using a2010 date) PolA/polB ratios for jan11
10feb11
tiedown tensions for jan11
10feb11
azimuth motor torques vs velocity for jan11
10feb11
pointing errors after telescope beam reinforcement
04feb11
servo performance test results from 12meter acceptance test.
02feb11
pdev voltage sampling on psr0301+19 at 327 and 1410 Mhz
02feb11
lbw polB baseline ripple seen by a2335.
20jan11
rfi appears at 2380 Mhz
13jan11
fractional occurrence of rfi for dec10
13jan11
Alfa Tsys for the month of dec10
13jan11
alfalfa (a2010) monitoring of data for month of dec10
13jan11
ages (a2048) monitoring of data for month of dec10
13jan11
tiedown tensions for dec10
13jan11
azimuth motor torques vs velocity for dec10
13jan11
2010 yearly plots of wind velocity from platform.
13jan11
2010 yearly plots of platform temperature.
2010
(
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)
15dec10
327 Tsys vs ra,dec and galactic l,b 10may09 thru 13dec10. Plus TsysB-TsysB
13dec10
az swing shows that 734-740Mhz rfi is stable. FCC block B low 700Mhz Band.
09dec10
lbw warmup/cooldown cycle on 26/28 oct10 caused jump in Tsys.
09dec10
reduced 2010 lbw stokes data.
08dec10
fractional occurence of rfi for nov10
08dec10
Alfa Tsys for the month of nov10
08dec10
alfalfa (a2010) monitoring of data for month of nov10
08dec10
ages (a2048) monitoring of data for month of nov10
08dec10
alfa stability (using a2010 date) PolA/polB ratios for nov10
08dec10
tiedown tensions for nov10
08dec10
azimuth motor torques vs velocity for nov10
07dec10
A2335 low interim correlator power levels did not increase Tsys.
06dec10
A2335 switching to 750 narrowband IF caused power adjust problems.
03dec10
added links to articles showing FCC 700 Mhz plan and auctions
03dec10
reduced 2008/9 cband stokes data.
06dec10
switching to 750 narrowband IF caused power adjust problems.
01dec10
added FCC codes for puerto rico
29nov10
added cal dipole manual (thanks to dana..)
29nov10
azimuth dependence of 800 Mhz rcvr rfi.
29nov10
hilltop rfi monitoring. added dynamic spectra for last 8 days.
27nov10
reduced 2009 lbw stokes data.
24nov10
734.7-739.3 rfi in 800Mhz rcvr.
23nov10
orion weather station resets accumulated data on 04nov10.
22nov10
cband Tsys increases when horn gortex fabric cover comes loose.
22nov1
0 pointing errors and 1,2,3 az fits for oct,nov10 after u2-u2l3 beam repair.
20nov10
a2471 data processed... bursts at cband.
15nov10
added 46.8 Mhz transmitter control info.
12nov10
a2584 cband 1 ghz scan data.
10nov10
fractional occurrence of rfi for oct10
10nov10
Alfa Tsys for the month of oct10
10nov10
alfalfa (a2010) monitoring of data for month of oct10
10nov10
ages (a2048) monitoring of data for month of oct10
10nov10
alfa stability (using a2010 date) PolA/polB ratios for oct10
10nov10
tiedown tensions for oct10
10nov10
azimuth motor torques vs velocity for oct10
01nov10
started planetary radar software page.
26oct10
12 meter communication timing.
20oct10
scope image of protect turnoff timing for the 430 ch xmter.
18oct10
tdkips needed to move platform down 1 inch.
14oct10
plot a2335 data for 01oct10 thru 13oct10
11oct10
monitor lbw stability with 3 1800 sec drift scans.
07oct10
a2335 sees instabilities in polA and polB of lbw.
09oct10
fractional occurrence of rfi for sep10
09oct10
Alfa Tsys for the month of sep10
09oct10
alfalfa (a2010) monitoring of data for month of sep10
09oct10
ages (a2048) monitoring of data for month of sep10
09oct10
alfa stability (using a2010 date) PolA/polB ratios for sep10
09oct10
tiedown tensions for sep10
09oct10
azimuth motor torques vs velocity for sep10
07oct10
430 transmitter transmit pulse timing and constraints.
06oct10
alfa now included in the daily tsys plots. Also generated pdf files.
06oct10
430 transmitter: 1 Mhz chirp in tx samples.
01oct10
checking 1340 birdie after huffman box gasket changed.
30sep10
a2524 800 Mhz rcvr dps processing shows larger ripple in polA.
29sep10
4200 second integration lbw to check for stability.
28sep10
gps l3 on for 26 minutes in a2010 data.
28sep10
1340 tone coming from radar blanker 1340 Mhz lo.
28sep10
added td daily check output: position,dac values, rpms, torques.
27sep10
check stability 430gr receiver. dynamic spectra, avg spc, rms/mean, pwr vs time.
27sep10
scan lbw bands: dynamic spectra, avg spc, rms/mean and total pwr vs time.
27sep10
a2415 430 mapping.
26sep10
800 Mhz calibration run after reinstallation.
24sep10
5670 cband rfi 8 mhz wide. telescope and hilltop monitor.
22sep10
talk living with rfi at AO for puerto rican spectrum users group added.
22sep10
rfi hilltop monitoring page.. added pictures of equipment on hill.
19sep10
fractional occurrence of rfi for aug10
19sep10
Alfa Tsys for the month of aug10
19sep10
alfalfa (a2010) monitoring of data for month of aug10
19sep10
ages (a2048) monitoring of data for month of aug10
19sep10
alfa stability (using a2010 date) PolA/polB ratios for aug10
19sep10
tiedown tensions for aug10
19sep10
azimuth motor torques vs velocity for aug10
16sep10
mock narrow band spectra showing birdies close to DC.
14sep10
wapps beam5b jumps in power level (attenuators?)
10sep10
added platform beam reinforcement page.
09sep10
a2335 instabilities in lbw polb seen jul10.
05sep10
added page documenting svn repositories, working directories for code.
02sep10
byu phased array sensitivty from single dipole. absorber and crosses.
01sep10
wind at AO during hurrican earl.
23aug10
byuPhasedAr Beam A0-A6 position errors 19aug10.
19aug10
fractional occurrence of rfi for jul10
19aug10
Alfa Tsys for the month of jul10
19aug10
tiedown tensions for jul10
19aug10
ages (a2048) monitoring of data for month of jul10
19aug10
azimuth motor torques vs velocity for jul10
16aug10
byuPhasedAr Beam A1-A6 position offsets correcting for pointing errors.
13aug10
added monitoring of pdev hardware: fan, temps,voltages
11aug10
Mock spectrometer jumps in polA when in hi-res mode.
08aug10
added page describing pdev spectrometer diagnostics.
04aug10
430 klystron output of 1Mhz chirped signal.
08jul10
fractional occurrence of rfi for jun10
08jul10
Alfa Tsys for the month of jun10
08jul10
tiedown tensions for jun10
08jul10
ages (a2048) monitoring of data for month of jun10
08jul10
azimuth motor torques vs velocity for jun10
01jul10
added page to monitor pdev hardware (temps,fans,voltages)
30jun10
added page describing crontab file that makes the daily plots.
26jun10
added byu phased array page.
26jun10
updated byu phased array positions in focal plane and on sky.
09jun10
fixed za sin(3az) typo when installing model updates 04jun10
08jun10
testing the byu offsets equations using the turret motion.
06jun10
fractional occurrence of rfi for may10
06jun10
Alfa Tsys for the month of may10
06jun10
alfalfa (a2010) monitoring of data for month of may10
06jun10
alfa stability (using a2010 date) PolA/polB ratios for may10
06jun10
tiedown tensions for may10
06jun10
ages (a2048) monitoring of data for month of may10
06jun10
azimuth motor torques vs velocity for may10
04jun10
added plots of position offsets for byu feed in focal plane and on sky.
04jun10
update pointing models with 1,2,3 az fits to x102 data.
28may10
a2463. added plots for 27,28may10. listed bands with incorrec freqr 18-2may10
24may10
spectra jumps at power of 2 channels (23apr10 data)
24may10
mock spectrometer. test decimations 1-20. power,voltage,jumps,bandpass shape.
22may10
fractional occurrence of rfi for apr10
22may10
Alfa Tsys for the month of apr10
22may10
alfalfa (a2010) monitoring of data for month of apr10
22may10
alfa stability (using a2010 date) PolA/polB ratios for apr10
22may10
tiedown tensions for apr10
22may10
ages (a2048) monitoring of data for month of apr10
22may10
azimuth motor torques vs velocity for apr10
21may10
amman & whitney non-linear analysis of cables ok's cables for full range of motion.
21may10
a2463 w51 on/off-1
19may10
a2463 spectral jumps with power of 2 spacing.
16may10
5.8 magnitude earthquake 34 km from AO. Td tension variation.
11apr10
added documetation for masdmp,wasdmp to dump mock and wapp aofits files.
11apr10
added trackingtime routine to compute lst rise,transit,set as well as time in the keyhole
30apr10
added amman & whitney 29apr10 meeting presentation to limits page.
30apr10
testing the byumap pointing routine on a 3.5 jy src using lbw.
27apr10
included plot showing allowable dome za range vs temperature
27apr10
added 27apr10 stress table from amman & whitney modeling
24apr10
added time on source for byu sources.
15apr10
new operational limits for the telescope from ammann and whitney. (added minKips vs za)
11apr10
fractional occurrence of rfi for mar10
11apr10
Alfa Tsys for the month of mar10
11apr10
alfalfa (a2010) monitoring of data for month of mar10
11apr10
alfa stability (using a2010 date) PolA/polB ratios for mar10
11apr10
tiedown tensions for mar10
11apr10
azimuth motor torques vs velocity for mar10
04apr10
Cima fixed azimuth drift pattern does not perfom as expected at ao Declination.
31mar10
updated source tracks by declination to include 1deg steps in za.
30mar10
computing the unbalanced moments in the azimuth arm.
27mar10
rfi with 1.2 hz periodicity in lbw is from the crosshead.
24mar10
mock single pixel observing specifications.
19mar10
added linux datataking programs page.
17mar10
The range of za for dome and ch after repairing the broken beam.
17mar10
dome za that balances the azimuth arm with ch at stow (8.835)
16mar10
document aosock command. Socket i/o from tclInter in vxWorks.
16mar10
fractional occurrence of rfi for feb10
16mar10
Alfa Tsys for the month of feb10
16mar10
tiedown tensions for feb10
16mar10
azimuth motor torques vs velocity for feb10
10mar10
tiedown tensions vs az,za, and temp using 08-09 data.
09mar10
Repair of broken beam on the platform mar2010
07mar10
Dome weight page.
28feb10
added aeronomy programs page. clp processing.
28feb10
clp computational complexity
26feb10
added patriot 12 meter telescope page.
23feb10
byu phased array page.
22feb10
fit tiedown tensions using 2008,2009 data.
18feb10
notes for jim gould.
12feb10
updated network switches to show 10Gbit switches.
12feb10
fractional occurrence of rfi for jan10
12feb10
Alfa Tsys for the month of jan10
12feb10
alfalfa (a2010) monitoring of data for month of jan10
12feb10
alfa stability (using a2010 date) PolA/polB ratios for jan10
12feb10
ages (a2048) monitoring of data for month of jan10
12feb10
tiedown tensions for jan10
12feb10
azimuth motor torques vs velocity for jan10
10feb10
tension in tiedown cables during the 12jan10 haitian quake.
10feb10
p1693 327 receiver. 3 minute drift scan: dynamic and avg spectra.
08feb10
Converting positionSwitch data to Kelvins. C348,lwide, and mocks.
05feb10
dynamic loading of tiedowns from telescope motion.
03feb10
azimuth motion failures. amplifiers with dc offsets in speed output.
12jan10
calibration run on BYU 800 MHz antenna
11jan10
fractional occurrence of rfi for dec09
11jan10
Alfa Tsys for the month of dec09
11jan10
alfalfa (a2010) monitoring of data for month of dec09
11jan10
alfa stability (using a2010 date) PolA/polB ratios for dec09
11jan10
ages (a2048) monitoring of data for month of dec09
11jan10
tiedown tensions for dec09
11jan10
azimuth motor torques vs velocity for dec09
11jan10
2009 yearly plots of wind velocity from platform.
11jan10
2009 yearly plots of platform temperature.
2009
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)
16dec09
Stokes V sign is flipped if frequency band is inverted.
16dec09
disc i/o rates for pdevRaid with 5*1.5TB discs.
13dec09
rms baseline degradation of on,off position switching with position offsets.
13dec09
fractional occurrence of rfi for nov09
13dec09
Alfa Tsys for the month of nov09
13dec09
alfalfa (a2010) monitoring of data for month of nov09
13dec09
alfa stability (using a2010 date) PolA/polB ratios for nov09
13dec09
ages (a2048) monitoring of data for month of nov09
13dec09
tiedown tensions for nov09
13dec09
azimuth motor torques vs velocity for nov09
09dec09
table of radar intermods. added wapp first mixer results.
30nov09
Alfa outer beam position errors with mock cimafits and psrfits files.
20nov09
2.5 Mhz oscillations in alfa from bias box.
19nov09
alfa total power stability with leds on.
19nov09
alfa recover with the leds installed
18nov09
fractional occurrence of rfi for oct09
18nov09
tiedown tensions for oct09
18nov09
azimuth motor torques vs velocity for oct09
13nov09
sine wave into echotek card to check timing,frequency.
10nov09
converting spectrometer counts to kelvins with the cals.
08nov09
1375 Mhz rfi at lband.
05nov09
calibration scans alfa with alfa rotation angle measurement.
01nov09
added nvidia gpu page
26oct09
rdev coded longpulse data from carriage house. plasmalines.
21oct09
rdev sine wave test and topside data from 19oct09
20oct09
average bandpass for 800 Mhz receiver. data:12oct09
12oct09
added psrfits single pixel test dataffiles in stokes mode.
07oct09
cima online gui software. how svn is used to maintain it.
06oct09
fractional occurrence of rfi for sep09
06oct09
Alfa Tsys for the month of sep09
06oct09
alfalfa (a2010) monitoring of data for month of jul09
06oct09
alfa stability (using a2010 date) PolA/polB ratios for sep09
06oct09
tiedown tensions for sep09
06oct09
azimuth motor torques vs velocity for sep09
01oct09
24sep09 rdev test (tamarra's box) with 430 dome and coded long pulse
30sep09
added software packages page: fftw, livedata, predict so far.
28sep09
fftw performance on summer 1 cpu (xeon 5420 dual quadcor)
17sep09
800Mhz rcvr polB/polA gain,tsys, and sefd ratios jul09->14sep09
14sep09
11sep09 1390 rdr rfi appears in alfalfa data.
14sep09
fractional occurrence of rfi for aug09
14sep09
Alfa Tsys for the month of aug09
14sep09
alfalfa (a2010) monitoring of data for month of jul09
14sep09
alfa stability (using a2010 date) PolA/polB ratios for aug09
14sep09
ages (a2048) monitoring of data for month of aug09
14sep09
tiedown tensions for aug09
14sep09
azimuth motor torques vs velocity for aug09
07sep09
pdev maintenance procedures: replacing spectrometer box.
26aug09
aug09 lro 16,17,20,21 aug. positions and Stokes V of lro xmit.
25aug09
az dependence tv chn67 after turn off
24aug09
ran pdev raid disc i/o test.. pdevs6 raid is slow..
23aug09
fractional occurrence of rfi for jul09
23aug09
Alfa Tsys for the month of jul09
23aug09
ages (a2048) monitoring of data for month of jul09
23aug09
tiedown tensions for jul09
23aug09
azimuth motor torques vs velocity for jul09
14aug08
800 Mhz cals measured 13aug09 with new Tsys values.
13aug09
800 Mhz rcvr. tv chan 67 (789.25 Mhz) turns off.
11aug09
sband console rfi in 327 rcvr fixed 11 jun09.
10aug09
beam squint in the 800 Mhz rcvr.
10aug09
a2488 800 Mhz dps shows polB rms > polA rms.
10aug09
430 dome polA is unstable.
09aug09
rfi from azimuth encoders.
08aug09
Azimuth encoder1 errors 27jul09->04aug09
08aug09
pointing error that occurs during azimuth encoder1 failures
30jul09
fractional occurrence of rfi for jun09
30jul09
Alfa Tsys for the month of jun09
30jul09
ages (a2048) monitoring of data for month of jun09
30jul09
tiedown tensions for jun09
30jul09
azimuth motor torques vs velocity for jun09
29jul09
added 800 Mhz rcvr to system performance page.
03jul09
800 mhz calibration runs with cooled dewar.
02jul09
tsys vs freq cband, sbh over entire band.
29jun09
CalOn,offs. Averaging over the band vs fitting for wide bands.
18jun09
800 mhz rcvr. freq hop 750/753.7. source of rfi.
17jun09
800 Mhz rcvr. ripple appears in polB.
17jun09
mock,pdev minimum integration times vs fftlen
16jun09
calibration run 800 Mhz rcvr with room temp dewar.
14jun09
az swing 800 Mhz rcvr looking at 700-800 Mhz.
13jun09
first look at 800 Mhz feed with tv stations off.
10jun09
fractional occurrence of rfi for may09
10jun09
Alfa Tsys for the month of may09
10jun09
alfalfa (a2010) monitoring of data for month of may09
10jun09
ages (a2048) monitoring of data for month of may09
10jun09
tiedown tensions for may09
10jun09
azimuth motor torques vs velocity for may09
22may09
pdev raid disc i/o speed page
16may09
intermods seen in alfa/pdev
16may09
table of radar intermods created in alfa/pdev
14may09
rfi from lbw crosshead. data taken 05may09
10may09
fractional occurrence of rfi for apr09
10may09
Alfa Tsys for the month of apr09
10may09
alfalfa (a2010) monitoring of data for month of apr09
10may09
alfa stability (using a2010 date) PolA/polB ratios for apr09
10may09
ages (a2048) monitoring of data for month of apr09
10may09
tiedown tensions for apr09
10may09
azimuth motor torques vs velocity for apr09
08may09
lbw dewar warmup time.
07may09
Tsys 327 vs sky position jun08 -> may09
26apr09
rfi that looks like radar in alfa at 1403, 1424, 1475 Mhz..
24apr09
noise bump at 439 Mhz in 430 dome spectra when Tx Hv on.
20apr09
visiting committee talk.
13apr09
2 az swings with 800 Rcvr centered at 820Mhz.
12apr09
az motor 52 fail at az=326 on 11/12apr09
11apr09
gps l3 in a2010 data jan09-mar09
11apr09
low power tv stations seen in the 700-800 Mhz band.
08apr08
2 azswings with 800 rcv @760Mhz. chan62/50 peak values.
07apr09
fractional occurrence of rfi for mar09
07apr09
Alfa Tsys for the month of mar09
07apr09
alfalfa (a2010) monitoring of data for month of mar09
07apr09
alfa stability (using a2010 date) PolA/polB ratios for mar09
07apr09
ages (a2048) monitoring of data for month of mar09
07apr09
tiedown tensions for mar09
07apr09
azimuth motor torques vs velocity for mar09
06apr09
p2445 reports unstable power levels when using the 430 Mhz receiver
06apr09
430 dome spectrum at output of the dewar.
03apr09
azswings looking for birdies at 430 Mhz.
02apr09
planned usage of the 700 MHz band by emergency services.
20mar09
1422.5 Mhz birdie from channel 54.
19mar09
GPS L2, GLONASS L2, and compass E6 rfi in 1200-1300 MHz.
17mar08
1384,1424 birdies/tones seen in alfa.
11mar09
4.7 magnitude earthquake caused tension in td8 to vary.
10mar09
collect gps info/measurements to a single page.
10mar09
Gain vs frequency. Surface errors from the ruze curves.
10mar09
fractional occurrence of rfi for feb09
10mar09
Alfa Tsys for the month of feb09
10mar09
alfalfa (a2010) monitoring of data for month of feb09
10mar09
alfa stability (using a2010 date) PolA/polB ratios for feb09
10mar09
ages (a2048) monitoring of data for month of feb09
10mar09
tiedown tensions for feb09
10mar09
azimuth motor torques vs velocity for feb09
09mar09
telescope performance and datataking. ausac09 ppt presentation.
05mar09
updates to sband transmitter page.
01mar09
1385 Mhz birdie in alfa from aerostat. data from 22-23feb09.
23feb09
added page with psrfits datafiles that have been taken for testing.
23feb09
pdevs1. run scp while taking data to see %cpu used.
22feb09
added alfa monitoring of dewar temps,drainV,drainI,gateV
20feb09
arecibo radio telescope talk for teachers workshop.
18feb09
s2462 sband radar test 30jan09 with satellite orbiting the moon.
16feb09
pdev group 0,group 1 power ratios after 1db pads installed.
08feb09
fractional occurrence of rfi for jan09
08feb09
Alfa Tsys for the month of jan09
08feb09
alfalfa (a2010) monitoring of data for month of jan09
08feb09
alfa stability (using a2010 date) PolA/polB ratios for jan09
08feb09
ages (a2048) monitoring of data for month of jan09
08feb09
tiedown tensions for jan09
08feb09
azimuth motor torques vs velocity for jan09
04feb09
spectral scans with 800 Mhz rfi feed taken 18dec08
27jan09
psrfits2fil: convert pdev psrfits format to sigproc filterbank format.
20jan09
locations for 1db pads in pdev to equalize grp0,grp1 power levels.
20jan09
added some documentation on pdev adjusting the power levels.
18jan09
gpsL3 test baseband data taken 23sep08.
16jan09
fractional occurrence of rfi for dec08
16jan09
Alfa Tsys for the month of dec08
16jan09
alfalfa (a2010) monitoring of data for month of dec08
16jan09
alfa stability (using a2010 date) PolA/polB ratios for dec08
16jan09
ages (a2048) monitoring of data for month of dec08
16jan09
tiedown tensions for dec08
16jan09
azimuth motor torques vs velocity for dec08
14jan09
updated info on alfa motor controller page.
2008
(
top
)
16dec08
instructions for daily compressing of a2130 (galfacts) data.
15dec08
lbw cals remeasured 08dec08. installed 15dec08
14dec08
fractional occurrence of rfi for nov08
14dec08
Alfa Tsys for the month of nov08
14dec08
alfalfa (a2010) monitoring of data for month of nov08
14dec08
alfa stability (using a2010 date) PolA/polB ratios for nov08
14dec08
ages (a2048) monitoring of data for month of nov08
14dec08
tiedown tensions for nov08
14dec08
azimuth motor torques vs velocity for nov08
12dec08
update utc-ut1 for leap second on 01jan09
10dec08
gregorian motor torques during galfacts scanning
07dec08
monitoring pdevsN server cpu/disc with iostat.
05dec08
pdev spectrometer: setting the registers for 16 bit sampling.
02dec08
pdev running galfacts can't keep up data rate at 65 Mb/sec.
27nov08
trying to remove the 1400Mhz lbw resonance in software
19nov08
a2130 .. added list of files recorded..
18nov08
pdev winking cal occasionally starts with a phase offset.
18nov08
a2130 galfacts survey project page. info about files,compression..
09nov08
fractional occurrence of rfi for oct08
09nov08
Alfa Tsys for the month of oct08
09nov08
alfalfa (a2010) monitoring of data for month of oct08
09nov08
alfa stability (using a2010 date) PolA/polB ratios for oct08
09nov08
ages (a2048) monitoring of data for month of oct08
09nov08
tiedown tensions for oct08
09nov08
azimuth motor torques vs velocity for oct08
30oct08
Check how clean 839 Mhz is using hilltop monitoring data for oct08.
28oct08
wide spectral variations in upper half of ch band.
06oct08
fractional occurrence of rfi for sep08
06oct08
Alfa Tsys for the month of sep08
06oct08
alfalfa (a2010) monitoring of data for month of sep08
06oct08
alfa stability (using a2010 date) PolA/polB ratios for sep08
06oct08
ages (a2048) monitoring of data for month of sep08
06oct08
tiedown tensions for sep08
06oct08
azimuth motor torques vs velocity for sep08
01oct08
psrfits test program to time cfitsio i/o rates.
29sep08
sbw cal values updaed from 26sep08 cal measurements.
26sep08
lbw cals updated from 26sep08 cal measurements.
26sep08
alfa long recovery times vs alfa rotation angle. data taken 24sep08.
24sep08
pdev adc blanking of faa, remy 1290 radar. az=180, za=17 to 17.5
23sep08
alfa long recovery times after bias changes (on sky)
21sep08
check alfa stability after bias voltages changed.
18sep08
added idl routines for satellite predection at AO.
18sep08
alfa long recovery. modify 3a bias board. Change V,I bias for 3A and 3B
16sep08
alfa long recovery. Remove zener 3b, amp3 bias circuit. Modify Vd,I
16sep08
picture showing alfa, pdev layout.
12sep08
Modifying the bias currents with pulsed noise into the alfa horn.
05sep08
az strips with the 800 Mhz rfi feed looking for turret position.
05sep08
fractional occurrence of rfi for aug08
05sep08
Alfa Tsys for the month of aug08
05sep08
alfalfa (a2010) monitoring of data for month of aug08
05sep08
alfa stability (using a2010 date) PolA/polB ratios for aug08
05sep08
ages (a2048) monitoring of data for month of aug08
05sep08
tiedown tensions for aug08
05sep08
azimuth motor torques vs velocity for aug08
04sep08
22-28aug08 gps sv26 flies thru beam during proj a2010.
02sep08
measure pdev pfb overflow vs a/d rms and fftlen using a sine wave input.
29aug08
lbw cal values meaured and installed.
28aug08
fractional occurrence of rfi for jul08
28aug08
Alfa Tsys for the month of jul08
28aug08
ages (a2048) monitoring of data for month of jul08
28aug08
tiedown tensions for jul08
28aug08
azimuth motor torques vs velocity for jul08
27aug08
Pulsed noise into alfa horn shows long recovery is in dewar.
16jul08
tsys 327 vs date,hr,ra,dec
10jul08
pdev spectral bandpass shape and spectral jumps with low a/drms
04jul08
fractional occurrence of rfi for jun08
04jul08
Alfa Tsys for the month of jun08
04jul08
ages (a2048) monitoring of data for month of jun08
04jul08
tiedown tensions for jun08
04jul08
azimuth motor torques vs velocity for jun08
02jul08
lbw cooldowns.. omt stage not getting below 180K
25jun08
faa radar cause pdev a/d to overflow causing spectral artifacts.
25jun08
intermods/harmonics created when clipping a sine wave.
24jun08
modeling the faa radar total power period for pulsar observers.
24jun08
pdev spectrometer added list of datafiles taken by month.
23jun08
added tiedown loadcell locations and serial numbers.
23jun08
SEFDA/SEFDB for 327 rcvr shows TsysB/TSYSA=1.1
23jun08
added 327 dewar to receiver monitoring.
23jun08
11jun08 mot82 azTq reads nonzero when power off.
22jun08
fit 1az, 3az term to pointing runs to update model.
19jun08
pdev take 12 secs of data with galfacts setup (sitting 270,10).
15jun08
pdev time domain sampling does not have an 8bytes record header.
14jan08
pdev spectrometer specifications.
13jun08
added cal values for 327 cooled receiver.
13jun08
pdev spectrometer. spectral bandpass, rms vs Ashift param for 16 bit sampling.
12jun08
more a1300 calibrate oh spectra for tom..
10jun08
fractional occurrence of rfi for may08
10jun08
Alfa Tsys for the month of may08
10jun08
alfalfa (a2010) monitoring of data for month of may08
10jun08
ages (a2048) monitoring of data for month of may08
10jun08
alfa stability (using a2010 date) PolA/polB ratios for may08
10jun08
tiedown tensions for may08
10jun08
azimuth motor torques vs velocity for may08
09jun08
td 12 encoder interface board fails from lightning strike.
09jun08
added system performance by month page.
08jun08
started page with pdev fpga code
06jun08
added pdev link from home page
30may08
a1300 calibrate oh spectra for tom..
29may08
tiedown positions during the painting project.
24may08
platform, tiedown motion during vlbi cal scan 15may08
21may08
x102 run output from 20may08 cband.
19may08
a2327 dataprocessing.
16may08
process a2228 xband data looking for O2. check xband stability.
05may08
fractional occurrence of rfi for apr08
05may08
Alfa Tsys for the month of apr08
05may08
alfalfa (a2010) monitoring of data for month of apr08
05may08
ages (a2048) monitoring of data for month of apr08
05may08
alfa stability (using a2010 date) PolA/polB ratios for apr08
05may08
tiedown tensions for apr08
05may08
azimuth motor torques vs velocity for apr08
03may08
pdev spectral bandpass and rms vs ashift parameter for 8 and 16 bit packing.
02may08
gain and bandpass shape of the digital low pass filters of pdev.
02may08
a2390.. hi cal not firing at end of scan.
01may08
when faa radar broadcasts at 1330,1350.. 2008 thru april
26apr08
bbmixer compression levels from a sine wave input.
24apr08
pdev A/D rms values vs mixerGain and compression levels. On sky and noisesrc.
22apr08
lbw polb is noisier than polA.
21apr08
pnetctl information
08apr08
07apr08 td 8 stops moving. commandvel=0 and level jmps in torque readback.
06apr08
fractional occurrence of rfi for mar08
06apr08
Alfa Tsys for the month of mar08
06apr08
alfalfa (a2010) monitoring of data for month of mar08
06apr08
ages (a2048) monitoring of data for month of mar08
06apr08
alfa stability (using a2010 date) PolA/polB ratios for mar08
06apr08
tiedown tensions for mar08
06apr08
azimuth motor torques vs velocity for mar08
05apr07
pulsed power injected into alfa down converted to see long revcovery times.
05apr08
alfa if/lo system
25mar08
The za locations were alfa power jumps occur when at the meridian.
25mar08
alfa power jumps with long recovery times using pdev
17mar08
pdev spectral bandpass shape vs A/D input level and PSHIFTvalue.
14mar08
pdev bbm signal levels. Injecting a sine wave at the bbm input.
14mar08
input signal levels to generate a full scale a/d output for pdev.
10mar08
alfa power jump and long recovery time from radars using pdev.
09mar08
fractional occurrence of rfi for jan08,feb08
09mar08
Alfa Tsys for the months jan08,feb08
09mar08
alfalfa (a2010) monitoring of data for month of jan08,feb08
09mar08
ages (a2048) monitoring of data for month of jan08,feb089
09mar08
alfa stability (using a2010 date) PolA/polB ratios for jan08,feb08
09mar08
updated system performance page for jan08,feb08
08mar08
rdev filter shapes with 17 and 11 db roll off coefficients.
21feb08
az motor torques for motor group 1 and motor group 2.
20feb08
Added iflo block diagrams.
07feb08
check lbw sefdpolA/sefdPolB after adjusting the dewar biases.
06feb08
first start at params needed to config pdev from cima.
06feb08
az motor torques after amplifier pots adjusted.
05feb08
check lbw polB Tsys using sefd taken 18dec07
05feb08
spread in az motor torques jan08.
04feb08
added monthly monitoring of azimuth motor torques.
04feb08
added jon hagens vertex memos.
04feb08
check td12 after adjusting the current limit on amp.
21jan08
added table of filter programs to make ascii dumps of data and monitor files.
18jan08
pointing model gradients
18jan08
td 12 has been stopping off and on. Torque limit set too low.
11jan08
fractional occurrence of rfi for dec07
11jan08
Alfa Tsys for the month of dec07
11jan08
updated system performance page for dec07
11jan08
updated wind monitor page with yr 2007 summary
11jan08
updated platform temp page with yr 2007 summary
11jan08
added temperature sensor page in hardware devices.
09jan08
vertex motor, amp, compboard settings.
2007
(
top
)
16dec07
pointing model 17 after the painting project.
15dec07
status recommissioning telescope after the painting..
11dec07
plotted az motor torques from az swings. Motor 81's torque is too high.
11dec07
az bending errors.
10dec07
Moved td ref position using 10dec07 data then redid az swing to check 1az term.
10dec07
az swings measuring platform tilt.
09dec07
equalizing the tiedown positions after removing the lead in the platform corners.
07dec07
remeasure platform tilt using tilt sensors after adjusting with 06dec07 data.
06dec07
measure platform tilt with tilt sensors after painting with current td positions.
04dec07
more updates on aofits header.
27nov07
refit dut1 (utc-ut1) using data 27nov07 to 22nov08.
26nov07
notes on aofits header.
16nov07
added ntp entry to hardware page to keep track of ntpd measurements.
30oct07
pdev mixer i,q phase relation. added loband data with lo at 205 and 215
19oct07
added platform motions page to group all the platform motion measurements.
12oct07
setting the gain levels in the pdev spectrometer.
11oct07
simulating the fir portion of the polyphase filter bank for pdev.
10oct07
checking spectral output vs pdev dshift param.
01oct07
converting spectrum back to rms volts (notes to myself)
28sep07
simulating the gain of the digital low pass filters.
26sep07
bump in center of bandpass from mixture chassis stable in time.
26sep07
location of noise rms bits in DLPF processing (setting hr_shift).
20sep07
spectral increase +/- 3 MHz about center is gain related.
19sep07
noise spectra with and without the mixer chassis.
18sep07
pdev mixer bandpass using noise source.
29aug07
testing time domain dumping on the pdev spectrometer.
23aug07
monitor programs: montel, monpnt, montie, etc.. now run on linux
06aug07
Added how jmocks routines start,run, stop in pdev software documentation.
06aug07
recomputed lbw stokes plots using carl's latest and greatest fix.
04aug07
added software page for pdev software. What i'm doing and how to rebuild jeffs system.
04jul07
Pdev device. Looking at birdies close to dc with radar fpga (with 25Mhz filter).
01jul07
first look at pdev mixer chassis bandpass shape.
29jun07
computed stokes calibration data lbw for jan2006->jun07
21jun07
pdev accpetance testing. Updated with interim correlator comparison. Include on/off spectra.
14jun07
pdev acceptance testing. included the rest of the boxes. added rms vs integration time.
12jun07
pdev acceptance testing .. include longer integrations.
11jun07
p1978 wapp pulsar polarization runs but 2 rather than 1 diodes used.
06jun07
acceptance testing the spectrometer boxes.
09may07
Strong 60 hz seen in the 327 receiver 15apr07 to 03may07.
07may07
fractional occurrence of rfi for apr07
07may07
Alfa Tsys for the month of mar07
07may07
alfalfa (a2010) monitoring of data for month of apr07
07may07
alfa stability (using a2010 date) PolA/polB ratios for apr07
07may07
ages (a2048) monitoring of data for month of apr07.
07may07
updated system performance page for apr07
03may07
modeling the azimuth pointing errors.
02may07
recomputed the azimuth encoder runout (with a simpler method).
28apr07
frequency spectrum (cycles in 360 degrees) for the az encoder runout data.
26apr07
24apr07 pointing checks with sbn.
25apr07
added pdev spectrometer idl routines for testing
25apr07
added rdev radar processor routines for testing.
24apr07
23apr07 pointing checks with sbn.
22apr07
polA resonance lbw at 1400 Mhz gone after omt bolts tightened. PolB at 1395 still there.
22apr07
21apr07 pointing checks with sbn.
21apr07
20apr07 pointing checks with sbn.
21apr07
19apr07 pointing checks with sbn.
19apr07
included wind monitoring for the previous week.
19apr07
18apr07 pointing checks with sbn.
18apr07
What happens to the dome when we move the ch from 2 to 20 degs za.
18apr07
17apr07 pointing checks with sbn after alfa lowered.
18apr07
13apr07 pointing checks with sbn.
18apr07
plot focus curves feb03 and 2006 .
15apr07
The rotation angle on the sky when we rotate the platform.
13apr07
07apr07 tilt sensor azswings, adjust td's, after lead removed from corner 12.
13apr07
1330/1350 faa radar ipps back to normal sequence.
13apr07
07apr07 tilt sensor az swings and then readjustment of the tiedown reference.
13apr07
04apr07 tilt sensor azswings, adjust td's, more azswings after lead removed.
12apr07
12apr07 pointing checks with sbn.
12apr07
09apr07 pointing checks with lbw after installation in dome.
12apr07
11apr07 pointing checks.
12apr07
1330/1350 faa radar ipps jump by 9 useconds.
11apr07
10apr07 pointing checks.
11apr07
azimuth encoder 1 failed twice in the morning.
09apr07
encoder 1 fault 08apr07. eventually reset by power dip.
08apr07
07apr07 pointing checks after tiedowns reset to correct for weight removed from corner 12.
08apr07
05_06apr07 pointing checks after azimuth encoders reset.
07apr07
04apr07 dome local disable cable breaks. Both azimuth encoders reset.
06apr07
04apr07 pointing check after tiedown positions moved.
03apr07
radar seen 28mar07 in the serendip 5 spectrometer using alfa.
03apr07
02apr07 pointing checks after half the lead from corner 4 lowered.
02apr07
01apr07 pointing checks.
02apr07
fractional occurrence of rfi for mar07
02apr07
Alfa Tsys for the month of mar07
02apr07
alfalfa (a2010) monitoring of data for month of mar07
02apr07
alfa stability (using a2010 date) PolA/polB ratios for mar07
02apr07
updated system performance page for mar07
31mar07
31mar07 pointing checks after laser shack removed.
31mar07
tilt sensor az swings after laser shack removed.
31mar07
30mar07 pointing checks.
30mar07
tilt sensor az swings showing 1,3az terms prior to painting project.
29mar07
pointing checks before painting project started
08mar07
bad cable wapp 4 brd1 polB (alfa 6B) causes jumps in the gain
08mar07
fractional occurrence of rfi for feb07
08mar07
Alfa Tsys for the month of feb07
08mar07
alfalfa (a2010) monitoring of data for month of feb07
08mar07
alfa stability (using a2010 date) PolA/polB ratios for feb07
08mar07
updated system performance page for feb07
07mar07
added monthly monitoring of AGES a2048 alfa data.
06mar07
a2125 continuum mapping at 430 Mhz.
05mar07
when the faa radar transmits at 1330 and 1350 Mhz
05mar07
Added the faa radar page to the rfi pages.
19feb07
lbw beam maps computer from the calibration scans.
19feb07
amplifier 21,22 of dome going not ready.
17feb07
telescope performance talk for feb07 visiting committe.
13feb07
lbw sefd around 1100 Mhz with some rfi plots.
09feb07
refit alfa tsys using cal data 01jan05 thru 31jan07.
07feb07
gps l3 test on 06dec06 in the a2010 data.
06feb07
fractional occurrence of rfi for jan07
06feb07
Alfa Tsys for the month of jan07
06feb07
alfalfa (a2010) monitoring of data for month of jan07
06feb07
alfa stability (using a2010 date) PolA/polB ratios for jan07
06feb07
updated system performance page for jan07
02feb07
First look at the faa radar with the pdev spectrometer.
02feb07
measuring where the pdev specrometer satures (pfb sat.)
31jan07
if2 noise source test of pdev spectrometer. Include rms vs integration time.
23jan07
2 minute on/offs with pdev (jeffmocks new spectrometer)
20jan07
system performance page: llimit to 2000 pnts,.pdf files added, old data moved to separate page.
18jan07
added ao network switch contents.
12jan07
Platform temperature yearly summary plots for 2006.
12jan07
Windmeter yearly summary plots for 2006.
12jan07
fractional occurrence of rfi for dec06
12jan07
Alfa Tsys for the month of dec06
12jan07
alfalfa (a2010) monitoring of data for month of dec06
12jan07
alfa stability (using a2010 date) PolA/polB ratios for dec06
12jan07
updated system performance page for dec06
2006
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)
14dec06
large birdies at 418.625 and 419.2 Mhz.
11dec06
update the pointing models for sin(za) and 1 az terms.
10dec06
fit new value for UT1-UTC (dec06 thru jun07).
06dec06
4 az swings with tilt sensors at za=10 to measure platform residual tilt.
06dec06
Updated angle of tilt sensor on the rotary floor for data taken: 2005,2006.
05dec06
fractional occurrence of rfi for nov06
05dec06
Alfa Tsys for the month of nov06
05nov06
alfalfa (a2010) monitoring of data for month of nov06
05dec06
alfa stability (using a2010 date) PolA/polB ratios for nov06
05dec06
updated system performance page for nov06
28nov06
check the linearity of the programmable gain in the downstairs IFLO.
28nov06
pointing checks nov06 after az encoder error.
22nov06
a2125 430Mhz continuum maps of the individual fields.
21nov06
How well was encoder 1 realigned after the 14nov06 encoder failure.
12nov06
beam1a of alfa is noiser than the other beams.
07nov06
fractional occurrence of rfi for oct06
07nov06
Alfa Tsys for the month of oct06
07nov06
alfalfa (a2010) monitoring of data for month of oct06
07nov06
alfa stability (using a2010 date) PolA/polB ratios for oct06
07nov06
updated system performance page for oct06
31oct06
cable test lbw in upstairs iflo shows loose cables in 750 mixer chassis.
28oct06
az Encoder board failure 14oct06.
18oct06
looking at the rfi from the axis web camera.
12oct06
Dewar monitor failure was the upstairs ethernet repeater.
12oct06
added dewar monitoring hardware page.
09oct06
compare 614 khz comb strength with new and old encoders.
09oct06
added az,za encoder page. Include comb at 430 Mhz.
05oct06
az,za, time dependence of the 614 khz comb in 327.
04oct06
614 Khz comb in 327 Mhz reciever.
03oct06
added 327 birdies with azimuth dependence to the rfi frequency list.
03oct06
fractional occurrence of rfi for sep06
03oct06
Alfa Tsys for the month of sep06
03oct06
alfalfa (a2010) monitoring of data for month of sep06
03oct06
alfa stability (using a2010 date) PolA/polB ratios for sep06
03oct06
updated system performance page for sep06
29sep06
added alfa stablity, jan06 thru jun06.
28sep06
added alfa stablity page. Used a2010 data and ratio Pola/PolB added months aug06,sep06
25sep06
12 second radar at 1378 Mhz appears for 430 seconds on 05sep06
24sep06
fractional occurrence of rfi for aug06
24sep06
Alfa Tsys for the month of aug06
24sep06
alfalfa (a2010) monitoring of data for month of aug06
24sep06
updated system performance page for aug06
31aug06
new lbw cal values installed. measured 06jul06.
30aug06
cable sag measurements .. added avg td tensions.
29aug06
new cband cal values installed. Measured 06jul06.
24aug06
test the rf monitor at the visitors center with the 430 transmitters.
20aug06
Added daily monitor of tiedown tensions.
17aug06
430 Dome. Fit antenna gain vs frequency.
12aug06
check 430yagi performance after the feed was moved closer to the linefeed.
09aug06
noise/gain stability 4-6 ghz mmic, cbh using sqLaw det. and wapps
06aug06
fractional occurrence of rfi for jul06
06aug06
Alfa Tsys for the month of jul06
06aug06
alfalfa (a2010) monitoring of data for month of jul06
03aug06
test stability of mmic amp in cryo lab. also check cbh and noise src.
30jul06
test stability of mmic amp in cryo lab.
27jul06
added punta salinas radar page.
22jul06
punta salinas radar blanking test.
18jul06
az,za dependence of rfi using transmitted birdies.
17jul06
1200 Mhz narrow birdie.
14jul06
1188 Mhz birdie, 66 Mhz comb from kronos timecard reader.
13jul06
cat walk weight survey by felipe soberal
13jul06
added lbw sefd fits Mar03 thru jun06.
13jul06
added sefd page for receivers
13jul06
added sefd description page
10jul06
birdie near 1320 Mhz.
07jul06
az,za position and tiedown tensions during main cable sag measurements (mar06)
05jul06
fractional occurrence of rfi for jun06
05jul06
Alfa Tsys for the month of jun06
05jul06
alfalfa (a2010) monitoring of data for month of jun06
29jun06
updated system performance page for may06
29jun06
alfalfa (a2010) monitoring of data for month of may06
29jun06
Alfa Tsys for the month of may06
29jun06
fractional occurrence of rfi for may06
02jun06
430 yagi jumps are the rfi birdies with 1 minute periodicity
01jun06
System performance 430 yagi after capacitor repaired.
24may06
moved 430 yagi info from 430ch page to its own page.
12may06
Compare the focus curves for the old and new sb tx horn.
12may06
sband tx focus curve after the new horn was installed.
11may06
fractional occurrence of rfi for apr06
11may06
distomat birdies after the windows changed (corrected distomat numbering).
10may06
a1731 looking at the processe datamap,beammap, and uvdata.
07may06
performance of new sband tx horn.
03may06
distomat birdies after the windows were changed (data taken 07apr06)
03may06
updated system performance page for apr06
03may06
alfalfa (a2010) monitoring of data for month of apr06
03may06
Alfa Tsys for the month of apr06
28apr06
sband tx focus curve before the new horn was installed.
27apr06
focus curve using sbn rcv on J0745+101 (taken 25apr06).
26apr06
trendata ethernet switch rfi with and without fiber active.
21apr06
one of alfa's refrigerators fails on 18apr06.
21apr06
td12 startup trouble was digital i/o signal conditioning board
19apr06
the 750,40 Khz combs in 327 receiver coming from sband console in dome.
16apr06
750 Khz and 39.45 Khz combs in 327 receiver.
15apr06
testing the trenddata gigabit switch for rfi.
13apr06
added a2127 Xband data for 08mar06 and 03apr06.
11apr06
sbn cals meausured at 2380 and 2280..
11apr06
stokes calibration sbn new cals using 3C138. data daken 17feb06
09apr06
430 ch yagi performance after latest move.
08apr06
mars express quick look.
06apr06
updated my rfi page. Moved things from my home page to here.
05apr06
ntp time jumps on the wapps 2003-2006. What was causing them.
03apr06
added things to check when configuring a linux kernel for datataking.
03apr06
When the ntpd on aeron lost sync 2003-2006.
03apr06
updated system performance page for mar06
03apr06
alfalfa (a2010) monitoring of data for month of mar06
02apr06
fractional occurrence of rfi for mar06
01apr06
Alfa Tsys for the month of mar06
01apr06
echotek configuration causes i,q samples to not have a 90deg phase difference.
29mar06
Document vxWorks programs by vme crate.
28mar06
look at new Ac units. compare with older units to see if comb is gone.
27mar06
added radar decoding explanation to my notes.
19mar06
linefeed, yagi overlap at 100 km.
16mar06
A description of tiedown a/d signals
16mar06
td 12 does not always start up when it is commaned to.
14mar06
Start mechincal oscillations page.
14mar06
Azimuth encoder difference and the az encoder rack gear.
13mar06
total power oscillations while tracking the crab at cbh.
09mar06
Measure tsys for the 9 filters of lbw.
08mar06
Az encoder 2 (ch side) jumps.
07mar06
lbw cal polB . tapping on cables external to dewar to not change cal.
07mar06
lbw 1230-1470 filter look to see if Tsys changes as we switch it in /out.
07mar06
The jun05 warmup/cooldown of lbw actually caused resonances in polA and polB.
04mar06
lbw reran stokes analysis for dec05,jan06,feb06 to use new cal values.
04mar06
Alfa Tsys for the month of feb06
04mar06
fractional occurrence of rfi for feb06
04mar06
alfalfa (a2010) monitoring of data for month of feb06
03mar06
td 12 releases for 10 minutes.
03mar06
added idl routines to look at tiedown data.
02mar06
metmon: idl routine to monitor meteors. added positioning cabability
01mar06
added accessing the cal values page:
28feb06
remeasured lbw cal values after 04dec06 polB jump.
28feb06
lbw polB cal value jumps by 20% on 04dec05.
24feb06
Harmonics created in the alfa/wapp receiver with cfr=1385.
24feb06
added idl routine alfawappharm to compute location of harmonics in alfa/wapp.
17feb06
Added Ao serverlist.
15feb06 tried to make the different receiver pages a little more similar.
15feb06
put 430 dome cals in cals page (these values were measured back in 2001).
08feb06
Added yearly summary plots of windmeter data.
07feb06
The radar blanker multiplexor (calixto's box) needs to be worked on.
05feb06
Daily, yearly platform temperatures now on web.
04feb06
Daily windmeter data now on web.
03feb06
fractional occurrence of rfi for jan06
03feb06
alfalfa (a2010) monitoring of data for month of jan06
03feb06
Alfa Tsys for the month of jan06
03feb06
updated system performance page for jan06
01feb06
Added monitoring of wind meter data.
28jan06
check the azimuth encoder offset after the nov05 failure.
24jan06
47 Mhz On, off 3C348.0 (Hercules A) Tsys,gain,Beamwidth,sefd
24jan05
A first look at the 47 Mhz bandpass, dynamic spectra, rfi.
21jan06
rms voltage for optimum sampling with 2,3,4, and 5 bits.
18jan06
check the calibration source fluxes.
17jan06
compression in the alfa receiver with the 100 Mhz filter installed.
16jan06
28oct05 az swings with 327 showed birdies with 1 minute periodicities.
15jan06
wide band look at ac dome birdies in 327 Mhz reciever.
14jan06
3rd harmonics of fm stations in 327 receiver.
13jan06
placing a hipass and bandpass filter before the 327Rcvr first amp.
13jan06
check xband receiver after testing in lab.
11jan06
re arranged the rfi measurements page (might have broken some links??)
10jan06
1 Mhz comb of Ac units in dome also seen in 430 Mhz rcvr.
09jan06
26dec05 lbw no power polB for 1 file (probably downstairs iflo problem).
09jan06
added links to vanvleck correction papers: fred schwab, kulkarni/heiles.
05jan06
Alfa Tsys for the month of dec05
05jan06
fractional occurrence of rfi for dec05.
05jan06
alfalfa (a2010) monitoring of data for month of dec05
05jan06
updated system performance page for dec05
2005
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14dec05
Instructions for crossing midnight at the end of the year.
13dec05
Started adding list of combs to the rfi freq list page.
12dec05
9 level correction problem with wapp pulsar folding.
07dec05
fractional occurrence of rfi for nov05.
07dec05
alfalfa (a2010) monitoring of data for month of nov05
07dec05
Alfa Tsys for the month of nov05
06nov05
updated system performance page for nov05
05dec05
430 Mhz birdies with 1 minute periodicity.
01dec05
bits used in the hp3488 digital output device for the downstairs IF2.
26nov05
trouble with lbw polB filter 3 (1230-1470 Mhz).
22oct05
gain curves of all recievers. updated the cband gain curve, added 327.
22oct05
cband gain curves fit to data may05-oct05.
22oct05
cband system performance used for gain curve fits
21nov05
performance of mathews 430 test feed with cals installed.
05nov05
The azimuth dependence of birdies in the 327 Mhz reciever.
04nov05
alfalfa (a2010) monitoring of data for month of oct05
02nov05
updated system performance page for oct05
02nov05
Alfa Tsys for month of oct05.
02nov05
fractional occurrence of rfi for oct05.
29oct05
lbw calibration jumps for murray's oh data.
28oct05
standing waves measured by moving the platform with the tiedowns.
21oct05
The output of the 327 Mhz rcvr after the 1st amp (and before the filter).
17oct05
location of faa 1350 radar aliases in alfa.
16oct05
1 Mhz comb in 327 coming from digital control units in dome AC units.
14oct05
Cal stability for mathews 430 feed checked.
13oct05
added idl routine atmclp to process coded long pulse data from ri rawdat.
10oct05
some linux kernels see no speed up when running 2 processes on a dual processor cpu.
07oct05
Tsys jump of sbw aug05 is from the cal value changing.
06oct05
fractional occurrence of rfi for sep05.
06oct05
Measure the 1300/1400 Mhz birdies in lbw. Most comes from the wapps.
05oct05
Alfa Tsys for month of sep05.
05oct05
a2010 (alfalfa) monitor data for month of sep05.
29sep05
added 430 carriage house cal values.
27sep05
atm digital receiver glitches every 100 ipps.
26sep05
added idl shsxxx routines to read atm echotek digital receiver data.
20sep05
cell phone harmonics in lbw while transmitting from inside the dome.
20sep05
added cell phone info page.
16sep05
td8 analog input problems.
15sep05
alfa: the cal deflection is not a function of the feed rotation angle.
14sep05
TsysA-TsysB "polarized Tsys" with the alfa rcvr. Az spins and feed rotation.
13sep05
tilt sensor measurement while rotating turret floor (after rolling surface section replaced).
07sep05
tension in tiedowns after the loadcells were recalibrated.
05sep05
fractional occurrence of rfi for aug05.
05sep05
The 16Khz comb at 327. Grounding the motor shields helps for awhile.
03sep05
Alfa Tsys for month of aug05.
03sep05
Updated system performance or aug05.
27aug05
the 16Khz comb at 327 Mhz is coming from the alfa motor controller.
25aug05
Testing the cal and measuring Tsys for mathews 430 dipole on ch.
17aug05
Fitting Tsys for alfa using data jan05 thru jul05.
14aug05
sband bistatic run pointing problems (17apr05 run)
11aug05
installed new cband cal values (measured 10jun05).
11aug05
updated system performance for jul05.
11aug05
added fractional occurrence of rfi for july05
10aug05
Plot Tsys vs za by month for alfa. Added months mar,apr,may,jun,jul05.
08aug05
check performance of cband hi for thankins.
08aug05
17apr05: tension in tiedowns during sband run.
06aug05
p2030 alfa pulsar search sees large 12 second compression in the 01aug05 data (from faa radar).
xxaug05:
Site RF tx radiation safety report from RF consultant (.pdf)
19jul05
galfa pixels 4a,6a switched 11jul05 thru 19jul05
13jul05
power levels drift/jump in pixel2b of galfa spectrometer.
11jul05
alfa: replacing pixel 4a fiber receiver makes 174Khz ripple go away.
07jul05
fiber tests show that 174Khz ripple comes from the fiber receiver.
06jul05
fractional occurrence of rfi for jun05
01jul05
sbn receiver warms up during sband radar run.
25jun05
td 12 releases after lightning strike.
23jun05
lbw resonance polA at 1400 Mhz
21jun05
lbw cals measured 01jun05 after polB cal cable fixed.
12jun05
1428Mhz birdie in alfa 18may05 to 23may05.
10jun05
alfa beammaps from spider scans (on 3c138 taken jan05)
09jun05
time for sband dewar to cool down.
07jun05
16 khz comb in the 327Mhz receiver.
05jun05
wapp fits file usage.. updated to look at all 3 discs..
05jun05
updated a2010 (alfalfa) monitor data for month of may05.
03jun05
time for lbw dewar to cool down.
02jun05
fractional occurrence of rfi for may05
31may05
weekly report of problems started.. 25may05
31may05
galfa pixel4a,6a were switched (before 02may05 until 31may05)
30may05
distomat 4 loses power 6pm. ac filter at input to canister burns up...
28may05
lbw stokes calibration. included date on 4 more sources jul04-apr05.
26may05
alfa pixel4a still has 173Khz ripple with amp of .09K.
20may05
monitor disc usage by project in the wapp spectral line disc directory.
19may05
discrete gain jumps and a1.2 hz crosshead oscillation in the lbw gain.
09may05
comparing lbw, alfa performance at OH with the 10db amps in.
07may05
added p2030 user project page.
07may05
p2030 pulsar data feb05 thru apr05 shows aerostat compression with new amps.
05may05
modeling the periods created by the aerostat radar.
05may05
put aerostat radar info in one page
02may05
fractional occurrence of rfi for apr05.
02may05
updated system performance for apr05.
19apr05
drifting of the wapp clocks (ntp off)
19apr05
ntpd time jumps on the wapps when pulsar search p2030 run.
12apr05
a2010 1 second total power vs position in strip for apr05.
11apr05
p2030 pulsar data shows compression with new rf amps and wapps not starting together.
08apr05
a2010 drift scan data (apr05) with new amp in pix2 show radar compression.
06apr05
a2010 monitoring. add data for apr05.
06apr05
10db gain amp placed in front of alfa pixel2a,b mixer.
05apr05
fractional occurrence of rfi for mar05
04apr05
Gain stability of the alfa system using a2010 drift scan data.
04apr05
updated system performance for mar05
02apr05
Comparing the system performace of alfa and lbw at oh frequencies.
30mar05
faa 1350 radar harmonics appear in alfa surveys.
29mar05
data taken 18nov04 show 1400Mhz birdies in distomats 3,4.
24mar05
1430 Mhz birdie in alfa pixel0b.
17mar05
430 linefeed gain curve.
17mar05
430 linefeed calibration page added.
17mar05
pointing model 16 for the carriage house made and installed.
14mar05
include 430 ch in system performance plots.
13mar05
updated platform temperature measurements from 2000 through feb05.
10mar05
TsysA/TsysB ratio for alfa.. added plots vs ra,dec,l, and b.
08mar05
TsysA/TsysB ratio for alfa spectral wapp data. 01nov04 thru 28feb05.
08mar05
description of computing tsys from the tsys archive.
05mar05
fractional occurrence of rfi for feb05 updated.
04mar05
updated system performance for feb05
04mar05
alfa pwr jumps (a2010,a1963), slow recovery from faa radar. Problem not in downstairs iflo.
01mar05
327 receiver gain curves for data taken mar03 to feb05.
01mar05
327 system performance for data used to fit the gain curves.
27feb05
26feb05: punta salinas radar does not stay in mode A
18feb040
lband multibeam system. Show rotation rate vs parallactic angle and maximum integration times.
6feb05
how much does the az/za move if we drift in J2000 coordinates.
16feb05
hpbw vs lamda for all receivers. data taken 2004.
15feb05
fractional occurrence of rfi oct,nov,dec04,jan05. Cleaned up alfa plots. Thanks to mmd.
13feb05
hi frequency system performance after reflectors adjusted.
04feb05
dome cam limit switch replaced with switch/strikers. New limits measured.
03feb05
td12 moves erratically and then goes into foldback.
02feb05
updated system performance thru 31jan05
02feb05
fractional occurrence of rfi for jan05
31jan05
Single pol/board wapp spectral line observing only provides 1 pol.
24jan05
For tsys monitoring, included plots for TsysPolA - TsysPolB
23jan05
recomputed sysperformance for alfa using the new cal values.
23jan05
plots of alfa Tcal vs frequency. Data taken 30sep04.
21jan05
look at cb,cbh,xb gain before and after reflector adjustments.
18jan05
distomat failures, include plots az vs za,and az vs hour of day.
18jan05
The 60Mhz harmonic birdie put to rest...
11jan05
430 mapping project a1731. Variation of Tsys.
11jan05
430 Mhz TsysPolA-TsyspolB drifting for 2003, 2004.
06jan05
updated 29nov04 alfa rotation angle to fix pointing error in computation. new angle 1.55 deg.
05jan05
updated system performance for dec04. (now includes alfa).
2004
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)
14dec04
drifting 60 Mhz birdie seen at 60 Mhz in the dome with a spectrum analyzer
12dec04
fractional occurrence of rfi for nov04.
10dec04
updated system performance plots for nov04.
12dev04
Calibration scans with alfa, rotation angle offset, and beammaps (a first pass).
01dec04
Look at how the fits header locations are computed.
23nov04
9186Mhz birdie at xband coming from oscillation in sbw dewar.
22nov04
proj a1552.. cordrift. Negative ghost of galaxy in strip caused by bandpass correction.
20nov04
19nov04 data shows 60Mhz birdie is coming from the dewar monitoring system.
20nov04
18nov04 data: 60Mhz harmonics jump ever 2.67 seconds (1 ms data with wapps).
19nov04
12nov04 data: 60 Mhz birdies are coming thru
18nov04
1367/1382 radar birdies were punta salinas with chn 18 left on.
16nov04
tiedown 4 trouble with power supply and then motor overspeed.
12nov04
azimuth dependence of faa radar using alfa and 64 usec dumps.
08nov04
fractional occurrence of rfi for oct04.
07nov04
28oct04 data shows lband drifting birdies seen at lband and 430 Mhz.
07nov04
system performance plots for oct04.
06nov04
FCC rules for broad band over power lines access (oct04)
06nov04
FCC reallocation of the 1390,1430,1670,2385 Mhz bands (dec01)
03nov04
galfa spectrometer time stamp stability.
01nov04
spider scan (cima) positions updated so all strips pass thru center of source.
31oct04
alfa precursor a1956. driftchase pattern position errors from 21oct04.
20oct04
alfa precursor a1956. Test data taken 28sep04. Positions start of scan off.
17oct04
sbn 1.2 hz oscillation in polB. same frequency as the dewar refrig.
09oct04
430 Mhz filter in front of dewar removes the tv intermods.
09oct04
fractional occurrence of rfi for sept04
09oct04
updated system performance for sep04
07oct04
updated alfa jumping from radar. Pulsar data shows it is the faa radar.
07oct04
punta salinas, faa, and aerostat radars total power vs time using alfa.
29sep04
cband polA oscillations and Tsys jumping around.
27sep04
radar is causing the total power in some alfa beams to increase.
24sep04
checking the ra,dec J2000 coordinates in the header after the 16sep04 changes.
22sep04
mathew's 430 test feed performance after lowering it 3 feet.
21sep04
Phase delay needed in the line feed for focusing of the ao dish.
17sep04
wind speed and platform oscillation frequencies for tropical storm jeanne.
14sep04
a1946 alfa drift scans. Jumps in the total power 06sep04.
13sep04
cross scans on 3c286 using Jmathews test feed on the carriage house.
12sep04
cal values for lband wide measured 06aug04, installed 12sep04.
11sep04
added sbw to plot off gain vs freq,za for all receivers.
10sep04
installed sbw gain curve for data taken 15may04 - 01sep04.
10sep04
created sbw calibration page
10sep04
a description of the gain curves used at ao.
08sep04
1380 Mhz Birdie in pixel 0b of alfa data.
08sep04
174 khz ripple in alfa pixel4a data as seen by wapps and galfa.
07sep04
carl heiles' notes on the galfa spectrometer.
02sep04
proj a1946,alfa month of aug. Check that brds have consistent hdr info and that time steps are 1 sec between records.
01sep04
updated sysperformance for aug04
01sep04
Tsys alfa using cal on/offs from aug04.
27aug04
the stability of the async cal mode of cima.
25aug04
updated the alfa pixel numbering drawing to be correct.
22aug04
a1946 drift scan thru a source. data timestamp ok, rotation angle ok (this page updated 27aug04).
22aug04
a1946 cross scans after beam order changed.
20aug04
a1946 alfa precursor proposal. data taken 19aug04 (cross scans).
16aug04
calibration scans with alfa at 1665 Mhz.
13aug04
dome vibrations while moving at slew rate at low za.
10aug04
measuring the alfa calvalues at 1665 Mhz using sky and absorber.
09aug04
fractional occurrence of rfi for jul04.
08aug04
updated system performance for jul04.
02aug04
ripples in lbw near 1390 and 1400 Mhz (a1861:may04,a1914:aug04).
01aug04
faa radar compression of the alfa system.
20jul04
updated sbw system performance to new cal diode values.
18jul04
measured sbw cal values using sky and absorber.
13jul04
fractional occurrence of rfi for jun04
08jul04
Using mean,median, and robust averge to remove Tsys in cormapping routines.
04jul04
updated system performance thru jun04.
03jul04
updated gain curves all receivers with new sbh fit
03jul04
sbh gain curves from feb04 thru jun04 data.
03jul04
sbh system performance used to compute gain curves feb04-jun04
02jul04
1400 Mhz birdie coming from 100Mhz distribution/wapps in control room building.
01jul04
azimuth swing looking at 1400 Mhz birdies with high spectral resolution.
30jun04
added high freq resolution dynamic spectra of 1374 Mhz birdie.
29jun04
distomat birdies (30may04) still present after communications changed from copper to fiber.
28jun04
lbw polB cal jumps on 23apr04
22jun04
drifting birdies in lb system with 60 Mhz spacing.
21jun04
summary of 430 Mhz birdies may/jun04 compiled by chris salter.
17jun04
xband performance above 10Ghz.
17jun04
extend xband cal value vs freq plot to 12.3 ghz.
10jun04
added fractional occurrence of rfi for may04
05jun04
pointing error as we lose tension in the tiedowns.
04jun04
added system performance for may04
29may04
added fractional occurrence rfi for apr04
28may04
1374.495 Mhz birdie (a1861).
28may04
1400 Mhz birdie (a1861).
27may04
started list of monitor data that is backed up.
23may04
Compare az,za model offsets with horn survey.
23may04
the az,za model offsets for the "other" receivers relative to sbn from model15.
18may04
aas plots for jagadheep
15may04
pointing model 15
13may04
updated tiedown 4 limit switch positions after jack replaced.
09may04
results of the 08may04 horn survey.
08may04
added blurb on turret encoder.
04may04
Alfa Tsys measured using the old iflo system.
04may04
alfa cal values measured in the lab.
03may04
horn survey(02may04) after moving the horns.
01may04
surveying the tertiary (01may04)
29apr04
horn survey results 28apr04.
27apr04
resonance in alfa receiver at 1537.7 Mhz.
26apr04
Alfa Tsys/Tcal using the old iflo system.
12apr04
computing alfa wedge position on the floor.
09apr04
quick look lbw performance after kevlar cable tensioning.
07apr04
rcvr system performance thru 01apr04
07apr04
fractional occurrence of rfi for feb04
27mar04
xband gain curves mar03 thru sep03
18mar04
xband tsys vs frequency.
18mar04
installed new cal values for xband receiver.
14mar04
new cal values for sband high..
14mar04
added description on controlling the gregorian cals...
14mar04
moved cal values from home page to a page of its own.
10mar04
sbh gain curve fit using data taken 15may03 thru 30sep03
10mar04
system performance sbh for gain curve dataset.
09mar04
sbn gain curve fit using data taken 01mar03 thru 29feb04
09mar04
system performance sbn for gain curve dataset.
08mar04
cband gain curves using data from may03 thru feb04.
08mar04
system performance cband may03 thru feb04. data used for gain fit.
08mar04
rcvr system performance thru 29feb04 (cband hi now included).
08mar04
fractional occurrence of rfi for feb04
04mar04
looking at the alfa rf/if processor using a noise source.
29feb04
fit gain curve to cbh feb04 calibration data.
27feb04
notes to myself.. computing Trcvr.
25feb04
distomat failure vs az,za
25feb04
platform corner height vs za, torque. Will ALFA be a problem??
23feb04
looking at 6.7 ghz masers with the cband high receiver.
23feb04
added cbh to tsys monitoring output.
18feb04
updated sysperformance page thru 01feb04.
18feb04
corrected parallactic angle picture.
17feb04
tsys vs frequency for cband hi.
17feb04
a first look at the rfi in the cband hi receiver band.
16feb04
(on-off)/off on 3C454.3 covering the entire cbhi band.
16feb04
a first look at cband high calibration.
15feb04
update the horn survey page to include the 11feb04 and 14feb04 horn theodolite surveys.
12feb04
atod , signal conditioning board description for turret.
01feb04
fractional occurrence of rfi for jan04
25jan04
computed gain curve for xband oct05 to 25jan03.
25jan04
moving the 327 receiver on the turret floor.
25jan04
moving the xband receiver on the turret floor.
24jan04
moving the 610 Mhz rcvr to a new turret position.
06jan04
1422.5 Mhz birdie from channel 54 transmitter.
05jan04
defining the sign of the pointing error for turret and calib scans.
02jan04
updated system performance thru 31dec03
02jan04
fractional occurrence of rfi for dec03
2003
(
top
)
15dec03
updated system performance thru 15dec03.
15dec03
fractional occurrence of rfi for nov03.
12dec03
sband transmitter page. Include TTI module i/o usage.
04dec03
372Khz comb in 327 rcvr from sbTx console in dome.
02dec03
372Khz comb in 327 rcvr coming from inside the SbandTx room.
25nov03
372Khz comb in 327 rcvr.
12nov03
fractional occurrence of rfi for oct03.
12nov03
weight distribution on the turret rotary floor.
09nov03
updated system performance for oct03.
02nov03
updated gain curve page to include new lbw curve.
02nov03
lbw gain curves computed using data from mar03 thru sep03.
30oct03
1417.5 birdie from color camera 5 in the dome.
30oct03
added az,gr,ch limits to little know facts
21oct03
Reflector survey 2 (oct01) added normal errors along north/south direction.
19oct03
Reflector survey 2 (oct01) results.
15oct03
azimuth encoder jump 14oct03.
14oct03
1289.7 Mhz radar (punta salinas??)
12oct03
time stability of the iridium signal.
10oct03
sband wide cal values from 15aug03 data.
05oct03
updated system performance for month of sept03
05oct03
add fractional occurrence of rfi for sept.
25sep03
theodolite survey results from jul03.
24sep03
first holography outputs from aips (via slava).
17sep03
xband: resonances in receiver.
14sep03
xband: compare sefd new and old horn
14sep03
Compare xband TsysB/TsysB using cals and source.
14sep03
Tsys vs frquency for xband before, after new horn.
10sep03
added fractional occurrence of rfi for august
10sep03
increasing the isolation for iflo monitor port 1a.
10sep03
added tsys ascii output description on tsys mon page.
08sep03
updated system performance for month of august.
02sep03
added routine arch_getmap() to input a cormap from the data archive.
01sep03
holography,plots of phase vs time,za , correction at the peaks.
23aug03
a1659 sband hi CH ons only. Example of processing this type of data.
12aug03
bs116b vlba holography run. telescope offsets for each pattern.
07aug03
system performance. reran data 01mar03 to aug03 with new flux fits.
05aug03
added fractional occurrence of rfi for july.
31jul03
430 dome birdies with 20 Mhz filter installed.
28jul03
added tiedown page and failure log.
21jul03
xb pointing offsets from calibration runs
21jul03
new xb cal values installed (sky/absorber measurements)
17jul03
ri glitches in digitizer Q1.
13jul03
compare kildal and german cortes horns on lbw.
02jul03
added fractional occurrence of rfi for jun03
02jul03
updated system performance page thru 30jun03
01jul03
alfa IF tested 15may03 using lbw receiver.
01jul03
az swings looking at polarized Tsys with sbh.
27jun03
start collecting rfi birdies in a list by freq.
27jun03
collect various rfi az spins together for comparison.
27jun03
az spin with 430 Mhz birdies. tv station intermods.
25jun03
recomputed lbn gain curves for sep01 thru 20aug02.
04jun03
fractional occurrence of rfi for may03.
03jun03
xband. polb variations for a1704 recomb lines.
01jun03
system performance updated thru 31may03. lbn,lbw,sbw,sbh,cb,xb.
29may03
added correlator drifts for data thru 27may03
19may03
lbw stokes (new lbw) src:B1040+123,B1228+307,B2121+248
18may03
cband cal values measured 16may03 installed.
18may03
cband cal values 22apr03 to 04may03 installed.
17may03
updated links for "using idl to process spectral line data"
15may03
resonances in the sbh receiver.
14may03
sband high cals recalibrated.
09may03
added corsavbysrc for idl automated on/off processing.
08apr03
.3 kelvin polarized tsys vs az,za using lbw.
07apr03
fractional occurrence of rfi for apr03
06may03
lbw 1290,1350 radars. 1ms detect. show rotation drift and compression.
04may03
system performance 430 dome.
04may03
system performance lbw. x102 runs 02may03
04may03
system performance 327 rcvr.
03may03
system performance 610 rcvr.
02may03
system performance. sbn mar03 to may03
02may03
system performance. xband apr02 to feb03.
02may03
system performance. lbw mar03 to may03
01may03
added system performance page. Started with lbn,lbw,sbn,cb,xb.
29apr03
IFLO compression by the FAA 1350/1330 radars using lbw,lbn.
28apr03
dewar temperatures. year to date is now being updated for new data.
27apr03
lbn system performance 01sep01 thru 20aug02 (with updated calvalues).
23apr03
poor isolation in the downstairs iflo buffer amplifier monitor ports.
22apr03
sefd vs for lbw using 3C138
17apr03
resonances in the new lbw receiver.
13apr03
az,zenith angle dependence of 1350,1290, and aerostat radars.
09mar03
fractional occurrence of rfi for mar03
07apr03
slow drift in gain of sbc1 polB in interim correlator.
06apr03
radar power in the downstairs iflo.
31mar03
creating harmonics in an amplifier.
26mar03
tv station power from hilltop monitoring. 1998 to current date.
20mar03
galfa talk on rfi.
15mar03
pitch,roll model from 28feb03 tilt sensor run (after dome move).
15mar03
tilt sensor results from 28feb03 run (after dome move) uncalibrated..
14mar03
jumps in interim correlator sbc 2 power levels.
08mar03
fractional occurrence of rfi feb03
07mar03
finished model14. included variogram, verifying model, other rcvr offsets.
07mar03
added model offsets each rcvr to turret page.
05mar03
pointing model14 results.
04mar03
turret room temps for feb03
02mar03
Compare focus curves before after dome move.
02mar03
focus curve 28feb03 after the dome move.
27feb03
lbw gain curves 21nov02 to 17feb03 after old lbw phase center was moved.
27feb03
lbw system performance after the old lbw phase center was changed.
27feb03
1371,1387.2 radar..
22feb03
compare focus curves taken after 01dec02.
21feb03
focus curves sbn: CTA21, 3C138 taken 18feb03 after shimming.
20feb03
make a pitch,roll model from the 19feb03 tilt sensor swings.
20feb03
added tilt sensor run from 19feb03
20feb03
theodolite results from feb03 survey
20feb03
tilt sensor results from feb03 survey
16feb03
ao9 survey of dome 12feb03 after first shimming cycle.
15feb03
tilt sensors compare pitch roll 05feb03 (before shimming), and 12feb03 after 1st shimming.
14feb03
Azswings, za strips tilt sensor data 04aug01 during aug01 a09 survey.
12feb03
Azswings, zastrips tilt sensor data 05feb03 before elevation rail shimming.
07feb03
fractional occurrence of rfi jan03
06feb03
compare pitch,roll, focus 09aug01 with 04feb03 (before shimming).
06feb03
turret room temps for jan03
02feb03
tilt sensor angle with the turret floor.
02feb03
tilt sensor measurements of the 1,3az terms (16dec02).
31jan03
yr2002 cable tensions vs platform hght,temp,tdPositions. data and fits.
11jan03
added 10jan03 focus curve to comparison of most recent focus curves.
11jan03
added cband focus curve taken 10jan03.
05jan03
fractional occurrence of rfi dec02
01jan03
turret room temps for dec02.
2002
(
top
)
30dec02
sbn narrow focus curve done 16dec02.
30dec02
sbn sefd ratio shows that tsysA,B difference is real.
23dec02
max sky az,za sky velocity vs za.
18dec02
added graphic monitor of 16K stage dewar temperatures.
15dec02
lb,sb,cb gain.. showing sources used to compute gain curves.
11dec02
Updated Alfa postAmp page showing gain needed in postamps.
06dec02
plot of gain curves with new cband data.
06dec02
cband gain curve after horn focus.data 28aug02 thru 30nov02.
06dec02
cband system performance 28aug02(after horn focus) thru 30nov02.
06dec02
fractional occurrence of rfi for nov02
05dec02
compare gain/sefd sep00 to aug02..lband,sband,cband.
04dec02
turret room temperatures for nov02.
04dec02
100 Mhz frequency reference unlocks (25nov02).
02dec02
lbw system performance change after horn moved.
24nov02
lbw horn focus change.
20nov02
added idl routines for ao pointing.
07nov02
Using the calOn - calOff to remove the bandpass shape.
05nov02
cross scans on seti@home feed taken 01jul02.
04oct02
primary reflector errors measure oct01 (east half from lynn bakers plots)
04nov02
turret room temperatures for oct02.
04nov02
fractional occurrence of rfi for oct02.
28oct02
add rfi hilltop monitor page. started record of high freq receiver.
23oct02
410 Mhz birdies from the navy transmitter in aguada.
20oct02
added monitoring of distomat failures by month.
13oct02
stokes reduction. reran lbw,lbn,sbw sources.
07oct02
added more programs to the telescope monitoring page.
05oct02
spectrum analyz plots of lbw dewar output taken 18sep02.
05oct02
updated lbn stokes data to 01oct02.
03oct02
some notes on the multibeam power levels for the post amp chassis.
03oct02
fractional occurrence of rfi for sep02
03oct02
turret room temperatures for sep02.
29sep02
gain curves for various receivers.
29sep02
Rms noise versus integration time using the interim correlator and a noise src.
28sep02
spike in central channel of correlator bandpasses.
25sep02
correlator bandpasses using a noise source.
25sep02
Added to: comparing measured and computed bandpass shapes...
16sep02
azimuth encoder jumps.
10sep02
lbn gain curves after horn focus change (data 21aug02 thru 09sep02)
10sep02
lbn system performance 21aug02 thru 09sep02 (after horn focus change).
06sep02
Comparing the measured and computed bandpass shapes of the digital filters.
03sep02
turret room temperatures for aug02.
03sep02
fractional occurrence of rfi for aug02.
30aug02
corbl: idl routine to interactivly baseline a correlator dataset.
29aug02
cband gain curves from data taken sep01 to aug02
28aug02
gain before/after moving the cb horn so phase center is at focus.
27aug02
Telescope monitor displays running from multicast memory.
24aug02
Tsys vs turret position before, after lbn focus change.
23aug02
added corcalib idl routine. Calibrate on only scan with calonoff.
22aug02
moving the lbn horn to the correct phase center.
20aug02
added ao idl correlator routines to the downloadable software page.
19aug02
added selectrcv program documentation. Creates a subset of a datafile by rcvr.
19aug02
added srcTimes program documentation. compute lst rise,set times.
18aug02
added bToJ B1950->J2000 program documentation.
17aug02
added handy filter programs documentation. so far just cordmp.
16aug02
system performance for cband sep01 through aug01.
11aug02
327 calibration runs
09aug02
327 receiver breakdown of tsys contributions.
05aug02
fractional occurrence of rfi for jul02.
05aug02
added turret room temperatures for jul02
04aug02
updated tertiary connection point locations from 020204 survey.
01aug02
dome pitch,roll while td's track the average platform height.
01aug02
resonances in the cband receiver.
31jul02
resonances in the sbh receiver.
24jul02
2 MHz comb in 327 Mhz receiver 327 2mhz comb from 430 waveguide power monitor.
Gasket material on huffman boxes degrade with time.
30jul02
added page to download software. First routine is cordmp.
27jul02
2 hz gain variation in xband from the rcvr crosshead.
25jul02
2 mhz comb in 327 receiver.
24jul02
xband drift scans.
10jul02
added idl routines to look at agc (az,gr,ch) data.
08jul02
pointing errors with and without the dome hydraulic brake.
07jul02
fractional occurrence of rfi for jun02.
04jul02
turret room temperatures for jun02
28jun02
gregorian dome hydraulic brake performance
25jun02
torques needed to move the dome 2<->20 degrees za.
22jun02
dome amplifier glitching when changing directions.
14jun02
TsysA-TsysB variation with azimut using Cband receiver at low za.
13jun02
horn spacing for multi-beam system.
11jun02
Measure loss from 19cm and 25 cm horn offset using lbn (for multi beam tests).
08jun02
platform and bowl temperatures 2000-2002.
06jun02
faa radar harmonics when 1350Mhz radar not within digital filter bands.
04jun02
turret room temperatures for may02.
04jun02
fractional occurrence of rfi for may02.
03jun02
compared lbn cal values 28jan02 computed by phil and karen and compare sefd lbw,lbn.
29may02
brake valve on dome clogs while testing.. data 21may02
27may02
color camera biridies at lband (taken 24may02) with camera #1 not installed.
15may02
lbn sefd over entire receiver band.
15may02
moved lbw calibration list to separate page.
13may02
corrected focus curves for kildal phase center error.
11may02
lbw cal value. Rms polB worse than polA (probably the ripple in polB)
10may02
lbw polB ripple. switched dewar output cables. ripple in dewar.
10may02
fractional occurrence of rfi for apr02
09may02
turret room temperatures for month apr02 added.
01may02
Ripple in lband wide pol B still present.
28apr02
distomat birdie at 1399.82 reappears.
26apr02
added lbn to "best" turret position by tracking sources.
25apr02
updated stokes data for cband sep01->15apr02
24apr02
update stokes data for sbw sep01->>15apr02
23apr02
updated stokes data for sbn jun01->15apr02
23apr02
updated stokes data for lbw jan01->15apr02
22apr02
Look for "best" turret position by tracking sources.
20apr02
updated stokes data for lbn thru apr02
19apr02
added corstokes idl routine to intensity calibrate stokes data.
15apr02
added mmgetarchive idl routine to extract calibration data.
15apr02
added sband high calibration runs for 08apr02,11apr02.
14apr02
tsys versus turret position. tsys bumps.. updated for sbh.
09apr02
rfi from color cameras in the dome reappears.
07apr02
resonances in the lband wide omt.
06apr02
added system temperature plots: daily, yeartoday, by year.
05apr02
added fractional occurrence of rfi for mar02
04apr02
added turret room temperatures for march. New Ac now on..
03apr02
added horn survey results.
03apr02
include sband high focus curve in comparison of focus curves.
03apr02
added sband high focus curve.
26mar02
added dewar temperature monitoring.
26mar02
added monitoring info section it's easier to find some of this data.
24mar02
comparison of gain before and after reflector adjusted.
23mar02
sband high (3-4 ghz) Tsys and calvalues versus frequency.
21mar02
added idl routines to display the dewar temperatures.
19mar02
focusing with the tertiary.
17mar02
sbh cal values measured at the rcvr test shack.
11mar02
added lbw focus curve.
11mar02
added lbn focus curve.
11mar02
comparing focus curves. added lbn,lbw, sbn from mar02.
11mar02
redid sband narrow focus curve to check that tertiary hadn't moved (it didn't)
09mar02
fractional occurrence of rfi for feb02. xband now included.
08mar02
added feb02 turret room temperatures.
08mar02
sbw focus curve.
08mar02
comparing focus curves. Added sbw, separate plot of most recent curves.
07mar02
hc3n,hc7n in tmc1 using xband receiver.
05mar02
comparing focus curves
04mar02
lbn cals. added values measured 28jan02 (but not installed as cal values)
04mar02
lbn cals. added values measured 06dec01 (but not installed as cal values).
03mar02
added az swing to the 1400 Mhz birdie.
02mar02
Computed "other" cband cals using ratio to hi correlated cal.
28feb02
1400 Mhz birdie (not the distomats).
28feb02
HC3N lines at 9097,9098, and 9100 Mhz possible detection at xband.
24feb02
22feb02 Tsys vs turret position lbn,lbw,sbn,sbw,cb,xb. Shows Tsys bump.
22feb02
21feb02: xband calibration run 3C138,3C286, and B1040+123.
21feb02
xband:10 beammaps (turret scan) J0237+288 after pointing offsets added.
20feb02
history of turret positions and pointing az,za offsets by model.
20feb02
how many points does it take to move pointing model to a (non sbn) receiver.
19feb02
cband pitch,roll correlation with coma.
18feb02
xband calib run on J2253+161,3C48 on 02jan02
18feb02
added cor idl plotting routines mmplotgtsb,mmplotcsme.
17feb02
xband pnterr, tsys,sefd,beammaps on J2253+161,J0137+331 (3C48) using turret scans.
15feb02
show the fraction of time the remy radar spent at 1270,1290 Mhz for 2001.
12feb02
measured the radar parameters for the 1270 radar at remy.
10feb02
added fractional occurrence of rfi for 327,430.610,lband,sband,cband through jan02.
09feb02
added to the 1az term discussion for the horizontal offsets of dome.
07feb02
xband focus curve after shimming receiver.
06feb02
added history of turret positions for receivers.
05feb02
compute shims needed for pitch,roll, and focus correction.
04feb02
added turret room temps for dec01,jan02
04feb02
simulate tiedown motion after shimming the rails.
31jan02
cband focus curve taken 23jan02
30jan02
sband narrow focus curve taken 20jan02
30jan02
little known facts.
30jan02
tiedown motion needed to remove pitch,roll,focus error.
27jan02
pitch,roll of telescope using theodolite and tilt sensors (with 2d fit)
23jan02
added fractional occurrence of rfi for dec01.
17jan02
Use survey azimuth, encoder az differences to compute platform offset from AO9
12jan02
first shot at adding an azimuth encoder table to model 13.
09jan02
pointing model 13 (jan02).
04jan02
prelimary plots of ao9 survey 09aug01.
03jan02
multifreqency measurements of 3C38,3C138 sep01->dec01
02jan02
xband beammaps on J2253+161 using turret scans.
02jan02
xband pointing error and beamwidths from turret scans.
01jan02
xband focus curve after receiver installed (24dec01).
2001
(
top
)
26dec01
large ripple in 430 Mhz gregorian dome receiver.
23dec01
cband sefd vs za preview from 22dec01 calibration run.
23dec01
xband installation. added rfi plots. First out of focus light: gain,sefd,beammaps.
21dec01
xband installation. added power levels in if1 and rfi seen at xband.
20dec01
xband installation. turret strips for turret position, calvalues, tsys versus frequency.
13dec01
Updated measuring cal with sky/absorber to include reflection coefficient.
10dec01
added software modification history page.
07dec01
added fractional occurrence of rfi for month of nov01
03dec01
sband narrow calibration sep-nov01
03dec01
lband wide calibration sep-nov01
21nov01
stokes: added parameter definitions, srclist, updated cband to 19nov01.
19nov01
lbw gain/tsys calibration from Sep01.
11nov01
added idl documentation for generic routines.
08nov01
1381 gps L3 birdie seems to be on all the time.
03nov01
Added turret room temp for month of october.
31oct01
Timer module in air conditioner compressor causing rfi.
12oct01
sband wide cal values measured 20sep01.
10oct01
Description of measuring cals on the telescope using absorber and sky.
10oct01
1350 Mhz rfi tone when blanker in use.
09oct01
added images to illustrate radar harmonics at 260 IF.
08oct01
resonances in the sband wide receiver (20sep01 data)
06oct01
New airconditioner, cycle louvres, blower, compressor (5oct01 data).
05oct01
lbn image with magnetic relay installed on new ac compressor.
04oct01
Radar harmonics created in the 2nd IF
02oct01
idl routines to look at fractional rfi occurrence interactively.
02oct01
monthly update. fractional rfi occurrence for sept.
02oct01
monthly update. turret room temperature for September.
24sep01
lbn stokes. Redid with no mueller matrix correction (previous had used it).
22sep01
lbn image showing jumps when aircondioner cycled on/off (from 20sep01).
22sep01
rfi color camera on service platform. before/after shielding.
21sep01
pointing strips on sbw. updated za model offsets.
21sep01
spectrum of the sband dewar output.
19sep01
fractional rfi occurrence by freq. added aug01 and new yeartodat. (lband).
17sep01
fractional rfi occurrence by frequency plots added. (lband).
15sep01
lbn total power jumps coming from new airconditioner compressor running.
14sep01
added turret room temp by hour and month (for 2001)
13sep01
updated info on a1459 baseline ripples.
10sep01
1% baseline ripple in polB lbwide that's been there for months.
09sep01
a1459 baseline ripple. lbn 1350-1420. 3min on/offs
29aug01
azimuth servo failures. motor torques build up while stopped (24aug01).
15aug01
rfi from color camera on the service platform (13aug01).
15aug01
rfi from tertiary motors and electronics (02/08aug01).
14aug01
cband gain/sefd after panels in northern half of dish adjusted (02aug01).
13aug01
pointing and gain changes from tertiary motor install (sbn).
02aug01
rfi from tertiary cpu control box (mounted in the dome).
02aug01
tertiary motors installed on tertiary. encoder tracking error for a sine wave.
28jul01
Added cabling page under hardware. Shows fiber connections.
14jul01
software documentation to input and plot platform height/temp from distomats.
10jul01
tertiary simulator output.
03jul01
Problems with using the lbw hybrid to make circular polarization.
01jul01
cband gain/sefd with pitch,roll,focus correction after SE quad adjusted.
01jul01
3C48 gain at cband after SE quad of dish adjusted. Compare with 02feb01.
01jul01
Fractional gain versus surface rms by freq. ruze curves.
30jun01
full stokes reduction of 3C48 after se quad of dish adjusted.
30jun01
Added system modification history page.
21jun01
carriage house hydraulic brake. Measure free fall velocity (no motor).
19jun01
added jan-jun01 lbn,cband,sbn stokes calibration data.
15jun01
stokes polarization calibration.
14jun01
lband narrow filter bank calibration.
12jun01
temperature dependence lbw cals. calon/off tracking blank sky.
08jun01
Slow rise time for cband cal to go from 95 to 100% of maximum.
08jun01
Carriage moving uphill/downhill with hydraulic brake on 1 motor.
02jun01
Interim correlator. Adjusting power levels with large out of band signal.
28may01
pointing error and gain before and after tertiary platform installed.
21may01
azimuth encoder rack gear error (measured 21jan00).
12may01
azimuth blown by wind while brakes on (06may01).
11may01
finished additions to rfi 1407 birdie
11may01
added tv station information page.
02may01
lband wide power levels at output of the dewar. also update the 1407 birdie info.
28apr01
1407 rfi birdie from tv station.
24apr01
idl routines to look at rfi from hilltop mo>
16apr01
compare turret scans with heiles calibration on CTA21
11apr01
the multi meter in the new rfi box.
06apr01
platform motion as we pull down equally on all 3 tiedowns.
27mar01
Added pointing page. started with model 12 preliminary results.
23feb01
pitch,roll, focus correction at multiple frequencies on 3C48, CTA21(feb01)
21feb01
cband calibration after surface adjusted jan01.
21feb01 moved sband calibration after surface adjustment from 11. misc. to sband calibration.
16feb01 updated focus gain loss. Routine was using wrong fwhm. switched to 2 sigma.
Mainly changed what gain would look like after we did the prf correction.
14feb01
add cband focus curve after jan01 reflector adjustment
14feb01
add sband focus curve after jan01 reflector adjustment
14feb01
added focus curve page
08feb01
plot measured surface errors primary versus azimuth,za.
31jan01
calibrate slide rule potentiometer versus encoder for tertiary.
28jan01
cband cals measured using absorber and sky
27jan01
430 dome looking for rfi from vittara jeep parked next to the control room.
27jan01
lband rfi at 1300 mhz from the distomats.
20jan01
added rfi removal techniques with frank briggs paper..
17jan01
x111 image display of rfi data.
17jan01
tertiary ramp dac -10 to 10 counts. plot dac val, velocity and force.
17jan01
Added tertiary entries. tracking error, force calibration, friction.
09jan01
Telescope gain after the eastern half of the reflector has been adjusted.
2000
(
top
)
29dec00
Added lbn cal value measurements.
28dec00
tsys during az swings with dome at 19 deg za. Shows 120 deg tsys bumps and sun getting into the beam.
27dec00
rfi measurement. lbn 1420Mhz, azswing dome at 19 degrees, 3mhz bw.
26dec00
Added rfi measurements page.
01dec00
System temperature versus turret angle offset.
27oct00
rotary floor room temperature versus hour of day.
10oct00
source tracks across the dish by declination and hour angle.
10oct00
added lband multi beam link to home page and paralactic rotation rate vs dec.
05oct00
327 calibration. turret strips showing turret position, and polA,polB offsets
02oct00
lband fit gain(az,za). Changed to color. included fit to only za dependence.
23sep00
sband narrow calibration. Sefd, gain, tsys, and fit to (az,za).
- added coef's to cband calibration.
- converted cta21 multifreq measurements to color
- converted lband (az,za) plots to color.
21sep00
cband calibration. Sefd, gain, tsys and fits to (az,za).
20sep00
lband fit gain(az,za). Changed to average gain.Updated plots,text
04sep00
CTA21 multifreq measurements gain. compute surface error via ruze formula.
28aug00
gain stability vs temp (after sband xmit experiment).
25aug00
610 receiver calibration
23aug00
lband fit gain(az,za) and comparison with pitch,roll,focus errrors
17aug00
rfi: radar ipps memo from 1997/1999
17aug00 started logging modification dates
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