Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/people/vlbi/vsop/schedules/feb99/v040bsch.at Дата изменения: Thu Jan 14 23:48:00 1999 Дата индексирования: Mon Jun 28 00:49:06 2010 Кодировка: Поисковые слова: solar eclipse

COVER INFORMATION

Station: ATCA (Code At )
Experiment: VSOP observation of 0235+164 at 5 GHz
Exp. Code: v040b


Schedule Version: 1.00
Processed by SCHED version: Release of 1 Dec. 1998

PI: S. Frey

Address: FOMI Satellite Geodetic Obs.
P.O.Box 546
H-1373 Budapest Hungary


Phone: +36 27 310980
EMAIL: frey@novell.sgo.fomi.hu
Fax: +36 27 310982
Phone during observation:

Observing mode: VSOP, 5 GHz continuum, 128-2-2

Notes: Fringe finder : 0420-014




Schedule for ATCA (Code At ) Page 2
VSOP observation of 0235+164 at 5 GHz
UP: D => Below limits; H => Below horizon mask. blank => Up.
Early: Seconds between end of slew and start. Dwell: On source seconds.
Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
-------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes
Stop UT LST EL AZ HA UP ParA Dwell (see above)
-------------------------------------------------------------------------------

--- Mon 1 Feb 1999 Day 32 ---

Next scan frequencies: 4800.00 4816.00
Next BBC frequencies: 100.00 116.00
Next scan bandwidths: 16.00 16.00

04 00 00 0235+164 22 41 59 16.3 59.0 -3.9 -129.5 0 1 1 52
04 15 00 --- 22 57 01 19.0 56.5 -3.7 -131.3 900 F 1 367

04 15 00 0235+164 22 57 01 19.0 56.5 -3.7 -131.3 -2 1 1 367
05 15 00 --- 23 57 11 29.1 45.2 -2.7 -140.2 3598 F 1 1627

05 15 00 0235+164 23 57 11 29.1 45.2 -2.7 -140.2 -2 1 1 1627
06 00 00 --- 00 42 19 35.4 34.8 -1.9 -149.0 2698 F 1 2572

06 00 00 0235+164 00 42 19 35.4 34.8 -1.9 -149.0 -2 1 1 2572
07 00 00 --- 01 42 29 41.2 18.0 -0.9 -163.9 3598 F 1 3832

07 00 00 0235+164 01 42 29 41.2 18.0 -0.9 -163.9 -2 1 1 3832
08 00 00 --- 02 42 38 43.1 -1.3 0.1 178.8 3598 F 1 5092

08 00 00 0235+164 02 42 38 43.1 -1.3 0.1 178.8 -2 1 1 5092
09 00 00 --- 03 42 48 40.6 -20.4 1.1 161.7 3598 F 1 6352

09 00 00 0235+164 03 42 48 40.6 -20.4 1.1 161.7 -2 1 1 6352
09 30 00 --- 04 12 53 37.9 -29.0 1.6 154.1 1798 F 1 6982

09 30 00 0420-014 04 12 53 60.9 5.3 -0.2 -175.4 -71 1 1 6982
09 40 00 --- 04 22 55 61.0 0.2 0.0 -179.9 529 F 1 7192

----------- Tape Change ------------

09 44 00 0235+164 04 26 56 36.3 -32.8 1.8 150.8 164 1 1 52
10 00 00 --- 04 42 58 34.3 -36.8 2.1 147.3 960 F 1 388

10 00 00 0235+164 04 42 58 34.3 -36.8 2.1 147.3 -2 1 1 388
11 00 00 --- 05 43 08 25.4 -49.9 3.1 136.4 3598 F 1 1648

11 00 00 0235+164 05 43 08 25.4 -49.9 3.1 136.4 -2 1 1 1648
12 00 00 --- 06 43 18 14.7 -60.2 4.1 128.5 3598 F 1 2908

12 00 00 0235+164 06 43 18 14.7 -60.2 4.1 128.5 -2 1 1 2908
12 15 00 --- 06 58 20 11.9 -62.5 4.3 D 126.9 0 F 1 3223


SETUP FILE INFORMATION:
NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings.


Setup file: /home/sched/short-term/progs/sched_dec98/setups/vsop4800_s2.set
Matches group at6cm in /home/sched/short-term/progs/sched_dec98/catalogs/freq.dat

Setup group: 2 Station: ATCA Total bit rate: 128
Format: S2 Bits per sample: 2 Sample rate: 32.000
Number of channels: 2 Passes/head pos: 1 Speedup factor: 1.00

Tape speeds: Low density - 6.300 ips, High density - 4.20 ips
Time per pass for 7600 ft, High density tapes is: 06:01:54

LO sum= 4800.00 4816.00
1st LO= 4700.00 4700.00
Net SB= U U
Pol. = LCP LCP
BBC fr= 100.00 116.00
Bandwd= 16.00 16.00
BBC = 1 3
BBC SB= U U
IF = C C

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- VSOP observation of 0235+164 at 5 GHz
Catalog positions marked with *.
Position of date is for stop time of first scan.
Names used in schedule marked with *.
Short names used in VLA and SNAP files marked with +.

Source Source position (RA/Dec)
(B1950) (J2000) (Date)

J0238+1636 02 35 52.630207 * 02 38 38.930099 02 38 35.420160
* 0235+164 16 24 04.01677 * 16 36 59.27519 16 36 38.17201
J0238+16 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba
USNO - Ref Frame 1995-1, Eubanks Mar 1995

J0423-0120 04 20 43.539848 * 04 23 15.800725 04 23 13.069104
* 0420-014 -01 27 28.69911 *-01 20 33.06441 -01 20 54.69341
J0423-01 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba
USNO - Ref Frame 1995-1, Eubanks Mar 1995



The solar corona can cause unstable phases for sources too close to the Sun.
SCHED provides warnings at individual scans for distances less than 10 degrees.
The distance from the Sun to each source in this schedule is:
Source Sun distance (deg)
0235+164 90.4
0420-014 109.9

Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes
that the Sun will cause amplitude reductions on the longest VLBA baselines
at a solar distance of 60deg F^(-0.6) where F is in GHz.
For common VLBI bands, this is:
327 MHz 117. deg
610 MHz 81. deg
1.6 GHz 45. deg
2.3 GHz 36. deg
5.0 GHz 23. deg
8.4 GHz 17. deg
15.0 GHz 12. deg
22.0 GHz 9. deg
43.0 GHz 6. deg