Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/people/vlbi/vsop/schedules/jan01/v047asch.mp Дата изменения: Fri Jan 12 01:23:00 2001 Дата индексирования: Mon Jun 28 00:50:05 2010 Кодировка:

COVER INFORMATION

Station: MOPRA (Code Mp )
Experiment: VSOP observation of 1442+101 at 1.6 GHz
Exp. Code: v047a


Schedule Version: 1.00
Processed by SCHED version: Release of 28 April 2000

PI: L.I. Gurvits

Address: JIVE and NFRA
Postbus 2
7990 AA Dwingeloo The Netherlands


Phone: +31 521 595100
EMAIL: lgurvits@jive.nl
Fax: +31 521 597332
Phone during observation:

Observing mode: VSOP, 1.6 GHz continuum, 128-2-2

Notes: Fringe finder : 1548+056




Schedule for MOPRA (Code Mp ) Page 2
VSOP observation of 1442+101 at 1.6 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.
TPStart: Tape motion start time.
----------------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes TPStart
Stop UT LST EL AZ HA UP ParA Dwell (see above)
----------------------------------------------------------------------------------------

--- Thu 25 Jan 2001 Day 25 ---

Next scan frequencies: 1634.00 1650.00
Next BBC frequencies: 634.00 650.00
Next scan bandwidths: 16.00 16.00

18 00 00 1442+101 12 16 43 35.5 46.9 -2.5 -140.7 0 1 1 52 18 00 00
19 00 00 --- 13 16 53 43.6 30.8 -1.5 -153.6 3600 F 1 1312

19 00 00 1442+101 13 16 53 43.6 30.8 -1.5 -153.6 -2 1 1 1312 19 00 00
19 55 00 --- 14 12 02 48.0 12.3 -0.6 -169.4 3298 F 1 2467

19 56 50 1548+056 14 13 52 46.6 36.4 -1.6 -149.4 72 1 1 2506 19 56 50
20 02 00 --- 14 19 03 47.2 34.8 -1.5 -150.7 310 F 1 2614

22 23 00 1548+056 16 40 26 51.4 -20.1 0.8 162.8 8376 1 1 2669 22 23 00
22 28 00 --- 16 45 27 51.0 -22.0 0.9 161.2 300 F 1 2774

22 29 50 1442+101 16 47 17 39.4 -40.3 2.0 145.8 73 1 1 2813 22 29 50
23 00 00 --- 17 17 32 34.9 -47.8 2.5 140.0 1810 F 1 3446

23 00 00 1442+101 17 17 32 34.9 -47.8 2.5 140.0 -2 1 1 3446 23 00 00
23 30 00 --- 17 47 37 29.9 -54.3 3.0 135.2 1798 F 1 4076

--- Start: Thu 25 Jan 2001 Day 25 -- Stop: Fri 26 Jan 2001 Day 26 ---

23 30 00 1442+101 17 47 37 29.9 -54.3 3.0 135.2 -2 1 1 4076 23 30 00
00 30 00 --- 18 47 47 18.8 -65.1 4.0 128.1 3598 F 1 5336

00 30 00 1442+101 18 47 47 18.8 -65.1 4.0 128.1 -2 1 1 5336 00 30 00
01 04 00 --- 19 21 53 12.1 -70.3 4.6 125.3 2038 F 1 6050

01 05 50 1548+056 19 23 43 27.3 -63.9 3.6 129.6 62 1 1 6089 01 05 50
01 11 00 --- 19 28 54 26.3 -64.8 3.6 129.0 310 F 1 6197


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/current/setups/vsop1634_s2.set
Matches group mp20cm in /home/sched/short-term/progs/current/catalogs/freq.dat

Setup group: 2 Station: MOPRA 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

1st LO= 1000.00 1000.00
Net SB= U U
Pol. = LCP LCP
BBC = 1 3
BBC SB= U U
IF = C C

The following frequency sets based on this setup were used.

Frequency Set: 1 Setup file default. No pcal detection.
LO sum= 1634.00 1650.00
BBC fr= 634.00 650.00
Bandwd= 16.000 16.000

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- VSOP observation of 1442+101 at 1.6 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)

J1445+0958 14 42 50.483783 * 14 45 16.465233 14 45 18.486542
* 1442+101 10 11 12.14428 * 09 58 36.07254 09 58 17.90315
J1445+09 /home/sched/short-term/progs/current/catalogs/sources.vlba
OQ172 USNO - Ref Frame 1998-6, Eubanks June 1998

J1550+0527 15 48 06.931008 * 15 50 35.269241 15 50 36.971979
* 1548+056 05 36 11.23062 * 05 27 10.44815 05 26 57.70541
J1550+05 /home/sched/short-term/progs/current/catalogs/sources.vlba
USNO - Ref Frame 1998-6, Eubanks June 1998



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)
1442+101 90.5
1548+056 73.7

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