Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/people/vlbi/vsop/schedules/jan01/v047psch.ho Дата изменения: Sun Jan 7 23:25:00 2001 Дата индексирования: Mon Jun 28 00:50:09 2010 Кодировка: Поисковые слова: m 31

COVER INFORMATION

Station: HOBART (Code Ho )
Experiment: VSOP observation of 1402+044 at 1.6 GHz
Exp. Code: v047p


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 : J1337-12




Schedule for HOBART (Code Ho ) Page 2
VSOP observation of 1402+044 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)
----------------------------------------------------------------------------------------

--- Sat 13 Jan 2001 Day 13 ---

Next scan frequencies: 1634.00 1650.00
Next BBC frequencies: 164.60 148.60
Next scan bandwidths: 16.00 16.00

20 00 00 J1337-12 13 23 13 60.0 7.1 -0.2 -174.7 0 1 1 52 20 00 00
20 10 00 --- 13 33 15 60.1 2.2 -0.1 -178.4 600 F 1 263

20 11 50 1402+044 13 35 05 42.5 10.2 -0.5 -172.6 82 1 1 301 20 11 50
21 00 00 --- 14 23 23 42.8 353.8 0.3 175.4 2890 F 1 1313

21 00 00 1402+044 14 23 23 42.8 353.8 0.3 175.4 -2 1 1 1313 21 00 00
22 00 00 --- 15 23 33 39.7 334.2 1.3 161.3 3598 F 1 2573

22 00 00 1402+044 15 23 33 39.7 334.2 1.3 161.3 -2 1 1 2573 22 00 00
23 00 00 --- 16 23 43 33.5 317.2 2.3 150.0 3598 F 1 3833

23 00 00 1402+044 16 23 43 33.5 317.2 2.3 150.0 -2 1 1 3833 23 00 00
23 50 00 --- 17 13 51 26.5 305.1 3.1 143.0 2998 F 1 4883

23 51 50 J1337-12 17 15 41 34.6 285.5 3.6 133.5 66 1 1 4921 23 51 50
23 59 59 --- 17 23 52 33.1 283.9 3.8 133.0 489 F 1 5093


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 ho18cm in /home/sched/short-term/progs/current/catalogs/freq.dat
LO from M Costa, e-mail 24/03/97 other values guesses

Setup group: 3 Station: HOBART 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= 1798.60 1798.60
Net SB= U U
Pol. = LCP LCP
BBC = 1 3
BBC SB= L L
IF = 1N 1N

The following frequency sets based on this setup were used.

Frequency Set: 3 Setup file default. No pcal detection.
LO sum= 1634.00 1650.00
BBC fr= 164.60 148.60
Bandwd= 16.000 16.000

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- VSOP observation of 1402+044 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)

J1337-1257 13 34 59.803871 * 13 37 39.782776 13 37 42.084454
1334-127 -12 42 09.74295 *-12 57 24.69323 -12 57 35.52690
* J1337-12 /home/sched/short-term/progs/current/catalogs/sources.vlba
USNO - Ref Frame 1998-6, Eubanks June 1998

J1405+0415 14 02 29.977460 * 14 05 01.119810 14 05 03.082355
* 1402+044 04 29 55.30159 * 04 15 35.81900 04 15 19.88847
J1405+04 /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)
J1337-12 86.5
1402+044 86.4

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