Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/people/vlbi/vsop/schedules/mar99/v101esch.ho Дата изменения: Tue Mar 16 20:17:00 1999 Дата индексирования: Mon Jun 28 01:03:51 2010 Кодировка: Поисковые слова: m 63

COVER INFORMATION

Station: HOBART (Code Ho )
Experiment: VSOP observation of J1939-63 at 1.6 GHz
Exp. Code: v101e


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

PI: E.A. King

Address: CSIRO Earth Observation Centre
GPO Box 3023
Canberra, ACT 2601, Australia


Phone: 61 6 216 7234
EMAIL: Edward.King@eoc.csiro.au
Fax: 61 6 216 7222
Phone during observation:

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

Notes: Fringe finder : 2255-282




Schedule for HOBART (Code Ho ) Page 2
VSOP observation of J1939-63 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.
-------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes
Stop UT LST EL AZ HA UP ParA Dwell (see above)
-------------------------------------------------------------------------------

--- Wed 31 Mar 1999 Day 90 ---

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

23 00 00 J1939-63 21 25 15 64.2 207.0 1.8 48.7 0 1 1 52
23 30 00 --- 21 55 20 61.5 211.2 2.3 59.2 1800 F 1 682

23 30 00 J1939-63 21 55 20 61.5 211.2 2.3 59.2 -2 1 1 682
23 59 59 --- 22 25 25 58.5 214.2 2.8 68.5 1797 F 1 1312

--- Thu 1 Apr 1999 Day 91 ---

00 00 00 J1939-63 22 25 25 58.5 214.2 2.8 68.5 -2 1 1 1312
01 00 00 --- 23 25 35 52.0 216.9 3.8 84.3 3598 F 1 2572

01 00 00 J1939-63 23 25 35 52.0 216.9 3.8 84.3 -2 1 1 2572
02 00 00 --- 00 25 45 45.4 216.7 4.8 97.6 3598 F 1 3832

02 00 00 J1939-63 00 25 45 45.4 216.7 4.8 97.6 -2 1 1 3832
03 00 00 --- 01 25 55 38.9 214.6 5.8 109.7 3598 F 1 5092

03 00 00 J1939-63 01 25 55 38.9 214.6 5.8 109.7 -2 1 1 5092
03 30 00 --- 01 56 00 35.8 213.0 6.3 115.5 1798 F 1 5722

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

03 35 00 2255-282 02 01 01 50.4 276.7 3.0 124.4 216 1 1 52
03 45 00 --- 02 11 02 48.6 274.8 3.2 124.1 600 F 1 263

03 45 00 J1939-63 02 11 02 34.4 212.1 6.5 118.3 -85 1 1 263
04 00 00 --- 02 26 05 32.9 211.1 6.8 121.2 815 F 1 578

04 00 00 J1939-63 02 26 05 32.9 211.1 6.8 121.2 -2 1 1 578
05 00 00 --- 03 26 15 27.6 206.5 7.8 132.3 3598 F 1 1838

05 00 00 J1939-63 03 26 15 27.6 206.5 7.8 132.3 -2 1 1 1838
05 40 00 --- 04 06 21 24.5 203.0 8.5 139.8 2398 F 1 2678

05 40 00 J1939-63 04 06 21 24.5 203.0 8.5 139.8 -2 1 1 2678
06 00 00 --- 04 26 24 23.1 201.0 8.8 143.5 1198 F 1 3098

06 00 00 J1939-63 04 26 24 23.1 201.0 8.8 143.5 -2 1 1 3098
07 00 00 --- 05 26 34 19.7 194.9 9.8 154.8 3598 F 1 4358
Schedule for HOBART (Code Ho ) Page 3
VSOP observation of J1939-63 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.
-------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes
Stop UT LST EL AZ HA UP ParA Dwell (see above)
-------------------------------------------------------------------------------

--- Thu 1 Apr 1999 Day 91 ---

07 00 00 J1939-63 05 26 34 19.7 194.9 9.8 154.8 -2 1 1 4358
08 00 00 --- 06 26 44 17.5 188.3 10.8 166.1 3598 F 1 5618

08 00 00 J1939-63 06 26 44 17.5 188.3 10.8 166.1 -2 1 1 5618
09 00 00 --- 07 26 54 16.5 181.4 11.8 177.6 3598 F 1 6878


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/vsop1634_s2.set
Matches group ho18cm in /home/sched/short-term/progs/sched_dec98/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

LO sum= 1634.00 1650.00
1st LO= 1798.60 1798.60
Net SB= U U
Pol. = LCP LCP
BBC fr= 164.60 148.60
Bandwd= 16.00 16.00
BBC = 1 3
BBC SB= L L
IF = 1N 1N

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- VSOP observation of J1939-63 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)

J1939-6342 19 34 47.606607 * 19 39 25.026194 19 39 18.512026
1934-638 -63 49 37.72384 *-63 42 45.62547 -63 42 35.26892
* J1939-63 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba
USNO - Ref Frame 1995-1, Eubanks Mar 1995

J2258-2758 22 55 22.460654 * 22 58 05.962887 22 58 01.242895
* 2255-282 -28 14 25.61808 *-27 58 21.25607 -27 58 41.80084
J2258-27 /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)
J1939-63 87.5
2255-282 40.7

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