Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/people/vlbi/vsop/schedules/apr99/w071tsch.hh Дата изменения: Mon Apr 5 03:03:00 1999 Дата индексирования: Mon Jun 28 00:41:36 2010 Кодировка: Поисковые слова: solar eclipse

COVER INFORMATION

Station: HART_S2 (Code Hh )
Experiment: VSOP observation of J1146-24 at 1.6 GHz
Exp. Code: w071t


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

PI: Seiji Kameno

Address: 2-21-1 Osawa, Mitaka, Tokyo
181-8588 Japan



Phone: +81-422-34-3807
EMAIL: kameno@hotaka.mtk.nao.ac.jp
Fax: +81-422-34-3869
Phone during observation:

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

Notes: Fringe finder : J1037-2934




Schedule for HART_S2 (Code Hh ) Page 2
VSOP observation of J1146-24 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)
-------------------------------------------------------------------------------

--- Fri 23 Apr 1999 Day 113 ---

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

13 44 00 J1037-2934 05 39 24 25.2 112.2 -5.0 -106.8 0 1 1 52
13 54 00 =1034-293 05 49 25 27.2 111.5 -4.8 -105.8 600 F 1 263

13 54 00 J1146-24 05 49 25 11.2 112.3 -5.9 D -113.5 -6 1 1 263
14 00 00 --- 05 55 26 12.5 111.7 -5.8 D -113.0 0 F 1 389

14 00 00 J1146-24 05 55 26 12.5 111.7 -5.8 D -113.0 -2 1 1 389
14 10 00 --- 06 05 28 14.6 110.8 -5.7 -112.1 0 F 1 599

14 10 00 J1146-24 06 05 28 14.6 110.8 -5.7 -112.1 -2 1 1 599
14 20 00 --- 06 15 30 16.7 109.9 -5.5 -111.3 598 F 1 809

14 20 00 J1146-24 06 15 30 16.7 109.9 -5.5 -111.3 -2 1 1 809
14 30 00 --- 06 25 31 18.8 109.1 -5.3 -110.5 598 F 1 1019

14 30 00 J1146-24 06 25 31 18.8 109.1 -5.3 -110.5 -2 1 1 1019
14 40 00 --- 06 35 33 21.0 108.2 -5.2 -109.8 598 F 1 1229

14 40 00 J1146-24 06 35 33 21.0 108.2 -5.2 -109.8 -2 1 1 1229
14 50 00 --- 06 45 34 23.1 107.4 -5.0 -109.0 598 F 1 1439

14 50 00 J1146-24 06 45 34 23.1 107.4 -5.0 -109.0 -2 1 1 1439
15 00 00 --- 06 55 36 25.3 106.6 -4.8 -108.3 598 F 1 1649

15 00 00 J1146-24 06 55 36 25.3 106.6 -4.8 -108.3 -2 1 1 1649
16 00 00 --- 07 55 46 38.4 102.1 -3.8 -104.3 3598 F 1 2909

16 00 00 J1146-24 07 55 46 38.4 102.1 -3.8 -104.3 -2 1 1 2909
16 30 00 --- 08 25 51 45.0 100.0 -3.3 -102.6 1798 F 1 3539

16 30 00 J1146-24 08 25 51 45.0 100.0 -3.3 -102.6 -2 1 1 3539
17 00 00 --- 08 55 56 51.7 97.9 -2.8 -101.0 1798 F 1 4169

17 00 00 J1146-24 08 55 56 51.7 97.9 -2.8 -101.0 -2 1 1 4169
18 00 00 --- 09 56 06 65.2 93.5 -1.8 -98.5 3598 F 1 5429


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 hh18cm in /home/sched/short-term/progs/sched_dec98/catalogs/freq.dat
Guess only. 1st LOs are wrong _JEJL/PGE 22-Sep-97

Setup group: 3 Station: HART_S2 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 J1146-24 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)

* J1037-2934 10 34 55.824594 * 10 37 16.079706 10 37 14.524542
+ 1034-293 -29 18 26.97141 *-29 34 02.81230 -29 34 01.29248
J1037-29 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba
USNO - Ref Frame 1995-1, Eubanks Mar 1995

J1146-2447 11 43 36.367481 * 11 46 08.103399 11 46 06.569833
1143-245 -24 30 52.83769 *-24 47 32.89616 -24 47 25.67140
* J1146-24 /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)
J1037-2934 129.5
1034-293 129.5
J1146-24 145.4

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