Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/pub/people/vlbi/vt03/vt03a0/vt03a0.sum Дата изменения: Mon May 2 07:00:43 2005 Дата индексирования: Wed Dec 26 18:25:23 2007 Кодировка: Поисковые слова: http www.astronomy.ru forum index.php topic 4644.0.html

SUMMARY FILE FOR PROJECT: vt03a0

COVER INFORMATION:

Experiment: 20cm NZ test
Exp. Code: vt03a0
Start Day 124 is Wed 4 May 2005 MJD 53494

Schedule Version: 1.00
Processed by SCHED version: 6.01 Release: Late March 2005

PI: Steven Tingay

Address: Swinburne University of Technology
Mail number 31
P.O. Box 218, Hawthorn, Victoria 3122, Australia


Phone: +61-03-92148758
EMAIL: stingay@astro.swin.edu.au
Fax: +61-03-92148797
Phone during observation:

Observing mode: LBA, 2.3 GHz continuum, 128-2-2

Notes:
Fringe finders:




No cover letter provided.

CORRELATION REQUESTS (Defaults in parentheses):

Correlator (Required if recording): LBA
Correlator average time (2 sec): 2.000 sec.
Alternate average time (for spacecraft). 0.000 sec.
Spectral channels per baseband (16): 32
Number of antennas to be correlated: 5
Polarization (ON): OFF
Correlator weighting function (UNIFORM): UNIFORM
Distribution tape (DAT): DAT
Source positions from: STANDARD


Shipping address for correlator output:
Steven Tingay
Swinburne
Hawthorn, Victoria, Australia


Correlator Notes:







DERIVED INFORMATION FOR CORRELATION:

Elapsed time for project: 2.00 hours.
Total time in scheduled scans: 2.00 hours.
Total time in recording scans: 2.00 hours.
Total number of baseline hours: 2.00 (Recording scans only)
Projected maximum data output rate from the correlator: 0.0 kbytes/sec
if processed in one pass.
Projected correlator output data set size: 0.0 Mbytes
NOTE: Above numbers assume the same correlator parameters are used for all data.



STATIONS USED IN SCHEDULE:

Station Code Latitude Longitude Elevation X Y Z

TID70_S2 Ti -35.40243-148.98127 689. -4460894.73 2682361.53 -3674748.42


RECORDING SYSTEM INFORMATION:

TAPES - Stations potentially recording on tape.
(See setup details later for times per pass.)
Station Drives Head pos Tape len Density Start position Auto Auto Recorder
(ft) Driv Head indx Aloc Reverse
TID70_S2 8 1 7600 High 1 1 No No S2




EXPERIMENT SUMMARY:
Number of input scans: 1
Number of scans scheduled: 1
Number of stations: 1
Number of sources input: 1
Number of setup files used: 1

Station summaries (tape stations):
Station Control Scans Scan Hours Tape hours Tapes Passes Readbacks
TID70_S2 VEX 1 2.00 2.00 1 1 0

Station summaries (disk stations):
Station Control Scans Scan Hours Record hrs Gbytes





Setup file: /nfs/atapplic/vlbi/sched/setups/lba18cm-2p-1IF.set
Matches group ti18cm in /nfs/atapplic/vlbi/sched/catalogs/freq.dat
LO from Harbison, e-mail 20/03/97. other values guesses

Setup group: 1 Station: TID70_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

1st LO= 1380.00 1380.00
Net SB= U U
Pol. = RCP LCP
BBC = 1 2
BBC SB= U U
IF = 2N 1N

The following frequency sets based on this setup were used.

Frequency Set: 1 Setup file default. No pcal detection.
LO sum= 1642.00 1642.00
BBC fr= 262.00 262.00
Bandwd= 16.000 16.000

Track assignments are:
track1= 0, 0
barrel=roll_off


 SUMMARY for experiment vt03a0 20cm NZ test
Top item is: Start elevation, flag (D=>Down, H=>Below Horizon, t=>Tape Change.)
Bottom item is: End elevation, flag (D=>Down, H=>Below Horizon, t=>Tape Change.)
TYPE top: -=> normal scan, P=>Pointing or Ta; bottom: -=>recording, N=>not recording.
Day 124 is Wed 4 May 2005 MJD 53494

DAY START UT SOURCE TYPE STATIONS t => tape change
STOP UT Ti

124 04:15:00 0208-512 - 56
124 06:15:00 a18cm-2p-1IF - 37



 SUMMARY for experiment vt03a0 20cm NZ test
Top item is: Scan end: Tape drive, direction, and head index. Disk Gbytes.
Bottom item is: Headset and start tape footage (thousands).
TYPE top: -=> normal scan, P=>Pointing or Ta; bottom: -=>recording, N=>not recording.
Day 124 is Wed 4 May 2005 MJD 53494

DAY START UT SOURCE TYPE STATIONS t => tape change
STOP UT Ti

124 04:15:00 0208-512 - 1F01
124 06:15:00 a18cm-2p-1IF - 1/00



 SUMMARY for experiment vt03a0 20cm NZ test
Top item is: Seconds antenna is on source before scan start.
Bottom item is: Seconds antenna is on source during scan.
TYPE top: -=> normal scan, P=>Pointing or Ta; bottom: -=>recording, N=>not recording.
Day 124 is Wed 4 May 2005 MJD 53494

DAY START UT SOURCE TYPE STATIONS t => tape change
STOP UT Ti

124 04:15:00 0208-512 - 0
124 06:15:00 a18cm-2p-1IF - 7200



TAPE TIMES (Without autoallocation):

Tape start time. Tape end time.
Station Day Time Day Time
(UT) (UT)

TID70_S2 124 04:15:00 124 06:15:00
 SOURCE LIST -- 20cm NZ test
Catalog positions marked with *.
Precession of date coordinates is based on stop time of first scan.
Names used in schedule marked with *.
Short names used in VLA and SNAP files marked with +.
Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900
No adjustments are made for rates (DRA, DDEC).
Scan hours are for recording scans only.
Baseline hours are only counted for scans above horizon at both ends.

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

* 0208-512 02 08 56.947160 * 02 10 46.200412 02 10 56.125547 0.00
-51 15 07.67909 *-51 01 01.89187 -50 59 30.02961 0.00
From catalog imbedded in main SCHED input file.
2.000 scan hours, 0.000 baseline hours above horizon.



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)
0208-512 67.4

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


Source separations in degrees for pairs closer than 30.00 degrees.






J2000 coordinates formatted for possible transfer to the correlator data base:
name = '0208-512' ra = 02h10m46.200412s dec = -51d01'01.89187"


Catalogs:
Station: /nfs/atapplic/vlbi/sched/catalogs/stations.dat
Version: 2005Feb28-16:32:35
Location: /nfs/atapplic/vlbi/sched/catalogs/locations.dat
Version: 08 Mar 2004
Frequency: /nfs/atapplic/vlbi/sched/catalogs/freq.dat
Version: 2005Feb28-16:32:35
Source: none
Version: ---


Code versions:
Release version: 6.01 Release: Late March 2005
Version of VEX standard: 1.50
Version of VEX code: 0.84
Version of plot code: 1.05
Version of ephemeris code: 1.01
Version of PGPLOT: v5.2.2