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COVER INFORMATION

Station: ATCA (Code At )
Experiment: 13 cm disk-based recorders test
Exp. Code: v999


Schedule Version: 1.00
Processed by SCHED version: Release of 18 Sept. 2003

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: J0006-0623



Schedule for ATCA (Code At ) Page 2
13 cm disk-based recorders test
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. Frequencies are LO sum (band edge).
----------------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes TPStart
Stop UT LST EL AZ HA UP ParA Dwell (see above)
----------------------------------------------------------------------------------------

--- Sun 18 Apr 2004 Day 109 ---

Next scan frequencies: 2274.00 2274.00
Next BBC frequencies: 274.00 274.00
Next scan bandwidths: 16.00 16.00

03 00 00 J0006-0623 02 44 34 45.9 -65.3 2.6 127.9 0 1 1 52 03 00 00
03 10 00 --- 02 54 36 43.9 -67.4 2.8 126.7 600 F 1 263

03 10 00 J0006-0623 02 54 36 43.9 -67.4 2.8 126.7 -3 1 1 263 03 10 00
03 20 00 --- 03 04 37 41.9 -69.4 3.0 125.6 597 F 1 473

03 20 00 J0006-0623 03 04 37 41.9 -69.4 3.0 125.6 -3 1 1 473 03 20 00
03 30 00 --- 03 14 39 39.8 -71.3 3.1 124.6 597 F 1 683

03 30 00 J0006-0623 03 14 39 39.8 -71.3 3.1 124.6 -3 1 1 683 03 30 00
03 40 00 --- 03 24 41 37.8 -73.1 3.3 123.8 597 F 1 893

03 40 00 J0006-0623 03 24 41 37.8 -73.1 3.3 123.8 -3 1 1 893 03 40 00
03 50 00 --- 03 34 42 35.7 -74.8 3.5 123.0 597 F 1 1103

03 50 00 J0006-0623 03 34 42 35.7 -74.8 3.5 123.0 -3 1 1 1103 03 50 00
04 00 00 --- 03 44 44 33.6 -76.5 3.6 122.4 597 F 1 1313

04 00 00 J0006-0623 03 44 44 33.6 -76.5 3.6 122.4 -3 1 1 1313 04 00 00
04 10 00 --- 03 54 46 31.5 -78.0 3.8 121.8 597 F 1 1523

04 10 00 J0006-0623 03 54 46 31.5 -78.0 3.8 121.8 -3 1 1 1523 04 10 00
04 20 00 --- 04 04 47 29.4 -79.6 4.0 121.3 597 F 1 1733

04 20 00 J0006-0623 04 04 47 29.4 -79.6 4.0 121.3 -3 1 1 1733 04 20 00
04 30 00 --- 04 14 49 27.2 -81.0 4.1 120.9 597 F 1 1943

04 30 00 J0006-0623 04 14 49 27.2 -81.0 4.1 120.9 -3 1 1 1943 04 30 00
04 40 00 --- 04 24 50 25.1 -82.4 4.3 120.6 597 F 1 2153

04 40 00 J0006-0623 04 24 50 25.1 -82.4 4.3 120.6 -3 1 1 2153 04 40 00
04 50 00 --- 04 34 52 22.9 -83.8 4.5 120.3 597 F 1 2363

04 50 00 J0006-0623 04 34 52 22.9 -83.8 4.5 120.3 -3 1 1 2363 04 50 00
05 00 00 --- 04 44 54 20.8 -85.2 4.6 120.1 597 F 1 2573

05 00 00 J0006-0623 04 44 54 20.8 -85.2 4.6 120.1 -3 1 1 2573 05 00 00
05 10 00 --- 04 54 55 18.6 -86.5 4.8 119.9 597 F 1 2783
Schedule for ATCA (Code At ) Page 3
13 cm disk-based recorders test
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. Frequencies are LO sum (band edge).
----------------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes TPStart
Stop UT LST EL AZ HA UP ParA Dwell (see above)
----------------------------------------------------------------------------------------

--- Sun 18 Apr 2004 Day 109 ---

05 10 00 J0006-0623 04 54 55 18.6 -86.5 4.8 119.9 -3 1 1 2783 05 10 00
05 20 00 --- 05 04 57 16.5 -87.8 5.0 119.8 597 F 1 2993

05 20 00 J0006-0623 05 04 57 16.5 -87.8 5.0 119.8 -3 1 1 2993 05 20 00
05 30 00 --- 05 14 59 14.3 -89.1 5.1 119.7 597 F 1 3203

05 30 00 J0006-0623 05 14 59 14.3 -89.1 5.1 119.7 -3 1 1 3203 05 30 00
05 40 00 --- 05 25 00 12.1 -90.3 5.3 119.7 597 F 1 3413

05 40 00 J0006-0623 05 25 00 12.1 -90.3 5.3 119.7 -3 1 1 3413 05 40 00
05 50 00 --- 05 35 02 10.0 -91.6 5.5 D 119.7 0 F 1 3623

05 50 00 J0006-0623 05 35 02 10.0 -91.6 5.5 D 119.7 -3 1 1 3623 05 50 00
06 00 00 --- 05 45 04 7.8 -92.8 5.6 D 119.8 0 F 1 3833

06 00 00 VELA 05 45 04 53.7 126.3 -2.8 -80.7 -335 1 1 3833 06 00 00
06 30 00 --- 06 15 09 58.9 128.4 -2.3 -73.7 1465 F 1 4463


SETUP FILE INFORMATION:
NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings.


Setup file: test.set
Matches group at13cm in /nfs/atapplic/vlbi/sched/catalogs/freq.dat

Setup group: 1 Station: ATCA 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= 2000.00 2000.00
Net SB= U U
Pol. = RCP LCP
BBC = 1 2
BBC SB= U U
IF = A C

The following frequency sets based on this setup were used.

Frequency Set: 1 Setup file default. No pcal detection.
LO sum= 2274.00 2274.00
BBC fr= 274.00 274.00
Bandwd= 16.000 16.000

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- 13 cm disk-based recorders 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).

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

* J0006-0623 00 03 40.288679 * 00 06 13.892800 00 06 25.253814
-06 40 17.29857 *-06 23 35.33400 -06 22 20.13321
From catalog imbedded in main SCHED input file.

* VELA 08 33 39.232780 * 08 35 20.611530 08 35 28.811044
-45 00 09.23882 *-45 10 34.87550 -45 11 38.61432
From catalog imbedded in main SCHED input file.



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)
J0006-0623 30.2
VELA 106.4

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