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COVER INFORMATION

Station: ATCA (Code At )
Experiment: ATCA/MOPRA 3 mm test
Exp. Code: vt04a


Schedule Version: 1.00
Processed by SCHED version: 6.02 July 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:



Schedule for ATCA (Code At ) Page 2
ATCA/MOPRA 3 mm 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).
SYNC: Time correlator is expected to sync up.
----------------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes TPStart
Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC
----------------------------------------------------------------------------------------

--- Sat 27 Aug 2005 Day 239 ---

Next scan frequencies: 1642.00 1642.00
Next BBC frequencies: 442.00 442.00
Next scan bandwidths: 16.00 16.00

14 00 00 1921-293 22 21 54 51.9 -99.9 2.9 102.9 0 1 1 52 14 00 00
14 30 00 --- 22 51 59 45.5-102.2 3.4 104.8 1800 F 1 682 14 00 10

14 30 00 OCETI 22 51 59 33.9 71.3 -3.5 -125.0 -266 1 1 682 14 30 00
15 30 00 --- 23 52 09 45.7 59.1 -2.5 -132.1 3334 F 1 1942 14 30 10

15 30 00 1921-293 23 52 09 33.0-107.2 4.4 109.0 -255 1 1 1942 15 30 00
17 00 00 --- 01 22 23 14.8-115.5 6.0 116.8 5145 F 1 3832 15 30 10


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


Setup file: /nfs/atapplic/vlbi/sched/setups/lba18cm-2p-1IF.set
Matches group at20cm 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 used at high density at 4.200 ips.
Time per pass is 361.90 minutes.

1st LO= 1200.00 1200.00
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= 1642.00 1642.00
BBC fr= 442.00 442.00
Bandwd= 16.000 16.000

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- ATCA/MOPRA 3 mm 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)

* OCETI 02 16 49.008472 * 02 19 20.720000 02 19 38.283243 0.00
-03 12 22.52893 *-02 58 36.80000 -02 56 51.68913 0.00
From catalog imbedded in main SCHED input file.
1.000 scan hours, 0.923 baseline hours above horizon.

* 1921-293 19 21 42.234073 * 19 24 51.055900 19 25 13.302914 0.00
-29 20 26.35290 *-29 14 30.12000 -29 13 57.77894 0.00
From catalog imbedded in main SCHED input file.
2.000 scan hours, 1.926 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)
OCETI 121.4
1921-293 133.7

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