COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: VLBA/VLTI Obs. of S Ori Exp. Code: BB192b Schedule Version: 2.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Dave Boboltz Address: USNO 3450 Massachusetts Ave., NW Washington, DC 20392-5420, USA Phone: 202-762-1488 EMAIL: dboboltz@usno.navy.mil Fax: 202-762-1514 Phone during observation: 202-762-1488 Observing mode: Notes: RCP/LCP. 7mm VLBA 5hr track Schedule for VLBA_OV (Code Ov ) Page 2 VLBA/VLTI Obs. of S Ori 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). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Mon 28 Feb 2005 Day 59 --- Next scan frequencies: 42807.75 42807.75 43109.18 43109.18 Next BBC frequencies: 607.75 607.75 909.18 909.18 Next scan bandwidths: 8.00 8.00 8.00 8.00 23 36 57 0423-013 02 19 22 41.9 136.2 -2.1 -33.5 0 1 1 0 23 36 57 23 46 55 --- 02 29 22 43.3 139.0 -1.9 -31.5 598 F 1 7978 --- Start: Mon 28 Feb 2005 Day 59 -- Stop: Tue 1 Mar 2005 Day 60 --- 23 46 55 SORI 02 29 22 30.8 124.9 -3.0 -40.9 -31 1 2 7978 23 46 55 00 10 51 --- 02 53 22 34.6 130.4 -2.6 -37.5 1405 R 1 8074 00 10 51 SORI 02 53 22 34.6 130.4 -2.6 -37.5 -4 1 1 8074 00 10 51 00 34 47 --- 03 17 22 38.0 136.5 -2.2 -33.4 1432 F 2 11073 00 36 47 0423-013 03 19 22 48.7 155.3 -1.1 -19.5 92 1 2 11073 00 36 47 00 46 45 --- 03 29 22 49.4 158.9 -0.9 -16.7 598 R 2 16149 00 46 45 SORI 03 29 22 39.6 139.7 -2.0 -31.1 -26 1 3 16149 00 46 45 01 10 41 --- 03 53 22 42.5 146.7 -1.6 -26.0 1410 F 1 2999 01 10 41 SORI 03 53 22 42.5 146.7 -1.6 -26.0 -4 1 4 2999 01 10 41 01 34 37 --- 04 17 22 44.9 154.3 -1.2 -20.3 1432 R 1 13053 01 36 37 0359+509 04 19 22 75.8 -12.6 0.3 164.0 2 1 4 13053 01 36 37 01 46 35 --- 04 29 22 75.3 -18.6 0.5 156.3 598 R 1 5075 01 46 35 SORI 04 29 22 45.8 158.3 -1.0 -17.2 -124 1 3 5075 01 46 35 02 10 31 --- 04 53 22 47.3 166.8 -0.6 -10.5 1312 F 2 14072 02 10 31 SORI 04 53 22 47.3 166.8 -0.6 -10.5 -4 1 4 14072 02 10 31 02 34 28 --- 05 17 22 48.0 175.6 -0.2 -3.5 1432 R 2 1980 02 36 27 0423-013 05 19 22 49.3 201.7 0.9 17.1 96 1 5 1980 02 36 27 02 46 26 --- 05 29 22 48.5 205.3 1.1 19.9 598 F 1 5998 02 46 26 SORI 05 29 22 48.1 180.0 0.0 0.0 -23 1 6 5998 02 46 26 03 10 22 --- 05 53 22 47.7 188.9 0.4 7.1 1413 R 1 10054 03 10 22 SORI 05 53 22 47.7 188.9 0.4 7.1 -4 1 5 10054 03 10 22 03 34 18 --- 06 17 22 46.6 197.6 0.8 14.0 1432 F 2 9093 Schedule for VLBA_OV (Code Ov ) Page 3 VLBA/VLTI Obs. of S Ori 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). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Tue 1 Mar 2005 Day 60 --- 03 36 17 0423-013 06 19 22 43.0 221.5 1.9 31.8 98 1 5 9093 03 36 17 03 46 16 --- 06 29 22 41.7 224.3 2.1 33.8 598 F 2 17071 03 46 16 SORI 06 29 22 45.8 201.8 1.0 17.2 -21 1 7 17071 03 46 16 04 10 12 --- 06 53 22 43.7 209.7 1.4 23.3 1415 F 1 1019 04 10 12 SORI 06 53 22 43.7 209.7 1.4 23.3 -4 1 8 1019 04 10 12 04 37 07 --- 07 20 22 40.7 217.8 1.9 29.3 1612 R 1 12640 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bb192.set Matches group v7mm_b8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 2 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 42200.00 42200.00 42200.00 42200.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.4 11.6 The following frequency sets based on this setup were used. Frequency Set: 1 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 42807.75 42807.75 43109.18 43109.18 BBC fr= 607.75 607.75 909.18 909.18 Bandwd= 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26 track2= 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- VLBA/VLTI Obs. of S Ori 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) (B1950) (J2000) (Date) * 0423-013 04 20 43.539823 * 04 23 15.800700 04 23 31.090341 -01 27 28.69871 *-01 20 33.06400 -01 19 51.95013 From catalog imbedded in main SCHED input file. Doppler based on other sources. * 0359+509 03 55 45.261399 * 03 59 29.747300 03 59 51.755968 50 49 20.28605 * 50 57 50.16200 50 58 58.19947 From catalog imbedded in main SCHED input file. Doppler based on other sources. * SORI 05 26 32.603394 * 05 29 00.894800 05 29 16.146188 -04 43 53.21390 *-04 41 32.74800 -04 41 19.72834 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 18.00 18.00 18.00 18.00 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) 0423-013 83.7 0359+509 88.4 SORI 99.5 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