COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: BJ054 - VLBA+Y27+GBT+Ar 18cm obs of B1030+074 Exp. Code: BJ054 Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Neal Jackson Address: University of Manchester, Jodrell Bank Observatory Macclesfield, Cheshire SK11 9DL Phone: +44 1477 572617 (work); +44 161 9805810 (home) EMAIL: njj@jb.man.ac.uk Fax: +44 1477 571618 Phone during observation: +44 161 9805810 Observing mode: VLBA 256-8-2 at 18cm Notes: 256 Mbps Schedule for VLBA_MK (Code Mk ) Page 2 BJ054 - VLBA+Y27+GBT+Ar 18cm obs of B1030+074 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 27 Dec 2004 Day 362 --- Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 06 07 00 B0528+134 02 09 27 41.4 89.2 -3.4 -75.4 0 1 1 0 06 07 00 06 12 00 --- 02 14 28 42.6 89.6 -3.3 -75.4 300 F 1 4000 08 54 00 B1038+064 04 56 55 5.7 85.5 -5.7 -70.6 9640 1 1 4000 08 54 00 08 55 21 --- 04 58 16 6.0 85.6 -5.7 -70.7 81 F 1 5080 08 55 21 B1030+074 04 58 16 8.1 85.3 -5.6 -70.9 -10 1 1 5080 08 55 21 09 02 00 --- 05 04 56 9.7 85.8 -5.5 -71.0 389 F 1 10400 09 02 00 B1038+064 05 04 56 7.6 86.2 -5.6 -70.8 -10 1 1 10400 09 02 00 09 03 21 --- 05 06 17 7.9 86.3 -5.6 -70.8 71 F 1 11480 09 03 21 B1030+074 05 06 17 10.0 85.9 -5.5 -71.1 -10 1 1 11480 09 03 21 09 10 00 --- 05 12 57 11.6 86.5 -5.3 -71.2 389 F 1 16800 09 10 00 B1038+064 05 12 57 9.4 86.8 -5.5 -70.9 -10 1 2 16800 09 10 00 09 11 21 --- 05 14 18 9.8 86.9 -5.5 -70.9 71 R 1 17320 09 11 21 B1030+074 05 14 18 11.9 86.6 -5.3 -71.2 -10 1 2 17320 09 11 21 09 16 00 --- 05 18 58 13.0 87.0 -5.2 -71.3 269 R 1 13600 09 19 00 B1038+064 05 21 59 11.6 87.6 -5.3 -71.0 171 1 2 13600 09 19 00 09 20 21 --- 05 23 20 11.9 87.7 -5.3 -71.0 81 R 1 12520 09 20 21 B1030+074 05 23 20 14.0 87.3 -5.2 -71.3 -10 1 2 12520 09 20 21 09 27 00 --- 05 30 00 15.6 87.9 -5.1 -71.4 389 R 1 7200 09 27 00 B1038+064 05 30 00 13.4 88.2 -5.2 -71.1 -10 1 2 7200 09 27 00 09 28 21 --- 05 31 21 13.8 88.3 -5.2 -71.1 71 R 1 6120 09 28 21 B1030+074 05 31 21 15.9 88.0 -5.0 -71.4 -10 1 2 6120 09 28 21 09 35 00 --- 05 38 01 17.5 88.5 -4.9 -71.4 389 R 1 800 09 35 00 B1038+064 05 38 01 15.3 88.9 -5.1 -71.1 -10 1 3 800 09 35 00 09 36 21 --- 05 39 23 15.7 89.0 -5.0 -71.1 71 F 1 280 Schedule for VLBA_MK (Code Mk ) Page 3 BJ054 - VLBA+Y27+GBT+Ar 18cm obs of B1030+074 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 27 Dec 2004 Day 362 --- 09 36 21 B1030+074 05 39 23 17.8 88.6 -4.9 -71.4 -10 1 3 280 09 36 21 09 41 00 --- 05 44 02 18.9 89.0 -4.8 -71.5 269 F 1 4000 09 52 00 B1030+074 05 55 04 21.5 90.0 -4.6 -71.5 649 1 3 4000 09 52 00 10 00 00 --- 06 03 05 23.4 90.6 -4.5 -71.5 480 F 1 10400 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: my18cm.set Matches group v20cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 1 Station: VLBA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 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= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 BBC fr= 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- BJ054 - VLBA+Y27+GBT+Ar 18cm obs of B1030+074 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) * J1224+2122 12 22 23.408701 * 12 24 54.458386 12 25 09.217229 21 39 23.03699 * 21 22 46.38860 21 21 00.88684 From catalog imbedded in main SCHED input file. Used as fringe finder 0.167 scan hours, 8.635 baseline hours above horizon. * B1030+074 10 30 57.093157 * 10 33 34.051500 10 33 49.907945 07 26 55.04039 * 07 11 25.52200 07 09 54.95833 From catalog imbedded in main SCHED input file. Target source; pointing position is centre of 1.5-arcsec double, 200mJy at L-ban 2.771 scan hours, 165.121 baseline hours above horizon. * B1038+064 10 38 40.885554 * 10 41 17.162900 10 41 32.903378 06 25 58.53423 * 06 10 16.92500 06 08 45.27323 From catalog imbedded in main SCHED input file. VLA phase-up source. Should be 1.4Jy at L-band 0.713 scan hours, 33.970 baseline hours above horizon. * B0528+134 05 28 06.759213 * 05 30 56.416744 05 31 14.202420 13 29 42.28888 * 13 31 55.14955 13 32 14.89620 From catalog imbedded in main SCHED input file. Used as fringe finder for all except Arecibo 0.133 scan hours, 5.500 baseline hours above horizon. * 3C147 05 38 43.507669 * 05 42 36.128000 05 43 00.708588 49 49 42.78265 * 49 51 07.18000 49 51 23.92852 From catalog imbedded in main SCHED input file. Used as fluxcal for the VLA 0.267 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) J1224+2122 98.4 B1030+074 118.5 B1038+064 116.3 B0528+134 163.8 3C147 152.2 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