COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: GD017 format, 18 cm, Arp 220, Phil Diamond, November 2003 Exp. Code: GD017B Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Phil Diamond Address: MERLIN/VLBI National Facility Jodrell Bank, Macclesfield Cheshire, SK11 9DL England Phone: (+44) (0)1477 572625 EMAIL: pdiamond@jb.man.ac.uk Fax: (+44) (0)1477 571618 Phone during observation: (+44) (0)1477 572625 Observing mode: 256-8-2 Notes: Primary fringe finder 1613+341 Schedule for VLBA_HN (Code Hn ) Page 2 GD017 format, 18 cm, Arp 220, Phil Diamond, November 2003 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 7 Mar 2005 Day 66 --- Next scan frequencies: 1633.99 1633.99 1641.99 1641.99 1649.99 1649.99 1657.99 1657.99 Next BBC frequencies: 766.01 766.01 758.01 758.01 750.01 750.01 742.01 742.01 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 05 00 00 1613+341 11 12 08 32.3 71.4 -5.0 -57.0 0 1 1 0 05 00 00 05 06 00 --- 11 18 09 33.4 72.2 -4.9 -57.4 360 F 1 4800 05 06 00 ARP220 11 18 09 34.3 88.6 -4.3 -52.9 -17 1 1 4800 05 06 00 05 22 00 --- 11 34 11 37.2 91.3 -4.0 -52.9 943 F 1 17600 05 30 00 1613+341 11 42 12 37.6 75.4 -4.5 -58.9 463 1 2 17600 05 30 00 05 33 00 --- 11 45 13 38.2 75.8 -4.5 -59.1 180 R 1 15200 05 33 00 ARP220 11 45 13 39.2 93.3 -3.8 -52.8 -18 1 2 15200 05 33 00 05 52 00 --- 12 04 16 42.7 96.8 -3.5 -52.4 1122 R 1 0 05 53 00 ARP220 12 05 16 42.9 97.0 -3.5 -52.4 54 1 3 0 05 53 00 06 15 00 --- 12 27 20 46.9 101.4 -3.1 -51.5 1320 F 1 17600 06 17 00 ARP220 12 29 20 47.2 101.8 -3.1 -51.4 114 1 4 17600 06 17 00 06 39 00 --- 12 51 24 51.1 106.7 -2.7 -49.9 1320 R 1 0 06 41 00 ARP220 12 53 24 51.5 107.2 -2.7 -49.7 114 1 5 0 06 41 00 07 03 00 --- 13 15 28 55.3 112.8 -2.3 -47.4 1320 F 1 17600 07 10 00 1516+193 13 22 29 56.4 125.2 -1.9 -39.4 406 1 6 17600 07 10 00 07 13 00 --- 13 25 29 56.9 126.2 -1.9 -38.8 180 R 1 15200 07 13 00 ARP220 13 25 29 57.0 115.6 -2.2 -46.0 -13 1 6 15200 07 13 00 07 32 00 --- 13 44 33 60.0 121.6 -1.8 -42.9 1127 R 1 0 07 35 00 ARP220 13 47 33 60.5 122.6 -1.8 -42.3 173 1 7 0 07 35 00 07 57 00 --- 14 09 37 63.7 130.9 -1.4 -37.1 1320 F 1 17600 08 00 00 ARP220 14 12 37 64.1 132.2 -1.4 -36.3 173 1 8 17600 08 00 00 08 22 00 --- 14 34 41 66.9 142.5 -1.0 -29.1 1320 R 1 0 08 25 00 ARP220 14 37 41 67.2 144.0 -1.0 -28.0 173 1 9 0 08 25 00 08 47 00 --- 14 59 45 69.2 156.5 -0.6 -18.5 1320 F 1 17600 Schedule for VLBA_HN (Code Hn ) Page 3 GD017 format, 18 cm, Arp 220, Phil Diamond, November 2003 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 7 Mar 2005 Day 66 --- 08 50 00 1516+193 15 02 45 66.4 171.5 -0.2 -6.6 164 1 10 17600 08 50 00 09 00 00 --- 15 12 47 66.6 177.4 -0.1 -2.0 600 R 1 9600 09 00 00 ARP220 15 12 47 70.0 164.8 -0.4 -12.1 -14 1 10 9600 09 00 00 09 12 00 --- 15 24 49 70.4 172.9 -0.2 -5.7 706 R 1 0 09 15 00 ARP220 15 27 49 70.5 174.9 -0.1 -4.0 173 1 11 0 09 15 00 09 37 00 --- 15 49 53 70.3 190.0 0.2 8.0 1320 F 1 17600 09 40 00 ARP220 15 52 54 70.2 192.1 0.3 9.6 173 1 12 17600 09 40 00 10 02 00 --- 16 14 57 68.9 206.1 0.7 20.5 1320 R 1 0 10 05 00 1613+341 16 17 58 81.2 185.5 0.1 4.9 149 1 13 0 10 05 00 10 08 00 --- 16 20 58 81.2 189.6 0.1 8.5 180 F 1 2400 10 08 00 ARP220 16 20 58 68.4 209.6 0.8 23.2 -32 1 13 2400 10 08 00 10 27 00 --- 16 40 01 66.4 219.7 1.1 30.7 1108 F 1 17600 10 30 00 ARP220 16 43 02 66.0 221.2 1.1 31.7 173 1 14 17600 10 30 00 10 52 00 --- 17 05 05 63.1 230.8 1.5 38.2 1320 R 1 0 ----------- Tape Change ------------ 11 10 00 1613+341 17 23 08 73.9 242.8 1.2 51.9 1052 2 1 0 11 10 00 11 13 00 --- 17 26 09 73.4 244.2 1.2 52.8 180 F 1 2400 11 13 00 ARP220 17 26 09 60.0 238.5 1.8 42.9 -33 2 1 2400 11 13 00 11 32 00 --- 17 45 12 56.9 244.5 2.2 46.1 1107 F 1 17600 11 35 00 ARP220 17 48 12 56.4 245.4 2.2 46.5 173 2 2 17600 11 35 00 11 57 00 --- 18 10 16 52.7 251.2 2.6 49.1 1320 R 1 0 12 00 00 ARP220 18 13 17 52.1 252.0 2.6 49.4 173 2 3 0 12 00 00 12 22 00 --- 18 35 20 48.2 257.0 3.0 51.1 1320 F 1 17600 12 25 00 ARP220 18 38 21 47.7 257.7 3.1 51.2 173 2 4 17600 12 25 00 12 47 00 --- 19 00 24 43.7 262.1 3.4 52.3 1320 R 1 0 12 50 00 1613+341 19 03 25 56.1 269.5 2.8 62.3 149 2 5 0 12 50 00 12 53 00 --- 19 06 25 55.6 270.0 2.9 62.3 180 F 1 2400 12 53 00 ARP220 19 06 25 42.6 263.3 3.5 52.4 -32 2 5 2400 12 53 00 13 12 00 --- 19 25 28 39.2 266.8 3.8 52.8 1108 F 1 17600 Schedule for VLBA_HN (Code Hn ) Page 4 GD017 format, 18 cm, Arp 220, Phil Diamond, November 2003 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 7 Mar 2005 Day 66 --- 13 15 00 ARP220 19 28 29 38.6 267.3 3.9 52.9 173 2 6 17600 13 15 00 13 37 00 --- 19 50 32 34.6 271.1 4.3 52.9 1320 R 1 0 13 40 00 ARP220 19 53 33 34.0 271.6 4.3 52.9 173 2 7 0 13 40 00 14 02 00 --- 20 15 37 30.0 275.2 4.7 52.6 1320 F 1 17600 14 05 00 ARP220 20 18 37 29.4 275.7 4.7 52.6 173 2 8 17600 14 05 00 14 27 00 --- 20 40 41 25.4 279.2 5.1 52.0 1320 R 1 0 14 30 00 1613+341 20 43 41 38.0 284.3 4.5 59.0 149 2 9 0 14 30 00 14 36 00 --- 20 49 42 36.9 285.2 4.6 58.7 360 F 1 4800 14 36 00 ARP220 20 49 42 23.8 280.6 5.2 51.7 -32 2 9 4800 14 36 00 14 52 00 --- 21 05 45 20.9 283.1 5.5 51.0 928 F 1 17600 14 55 00 ARP220 21 08 45 20.4 283.6 5.6 50.9 173 2 10 17600 14 55 00 15 17 00 --- 21 30 49 16.5 287.0 5.9 49.8 1320 R 1 0 15 30 00 ARP220 21 43 51 14.2 289.0 6.1 49.0 769 2 11 0 15 30 00 15 52 00 --- 22 05 55 10.5 292.4 6.5 47.5 1320 F 1 17600 16 05 00 1613+341 22 18 57 21.7 297.1 6.1 52.0 752 2 12 17600 16 05 00 16 08 00 --- 22 21 57 21.2 297.6 6.1 51.7 180 R 1 15200 16 08 00 ARP220 22 21 57 7.8 295.0 6.8 46.4 -33 2 12 15200 16 08 00 16 27 00 --- 22 41 00 4.7 298.0 7.1 H 44.8 0 R 1 0 16 30 00 ARP220 22 44 01 4.2 298.5 7.1 H 44.5 173 2 13 0 16 30 00 16 52 00 --- 23 06 04 0.7 302.2 7.5 D 42.5 0 F 1 17600 17 35 00 1613+341 23 49 12 7.9 310.2 7.6 42.5 2563 2 14 17600 17 35 00 17 38 00 --- 23 52 12 7.5 310.6 7.6 42.2 180 R 1 15200 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: arp220.set Matches group v20cm_2 in /usr/local/vlbi_sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 7 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: 7 Setup file default. Used pcal sets: 1 LO sum= 1633.99 1633.99 1641.99 1641.99 1649.99 1649.99 1657.99 1657.99 BBC fr= 766.01 766.01 758.01 758.01 750.01 750.01 742.01 742.01 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= 10 10 10 10 6010 6010 6010 6010 PCALFR2= 10 10 10 10 6010 6010 6010 6010 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- GD017 format, 18 cm, Arp 220, Phil Diamond, November 2003 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) * ARP220 15 32 46.880196 * 15 34 57.224670 15 35 11.038195 23 40 07.99276 * 23 30 11.56400 23 28 50.20626 From catalog imbedded in main SCHED input file. 14.333 scan hours, 933.144 baseline hours above horizon. * 1516+193 15 14 40.987286 * 15 16 56.797600 15 17 11.234204 19 43 10.96935 * 19 32 13.01900 19 30 46.99831 From catalog imbedded in main SCHED input file. 0.217 scan hours, 32.847 baseline hours above horizon. * 1613+341 16 11 47.914510 * 16 13 41.064500 16 13 52.969205 34 20 19.83496 * 34 12 47.91000 34 11 37.69314 From catalog imbedded in main SCHED input file. 0.900 scan hours, 40.750 baseline hours above horizon. * 3C286 13 28 49.657708 * 13 31 08.288000 13 31 23.761925 30 45 58.64136 * 30 30 32.96000 30 28 43.26779 From catalog imbedded in main SCHED input file. 0.000 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) ARP220 114.1 1516+193 118.6 1613+341 104.8 3C286 138.5 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