COVER INFORMATION Station: VLA27 (Code Y ) 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 VLA27 (Code Y ) 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: 623.89 623.89 602.09 602.09 610.09 610.09 618.09 618.09 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 05 30 00 1613+341 09 19 41 8.9 54.5 -6.9 -54.6 0 1 1 0 05 30 00 05 33 00 --- 09 22 41 9.4 54.8 -6.9 -55.0 180 F 1 2400 05 33 00 ARP220 09 22 41 10.5 68.6 -6.2 -57.3 -36 1 1 2400 05 33 00 05 52 00 --- 09 41 44 14.2 71.0 -5.9 -58.6 1104 F 1 17600 05 53 00 ARP220 09 42 45 14.4 71.1 -5.9 -58.7 44 1 2 17600 05 53 00 06 15 00 --- 10 04 48 18.7 73.8 -5.5 -60.1 1320 R 1 0 06 17 00 ARP220 10 06 49 19.1 74.1 -5.5 -60.3 104 1 3 0 06 17 00 06 39 00 --- 10 28 52 23.6 76.7 -5.1 -61.5 1320 F 1 17600 06 41 00 ARP220 10 30 53 24.0 76.9 -5.1 -61.6 104 1 4 17600 06 41 00 07 03 00 --- 10 52 56 28.4 79.6 -4.7 -62.6 1320 R 1 0 07 10 00 1516+193 10 59 57 31.7 86.8 -4.3 -61.3 394 1 5 0 07 10 00 07 13 00 --- 11 02 58 32.3 87.2 -4.2 -61.4 180 F 1 2400 07 13 00 ARP220 11 02 58 30.5 80.8 -4.5 -63.0 -25 1 5 2400 07 13 00 07 32 00 --- 11 22 01 34.4 83.1 -4.2 -63.7 1115 F 1 17600 07 35 00 ARP220 11 25 01 35.0 83.5 -4.2 -63.8 163 1 6 17600 07 35 00 07 57 00 --- 11 47 05 39.5 86.3 -3.8 -64.3 1320 R 1 0 08 00 00 ARP220 11 50 05 40.2 86.6 -3.8 -64.4 163 1 7 0 08 00 00 08 22 00 --- 12 12 09 44.7 89.6 -3.4 -64.6 1320 F 1 17600 08 25 00 ARP220 12 15 10 45.4 90.0 -3.3 -64.6 163 1 8 17600 08 25 00 08 47 00 --- 12 37 13 49.9 93.3 -3.0 -64.4 1320 R 1 0 08 50 00 1516+193 12 40 14 52.4 102.5 -2.6 -59.1 151 1 9 0 08 50 00 09 00 00 --- 12 50 15 54.4 104.6 -2.4 -58.3 600 F 1 8000 09 00 00 ARP220 12 50 15 52.6 95.3 -2.7 -64.0 -29 1 9 8000 09 00 00 09 12 00 --- 13 02 17 55.1 97.4 -2.5 -63.6 691 F 1 17600 Schedule for VLA27 (Code Y ) 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 --- 09 15 00 ARP220 13 05 18 55.7 97.9 -2.5 -63.4 163 1 10 17600 09 15 00 09 37 00 --- 13 27 21 60.2 102.3 -2.1 -61.9 1320 R 1 0 09 40 00 ARP220 13 30 22 60.8 103.0 -2.1 -61.6 163 1 11 0 09 40 00 10 02 00 --- 13 52 26 65.2 108.5 -1.7 -58.9 1320 F 1 17600 10 05 00 1613+341 13 55 26 61.5 79.9 -2.3 -80.3 122 1 12 17600 10 05 00 10 08 00 --- 13 58 27 62.1 80.1 -2.3 -80.5 180 R 1 15200 10 08 00 ARP220 13 58 27 66.4 110.3 -1.6 -57.9 -60 1 12 15200 10 08 00 10 27 00 --- 14 17 30 70.0 116.9 -1.3 -53.6 1080 R 1 0 10 30 00 ARP220 14 20 30 70.6 118.1 -1.2 -52.8 163 1 13 0 10 30 00 10 52 00 --- 14 42 34 74.4 129.2 -0.9 -44.4 1320 F 1 17600 10 55 00 3C286 14 45 34 73.9 262.2 1.2 72.2 -34 1 13 17600 Stopped 11 05 00 --- 14 55 36 71.9 264.4 1.4 73.0 566 S 1 17600 11 10 00 1613+341 15 00 37 74.9 84.4 -1.2 -85.3 15 1 14 17600 11 10 00 11 13 00 --- 15 03 37 75.5 84.6 -1.2 -85.5 180 R 1 15200 11 13 00 ARP220 15 03 37 77.4 144.9 -0.5 -31.3 -105 1 14 15200 11 13 00 11 32 00 --- 15 22 40 79.1 164.7 -0.2 -13.8 1035 R 1 0 ----------- Tape Change ------------ 11 35 00 ARP220 15 25 41 79.2 168.3 -0.2 -10.6 160 2 1 0 11 35 00 11 57 00 --- 15 47 44 79.1 195.3 0.2 13.8 1320 F 1 17600 12 00 00 ARP220 15 50 45 78.9 198.8 0.3 16.9 160 2 2 17600 12 00 00 12 22 00 --- 16 12 49 76.6 220.3 0.6 35.7 1320 R 1 0 12 25 00 ARP220 16 15 49 76.2 222.6 0.7 37.7 161 2 3 0 12 25 00 12 47 00 --- 16 37 53 72.7 236.4 1.0 48.8 1320 F 1 17600 12 50 00 1613+341 16 40 53 84.4 273.1 0.5 89.3 110 2 4 17600 12 50 00 12 53 00 --- 16 43 54 83.8 273.2 0.5 89.0 180 R 1 15200 12 53 00 ARP220 16 43 54 71.6 239.3 1.1 50.9 -66 2 4 15200 12 53 00 13 12 00 --- 17 02 57 68.1 246.8 1.5 56.1 1074 R 1 0 13 15 00 ARP220 17 05 57 67.5 247.8 1.5 56.8 163 2 5 0 13 15 00 13 37 00 --- 17 28 01 63.2 254.2 1.9 60.3 1320 F 1 17600 Schedule for VLA27 (Code Y ) 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 40 00 ARP220 17 31 01 62.6 254.9 1.9 60.7 163 2 6 17600 13 40 00 14 02 00 --- 17 53 05 58.2 259.8 2.3 62.7 1320 R 1 0 14 05 00 ARP220 17 56 05 57.5 260.4 2.3 62.9 163 2 7 0 14 05 00 14 27 00 --- 18 18 09 53.0 264.3 2.7 64.0 1320 F 1 17600 14 30 00 1613+341 18 21 10 63.8 279.3 2.1 81.2 133 2 8 17600 14 30 00 14 36 00 --- 18 27 11 62.5 279.8 2.2 80.7 360 R 1 12800 14 36 00 ARP220 18 27 11 51.2 265.8 2.9 64.2 -49 2 8 12800 14 36 00 14 52 00 --- 18 43 13 47.8 268.3 3.1 64.5 911 R 1 0 14 55 00 ARP220 18 46 14 47.2 268.7 3.2 64.5 163 2 9 0 14 55 00 15 17 00 --- 19 08 17 42.7 271.8 3.6 64.5 1320 F 1 17600 15 30 00 ARP220 19 21 19 40.0 273.5 3.8 64.3 757 2 10 17600 15 30 00 15 52 00 --- 19 43 23 35.4 276.3 4.1 63.8 1320 R 1 0 16 05 00 1613+341 19 56 25 44.6 286.6 3.7 73.6 738 2 11 0 16 05 00 16 08 00 --- 19 59 26 44.0 286.9 3.8 73.4 180 F 1 2400 16 08 00 ARP220 19 59 26 32.1 278.2 4.4 63.3 -51 2 11 2400 16 08 00 16 27 00 --- 20 18 29 28.2 280.5 4.7 62.6 1089 F 1 17600 16 30 00 ARP220 20 21 29 27.6 280.9 4.8 62.5 163 2 12 17600 16 30 00 16 52 00 --- 20 43 33 23.1 283.5 5.1 61.4 1320 R 1 0 16 55 00 ARP220 20 46 33 22.5 283.9 5.2 61.2 163 2 13 0 16 55 00 17 17 00 --- 21 08 37 18.1 286.5 5.6 60.0 1320 F 1 17600 17 35 00 1613+341 21 26 40 27.1 294.6 5.2 65.6 1038 2 14 17600 17 35 00 17 38 00 --- 21 29 40 26.5 294.9 5.3 65.3 180 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 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 10 Station: VLA27 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= 1010.10 1010.10 1039.90 1039.90 1039.90 1039.90 1039.90 1039.90 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= U U U U U U U U IF = A C B D B D B D The following frequency sets based on this setup were used. Frequency Set: 9 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= 623.89 623.89 602.09 602.09 610.09 610.09 618.09 618.09 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 VLA specific information: (LO and FI cards will be written.) VLABAND: VL VLABW: 0000 FEFILTER: 2020 VLAFEAB: -3.20 VLAFECD: -3.20 VLAIF: SYSLIF VLASYNA: 3810.10 VLASYNB: 3839.90 VLAROT: VLBLROT FLUKEA: 100.00 FLUKEB: 200.00 FLUKESET: 0 Details for VLA IFs: LO Sum Frequency span VLBI FIRSTLO VLA IF A: 1610.1000 1630.8500- 1643.3500 1010.1000 VLA IF B: 1639.9000 1639.9000- 1689.9000 1039.9000 VLA IF C: 1610.1000 1630.8500- 1643.3500 1010.1000 VLA IF D: 1639.9000 1639.9000- 1689.9000 1039.9000 With new digital patch panel, VLA IF = VLB IF. 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