COVER INFORMATION Station: VLBA_OV (Code Ov ) 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_OV (Code Ov ) 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 07 10 00 1516+193 10 17 19 23.4 82.6 -5.0 -56.9 0 1 1 0 07 10 00 07 13 00 --- 10 20 20 24.0 83.0 -4.9 -57.0 180 F 1 2400 07 13 00 ARP220 10 20 20 22.6 76.9 -5.2 -57.7 -10 1 1 2400 07 13 00 07 32 00 --- 10 39 23 26.3 79.5 -4.9 -58.6 1130 F 1 17600 07 35 00 ARP220 10 42 23 26.9 79.9 -4.9 -58.7 173 1 2 17600 07 35 00 07 57 00 --- 11 04 27 31.2 82.8 -4.5 -59.5 1320 R 1 0 08 00 00 ARP220 11 07 27 31.8 83.3 -4.5 -59.5 173 1 3 0 08 00 00 08 22 00 --- 11 29 31 36.2 86.3 -4.1 -60.0 1320 F 1 17600 08 25 00 ARP220 11 32 31 36.8 86.8 -4.0 -60.1 173 1 4 17600 08 25 00 08 47 00 --- 11 54 35 41.2 90.0 -3.7 -60.2 1320 R 1 0 08 50 00 1516+193 11 57 36 43.3 98.0 -3.3 -56.8 169 1 5 0 08 50 00 09 00 00 --- 12 07 37 45.2 99.8 -3.2 -56.3 600 F 1 8000 09 00 00 ARP220 12 07 37 43.8 92.0 -3.5 -60.2 -11 1 5 8000 09 00 00 09 12 00 --- 12 19 39 46.2 93.9 -3.3 -60.0 709 F 1 17600 09 15 00 ARP220 12 22 40 46.8 94.4 -3.2 -59.9 173 1 6 17600 09 15 00 09 37 00 --- 12 44 43 51.1 98.4 -2.8 -59.2 1320 R 1 0 09 40 00 ARP220 12 47 44 51.7 98.9 -2.8 -59.0 173 1 7 0 09 40 00 10 02 00 --- 13 09 47 56.0 103.4 -2.4 -57.6 1320 F 1 17600 10 05 00 1613+341 13 12 48 53.5 80.8 -3.0 -71.8 159 1 8 17600 10 05 00 10 08 00 --- 13 15 48 54.1 81.1 -3.0 -72.0 180 R 1 15200 10 08 00 ARP220 13 15 48 57.2 104.8 -2.3 -57.1 -22 1 8 15200 10 08 00 10 27 00 --- 13 34 52 60.8 109.5 -2.0 -54.9 1118 R 1 0 10 30 00 ARP220 13 37 52 61.4 110.3 -2.0 -54.5 173 1 9 0 10 30 00 10 52 00 --- 13 59 56 65.4 117.2 -1.6 -50.5 1320 F 1 17600 Schedule for VLBA_OV (Code Ov ) 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 --- 11 10 00 1613+341 14 17 59 66.4 88.6 -1.9 -74.2 1055 1 10 17600 11 10 00 11 13 00 --- 14 20 59 67.0 89.0 -1.9 -74.2 180 R 1 15200 11 13 00 ARP220 14 20 59 69.0 125.6 -1.2 -44.9 -30 1 10 15200 11 13 00 11 32 00 --- 14 40 02 71.9 135.4 -0.9 -37.5 1110 R 1 0 11 35 00 ARP220 14 43 03 72.3 137.2 -0.9 -36.1 173 1 11 0 11 35 00 11 57 00 --- 15 05 06 74.8 152.7 -0.5 -23.4 1320 F 1 17600 12 00 00 ARP220 15 08 07 75.1 155.2 -0.5 -21.4 172 1 12 17600 12 00 00 12 22 00 --- 15 30 10 76.2 175.2 -0.1 -4.2 1320 R 1 0 12 25 00 ARP220 15 33 11 76.2 178.1 0.0 -1.7 172 1 13 0 12 25 00 12 47 00 --- 15 55 15 75.6 198.8 0.3 16.2 1320 F 1 17600 12 50 00 1613+341 15 58 15 85.6 132.6 -0.3 -45.1 130 1 14 17600 12 50 00 12 53 00 --- 16 01 16 86.0 138.9 -0.2 -39.2 180 R 1 15200 12 53 00 ARP220 16 01 16 75.2 204.0 0.4 20.7 -49 1 14 15200 12 53 00 13 12 00 --- 16 20 19 73.2 218.3 0.8 32.6 1091 R 1 0 ----------- Tape Change ------------ 13 15 00 ARP220 16 23 19 72.8 220.3 0.8 34.2 173 2 1 0 13 15 00 13 37 00 --- 16 45 23 69.6 232.5 1.2 43.6 1320 F 1 17600 13 40 00 ARP220 16 48 23 69.1 233.9 1.2 44.6 173 2 2 17600 13 40 00 14 02 00 --- 17 10 27 65.4 242.8 1.6 50.5 1320 R 1 0 14 05 00 ARP220 17 13 27 64.9 243.8 1.6 51.2 173 2 3 0 14 05 00 14 27 00 --- 17 35 31 60.8 250.5 2.0 54.9 1320 F 1 17600 14 30 00 1613+341 17 38 31 72.6 266.3 1.4 73.9 150 2 4 17600 14 30 00 14 36 00 --- 17 44 32 71.4 267.4 1.5 74.1 360 R 1 12800 14 36 00 ARP220 17 44 32 59.1 252.8 2.2 56.0 -31 2 4 12800 14 36 00 14 52 00 --- 18 00 35 56.0 256.6 2.4 57.6 929 R 1 0 14 55 00 ARP220 18 03 36 55.4 257.2 2.5 57.8 173 2 5 0 14 55 00 15 17 00 --- 18 25 39 51.1 261.7 2.8 59.2 1320 F 1 17600 15 30 00 ARP220 18 38 41 48.5 264.0 3.1 59.7 769 2 6 17600 15 30 00 15 52 00 --- 19 00 45 44.2 267.7 3.4 60.2 1320 R 1 0 Schedule for VLBA_OV (Code Ov ) 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 --- 16 05 00 1613+341 19 13 47 53.7 279.1 3.0 71.9 755 2 7 0 16 05 00 16 08 00 --- 19 16 48 53.1 279.4 3.0 71.7 180 F 1 2400 16 08 00 ARP220 19 16 48 41.0 270.2 3.7 60.2 -30 2 7 2400 16 08 00 16 27 00 --- 19 35 51 37.2 273.0 4.0 60.1 1110 F 1 17600 16 30 00 ARP220 19 38 51 36.6 273.4 4.1 60.1 173 2 8 17600 16 30 00 16 52 00 --- 20 00 55 32.2 276.5 4.4 59.6 1320 R 1 0 16 55 00 ARP220 20 03 55 31.6 276.9 4.5 59.5 173 2 9 0 16 55 00 17 17 00 --- 20 25 59 27.3 279.9 4.8 58.8 1320 F 1 17600 17 35 00 1613+341 20 44 02 36.3 288.5 4.5 65.9 1056 2 10 17600 17 35 00 17 38 00 --- 20 47 02 35.7 288.8 4.6 65.6 180 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