COVER INFORMATION Station: ARECIBO (Code Ar ) 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 ARECIBO (Code Ar ) 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). ---------------------------------------------------------------------------------------- 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: 801.01 801.01 793.01 793.01 785.01 785.01 777.01 777.01 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 07 10 00 1516+193 13 43 25 67.8 83.2 -1.6 D -89.1 0 1 1 0 07 10 00 07 13 00 --- 13 46 26 68.5 83.2 -1.5 D -89.4 0 F 1 2400 07 13 00 ARP220 13 46 26 64.1 73.8 -1.8 D -96.3 -34 1 1 2400 07 13 00 07 32 00 --- 14 05 29 68.5 72.3 -1.5 D -99.6 0 F 1 17600 07 35 00 ARP220 14 08 29 69.1 72.0 -1.4 D -100.2 169 1 2 17600 07 35 00 07 57 00 --- 14 30 33 74.1 68.4 -1.1 -105.8 0 R 1 0 08 00 00 ARP220 14 33 33 74.7 67.7 -1.0 -106.8 155 1 3 0 08 00 00 08 22 00 --- 14 55 37 79.4 59.2 -0.7 -117.2 1320 F 1 17600 08 25 00 ARP220 14 58 37 80.0 57.4 -0.6 -119.3 157 1 4 17600 08 25 00 08 47 00 --- 15 20 41 83.8 32.8 -0.2 -145.9 1320 R 1 0 08 50 00 1516+193 15 23 41 88.1 307.5 0.1 127.0 -491 1 5 0 08 50 00 09 00 00 --- 15 33 43 85.9 287.3 0.3 106.0 109 F 1 8000 09 00 00 ARP220 15 33 43 84.9 363.7 0.0 -176.1 -195 1 5 8000 09 00 00 09 12 00 --- 15 45 45 84.3 334.8 0.2 153.9 525 F 1 17600 09 15 00 ARP220 15 48 46 84.0 328.9 0.2 147.7 155 1 6 17600 09 15 00 09 37 00 --- 16 10 49 80.2 303.2 0.6 120.0 1320 R 1 0 09 40 00 ARP220 16 13 50 79.6 301.3 0.6 117.9 157 1 7 0 09 40 00 10 02 00 --- 16 35 53 74.9 292.5 1.0 107.1 1320 F 1 17600 10 05 00 1613+341 16 38 54 73.2 341.8 0.4 159.0 50 1 8 17600 10 05 00 10 08 00 --- 16 41 54 73.0 339.9 0.5 156.7 180 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 arlbw4 in /usr/local/vlbi_sched/catalogs/freq.dat RX=LBW, with lfbf=4, TG 07-Oct-01 Setup group: 9 Station: ARECIBO Total bit rate: 256 Format: MKIV1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 270.000 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 2435.00 2435.00 2435.00 2435.00 2435.00 2435.00 2435.00 2435.00 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 The following frequency sets based on this setup were used. Frequency Set: 10 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= 801.01 801.01 793.01 793.01 785.01 785.01 777.01 777.01 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_off 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