COVER INFORMATION Station: VLA27 (Code Y ) Experiment: GD018 Exp. Code: GD018 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: Phase-referencing of a source at 21cm (256 Mb/s) Notes: P Schedule for VLA27 (Code Y ) Page 2 GD018 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) ---------------------------------------------------------------------------------------- --- Fri 4 Mar 2005 Day 63 --- Next scan frequencies: 1400.10 1400.10 1408.10 1408.10 1416.10 1416.10 1424.10 1424.10 Next BBC frequencies: 610.20 610.20 618.20 618.20 626.20 626.20 634.20 634.20 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 16 09 00 3C286 19 48 36 13.3 -62.0 6.3 58.1 0 1 1 0 Stopped 16 15 00 --- 19 54 37 12.2 -61.3 6.4 57.5 360 S 1 0 16 17 00 0234+285 19 56 37 8.0 60.5 -6.7 -55.4 -78 1 1 0 16 17 00 16 28 00 --- 20 07 39 10.0 61.9 -6.5 -56.5 582 F 1 8800 16 29 00 IRAS02524 20 08 39 2.5 66.2 -6.8 D -54.3 38 1 1 8800 16 29 00 16 36 00 --- 20 15 41 3.8 67.1 -6.7 D -54.8 0 F 1 14400 16 36 00 J0257+1847 20 15 41 2.1 68.6 -6.7 D -54.6 -17 1 1 14400 16 36 00 16 40 00 =0254+185 20 19 41 2.9 69.2 -6.6 D -54.9 0 F 1 17600 16 41 00 IRAS02524 20 20 41 4.8 67.8 -6.6 D -55.2 43 1 2 17600 16 41 00 16 48 00 --- 20 27 43 6.1 68.8 -6.5 D -55.8 0 R 1 12000 16 48 00 J0257+1847 20 27 43 4.4 70.2 -6.5 D -55.4 -17 1 2 12000 16 48 00 16 52 00 =0254+185 20 31 43 5.2 70.8 -6.4 D -55.7 0 R 1 8800 16 53 00 IRAS02524 20 32 43 7.1 69.4 -6.4 D -56.2 43 1 2 8800 16 53 00 17 00 00 --- 20 39 45 8.5 70.3 -6.3 -56.7 0 R 1 3200 17 00 00 J0257+1847 20 39 45 6.8 71.9 -6.3 D -56.2 -17 1 2 3200 17 00 00 17 04 00 =0254+185 20 43 45 7.6 72.4 -6.2 D -56.5 0 R 1 0 17 06 00 0234+285 20 45 46 17.1 66.4 -5.9 -60.0 78 1 3 0 17 06 00 17 17 00 --- 20 56 47 19.2 67.6 -5.7 -61.0 660 F 1 8800 17 18 00 IRAS02524 20 57 47 12.0 72.6 -6.0 -57.9 23 1 3 8800 17 18 00 17 25 00 --- 21 04 49 13.4 73.5 -5.8 -58.3 420 F 1 14400 17 25 00 J0257+1847 21 04 49 11.8 75.1 -5.9 -57.7 -20 1 3 14400 17 25 00 17 29 00 =0254+185 21 08 49 12.6 75.6 -5.8 -58.0 220 F 1 17600 17 30 00 IRAS02524 21 09 49 14.4 74.2 -5.8 -58.6 39 1 4 17600 17 30 00 17 37 00 --- 21 16 51 15.8 75.0 -5.6 -59.0 420 R 1 12000 Schedule for VLA27 (Code Y ) Page 3 GD018 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) ---------------------------------------------------------------------------------------- --- Fri 4 Mar 2005 Day 63 --- 17 37 00 J0257+1847 21 16 51 14.2 76.7 -5.7 -58.4 -20 1 4 12000 17 37 00 17 41 00 =0254+185 21 20 51 15.0 77.2 -5.6 -58.6 220 R 1 8800 17 43 00 0234+285 21 22 52 24.3 70.5 -5.3 -63.0 77 1 4 8800 17 43 00 17 54 00 --- 21 33 53 26.4 71.7 -5.1 -63.8 660 R 1 0 17 55 00 IRAS02524 21 34 54 19.4 77.3 -5.3 -59.9 24 1 5 0 17 55 00 18 02 00 --- 21 41 55 20.9 78.2 -5.2 -60.3 420 F 1 5600 18 02 00 J0257+1847 21 41 55 19.3 79.9 -5.3 -59.5 -20 1 5 5600 18 02 00 18 06 00 =0254+185 21 45 55 20.1 80.4 -5.2 -59.6 220 F 1 8800 18 07 00 IRAS02524 21 46 56 21.9 78.8 -5.1 -60.5 40 1 5 8800 18 07 00 18 14 00 --- 21 53 57 23.3 79.6 -5.0 -60.8 420 F 1 14400 18 14 00 J0257+1847 21 53 57 21.7 81.4 -5.1 -59.9 -20 1 5 14400 18 14 00 18 18 00 =0254+185 21 57 57 22.5 81.9 -5.0 -60.0 220 F 1 17600 18 19 00 IRAS02524 21 58 57 24.3 80.3 -4.9 -61.0 40 1 6 17600 18 19 00 18 26 00 --- 22 05 59 25.8 81.1 -4.8 -61.2 420 R 1 12000 18 26 00 J0257+1847 22 05 59 24.2 82.9 -4.9 -60.3 -20 1 6 12000 18 26 00 18 30 00 =0254+185 22 09 59 25.0 83.5 -4.8 -60.4 220 R 1 8800 18 32 00 0234+285 22 12 00 34.0 75.8 -4.4 -66.4 78 1 6 8800 18 32 00 18 43 00 --- 22 23 01 36.2 76.9 -4.3 -67.1 660 R 1 0 18 43 00 IRAS02524 22 23 01 29.3 83.3 -4.5 -61.8 -36 1 7 0 18 43 00 18 50 00 --- 22 30 03 30.7 84.2 -4.4 -62.0 384 F 1 5600 18 50 00 J0257+1847 22 30 03 29.1 86.1 -4.5 -60.8 -20 1 7 5600 18 50 00 18 54 00 =0254+185 22 34 03 30.0 86.6 -4.4 -60.9 220 F 1 8800 19 09 00 0234+285 22 49 06 41.5 79.7 -3.8 -68.5 850 1 7 8800 19 09 00 19 20 00 --- 23 00 08 43.7 80.9 -3.6 -69.0 660 F 1 17600 19 21 00 IRAS02524 23 01 08 37.1 88.2 -3.9 -62.5 25 1 8 17600 19 21 00 19 28 00 --- 23 08 09 38.6 89.2 -3.8 -62.5 420 R 1 12000 19 28 00 J0257+1847 23 08 09 37.0 91.3 -3.8 -61.0 -20 1 8 12000 19 28 00 19 32 00 =0254+185 23 12 09 37.9 91.9 -3.8 -61.0 220 R 1 8800 19 33 00 IRAS02524 23 13 10 39.6 89.9 -3.7 -62.5 40 1 8 8800 19 33 00 19 40 00 --- 23 20 11 41.1 90.9 -3.6 -62.5 420 R 1 3200 Schedule for VLA27 (Code Y ) Page 4 GD018 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) ---------------------------------------------------------------------------------------- --- Fri 4 Mar 2005 Day 63 --- 19 40 00 J0257+1847 23 20 11 39.5 93.1 -3.6 -60.9 -20 1 8 3200 19 40 00 19 44 00 =0254+185 23 24 11 40.3 93.7 -3.6 -60.8 220 R 1 0 19 45 00 IRAS02524 23 25 12 42.1 91.6 -3.5 -62.5 40 1 9 0 19 45 00 19 52 00 --- 23 32 13 43.6 92.6 -3.4 -62.4 420 F 1 5600 19 52 00 J0257+1847 23 32 13 42.0 94.9 -3.4 -60.7 -20 1 9 5600 19 52 00 19 56 00 =0254+185 23 36 13 42.8 95.5 -3.4 -60.6 220 F 1 8800 19 58 00 0234+285 23 38 14 51.6 85.2 -3.0 -70.4 79 1 9 8800 19 58 00 20 09 00 --- 23 49 16 53.9 86.5 -2.8 -70.7 660 F 1 17600 20 10 00 IRAS02524 23 50 16 47.3 95.4 -3.1 -62.0 25 1 10 17600 20 10 00 20 17 00 --- 23 57 17 48.7 96.6 -3.0 -61.8 420 R 1 12000 20 17 00 J0257+1847 23 57 17 47.2 99.0 -3.0 -59.8 -20 1 10 12000 20 17 00 20 21 00 =0254+185 00 01 18 48.0 99.7 -2.9 -59.6 220 R 1 8800 20 22 00 IRAS02524 00 02 18 49.8 97.4 -2.9 -61.6 40 1 10 8800 20 22 00 20 29 00 --- 00 09 19 51.2 98.7 -2.8 -61.3 420 R 1 3200 20 29 00 J0257+1847 00 09 19 49.6 101.2 -2.8 -59.1 -20 1 10 3200 20 29 00 20 33 00 =0254+185 00 13 20 50.4 102.0 -2.7 -58.9 220 R 1 0 20 34 00 IRAS02524 00 14 20 52.2 99.6 -2.7 -61.0 40 1 11 0 20 34 00 20 41 00 --- 00 21 21 53.7 100.9 -2.6 -60.6 420 F 1 5600 20 41 00 J0257+1847 00 21 21 52.0 103.6 -2.6 -58.3 -20 1 11 5600 20 41 00 20 45 00 =0254+185 00 25 21 52.8 104.4 -2.5 -57.9 220 F 1 8800 20 47 00 0234+285 00 27 22 61.7 91.7 -2.2 -70.9 78 1 11 8800 20 47 00 20 58 00 --- 00 38 24 64.0 93.4 -2.0 -70.7 660 F 1 17600 20 59 00 IRAS02524 00 39 24 57.3 104.6 -2.3 -59.1 25 1 12 17600 20 59 00 21 06 00 --- 00 46 25 58.7 106.2 -2.2 -58.4 420 R 1 12000 21 06 00 J0257+1847 00 46 25 57.0 109.1 -2.2 -55.8 -20 1 12 12000 21 06 00 21 10 00 =0254+185 00 50 26 57.8 110.1 -2.1 -55.2 220 R 1 8800 21 11 00 IRAS02524 00 51 26 59.7 107.5 -2.1 -57.8 39 1 12 8800 21 11 00 21 18 00 --- 00 58 27 61.1 109.2 -2.0 -56.9 420 R 1 3200 21 18 00 J0257+1847 00 58 27 59.4 112.2 -2.0 -54.1 -20 1 12 3200 21 18 00 21 22 00 =0254+185 01 02 28 60.1 113.3 -1.9 -53.5 220 R 1 0 Schedule for VLA27 (Code Y ) Page 5 GD018 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) ---------------------------------------------------------------------------------------- --- Fri 4 Mar 2005 Day 63 --- 21 23 00 IRAS02524 01 03 28 62.1 110.6 -1.9 -56.1 39 1 13 0 21 23 00 21 30 00 --- 01 10 29 63.4 112.6 -1.8 -55.0 420 F 1 5600 21 30 00 J0257+1847 01 10 29 61.6 115.7 -1.8 -52.0 -20 1 13 5600 21 30 00 21 34 00 =0254+185 01 14 30 62.4 117.0 -1.7 -51.3 220 F 1 8800 21 36 00 0234+285 01 16 30 71.8 101.2 -1.4 -68.0 77 1 13 8800 21 36 00 21 47 00 --- 01 27 32 74.1 104.4 -1.2 -66.3 660 F 1 17600 21 48 00 IRAS02524 01 28 32 66.8 118.6 -1.5 -51.1 23 1 14 17600 21 48 00 21 55 00 --- 01 35 33 68.0 121.4 -1.3 -49.2 420 R 1 12000 21 55 00 J0257+1847 01 35 33 66.1 124.5 -1.4 -46.1 -21 1 14 12000 21 55 00 21 59 00 =0254+185 01 39 34 66.8 126.2 -1.3 -44.9 219 R 1 8800 22 01 00 0234+285 01 41 34 76.9 109.7 -0.9 -62.9 75 1 14 8800 22 01 00 22 12 00 --- 01 52 36 79.0 115.3 -0.8 -58.7 660 R 1 0 ----------- Tape Change ------------ 22 13 00 IRAS02524 01 53 36 71.1 129.7 -1.0 -43.0 21 2 1 0 22 13 00 22 20 00 --- 02 00 37 72.2 133.6 -0.9 -40.0 420 F 1 5600 22 20 00 J0257+1847 02 00 37 70.1 136.4 -1.0 -37.1 -21 2 1 5600 22 20 00 22 24 00 =0254+185 02 04 38 70.6 138.7 -0.9 -35.2 219 F 1 8800 22 25 00 IRAS02524 02 05 38 72.9 136.7 -0.8 -37.5 38 2 1 8800 22 25 00 22 32 00 --- 02 12 39 73.9 141.3 -0.7 -33.7 420 F 1 14400 22 32 00 J0257+1847 02 12 39 71.7 143.7 -0.8 -31.2 -22 2 1 14400 22 32 00 22 36 00 =0254+185 02 16 40 72.2 146.3 -0.7 -29.0 218 F 1 17600 22 37 00 IRAS02524 02 17 40 74.5 145.0 -0.6 -30.6 38 2 2 17600 22 37 00 22 44 00 --- 02 24 41 75.3 150.5 -0.5 -25.9 420 R 1 12000 22 44 00 J0257+1847 02 24 41 73.0 152.0 -0.6 -24.3 -22 2 2 12000 22 44 00 22 48 00 =0254+185 02 28 42 73.4 155.0 -0.5 -21.7 218 R 1 8800 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: gd018.set Matches group y_01389.9j in /usr/local/vlbi_sched/catalogs/freq.dat In VA mode, only IFs A and D are phased. Setup group: 11 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= 789.90 789.90 789.90 789.90 789.90 789.90 789.90 789.90 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 D A D A D A D The following frequency sets based on this setup were used. Frequency Set: 9 Setup file default. Used pcal sets: 1 LO sum= 1400.10 1400.10 1408.10 1408.10 1416.10 1416.10 1424.10 1424.10 BBC fr= 610.20 610.20 618.20 618.20 626.20 626.20 634.20 634.20 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 = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off VLA specific information: (LO and FI cards will be written.) VLABAND: VL VLABW: 0000 FEFILTER: 0000 VLAFEAB: -3.20 VLAFECD: -3.20 VLAIF: SYSLIF VLASYNA: 3589.90 VLASYNB: 3589.90 VLAROT: VLBLROT FLUKEA: 100.00 FLUKEB: 200.00 FLUKESET: 0 Details for VLA IFs: LO Sum Frequency span VLBI FIRSTLO VLA IF A: 1389.9000 1389.9000- 1439.9000 789.9000 VLA IF B: 1389.9000 1389.9000- 1439.9000 789.9000 VLA IF C: 1389.9000 1389.9000- 1439.9000 789.9000 VLA IF D: 1389.9000 1389.9000- 1439.9000 789.9000 With new digital patch panel, VLA IF = VLB IF. SOURCE LIST -- GD018 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) * IRAS02524 02 52 25.818883 * 02 55 17.104000 02 55 33.612154 20 46 49.93596 * 20 58 57.21000 21 00 14.83367 From catalog imbedded in main SCHED input file. 5.133 scan hours, 159.208 baseline hours above horizon. * 0234+285 02 34 55.589614 * 02 37 52.405700 02 38 09.257920 28 35 11.40675 * 28 48 08.98900 28 49 33.42288 From catalog imbedded in main SCHED input file. 3.117 scan hours, 103.342 baseline hours above horizon. * 3C84 03 16 29.567669 * 03 19 48.160500 03 20 07.287714 41 19 51.91590 * 41 30 42.10300 41 31 59.62536 From catalog imbedded in main SCHED input file. 0.183 scan hours, 3.850 baseline hours above horizon. * 3C286 13 28 49.657708 * 13 31 08.288000 13 31 23.683592 30 45 58.64136 * 30 30 32.96000 30 28 43.24878 From catalog imbedded in main SCHED input file. 0.000 scan hours, 0.000 baseline hours above horizon. * J0257+1847 02 54 56.156729 * 02 57 45.628773 02 58 01.993214 0254+185 18 35 05.60480 * 18 47 05.35615 18 48 21.60433 /usr/local/vlbi_sched/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 2.933 scan hours, 80.627 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) IRAS02524 63.5 0234+285 62.7 3C84 75.7 3C286 137.3 J0257+1847 63.3 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