COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: Monitoring the magnetic field on the water masers of U Ori Exp. Code: BV055c Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Wouter Vlemmings Address: Univ. of Manchester, Jodrell Bank Obs. Macclesfield Cheshire SK11 9DL U.K. Phone: +1 EMAIL: wouter@astro.cornell.edu Fax: +1 Phone during observation: Observing mode: VLBA Notes: Make sure Pulse CAl is Off Schedule for VLBA_FD (Code Fd ) Page 2 Monitoring the magnetic field on the water masers of U Ori 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) ---------------------------------------------------------------------------------------- --- Sun 23 Jan 2005 Day 23 --- Next scan frequencies: 22235.02 22235.02 22235.83 22235.83 Next BBC frequencies: 735.02 735.02 735.83 735.83 Next scan bandwidths: 1.00 1.00 1.00 1.00 02 04 25 3C454.3 03 18 42 28.4 -87.3 4.4 63.5 0 1 1 0 02 04 25 02 13 24 --- 03 27 42 26.5 -86.2 4.6 63.4 538 F 1 1794 02 15 24 DA193 03 29 42 59.0 62.7 -2.4 -95.7 15 1 1 1794 02 15 24 02 24 22 --- 03 38 42 60.7 62.3 -2.3 -97.5 538 F 1 3588 02 26 22 UORI 03 40 42 57.8 100.9 -2.3 -64.2 88 1 1 3588 02 26 22 02 57 16 --- 04 11 42 64.3 107.8 -1.7 -60.8 1855 F 1 9770 02 59 16 DA193 04 13 42 67.3 59.2 -1.7 -105.9 82 1 1 9770 02 59 16 03 08 15 --- 04 22 42 69.0 57.8 -1.6 -108.6 538 F 1 11564 03 10 15 UORI 04 24 42 66.9 111.5 -1.5 -58.5 78 1 2 11564 03 10 15 03 41 09 --- 04 55 42 72.8 124.0 -1.0 -49.5 1855 R 1 17454 03 43 09 DA193 04 57 42 75.0 48.3 -1.0 -123.3 64 1 2 17454 03 43 09 03 52 07 --- 05 06 42 76.4 44.1 -0.8 -128.7 538 R 1 15660 03 54 07 UORI 05 08 42 75.1 131.6 -0.8 -43.3 56 1 2 15660 03 54 07 04 25 02 --- 05 39 42 78.9 159.5 -0.3 -18.7 1855 R 1 9478 04 27 02 DA193 05 41 42 80.4 16.5 -0.2 -161.4 19 1 2 9478 04 27 02 04 36 00 --- 05 50 42 80.8 6.2 -0.1 -173.0 538 R 1 7684 04 38 00 UORI 05 52 42 79.5 175.6 -0.1 -4.1 1 1 2 7684 04 38 00 05 08 55 --- 06 23 42 77.8 212.3 0.5 29.3 1855 R 1 1502 05 10 55 DA193 06 25 42 79.0 328.5 0.5 144.2 37 1 1 1502 05 10 55 05 19 53 --- 06 34 42 77.9 321.9 0.6 136.3 538 F 2 292 05 21 53 UORI 06 36 42 76.1 223.5 0.7 39.1 48 1 1 292 05 21 53 05 52 48 --- 07 07 42 70.8 241.2 1.2 53.5 1855 F 2 6474 05 54 48 DA193 07 09 42 72.4 306.5 1.2 115.7 71 1 1 6474 05 54 48 06 03 46 --- 07 18 42 70.8 304.2 1.4 112.2 538 F 2 8268 06 05 46 UORI 07 20 42 68.3 246.2 1.4 57.0 75 1 1 8268 06 05 46 06 36 40 --- 07 51 42 62.0 254.9 1.9 62.3 1855 F 2 14450 Schedule for VLBA_FD (Code Fd ) Page 3 Monitoring the magnetic field on the water masers of U Ori 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) ---------------------------------------------------------------------------------------- --- Sun 23 Jan 2005 Day 23 --- 06 38 40 DA193 07 53 42 64.4 299.1 2.0 101.8 85 1 1 14450 06 38 40 06 47 38 --- 08 02 42 62.7 298.4 2.1 99.7 538 F 2 16244 06 49 38 UORI 08 04 42 59.3 257.8 2.1 63.6 87 1 2 16244 06 49 38 07 20 33 --- 08 35 42 52.7 263.3 2.7 65.6 1855 R 2 12774 07 22 33 DA193 08 37 42 56.0 296.9 2.7 92.9 92 1 2 12774 07 22 33 07 31 31 --- 08 46 42 54.3 296.8 2.8 91.3 538 R 2 10980 07 33 31 UORI 08 48 42 49.9 265.4 2.9 66.0 93 1 2 10980 07 33 31 08 04 26 --- 09 19 42 43.3 269.6 3.4 66.4 1855 R 2 4798 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bv055.set Matches group v1cm_b3 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 16 Format: VLBA1:1 Bits per sample: 2 Sample rate: 2.000 Number of channels: 4 Passes/head pos: 4 Speedup factor: 4.00 Tape speeds: Low density - 66.665 ips, High density - 40.00 ips Time per pass for 17600 ft, High density tapes is: 01:28:00 1st LO= 21500.00 21500.00 21500.00 21500.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = B D B D VLBA FE= omit 1cm omit 1cm VLBA Synth= 9.1 15.4 12.4 The following frequency sets based on this setup were used. Frequency Set: 1 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 22235.02 22235.02 22235.83 22235.83 BBC fr= 735.02 735.02 735.83 735.83 Bandwd= 1.000 1.000 1.000 1.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 6, 10, 14 track2= 18, 22, 26, 30 track3= 3, 7, 11, 15 track4= 19, 23, 27, 31 barrel=roll_auto SOURCE LIST -- Monitoring the magnetic field on the water masers of U Ori 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) * UORI 05 52 50.891256 * 05 55 49.168900 05 56 07.993113 20 10 05.91118 * 20 10 30.68700 20 10 39.69500 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: -35.50 -35.50 -46.50 -46.50 J0555+3948 05 52 01.407166 * 05 55 30.805609 05 55 52.970518 0552+398 39 48 21.94585 * 39 48 49.16500 39 49 02.21565 * DA193 /home/filehost/cwalker/sched/catalogs/sources.vlba J0555+39 ICRF - Ext.1 Source - 1998 IERS Annual Report Doppler based on other sources. J2253+1608 22 51 29.519733 * 22 53 57.747932 22 54 11.204414 2251+158 15 52 54.34806 * 16 08 53.56089 16 10 25.75525 * 3C454.3 /home/filehost/cwalker/sched/catalogs/sources.vlba J2253+16 ICRF - Ext.1 Source - 1998 IERS Annual Report Doppler based on other sources. 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) UORI 145.7 DA193 142.6 3C454.3 51.6 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