COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: Monitoring the magnetic field on the water masers of U Ori Exp. Code: BV055d Schedule Version: 1.00 Processed by SCHED version: 6.01 Release: Late March 2005 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: +1 Observing mode: VLBA Notes: Make sure Pulse CAl is Off Schedule for VLBA_MK (Code Mk ) 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 3 Apr 2005 Day 93 --- Next scan frequencies: 22234.13 22234.13 22234.94 22234.94 Next BBC frequencies: 734.13 734.13 734.94 734.94 Next scan bandwidths: 1.00 1.00 1.00 1.00 21 25 16 3C454.3 23 52 40 75.6 257.7 1.0 73.2 0 1 1 0 21 25 16 21 34 14 --- 00 01 39 73.6 260.0 1.1 74.7 538 F 1 1794 21 36 14 DA193 00 03 40 14.0 412.3 -5.9 -75.7 -5 1 1 1794 21 36 14 21 45 12 --- 00 12 39 15.7 412.7 -5.7 -77.0 533 F 1 3588 21 47 12 UORI 00 14 40 10.8 432.3 -5.7 -72.7 101 1 1 3588 21 47 12 22 18 07 --- 00 45 39 17.8 434.4 -5.2 -74.9 1855 F 1 9770 22 20 07 DA193 00 47 40 22.3 414.0 -5.1 -82.2 100 1 1 9770 22 20 07 22 29 05 --- 00 56 39 24.0 414.2 -5.0 -83.6 538 F 1 11564 22 31 05 UORI 00 58 40 20.8 435.2 -5.0 -75.7 100 1 2 11564 22 31 05 23 02 00 --- 01 29 39 27.9 437.0 -4.4 -77.6 1855 R 1 17454 23 04 00 DA193 01 31 40 30.7 414.7 -4.4 -89.0 99 1 2 17454 23 04 00 23 12 58 --- 01 40 39 32.4 414.7 -4.3 -90.4 538 R 1 15660 23 14 58 UORI 01 42 40 30.8 437.8 -4.2 -78.4 99 1 2 15660 23 14 58 23 45 52 --- 02 13 39 38.0 439.4 -3.7 -80.2 1855 R 1 9478 23 47 52 DA193 02 15 40 39.1 414.2 -3.7 -96.3 97 1 2 9478 23 47 52 23 56 51 --- 02 24 39 40.8 414.0 -3.5 -97.9 538 R 1 7684 --- Start: Sun 3 Apr 2005 Day 93 -- Stop: Mon 4 Apr 2005 Day 94 --- 23 58 51 UORI 02 26 40 41.0 440.1 -3.5 -80.9 97 1 2 7684 23 58 51 00 29 45 --- 02 57 39 48.2 441.5 -3.0 -82.5 1855 R 1 1502 00 31 45 DA193 02 59 40 47.4 412.1 -2.9 -104.8 94 1 1 1502 00 31 45 00 40 43 --- 03 08 39 49.1 411.4 -2.8 -106.8 538 F 2 292 00 42 43 UORI 03 10 40 51.2 442.1 -2.8 -83.2 94 1 1 292 00 42 43 01 13 38 --- 03 41 39 58.5 443.4 -2.2 -84.8 1855 F 2 6474 01 15 38 DA193 03 43 40 55.4 407.5 -2.2 -115.5 90 1 1 6474 01 15 38 01 24 36 --- 03 52 39 56.9 406.1 -2.1 -118.1 538 F 2 8268 Schedule for VLBA_MK (Code Mk ) 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) ---------------------------------------------------------------------------------------- --- Mon 4 Apr 2005 Day 94 --- 01 26 36 UORI 03 54 40 61.5 444.0 -2.0 -85.4 89 1 1 8268 01 26 36 01 57 31 --- 04 25 39 68.8 445.1 -1.5 -87.1 1855 F 2 14450 01 59 31 DA193 04 27 40 62.5 398.6 -1.5 -130.2 83 1 1 14450 01 59 31 02 08 29 --- 04 36 39 63.7 396.0 -1.3 -133.9 538 F 2 16244 02 10 29 UORI 04 38 40 71.8 445.5 -1.3 -87.8 81 1 2 16244 02 10 29 02 41 24 --- 05 09 39 79.1 446.0 -0.8 -90.0 1855 R 2 12774 02 43 24 DA193 05 11 40 67.8 383.0 -0.7 -151.4 72 1 2 12774 02 43 24 02 52 22 --- 05 20 39 68.6 378.8 -0.6 -156.8 538 R 2 10980 02 54 22 UORI 05 22 40 82.1 445.8 -0.6 -91.3 69 1 2 10980 02 54 22 03 25 16 --- 05 53 39 89.3 416.8 0.0 -122.9 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: 10 Station: VLBA_MK 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: 9 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 22234.13 22234.13 22234.94 22234.94 BBC fr= 734.13 734.13 734.94 734.94 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) Error (B1950) (J2000) (Date) (mas) * UORI 05 52 50.891256 * 05 55 49.168900 05 56 07.061105 0.00 20 10 05.91118 * 20 10 30.68700 20 10 40.17695 0.00 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 4.121 scan hours, 184.535 baseline hours above horizon. J0555+3948 05 52 01.407172 * 05 55 30.805614 05 55 51.799443 0.26 0552+398 39 48 21.94585 * 39 48 49.16500 39 49 05.50981 0.40 * DA193 /home/filehost/cwalker/sched/catalogs/sources.vlba J0555+39 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro Doppler based on other sources. 1.196 scan hours, 53.677 baseline hours above horizon. J2253+1608 22 51 29.519743 * 22 53 57.747942 22 54 11.633296 0.31 2251+158 15 52 54.34803 * 16 08 53.56086 16 10 19.11805 0.20 * 3C454.3 /home/filehost/cwalker/sched/catalogs/sources.vlba J2253+16 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro Doppler based on other sources. 0.149 scan hours, 4.186 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) UORI 74.8 DA193 75.5 3C454.3 30.9 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