COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: Water masers in OH12.8-0.9 Exp. Code: BM232c Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Kevin Marvel Address: American Astronomical Society 2000 Florida Avenue, NW, #400 Washington, DC 20009-1231, USA Phone: 202-328-2010 EMAIL: marvel@aas.org Fax: 202-234-2560 Phone during observation: 202-328-2010 Observing mode: Notes: Pulse cal OFF at all stations. Schedule for VLBA_FD (Code Fd ) Page 2 Water masers in OH12.8-0.9 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 24 Feb 2006 Day 55 --- Next scan frequencies: 22238.31 22238.31 Next BBC frequencies: 738.31 738.31 Next scan bandwidths: 8.00 8.00 12 25 31 1749+096 15 46 42 54.1 119.1 -2.1 -49.7 0 1 1 0 12 25 31 12 33 29 --- 15 54 42 55.6 121.4 -2.0 -48.2 479 F 1 0 12 25 54 12 33 29 OH12.8-0.9 15 54 42 30.3 140.2 -2.4 -35.5 -57 1 1 0 12 33 29 12 53 26 --- 16 14 42 32.9 144.8 -2.0 -31.5 1140 F 1 0 12 33 29 12 53 26 OH12.8-0.9 16 14 42 32.9 144.8 -2.0 -31.5 -4 1 1 0 12 53 26 13 13 23 --- 16 34 42 35.3 149.8 -1.7 -27.1 1193 F 1 0 12 53 26 13 13 23 1749+096 16 34 42 62.4 135.4 -1.3 -37.8 -60 1 1 0 13 13 23 13 23 21 --- 16 44 42 63.8 139.8 -1.1 -34.3 538 F 1 0 13 13 23 13 23 21 OH12.8-0.9 16 44 42 36.3 152.4 -1.5 -24.8 -61 1 1 0 13 23 21 13 43 18 --- 17 04 42 38.1 158.0 -1.2 -19.9 1136 F 1 0 13 23 21 13 43 18 OH12.8-0.9 17 04 42 38.1 158.0 -1.2 -19.9 -4 1 1 0 13 43 18 14 03 14 --- 17 24 42 39.5 163.8 -0.9 -14.7 1193 F 1 0 13 43 18 14 05 14 1749+096 17 26 42 68.2 163.1 -0.4 -14.7 56 1 1 0 14 05 14 14 15 12 --- 17 36 42 68.7 169.7 -0.3 -9.0 598 F 1 0 14 05 37 14 15 12 OH12.8-0.9 17 36 42 40.2 167.4 -0.7 -11.4 -63 1 1 0 14 15 12 14 35 09 --- 17 56 42 40.9 173.6 -0.3 -5.8 1134 F 1 0 14 15 12 14 35 09 OH12.8-0.9 17 56 42 40.9 173.6 -0.3 -5.8 -4 1 1 0 14 35 09 14 55 06 --- 18 16 42 41.1 179.9 0.0 -0.1 1193 F 1 0 14 35 09 14 55 06 1749+096 18 16 42 68.2 196.7 0.4 14.5 -60 1 1 0 14 55 06 15 05 04 --- 18 26 42 67.5 203.0 0.6 19.9 538 F 1 0 14 55 06 15 05 04 OH12.8-0.9 18 26 42 41.1 183.0 0.2 2.7 -59 1 1 0 15 05 04 15 25 01 --- 18 46 42 40.6 189.2 0.5 8.4 1138 F 1 0 15 05 04 15 25 01 OH12.8-0.9 18 46 42 40.6 189.2 0.5 8.4 -4 1 1 0 15 25 01 15 44 58 --- 19 06 42 39.7 195.3 0.8 13.9 1193 F 1 0 15 25 01 15 46 57 1749+096 19 08 42 62.4 224.5 1.3 37.7 68 1 1 0 15 46 57 15 56 56 --- 19 18 42 60.9 228.5 1.4 40.8 598 F 1 0 15 47 20 Schedule for VLBA_FD (Code Fd ) Page 3 Water masers in OH12.8-0.9 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). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 24 Feb 2006 Day 55 --- 15 56 56 OH12.8-0.9 19 18 42 38.9 198.9 1.0 17.1 -50 1 1 0 15 56 56 16 16 53 --- 19 38 42 37.3 204.6 1.4 22.1 1147 F 1 0 15 56 56 16 16 53 OH12.8-0.9 19 38 42 37.3 204.6 1.4 22.1 -4 1 1 0 16 16 53 16 36 49 --- 19 58 42 35.4 209.9 1.7 26.9 1193 F 1 0 16 16 53 16 36 49 1749+096 19 58 42 53.8 241.3 2.1 50.0 -43 1 1 0 16 36 49 16 46 48 --- 20 08 42 51.9 243.9 2.3 51.6 555 F 1 0 16 36 49 16 46 48 OH12.8-0.9 20 08 42 34.2 212.5 1.9 29.1 -41 1 1 0 16 46 48 17 06 44 --- 20 28 42 31.8 217.3 2.2 33.3 1155 F 1 0 16 46 48 17 06 44 OH12.8-0.9 20 28 42 31.8 217.3 2.2 33.3 -4 1 1 0 17 06 44 17 26 41 --- 20 48 42 29.0 221.8 2.5 37.2 1193 F 1 0 17 06 44 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bm232c.set Matches group v1cm_b3 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 4 Station: VLBA_FD Total bit rate: 64 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 2 Speedup factor: 2.00 Disk used to record data. 1st LO= 21500.00 21500.00 Net SB= U U Pol. = RCP LCP BBC = 1 2 BBC SB= U U IF = 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: 4 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 22238.31 22238.31 BBC fr= 738.31 738.31 Bandwd= 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 OFF OFF OFF OFF OFF OFF PCALXB2= M1 M2 OFF OFF 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, 18 barrel=roll_off SOURCE LIST -- Water masers in OH12.8-0.9 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) * 1749+096 17 49 10.387957 * 17 51 32.818600 17 51 49.751026 0.00 09 39 42.82545 * 09 39 00.72800 09 38 36.64637 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.964 scan hours, 41.219 baseline hours above horizon. * OH12.8-0.9 18 13 53.447462 * 18 16 49.230000 18 17 10.110948 0.00 -18 16 08.90722 *-18 15 01.80000 -18 15 03.91321 0.00 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: -58.00 -58.00 3.989 scan hours, 160.518 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) 1749+096 71.9 OH12.8-0.9 61.9 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