COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 16 36 11 53.8 147.2 -1.3 -24.2 0 1 1 0 12 25 31 12 33 29 --- 16 44 11 54.6 150.3 -1.1 -22.0 479 F 1 3191 12 25 44 12 33 29 OH12.8-0.9 16 44 11 26.2 155.3 -1.5 -19.2 -63 1 1 3191 12 33 29 12 53 26 --- 17 04 11 27.6 160.4 -1.2 -15.3 1134 F 1 11169 12 33 29 12 53 26 OH12.8-0.9 17 04 11 27.6 160.4 -1.2 -15.3 -4 1 2 11169 12 53 26 13 13 23 --- 17 24 11 28.7 165.6 -0.9 -11.2 1193 R 1 16052 12 53 26 13 13 23 1749+096 17 24 11 57.3 167.3 -0.5 -9.6 -63 1 2 16052 13 13 23 13 23 21 --- 17 34 11 57.6 171.9 -0.3 -6.2 535 R 1 12063 13 13 23 13 23 21 OH12.8-0.9 17 34 11 29.2 168.3 -0.7 -9.2 -63 1 2 12063 13 23 21 13 43 18 --- 17 54 11 29.7 173.7 -0.4 -4.9 1134 R 1 4085 13 23 21 13 43 18 OH12.8-0.9 17 54 11 29.7 173.7 -0.4 -4.9 -4 1 1 4085 13 43 18 14 03 14 --- 18 14 11 30.0 179.2 0.0 -0.6 1193 F 2 3893 13 43 18 14 05 14 1749+096 18 16 11 57.4 191.2 0.4 8.4 59 1 1 3893 14 05 14 14 15 12 --- 18 26 11 57.0 195.7 0.6 11.8 598 F 2 7882 14 05 27 14 15 12 OH12.8-0.9 18 26 11 29.9 182.5 0.2 1.9 -60 1 1 7882 14 15 12 14 35 09 --- 18 46 11 29.6 187.9 0.5 6.2 1137 F 2 15860 14 15 12 14 35 09 OH12.8-0.9 18 46 11 29.6 187.9 0.5 6.2 -4 1 2 15860 14 35 09 14 55 06 --- 19 06 11 28.9 193.3 0.8 10.4 1193 R 2 11362 14 35 09 14 55 06 1749+096 19 06 11 54.0 212.3 1.2 23.8 -56 1 2 11362 14 55 06 15 05 04 --- 19 16 11 52.9 216.0 1.4 26.4 542 R 2 7373 14 55 06 15 05 04 OH12.8-0.9 19 16 11 28.4 196.0 1.0 12.5 -55 1 3 7373 15 05 04 15 25 01 --- 19 36 11 27.3 201.2 1.3 16.5 1142 F 1 606 15 05 04 15 25 01 OH12.8-0.9 19 36 11 27.3 201.2 1.3 16.5 -4 1 3 606 15 25 01 15 44 58 --- 19 56 11 25.8 206.2 1.7 20.3 1193 F 1 8584 15 25 01 15 46 57 1749+096 19 58 11 47.6 229.9 2.1 35.4 70 1 3 8584 15 46 57 15 56 56 --- 20 08 11 46.1 232.8 2.3 37.1 598 F 1 12573 15 47 10 Schedule for VLBA_NL (Code Nl ) 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 20 08 11 24.7 209.1 1.9 22.5 -49 1 4 12573 15 56 56 16 16 53 --- 20 28 11 22.8 213.9 2.2 26.0 1148 R 1 14649 15 56 56 16 16 53 OH12.8-0.9 20 28 11 22.8 213.9 2.2 26.0 -4 1 4 14649 16 16 53 16 36 49 --- 20 48 11 20.6 218.4 2.5 29.2 1193 R 1 6671 16 16 53 16 36 49 1749+096 20 48 11 39.8 243.2 2.9 42.5 -44 1 4 6671 16 36 49 16 46 48 --- 20 58 11 38.1 245.5 3.1 43.5 554 R 1 2682 16 36 49 16 46 48 OH12.8-0.9 20 58 11 19.4 220.6 2.7 30.7 -43 1 3 2682 16 46 48 17 06 44 --- 21 18 11 16.9 224.8 3.0 33.6 1153 F 2 5296 16 46 48 17 06 44 OH12.8-0.9 21 18 11 16.9 224.8 3.0 33.6 -4 1 3 5296 17 06 44 17 26 41 --- 21 38 11 14.1 228.9 3.4 36.3 1193 F 2 13275 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: 3 Station: VLBA_NL Total bit rate: 64 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 2 Passes/head pos: 2 Speedup factor: 2.00 Tape used at high density at 80.000 ips. Time per pass is 44.00 minutes. 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: 3 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 track2= 3, 19 barrel=roll_auto 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