COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: VLBA/VLTI/Keck Observations of AGB Stars Exp. Code: BC168C Schedule Version: 1.00 Processed by SCHED version: 6.05 June 2006 PI: W. D. Cotton Address: NRAO 520 Edgemont Road Charlottesville, VA 22903 Phone: (434) 2960319 EMAIL: bcotton@nrao.edu Fax: (434) 2960278 Phone during observation: (434) 2968266 Observing mode: Notes: BE SURE PULSE CAL IS OFF ON PROGRAM SOURCES. To be run around 1 October 2007 Schedule for VLBA_HN (Code Hn ) Page 2 VLBA/VLTI/Keck Observations of AGB Stars 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Sun 24 Feb 2008 Day 55 --- Next scan frequencies: 43122.78 43122.78 42821.32 42821.32 Next BBC frequencies: 922.78 922.78 621.32 621.32 Next scan bandwidths: 4.00 4.00 4.00 4.00 09 57 49 J1613+3412 15 24 32 77.0 128.1 -0.8 -44.1 0 1 1 0 09 57 49 10 01 49 --- 15 28 32 77.6 130.9 -0.8 -42.0 239 F 1 2 09 58 12 10 02 49 S_SER 15 29 32 61.3 183.8 0.1 2.8 19 1 1 2 10 02 49 10 19 46 --- 15 46 32 60.9 192.2 0.4 9.2 1017 F 1 10 10 03 12 Next scan frequencies: 43131.74 43131.74 42830.22 42830.22 Next BBC frequencies: 931.74 931.74 630.22 630.22 10 21 45 J1751+0939 15 48 32 47.2 131.9 -2.1 -33.5 73 1 1 10 10 21 45 10 25 45 --- 15 52 32 47.7 133.1 -2.0 -32.8 239 F 1 12 10 22 08 10 26 45 RT_OPH 15 53 32 48.5 130.7 -2.1 -34.5 52 1 1 12 10 26 45 10 43 42 --- 16 10 32 50.7 136.1 -1.8 -31.2 1017 F 1 20 10 27 08 Next scan frequencies: 43122.78 43122.78 42821.32 42821.32 Next BBC frequencies: 922.78 922.78 621.32 621.32 10 45 41 J1613+3412 16 12 32 81.2 178.0 0.0 -1.8 53 1 1 20 10 45 41 10 49 41 --- 16 16 32 81.2 183.4 0.0 3.0 239 F 1 22 10 46 04 10 50 41 S_SER 16 17 32 59.0 206.8 0.9 19.9 9 1 1 22 10 50 41 11 07 38 --- 16 34 32 57.4 214.0 1.2 25.0 1017 F 1 30 10 51 04 Next scan frequencies: 43130.30 43121.96 42820.50 42820.50 Next BBC frequencies: 930.30 921.96 620.50 620.50 11 09 38 J1743-0350 16 36 32 40.8 157.4 -1.1 -16.4 76 1 1 30 11 09 38 11 13 37 --- 16 40 32 41.0 158.7 -1.1 -15.5 239 F 1 32 11 10 01 11 14 37 T_OPH 16 41 32 30.9 182.1 0.1 1.6 34 1 1 32 11 14 37 11 31 34 --- 16 58 32 30.7 186.8 0.4 5.2 1017 F 1 41 11 15 00 Next scan frequencies: 43131.74 43131.74 42830.22 42830.22 Next BBC frequencies: 931.74 931.74 630.22 630.22 11 33 34 J1751+0939 17 00 32 54.9 157.6 -0.9 -16.4 65 1 1 41 11 33 34 11 37 33 --- 17 04 32 55.1 159.3 -0.8 -15.3 239 F 1 42 11 33 57 Schedule for VLBA_HN (Code Hn ) Page 3 VLBA/VLTI/Keck Observations of AGB Stars 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Sun 24 Feb 2008 Day 55 --- 11 38 33 RT_OPH 17 05 32 56.3 156.8 -0.9 -17.1 51 1 1 42 11 38 33 11 55 30 --- 17 22 32 57.4 164.2 -0.6 -11.7 1017 F 1 51 11 38 56 Next scan frequencies: 43128.70 43128.70 42827.20 42827.20 Next BBC frequencies: 928.70 928.70 627.20 627.20 11 57 30 J2015+3710 17 24 32 57.1 85.3 -2.9 -66.4 61 1 1 51 11 57 30 12 01 29 --- 17 28 32 57.8 85.9 -2.8 -66.5 239 F 1 53 11 57 53 12 02 29 RT_AQL 17 29 32 48.2 128.5 -2.1 -35.8 25 1 1 53 12 02 29 12 19 26 --- 17 46 32 50.5 133.8 -1.9 -32.7 1017 F 1 61 12 02 52 Next scan frequencies: 43122.78 43122.78 42821.32 42821.32 Next BBC frequencies: 922.78 922.78 621.32 621.32 12 21 26 J1613+3412 17 48 32 69.6 252.5 1.6 57.6 35 1 1 61 12 21 26 12 25 25 --- 17 52 32 68.9 253.7 1.6 58.2 239 F 1 63 12 21 49 12 27 25 S_SER 17 54 32 46.6 240.5 2.5 41.1 69 1 1 63 12 27 25 12 44 22 --- 18 11 32 43.8 244.8 2.8 43.1 1017 F 1 71 12 27 48 Next scan frequencies: 43130.30 43121.96 42820.50 42820.50 Next BBC frequencies: 930.30 921.96 620.50 620.50 12 46 22 J1743-0350 18 13 32 42.8 189.9 0.5 7.3 77 1 1 71 12 46 22 12 50 21 --- 18 17 32 42.6 191.3 0.6 8.2 239 F 1 73 12 46 45 12 51 21 T_OPH 18 18 32 26.2 208.1 1.7 21.0 21 1 1 73 12 51 21 13 08 18 --- 18 35 32 24.7 212.3 2.0 24.0 1017 F 1 81 12 51 44 Next scan frequencies: 43128.70 43128.70 42827.20 42827.20 Next BBC frequencies: 928.70 928.70 627.20 627.20 13 10 18 J2015+3710 18 37 32 70.4 98.7 -1.6 -65.3 22 1 1 81 13 10 18 13 14 17 --- 18 41 32 71.2 99.7 -1.6 -65.0 239 F 1 83 13 10 41 13 15 17 RT_AQL 18 42 32 56.5 154.6 -0.9 -18.7 17 1 1 83 13 15 17 13 32 14 --- 18 59 32 57.7 162.0 -0.6 -13.4 1017 F 1 91 13 15 40 13 34 14 BLLAC 19 01 32 57.0 75.2 -3.0 -73.2 56 1 1 91 13 34 14 13 40 13 --- 19 07 32 58.1 75.8 -2.9 -73.7 359 F 1 94 13 34 37 Schedule for VLBA_HN (Code Hn ) Page 4 VLBA/VLTI/Keck Observations of AGB Stars 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Sun 24 Feb 2008 Day 55 --- Next scan frequencies: 43130.30 43121.96 42820.50 42820.50 Next BBC frequencies: 930.30 921.96 620.50 620.50 13 42 12 J1743-0350 19 09 32 39.4 208.0 1.4 20.1 26 1 1 94 13 42 12 13 46 12 --- 19 13 32 39.1 209.2 1.5 20.9 239 F 1 96 13 42 35 13 47 12 T_OPH 19 14 32 20.4 221.3 2.7 30.2 16 1 1 96 13 47 12 14 04 09 --- 19 31 32 18.3 225.0 3.0 32.6 1017 F 1 104 13 47 35 Next scan frequencies: 43122.78 43122.78 42821.32 42821.32 Next BBC frequencies: 922.78 922.78 621.32 621.32 14 06 09 J1613+3412 19 33 32 50.6 274.4 3.3 61.9 49 1 1 104 14 06 09 14 10 08 --- 19 37 32 49.9 275.0 3.4 61.9 239 F 1 106 14 06 32 14 11 08 S_SER 19 38 32 28.5 263.0 4.3 48.6 11 1 1 106 14 11 08 14 28 05 --- 19 55 32 25.4 266.0 4.6 48.9 1017 F 1 114 14 11 31 Next scan frequencies: 43130.30 43121.96 42820.50 42820.50 Next BBC frequencies: 930.30 921.96 620.50 620.50 14 30 05 J1743-0350 19 57 32 34.4 221.6 2.2 29.1 84 1 1 114 14 30 05 14 34 04 --- 20 01 32 33.9 222.6 2.3 29.8 239 F 1 116 14 30 28 14 35 04 T_OPH 20 02 32 14.0 231.4 3.5 36.5 14 1 1 116 14 35 04 14 52 01 --- 20 19 32 11.6 234.7 3.8 38.5 1017 F 1 124 14 35 27 Next scan frequencies: 43131.74 43131.74 42830.22 42830.22 Next BBC frequencies: 931.74 931.74 630.22 630.22 14 55 01 J1751+0939 20 22 32 43.3 235.8 2.5 37.9 110 1 1 124 14 55 01 14 59 00 --- 20 26 32 42.7 236.9 2.6 38.5 239 F 1 126 14 55 24 15 00 00 RT_OPH 20 27 32 44.5 237.1 2.5 38.8 50 1 1 126 15 00 00 15 16 57 --- 20 44 32 41.8 241.5 2.8 41.0 1017 F 1 135 15 00 23 Next scan frequencies: 43128.70 43128.70 42827.20 42827.20 Next BBC frequencies: 928.70 928.70 627.20 627.20 15 18 57 J2015+3710 20 46 32 81.8 228.3 0.5 43.3 34 1 1 135 15 18 57 15 22 56 --- 20 50 32 81.2 232.1 0.6 46.5 239 F 1 137 15 19 20 Schedule for VLBA_HN (Code Hn ) Page 5 VLBA/VLTI/Keck Observations of AGB Stars 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Sun 24 Feb 2008 Day 55 --- 15 23 56 RT_AQL 20 51 32 55.0 212.4 1.2 23.6 1 1 1 137 15 23 56 15 40 53 --- 21 08 32 53.2 218.8 1.5 27.9 1017 F 1 145 15 24 19 15 42 53 BLLAC 21 10 32 80.3 89.2 -0.9 -81.9 27 1 1 145 15 42 53 15 48 52 --- 21 16 32 81.4 90.2 -0.8 -81.9 359 F 1 148 15 43 16 Next scan frequencies: 43122.78 43122.78 42821.32 42821.32 Next BBC frequencies: 922.78 922.78 621.32 621.32 15 50 51 J1613+3412 21 18 32 31.9 -71.0 5.1 56.8 6 1 1 148 15 50 51 15 54 51 --- 21 22 32 31.2 -70.5 5.1 56.5 239 F 1 150 15 51 14 15 58 50 S_SER 21 26 32 8.9 -78.7 6.1 47.8 189 1 1 150 15 58 50 16 15 47 --- 21 43 32 5.8 -75.9 6.4 47.1 1017 F 1 158 15 59 13 Next scan frequencies: 43130.30 43121.96 42820.50 42820.50 Next BBC frequencies: 930.30 921.96 620.50 620.50 16 16 47 J1743-0350 21 44 32 18.6 245.8 4.0 42.0 -161 1 1 158 16 16 47 16 20 46 --- 21 48 32 17.9 246.6 4.1 42.3 79 F 1 160 16 17 10 Next scan frequencies: 43131.74 43131.74 42830.22 42830.22 Next BBC frequencies: 931.74 931.74 630.22 630.22 16 41 43 J1751+0939 22 09 32 25.2 259.3 4.3 46.9 1236 1 1 160 16 41 43 16 45 42 --- 22 13 32 24.5 260.1 4.4 47.0 239 F 1 162 16 42 06 16 46 42 RT_OPH 22 14 32 26.2 260.6 4.3 47.4 50 1 1 162 16 46 42 17 03 39 --- 22 31 32 23.2 263.7 4.6 47.9 1017 F 1 170 16 47 05 Next scan frequencies: 43128.70 43128.70 42827.20 42827.20 Next BBC frequencies: 928.70 928.70 627.20 627.20 17 05 39 J2015+3710 22 33 32 63.2 269.4 2.3 66.8 34 1 1 170 17 05 39 17 09 38 --- 22 37 32 62.5 270.1 2.4 66.8 239 F 1 172 17 06 02 17 12 08 RT_AQL 22 40 02 39.9 245.4 3.0 42.8 98 1 1 172 17 12 08 17 29 05 --- 22 57 02 37.1 249.2 3.3 44.4 1017 F 1 180 17 12 31 17 31 05 BLLAC 22 59 02 79.7 271.3 0.9 81.8 28 1 1 180 17 31 05 17 37 04 --- 23 05 02 78.6 272.2 1.0 81.7 359 F 1 183 17 31 28 Schedule for VLBA_HN (Code Hn ) Page 6 VLBA/VLTI/Keck Observations of AGB Stars 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Sun 24 Feb 2008 Day 55 --- Next scan frequencies: 43122.78 43122.78 42821.32 42821.32 Next BBC frequencies: 922.78 922.78 621.32 621.32 17 39 04 J1613+3412 23 07 02 14.1 303.9 6.9 47.3 -15 1 1 183 17 39 04 17 43 03 --- 23 11 02 13.5 304.5 7.0 46.9 224 F 1 185 17 39 27 Next scan frequencies: 43131.74 43131.74 42830.22 42830.22 Next BBC frequencies: 931.74 931.74 630.22 630.22 18 04 59 J1751+0939 23 33 02 10.0 273.9 5.7 47.8 1290 1 1 185 18 04 59 18 08 59 --- 23 37 02 9.3 274.6 5.8 47.8 239 F 1 187 18 05 22 18 09 59 RT_OPH 23 38 02 11.0 275.1 5.7 48.0 50 1 1 187 18 09 59 18 26 56 --- 23 55 02 7.9 277.9 6.0 47.7 1017 F 1 195 18 10 22 Next scan frequencies: 43128.70 43128.70 42827.20 42827.20 Next BBC frequencies: 928.70 928.70 627.20 627.20 18 28 55 J2015+3710 23 57 02 48.0 281.6 3.7 64.2 33 1 1 195 18 28 55 18 32 55 --- 00 01 02 47.3 282.1 3.8 64.0 239 F 1 197 18 29 18 18 33 55 RT_AQL 00 02 02 25.5 262.1 4.4 47.8 10 1 1 197 18 33 55 18 50 52 --- 00 19 02 22.4 265.2 4.7 48.2 1017 F 1 205 18 34 18 18 52 51 BLLAC 00 21 02 64.8 280.5 2.3 76.8 29 1 1 205 18 52 51 18 58 50 --- 00 27 02 63.7 281.1 2.4 76.3 359 F 1 208 18 53 14 19 24 46 J2015+3710 00 53 02 38.2 288.6 4.6 60.6 1499 1 1 208 19 24 46 19 28 46 --- 00 57 02 37.5 289.1 4.7 60.3 239 F 1 210 19 25 09 19 29 45 RT_AQL 00 58 02 15.3 271.9 5.3 48.4 10 1 1 210 19 29 45 19 46 43 --- 01 15 02 12.2 274.8 5.6 48.2 1017 F 1 218 19 30 08 19 48 42 BLLAC 01 17 02 54.8 286.0 3.2 72.1 28 1 1 218 19 48 42 19 54 41 --- 01 23 02 53.8 286.6 3.3 71.6 359 F 1 221 19 49 05 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bc161.vlba Matches group v7mm_b8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA_HN Total bit rate: 64 Format: VLBA1:2 Bits per sample: 2 Sample rate: 8.000 Number of channels: 4 Speedup factor: 2.00 Disk used to record data. 1st LO= 42200.00 42200.00 42200.00 42200.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.4 11.6 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= 43122.78 43122.78 42821.32 42821.32 BBC fr= 922.78 922.78 621.32 621.32 Bandwd= 4.000 4.000 4.000 4.000 Frequency Set: 11 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 43131.74 43131.74 42830.22 42830.22 BBC fr= 931.74 931.74 630.22 630.22 Bandwd= 4.000 4.000 4.000 4.000 Frequency Set: 20 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 43130.30 43121.96 42820.50 42820.50 BBC fr= 930.30 921.96 620.50 620.50 Bandwd= 4.000 4.000 4.000 4.000 Frequency Set: 30 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 43128.70 43128.70 42827.20 42827.20 BBC fr= 928.70 928.70 627.20 627.20 Bandwd= 4.000 4.000 4.000 4.000 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, 10, 18, 26 barrel=roll_off SOURCE LIST -- VLBA/VLTI/Keck Observations of AGB Stars 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) * BLLAC 22 00 39.362506 * 22 02 43.291373 22 03 01.825789 0.27 42 02 08.59079 * 42 16 39.97993 42 18 56.07631 0.40 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.499 scan hours, 21.527 baseline hours above horizon. * J1613+3412 16 11 47.914510 * 16 13 41.064500 16 14 00.090657 0.00 34 20 19.83496 * 34 12 47.91000 34 11 08.81893 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.399 scan hours, 17.252 baseline hours above horizon. * J1743-0350 17 41 20.616009 * 17 43 58.856133 17 44 24.754055 0.00 -03 48 48.89991 *-03 50 04.61671 -03 50 30.53308 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.332 scan hours, 13.658 baseline hours above horizon. * J1751+0939 17 49 10.387929 * 17 51 32.818572 17 51 56.035372 0.30 09 39 42.82589 * 09 39 00.72844 09 38 36.28048 0.20 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.399 scan hours, 14.946 baseline hours above horizon. * J2015+3710 20 13 37.014534 * 20 15 28.729820 20 15 45.723142 0.00 37 01 44.45892 * 37 10 59.51480 37 12 14.58913 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.399 scan hours, 16.754 baseline hours above horizon. * S_SER 15 19 18.922090 * 15 21 39.534426 15 22 03.377288 0.00 14 29 35.55464 * 14 18 53.12402 14 16 48.42951 0.00 From catalog imbedded in main SCHED input file. Hipparcos position Doppler based on LSR frame and radio definition. Velocities: 20.00 20.00 20.00 20.00 1.695 scan hours, 66.104 baseline hours above horizon. Proper motion used. Reference epoch: 1991.25000 At epoch: RA = 15 21 39.534100 Dec = 14 18 53.08600 Rates: RA = 0.28 mas/yr Dec = 2.25 mas/yr Paralax: 0.0000 mas. Planetary motion (includes proper motion). Ref. MJD: 54520.4179 Rates: RA = 0.52744E-07 s/day Dec = 0.61602E-05 arcsec/day * T_OPH 16 30 52.050129 * 16 33 43.700000 16 34 12.175375 0.00 -16 01 39.77807 *-16 07 54.00000 -16 09 04.75438 0.00 From catalog imbedded in main SCHED input file. ICRS position Doppler based on LSR frame and radio definition. Velocities: -29.00 29.00 29.00 29.00 1.413 scan hours, 56.229 baseline hours above horizon. * RT_OPH 17 54 11.440715 * 17 56 32.036574 17 56 54.916309 0.00 11 10 29.85519 * 11 10 09.62030 11 09 48.42258 0.00 From catalog imbedded in main SCHED input file. ICRS position Doppler based on LSR frame and radio definition. Velocities: -40.00 -40.00 -40.00 -40.00 1.695 scan hours, 63.858 baseline hours above horizon. Proper motion used. Reference epoch: 1991.25000 At epoch: RA = 17 56 32.036000 Dec = 11 10 09.72000 Rates: RA = 0.50 mas/yr Dec = -5.90 mas/yr Paralax: 0.0000 mas. Planetary motion (includes proper motion). Ref. MJD: 54520.4179 Rates: RA = 0.93024E-07 s/day Dec = -0.16153E-04 arcsec/day * RT_AQL 19 35 40.404073 * 19 38 01.612956 19 38 24.091919 0.00 11 36 26.98531 * 11 43 17.99549 11 44 10.41222 0.00 From catalog imbedded in main SCHED input file. Hipparcos position Doppler based on LSR frame and radio definition. Velocities: -28.00 -28.00 -28.00 -28.00 1.695 scan hours, 68.169 baseline hours above horizon. Proper motion used. Reference epoch: 1991.25000 At epoch: RA = 19 38 01.603200 Dec = 11 43 18.22800 Rates: RA = 8.48 mas/yr Dec = -13.76 mas/yr Paralax: 0.0000 mas. Planetary motion (includes proper motion). Ref. MJD: 54520.4179 Rates: RA = 0.15808E-05 s/day Dec = -0.37673E-04 arcsec/day 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) BLLAC 52.2 J1613+3412 98.4 J1743-0350 70.7 J1751+0939 71.5 J2015+3710 56.2 S_SER 108.4 T_OPH 86.1 RT_OPH 70.7 RT_AQL 47.4 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