COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: BB75: Vir A at 18cm // epoch 4 Exp. Code: BB075D Schedule Version: 1.00 Processed by SCHED version: Version of 18 August 1997 PI: Bill Junor Address: Dept. Physics & Astronomy, University of New Mexico 800 Yale Blvd., N.E., Albuquerque, New Mexico, 87131 U.S.A. Phone: 505 846 4948 EMAIL: bjunor@astro.phys.unm.edu Fax: 505 277 1520 Phone during observation: 505 237 2128 Observing mode: Continuum Notes: Non-standard frequency scheme. Will need non-standard patch at VLA. Schedule for VLBA_HN (Code Hn ) Page 2 BB75: Vir A at 18cm // epoch 4 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. ------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes Stop UT LST EL AZ HA UP ParA Dwell (see above) ------------------------------------------------------------------------------- --- Mon 1 Dec 1997 Day 335 --- Next scan frequencies: 1412.99 1412.99 1662.99 1662.99 Next BBC frequencies: 987.01 987.01 737.01 737.01 Next scan bandwidths: 4.00 4.00 4.00 4.00 10 40 00 3C274 10 33 22 50.3 131.5 -2.0 -34.2 0 1 1 0 11 02 00 --- 10 55 26 53.2 138.9 -1.6 -29.6 1320 F 1 4400 11 02 00 3C274 10 55 26 53.2 138.9 -1.6 -29.6 -2 1 1 4400 11 24 00 --- 11 17 29 55.6 147.1 -1.2 -24.0 1318 F 1 8800 11 26 00 3C274 11 19 30 55.8 147.9 -1.2 -23.5 117 1 1 8800 11 48 00 --- 11 41 33 57.7 157.1 -0.8 -16.9 1320 F 1 13200 11 48 00 3C274 11 41 33 57.7 157.1 -0.8 -16.9 -2 1 1 13200 12 10 00 --- 12 03 37 58.9 167.1 -0.5 -9.6 1318 F 1 17600 12 12 00 3C274 12 05 37 59.0 168.1 -0.4 -8.9 117 1 2 17600 12 34 00 --- 12 27 41 59.5 178.5 -0.1 -1.1 1320 R 1 13200 12 34 00 3C274 12 27 41 59.5 178.5 -0.1 -1.1 -2 1 2 13200 12 56 00 --- 12 49 44 59.2 189.1 0.3 6.8 1318 R 1 8800 12 58 00 3C274 12 51 45 59.1 190.1 0.4 7.5 117 1 2 8800 13 20 00 --- 13 13 48 58.1 200.2 0.7 15.0 1320 R 1 4400 13 20 00 3C274 13 13 48 58.1 200.2 0.7 15.0 -2 1 2 4400 13 42 00 --- 13 35 52 56.4 209.7 1.1 21.8 1318 R 1 0 13 44 00 3C274 13 37 52 56.2 210.5 1.1 22.3 117 1 1 0 14 06 00 --- 13 59 56 53.9 219.0 1.5 28.1 1320 F 2 4400 14 06 00 3C274 13 59 56 53.9 219.0 1.5 28.1 -2 1 1 4400 14 28 00 --- 14 21 59 51.1 226.6 1.9 33.0 1318 F 2 8800 14 28 00 3C273B 14 21 59 42.0 219.5 1.9 27.8 -20 1 1 8800 14 33 00 --- 14 27 00 41.4 221.0 2.0 28.7 280 F 2 9800 14 33 00 3C274 14 27 00 50.5 228.2 1.9 34.0 -20 1 1 9800 14 50 00 --- 14 44 03 48.0 233.4 2.2 37.0 1000 F 2 13200 14 50 00 3C274 14 44 03 48.0 233.4 2.2 37.0 -2 1 1 13200 15 12 00 --- 15 06 07 44.7 239.5 2.6 40.2 1318 F 2 17600 Schedule for VLBA_HN (Code Hn ) Page 3 BB75: Vir A at 18cm // epoch 4 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. ------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes Stop UT LST EL AZ HA UP ParA Dwell (see above) ------------------------------------------------------------------------------- --- Mon 1 Dec 1997 Day 335 --- 15 12 00 OQ208 15 06 07 71.2 224.3 1.0 35.6 -55 1 2 17600 15 17 00 --- 15 11 07 70.6 227.0 1.1 37.6 245 R 2 16600 15 19 00 3C274 15 13 08 43.6 241.3 2.7 41.1 64 1 2 16600 15 36 00 --- 15 30 11 40.8 245.5 3.0 43.0 1020 R 2 13200 15 38 00 3C274 15 32 11 40.4 246.0 3.0 43.2 117 1 2 13200 16 00 00 --- 15 54 15 36.7 250.9 3.4 45.1 1320 R 2 8800 16 00 00 3C274 15 54 15 36.7 250.9 3.4 45.1 -2 1 2 8800 16 22 00 --- 16 16 18 32.8 255.5 3.8 46.5 1318 R 2 4400 16 24 00 3C274 16 18 19 32.5 255.9 3.8 46.6 117 1 2 4400 16 46 00 --- 16 40 22 28.5 260.1 4.2 47.6 1320 R 2 0 16 46 00 3C274 16 40 22 28.5 260.1 4.2 47.6 -2 1 3 0 17 08 00 --- 17 02 26 24.5 264.2 4.5 48.2 1318 F 1 4400 17 08 00 OQ208 17 02 26 52.0 262.3 2.9 55.6 -57 1 3 4400 17 13 00 --- 17 07 27 51.1 263.3 3.0 55.8 243 F 1 5400 17 13 00 3C274 17 07 27 23.6 265.0 4.6 48.3 -57 1 3 5400 17 30 00 --- 17 24 29 20.5 268.0 4.9 48.5 963 F 1 8800 17 30 00 3C274 17 24 29 20.5 268.0 4.9 48.5 -2 1 3 8800 17 52 00 --- 17 46 33 16.5 271.8 5.3 48.5 1318 F 1 13200 17 52 00 3C274 17 46 33 16.5 271.8 5.3 48.5 -2 1 3 13200 18 14 00 --- 18 08 37 12.4 275.5 5.6 48.3 1318 F 1 17600 18 14 00 3C274 18 08 37 12.4 275.5 5.6 48.3 -2 1 4 17600 18 30 00 --- 18 24 39 9.5 278.1 5.9 47.9 958 R 1 14400 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bj18_20cm.set Matches group v20cm_2 in /home/arana/cwalker/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 1 Station: VLBA Total bit rate: 32 Format: VLBA1:4 Bits per sample: 1 Sample rate: 8.000 Number of channels: 4 Passes/head pos: 2 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 LO sum= 1412.99 1412.99 1662.99 1662.99 1st LO= 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC fr= 987.01 987.01 737.01 737.01 Bandwd= 4.00 4.00 4.00 4.00 BBC = 1 2 3 4 BBC SB= L L L L IF = A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 Pulse cal detection. PCAL = 1MHz PCALXB1= S1 S3 S1 S3 S1 S3 S1 S3 PCALXB2= S2 S4 S2 S4 S2 S4 S2 S4 PCALFR1= 10 10 3010 3010 0 0 1010 1010 PCALFR2= 10 10 3010 3010 0 0 1010 1010 Track assignments are: track1= 2, 10, 18, 26 track2= 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- BB75: Vir A at 18cm // epoch 4 Catalog positions marked with *. Position of date is for stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Source Source position (RA/Dec) (B1950) (J2000) (Date) J1229+0203 12 26 33.24307 * 12 29 06.69970 12 28 59.34751 1226+023 02 19 43.2317 * 02 03 08.5980 02 03 55.5761 3C273 /home/arana/cwalker/sched/catalogs/sources.vlba * 3C273B VLA Calibrator Source List J1229+02 J1230+1223 12 28 17.56642 * 12 30 49.42340 12 30 42.00538 1228+126 12 40 01.6757 * 12 23 28.0442 12 24 11.6871 * 3C274 /home/arana/cwalker/sched/catalogs/sources.vlba J1230+12 USNO - Ref Frame 1995-1, Eubanks Mar 1995 J1407+2827 14 04 45.61099 * 14 07 00.39442 14 06 52.99197 1404+286 28 41 29.1724 * 28 27 14.6900 28 27 53.3073 J1407+28 /home/arana/cwalker/sched/catalogs/sources.vlba * OQ208 USNO - Ref Frame 1995-1, Eubanks Mar 1995