COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 09 15 01 38.4 110.0 -3.3 -45.9 0 1 1 0 11 02 00 --- 09 37 05 42.2 115.0 -2.9 -43.8 1320 F 1 4400 11 02 00 3C274 09 37 05 42.2 115.0 -2.9 -43.8 -2 1 1 4400 11 24 00 --- 09 59 08 45.9 120.5 -2.5 -41.1 1318 F 1 8800 11 26 00 3C274 10 01 09 46.2 121.0 -2.5 -40.9 117 1 1 8800 11 48 00 --- 10 23 12 49.6 127.3 -2.1 -37.4 1320 F 1 13200 11 48 00 3C274 10 23 12 49.6 127.3 -2.1 -37.4 -2 1 1 13200 12 10 00 --- 10 45 16 52.7 134.3 -1.8 -33.1 1318 F 1 17600 12 12 00 3C274 10 47 16 53.0 135.0 -1.7 -32.7 117 1 2 17600 12 34 00 --- 11 09 20 55.7 143.0 -1.4 -27.4 1320 R 1 13200 12 34 00 3C274 11 09 20 55.7 143.0 -1.4 -27.4 -2 1 2 13200 12 56 00 --- 11 31 23 57.9 151.9 -1.0 -21.1 1318 R 1 8800 12 58 00 3C274 11 33 24 58.1 152.8 -1.0 -20.4 117 1 2 8800 13 20 00 --- 11 55 27 59.6 162.8 -0.6 -13.1 1320 R 1 4400 13 20 00 3C274 11 55 27 59.6 162.8 -0.6 -13.1 -2 1 2 4400 13 42 00 --- 12 17 31 60.5 173.5 -0.2 -5.0 1318 R 1 0 13 44 00 3C274 12 19 31 60.5 174.4 -0.2 -4.2 117 1 1 0 14 06 00 --- 12 41 35 60.5 185.4 0.2 4.1 1320 F 2 4400 14 06 00 3C274 12 41 35 60.5 185.4 0.2 4.1 -2 1 1 4400 14 28 00 --- 13 03 38 59.8 196.1 0.5 12.2 1318 F 2 8800 14 28 00 3C273B 13 03 38 49.5 193.4 0.6 10.0 -22 1 1 8800 14 33 00 --- 13 08 39 49.3 195.3 0.7 11.4 278 F 2 9800 14 33 00 3C274 13 08 39 59.5 198.5 0.6 14.0 -22 1 1 9800 14 50 00 --- 13 25 42 58.3 206.2 0.9 19.7 998 F 2 13200 14 50 00 3C274 13 25 42 58.3 206.2 0.9 19.7 -2 1 1 13200 15 12 00 --- 13 47 46 56.2 215.4 1.3 26.2 1318 F 2 17600 Schedule for VLBA_NL (Code Nl ) 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 13 47 46 76.1 162.2 -0.3 -15.0 -42 1 2 17600 15 17 00 --- 13 52 47 76.4 166.7 -0.2 -11.2 258 R 2 16600 15 19 00 3C274 13 54 47 55.4 218.1 1.4 28.1 76 1 2 16600 15 36 00 --- 14 11 50 53.3 224.3 1.7 32.2 1020 R 2 13200 15 38 00 3C274 14 13 50 53.0 224.9 1.7 32.6 117 1 2 13200 16 00 00 --- 14 35 54 50.0 232.0 2.1 37.0 1320 R 2 8800 16 00 00 3C274 14 35 54 50.0 232.0 2.1 37.0 -2 1 2 8800 16 22 00 --- 14 57 57 46.6 238.4 2.5 40.5 1318 R 2 4400 16 24 00 3C274 14 59 58 46.3 238.9 2.5 40.8 117 1 2 4400 16 46 00 --- 15 22 01 42.6 244.5 2.9 43.6 1320 R 2 0 16 46 00 3C274 15 22 01 42.6 244.5 2.9 43.6 -2 1 3 0 17 08 00 --- 15 44 05 38.8 249.5 3.2 45.7 1318 F 1 4400 17 08 00 OQ208 15 44 05 66.2 243.8 1.6 49.6 -57 1 3 4400 17 13 00 --- 15 49 06 65.4 245.5 1.7 50.5 243 F 1 5400 17 13 00 3C274 15 49 06 38.0 250.6 3.3 46.1 -57 1 3 5400 17 30 00 --- 16 06 08 34.9 254.2 3.6 47.3 963 F 1 8800 17 30 00 3C274 16 06 08 34.9 254.2 3.6 47.3 -2 1 3 8800 17 52 00 --- 16 28 12 30.9 258.5 4.0 48.4 1318 F 1 13200 17 52 00 3C274 16 28 12 30.9 258.5 4.0 48.4 -2 1 3 13200 18 14 00 --- 16 50 16 26.9 262.5 4.3 49.2 1318 F 1 17600 18 14 00 3C274 16 50 16 26.9 262.5 4.3 49.2 -2 1 4 17600 18 30 00 --- 17 06 18 23.9 265.4 4.6 49.6 958 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