COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: BB75: Vir A at 18cm // epoch 1 Exp. Code: BB075 Schedule Version: 1.00 Processed by SCHED version: 10 Feb 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 1 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) ------------------------------------------------------------------------------- --- Tue 25 Feb 1997 Day 56 --- 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 05 10 00 3C274 09 24 08 40.0 112.0 -3.1 -45.1 0 1 1 0 05 32 00 --- 09 46 11 43.8 117.2 -2.7 -42.8 1320 F 1 4400 05 32 00 3C274 09 46 11 43.8 117.2 -2.7 -42.8 -2 1 1 4400 05 54 00 --- 10 08 15 47.3 123.0 -2.4 -39.8 1318 F 1 8800 05 56 00 3C274 10 10 15 47.6 123.5 -2.3 -39.5 117 1 1 8800 06 18 00 --- 10 32 19 50.9 130.1 -2.0 -35.8 1320 F 1 13200 06 18 00 3C274 10 32 19 50.9 130.1 -2.0 -35.8 -2 1 1 13200 06 40 00 --- 10 54 23 53.9 137.4 -1.6 -31.1 1318 F 1 17600 06 42 00 3C274 10 56 23 54.2 138.1 -1.6 -30.6 117 1 2 17600 07 04 00 --- 11 18 27 56.7 146.5 -1.2 -24.9 1320 R 1 13200 07 04 00 3C274 11 18 27 56.7 146.5 -1.2 -24.9 -2 1 2 13200 07 26 00 --- 11 40 30 58.7 155.9 -0.8 -18.2 1318 R 1 8800 07 28 00 3C274 11 42 31 58.8 156.8 -0.8 -17.5 117 1 2 8800 07 50 00 --- 12 04 34 60.1 167.1 -0.4 -9.8 1320 R 1 4400 07 50 00 3C274 12 04 34 60.1 167.1 -0.4 -9.8 -2 1 2 4400 08 12 00 --- 12 26 38 60.6 178.0 -0.1 -1.5 1318 R 1 0 08 14 00 3C274 12 28 38 60.6 179.0 0.0 -0.8 117 1 1 0 08 36 00 --- 12 50 42 60.3 189.9 0.3 7.5 1320 F 2 4400 08 36 00 3C274 12 50 42 60.3 189.9 0.3 7.5 -2 1 1 4400 08 58 00 --- 13 12 45 59.2 200.4 0.7 15.4 1318 F 2 8800 08 58 00 3C273B 13 12 45 49.1 196.8 0.7 12.5 -22 1 1 8800 09 03 00 --- 13 17 46 48.8 198.7 0.8 13.8 278 F 2 9800 09 03 00 3C274 13 17 46 58.9 202.7 0.8 17.1 -22 1 1 9800 09 20 00 --- 13 34 49 57.5 210.1 1.1 22.5 998 F 2 13200 09 20 00 3C274 13 34 49 57.5 210.1 1.1 22.5 -2 1 1 13200 09 42 00 --- 13 56 53 55.1 218.9 1.4 28.6 1318 F 2 17600 Schedule for VLBA_NL (Code Nl ) Page 3 BB75: Vir A at 18cm // epoch 1 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) ------------------------------------------------------------------------------- --- Tue 25 Feb 1997 Day 56 --- 09 42 00 OQ208 13 56 53 76.5 170.5 -0.2 -8.0 -45 1 2 17600 09 47 00 --- 14 01 53 76.7 175.2 -0.1 -4.0 255 R 2 16600 09 49 00 3C274 14 03 54 54.3 221.5 1.6 30.4 73 1 2 16600 10 06 00 --- 14 20 56 52.1 227.3 1.8 34.2 1020 R 2 13200 10 08 00 3C274 14 22 57 51.8 228.0 1.9 34.6 117 1 2 13200 10 30 00 --- 14 45 00 48.6 234.7 2.2 38.6 1320 R 2 8800 10 30 00 3C274 14 45 00 48.6 234.7 2.2 38.6 -2 1 2 8800 10 52 00 --- 15 07 04 45.1 240.8 2.6 41.8 1318 R 2 4400 10 54 00 3C274 15 09 04 44.8 241.3 2.6 42.0 117 1 2 4400 11 16 00 --- 15 31 08 41.1 246.6 3.0 44.5 1320 R 2 0 11 16 00 3C274 15 31 08 41.1 246.6 3.0 44.5 -2 1 3 0 11 38 00 --- 15 53 12 37.2 251.5 3.4 46.4 1318 F 1 4400 11 38 00 OQ208 15 53 12 64.7 246.8 1.8 51.3 -57 1 3 4400 11 43 00 --- 15 58 12 63.8 248.4 1.9 52.1 243 F 1 5400 11 43 00 3C274 15 58 12 36.4 252.6 3.5 46.8 -57 1 3 5400 12 00 00 --- 16 15 15 33.3 256.0 3.7 47.8 963 F 1 8800 12 00 00 3C274 16 15 15 33.3 256.0 3.7 47.8 -2 1 3 8800 12 22 00 --- 16 37 19 29.3 260.2 4.1 48.8 1318 F 1 13200 12 22 00 3C274 16 37 19 29.3 260.2 4.1 48.8 -2 1 3 13200 12 44 00 --- 16 59 22 25.2 264.1 4.5 49.4 1318 F 1 17600 12 44 00 3C274 16 59 22 25.2 264.1 4.5 49.4 -2 1 4 17600 13 00 00 --- 17 15 25 22.2 266.9 4.7 49.7 958 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 SOURCE LIST -- BB75: Vir A at 18cm // epoch 1 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 33.24499 * 12 29 06.69970 12 28 59.07947 1226+023 02 19 43.2835 * 02 03 08.5980 02 03 58.0229 3C273 /home/arana/cwalker/sched/catalogs/sources.vlba * 3C273B VLA Calibrator Source List J1229+02 J1230+1223 12 28 17.56844 * 12 30 49.42340 12 30 41.80957 1228+126 12 40 01.7274 * 12 23 28.0442 12 24 15.7324 * 3C274 /home/arana/cwalker/sched/catalogs/sources.vlba J1230+12 USNO - Ref Frame 1995-1, Eubanks Mar 1995 J1407+2827 14 04 45.61392 * 14 07 00.39442 14 06 53.28872 1404+286 28 41 29.2163 * 28 27 14.6900 28 27 53.1314 J1407+28 /home/arana/cwalker/sched/catalogs/sources.vlba * OQ208 USNO - Ref Frame 1995-1, Eubanks Mar 1995