COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: B1524-136: a quasar with two-sided radio jets Exp. Code: bm183a Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 PI: Franco Mantovani Address: Istituto di Radioastronomia Via P. Gobetti, 101 I-40129 Bologna Italy Phone: +39 051 639 9377 EMAIL: fmantovani@ira.cnr.it Fax: +39 051 639 9431 Phone during observation: Observing mode: Continuum Notes: Schedule for VLBA_NL (Code Nl ) Page 2 B1524-136: a quasar with two-sided radio jets 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). 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) ---------------------------------------------------------------------------------------- --- Wed 29 Jan 2003 Day 29 --- Next scan frequencies: 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 Next BBC frequencies: 860.49 868.49 876.49 884.49 892.49 900.49 908.49 916.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 08 41 43 1524-136 11 08 11 8.6 117.4 -4.3 -43.0 0 1 1 0 08 41 43 09 25 35 --- 11 52 11 15.6 125.6 -3.6 -38.6 2632 F 1 17550 09 27 35 3C273 11 54 11 49.5 166.4 -0.6 -10.1 46 1 2 17550 09 27 35 09 33 34 --- 12 00 11 49.7 168.7 -0.5 -8.4 359 R 1 15158 09 35 34 1524-136 12 02 11 17.1 127.6 -3.4 -37.5 49 1 2 15158 09 35 34 10 13 27 --- 12 40 11 22.4 135.7 -2.8 -32.5 2273 R 1 2 10 15 27 1524-136 12 42 11 22.6 136.1 -2.7 -32.2 113 1 3 2 10 15 27 10 59 20 --- 13 26 11 27.8 146.5 -2.0 -25.1 2632 F 1 17552 11 01 20 1524-136 13 28 11 28.0 147.0 -2.0 -24.8 114 1 4 17552 11 01 20 11 45 12 --- 14 12 11 31.7 158.5 -1.2 -16.4 2632 R 1 2 11 47 12 3C273 14 14 11 43.8 217.7 1.7 27.2 74 1 5 2 11 47 12 11 53 11 --- 14 20 11 43.1 219.6 1.8 28.4 359 F 1 2393 11 55 11 1524-136 14 22 11 32.4 161.2 -1.1 -14.3 75 1 5 2393 11 55 11 12 33 04 --- 15 00 11 34.0 172.1 -0.4 -6.1 2273 F 1 17550 12 35 04 1524-136 15 02 11 34.1 172.7 -0.4 -5.6 114 1 6 17550 12 35 04 13 18 57 --- 15 46 11 34.2 185.6 0.3 4.3 2632 R 1 0 13 20 57 1524-136 15 48 11 34.2 186.2 0.4 4.7 114 1 7 0 13 20 57 14 04 49 --- 16 32 11 32.4 198.8 1.1 14.3 2632 F 1 17550 14 06 49 3C273 16 34 11 22.5 251.5 4.1 45.0 79 1 8 17550 14 06 49 14 12 48 --- 16 40 11 21.4 252.6 4.2 45.4 359 R 1 15159 14 14 48 1524-136 16 42 11 31.7 201.5 1.3 16.4 80 1 8 15159 14 14 48 14 52 41 --- 17 20 11 28.6 211.6 1.9 23.7 2273 R 1 2 14 54 41 1524-136 17 22 11 28.4 212.1 1.9 24.1 114 1 9 2 14 54 41 15 38 34 --- 18 06 11 23.4 222.6 2.7 31.3 2632 F 1 17552 Schedule for VLBA_NL (Code Nl ) Page 3 B1524-136: a quasar with two-sided radio jets 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). 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) ---------------------------------------------------------------------------------------- --- Wed 29 Jan 2003 Day 29 --- 15 40 34 1524-136 18 08 11 23.1 223.0 2.7 31.6 113 1 10 17552 15 40 34 16 24 26 --- 18 52 11 17.1 232.4 3.4 37.5 2632 R 1 2 16 26 26 3C345 18 54 11 65.3 276.5 2.2 74.7 18 1 11 2 16 26 26 16 32 25 --- 19 00 11 64.1 277.2 2.3 74.4 359 F 1 2393 16 34 25 1524-136 19 02 11 15.6 234.4 3.6 38.6 17 1 11 2393 16 34 25 17 12 19 --- 19 40 11 9.6 241.6 4.2 42.5 2273 F 1 17550 17 14 19 1524-136 19 42 11 9.2 241.9 4.3 42.7 113 1 12 17550 17 14 19 17 58 11 --- 20 26 11 1.8 249.6 5.0 D 46.0 0 R 1 0 18 40 04 3C345 21 08 11 41.1 291.1 4.4 64.9 2430 1 13 0 18 40 04 18 46 03 --- 21 14 11 40.0 291.8 4.5 64.4 359 F 1 2391 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/filehost/cwalker/sched/setups/v6cm-128-8-1-L.set Matches group v6cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 1 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 2.00 Tape speeds: Low density - 133.330 ips, High density - 80.00 ips Time per pass for 17600 ft, High density tapes is: 00:44:00 1st LO= 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 Net SB= U U U U U U U U Pol. = LCP LCP LCP LCP LCP LCP LCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = C C C C C C C C VLBA FE= 6cm omit 6cm omit VLBA Synth= 15.4 4.1 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 BBC fr= 860.49 868.49 876.49 884.49 892.49 900.49 908.49 916.49 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- B1524-136: a quasar with two-sided radio jets 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). Source Source position (RA/Dec) (B1950) (J2000) (Date) * 3C273 12 26 33.245804 * 12 29 06.699700 12 29 15.940471 02 19 43.30550 * 02 03 08.59800 02 02 06.73809 From catalog imbedded in main SCHED input file. * 1524-136 15 24 12.880517 * 15 26 59.450000 15 27 08.364944 -13 40 34.86530 *-13 51 00.10000 -13 51 38.02456 From catalog imbedded in main SCHED input file. * 3C345 16 41 17.606162 * 16 42 58.809900 16 43 03.543725 39 54 10.81394 * 39 48 36.99300 39 48 00.47697 From catalog imbedded in main SCHED input file. 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) 3C273 123.2 1524-136 76.4 3C345 80.9 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