COVER INFORMATION Station: HART (Code Hh ) Experiment: Helical structure in B1524-136 jets Exp. Code: gm052b Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 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 HART (Code Hh ) Page 2 Helical structure in B1524-136 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sat 14 Feb 2004 Day 45 --- ----------- Tape Change ------------ Next scan frequencies: 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 Next BBC frequencies: 120.49 128.49 136.49 144.49 152.49 160.49 168.49 176.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 00 32 00 3C273 11 56 18 61.0 17.2 -0.6 0.0 0 1 1 0 00 32 00 00 42 00 --- 12 06 19 61.5 12.1 -0.4 0.0 600 F 1 8000 00 44 00 OQ208 12 08 20 28.6 29.8 -2.0 0.0 40 1 1 8000 00 44 00 00 54 00 --- 12 18 21 29.7 27.6 -1.8 0.0 600 F 1 16000 00 56 00 1524-136 12 20 22 44.7 83.9 -3.1 0.0 8 1 2 17600 00 56 00 01 18 00 --- 12 42 25 49.6 80.8 -2.7 0.0 1320 R 1 0 01 20 00 1524-136 12 44 26 50.1 80.5 -2.7 0.0 95 1 3 0 01 20 00 01 42 00 --- 13 06 29 54.9 76.8 -2.3 0.0 1320 F 1 17600 01 44 00 1524-136 13 08 30 55.4 76.5 -2.3 0.0 95 1 4 17600 01 44 00 02 06 00 --- 13 30 33 60.2 71.9 -1.9 0.0 1320 R 1 0 02 08 00 1524-136 13 32 34 60.6 71.4 -1.9 0.0 95 1 5 0 02 08 00 02 30 00 --- 13 54 37 65.2 65.5 -1.5 0.0 1320 F 1 17600 02 32 00 1524-136 13 56 38 65.6 64.8 -1.5 0.0 95 1 6 17600 02 32 00 02 54 00 --- 14 18 41 69.9 56.5 -1.1 0.0 1320 R 1 0 02 56 00 1524-136 14 20 42 70.3 55.5 -1.1 0.0 95 1 7 0 02 56 00 03 18 00 --- 14 42 45 74.1 43.0 -0.7 0.0 1320 F 1 17600 03 20 00 3C273 14 44 45 47.0 305.3 2.3 0.0 3 1 8 17600 03 20 00 03 24 00 --- 14 48 46 46.2 304.3 2.3 0.0 240 R 1 14400 03 26 00 1524-136 14 50 46 75.3 37.1 -0.6 0.0 5 1 8 14400 03 26 00 03 44 00 --- 15 08 49 77.2 20.6 -0.3 0.0 1080 R 1 0 03 46 00 1524-136 15 10 50 77.4 18.5 -0.3 0.0 95 1 9 0 03 46 00 04 08 00 --- 15 32 53 77.9 353.4 0.1 0.0 1320 F 1 17600 Schedule for HART (Code Hh ) Page 3 Helical structure in B1524-136 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sat 14 Feb 2004 Day 45 --- 04 10 00 1524-136 15 34 54 77.8 351.1 0.1 0.0 95 1 10 17600 04 10 00 04 32 00 --- 15 56 57 76.1 328.5 0.5 0.0 1320 R 1 0 04 34 00 1524-136 15 58 58 75.9 326.7 0.5 0.0 95 1 11 0 04 34 00 04 56 00 --- 16 21 01 72.6 311.0 0.9 0.0 1320 F 1 17600 04 58 00 1524-136 16 23 02 72.2 309.9 0.9 0.0 95 1 12 17600 04 58 00 05 20 00 --- 16 45 05 68.1 299.6 1.3 0.0 1320 R 1 0 05 22 00 1524-136 16 47 05 67.7 298.9 1.3 0.0 95 1 13 0 05 22 00 05 44 00 --- 17 09 09 63.3 291.8 1.7 0.0 1320 F 1 17600 05 46 00 1524-136 17 11 09 62.8 291.3 1.7 0.0 95 1 14 17600 05 46 00 06 08 00 --- 17 33 13 58.1 286.0 2.1 0.0 1320 R 1 0 ----------- Tape Change ------------ 06 25 00 3C345 17 50 16 22.5 346.1 1.1 0.0 886 1 1 0 06 25 00 06 29 00 --- 17 54 16 22.3 345.3 1.2 0.0 240 F 1 3200 06 31 00 1524-136 17 56 17 53.1 281.7 2.5 0.0 -14 1 1 3200 06 31 00 06 49 00 --- 18 14 20 49.1 278.8 2.8 0.0 1066 F 1 17600 06 51 00 1524-136 18 16 20 48.7 278.5 2.8 0.0 95 1 2 17600 06 51 00 07 13 00 --- 18 38 24 43.7 275.5 3.2 0.0 1320 R 1 0 07 15 00 1524-136 18 40 24 43.3 275.2 3.2 0.0 95 1 3 0 07 15 00 07 37 00 --- 19 02 28 38.3 272.5 3.6 0.0 1320 F 1 17600 07 39 00 1524-136 19 04 28 37.9 272.3 3.6 0.0 95 1 4 17600 07 39 00 08 01 00 --- 19 26 32 32.9 269.8 4.0 0.0 1320 R 1 0 08 03 00 1524-136 19 28 32 32.5 269.6 4.0 0.0 95 1 5 0 08 03 00 08 25 00 --- 19 50 36 27.5 267.3 4.4 0.0 1320 F 1 17600 08 27 00 1637+574 19 52 36 -2.6 336.1 3.2 D 0.0 -25 1 6 17600 08 27 00 08 31 00 --- 19 56 37 -3.0 335.7 3.3 D 0.0 0 R 1 14400 08 33 00 1524-136 19 58 37 25.7 266.5 4.5 0.0 -25 1 6 14400 08 33 00 08 51 00 --- 20 16 40 21.7 264.6 4.8 0.0 1055 R 1 0 08 53 00 1524-136 20 18 40 21.2 264.4 4.9 0.0 95 1 7 0 08 53 00 09 15 00 --- 20 40 44 16.3 262.2 5.2 0.0 1320 F 1 17600 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /irasoft/sched/setups/v6cm-256-8-2-L.set Matches group hh6cm in /irasoft/sched/catalogs/freq.dat Values confirmed by E-mail Jonathan Quick 291100 (CR) Setup group: 8 Station: HART Total bit rate: 256 Format: MKIV1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 270.000 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 4840.00 4840.00 4840.00 4840.00 4840.00 4840.00 4840.00 4840.00 Net SB= U U U U U U U U Pol. = LCP LCP LCP LCP LCP LCP LCP LCP BBC = 1 3 5 7 9 11 13 2 BBC SB= U U U U U U U U IF = 1N 1N 1N 1N 1N 1N 1N 2A The following frequency sets based on this setup were used. Frequency Set: 8 Setup file default. No pcal detection. LO sum= 4960.49 4968.49 4976.49 4984.49 4992.49 5000.49 5008.49 5016.49 BBC fr= 120.49 128.49 136.49 144.49 152.49 160.49 168.49 176.49 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off SOURCE LIST -- Helical structure in B1524-136 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 19.603680 02 19 43.30550 * 02 03 08.59800 02 01 43.01229 From catalog imbedded in main SCHED input file. * OQ208 14 04 45.615152 * 14 07 00.394411 14 07 11.612080 28 41 29.23491 * 28 27 14.68994 28 25 50.05163 From catalog imbedded in main SCHED input file. * 1524-136 15 24 12.880517 * 15 26 59.450000 15 27 12.385859 -13 40 34.86530 *-13 51 00.10000 -13 51 55.45989 From catalog imbedded in main SCHED input file. J1638+5720 16 37 17.425178 * 16 38 13.456293 16 38 17.324466 * 1637+574 57 26 15.76147 * 57 20 23.97918 57 19 31.14683 J1638+57 /irasoft/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report J1642+3948 16 41 17.606214 * 16 42 58.809952 16 43 06.266114 1641+399 39 54 10.81489 * 39 48 36.99395 39 47 47.97809 * 3C345 /irasoft/sched/catalogs/sources.vlba J1642+39 ICRF - Ext.1 Source - 1998 IERS Annual Report J1642+6856 16 42 18.064884 * 16 42 07.848514 16 42 06.279838 * 1642+690 69 02 13.21712 * 68 56 39.75640 68 55 47.71872 J1642+68 /irasoft/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 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 138.9 OQ208 118.5 1524-136 92.1 1637+574 94.6 3C345 88.4 1642+690 97.6 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