COVER INFORMATION Station: HART (Code Hh ) Experiment: Helical structure in B1524-136 jets Exp. Code: gm052a Schedule Version: 2.00 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) ---------------------------------------------------------------------------------------- --- Fri 13 Feb 2004 Day 44 --- ----------- Tape Change ------------ Next scan frequencies: 8387.49 8395.49 8403.49 8411.49 8419.49 8427.49 8435.49 8443.49 Next BBC frequencies: 307.49 315.49 323.49 331.49 339.49 347.49 355.49 363.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 00 32 00 3C273 11 52 21 60.7 19.1 -0.6 0.0 0 1 1 0 00 32 00 00 42 00 --- 12 02 23 61.3 14.1 -0.4 0.0 600 F 1 8000 00 44 00 OQ208 12 04 23 28.2 30.6 -2.0 0.0 40 1 1 8000 00 44 00 00 54 00 --- 12 14 25 29.3 28.5 -1.9 0.0 600 F 1 16000 00 56 00 1524-136 12 16 25 43.8 84.5 -3.2 0.0 8 1 2 17600 00 56 00 01 18 00 --- 12 38 29 48.8 81.4 -2.8 0.0 1320 R 1 0 01 20 00 1524-136 12 40 29 49.2 81.1 -2.8 0.0 95 1 3 0 01 20 00 01 42 00 --- 13 02 33 54.1 77.5 -2.4 0.0 1320 F 1 17600 01 44 00 1524-136 13 04 33 54.5 77.2 -2.4 0.0 95 1 4 17600 01 44 00 02 06 00 --- 13 26 37 59.3 72.8 -2.0 0.0 1320 R 1 0 02 08 00 1524-136 13 28 37 59.7 72.3 -2.0 0.0 95 1 5 0 02 08 00 02 30 00 --- 13 50 41 64.4 66.7 -1.6 0.0 1320 F 1 17600 02 32 00 1524-136 13 52 41 64.8 66.1 -1.6 0.0 95 1 6 17600 02 32 00 02 54 00 --- 14 14 45 69.2 58.2 -1.2 0.0 1320 R 1 0 02 56 00 1524-136 14 16 45 69.6 57.3 -1.2 0.0 95 1 7 0 02 56 00 03 18 00 --- 14 38 49 73.5 45.7 -0.8 0.0 1320 F 1 17600 03 22 00 3C273 14 42 49 47.3 305.8 2.2 0.0 122 1 8 17600 03 22 00 03 26 00 --- 14 46 50 46.6 304.8 2.3 0.0 240 R 1 14400 03 30 00 1524-136 14 50 51 75.3 37.1 -0.6 0.0 126 1 8 14400 03 30 00 03 48 00 --- 15 08 53 77.2 20.5 -0.3 0.0 1080 R 1 0 03 50 00 1524-136 15 10 54 77.4 18.4 -0.3 0.0 95 1 9 0 03 50 00 04 12 00 --- 15 32 57 77.9 353.3 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) ---------------------------------------------------------------------------------------- --- Fri 13 Feb 2004 Day 44 --- 04 14 00 1524-136 15 34 58 77.8 351.0 0.1 0.0 95 1 10 17600 04 14 00 04 36 00 --- 15 57 01 76.1 328.4 0.5 0.0 1320 R 1 0 04 38 00 1524-136 15 59 02 75.8 326.7 0.5 0.0 95 1 11 0 04 38 00 05 00 00 --- 16 21 05 72.6 311.0 0.9 0.0 1320 F 1 17600 05 02 00 1524-136 16 23 06 72.2 309.9 0.9 0.0 95 1 12 17600 05 02 00 05 24 00 --- 16 45 09 68.1 299.6 1.3 0.0 1320 R 1 0 05 26 00 1524-136 16 47 10 67.7 298.8 1.3 0.0 95 1 13 0 05 26 00 05 48 00 --- 17 09 13 63.2 291.8 1.7 0.0 1320 F 1 17600 05 50 00 1524-136 17 11 14 62.8 291.2 1.7 0.0 95 1 14 17600 05 50 00 06 12 00 --- 17 33 17 58.1 286.0 2.1 0.0 1320 R 1 0 ----------- Tape Change ------------ 06 29 00 3C273 17 50 20 7.9 276.1 5.4 D 0.0 895 1 1 0 06 29 00 06 33 00 --- 17 54 21 7.0 275.7 5.4 D 0.0 0 F 1 3200 06 35 00 1524-136 17 56 21 53.1 281.7 2.5 0.0 5 1 1 3200 06 35 00 06 53 00 --- 18 14 24 49.1 278.8 2.8 0.0 1080 F 1 17600 06 55 00 1524-136 18 16 24 48.6 278.5 2.8 0.0 95 1 2 17600 06 55 00 07 17 00 --- 18 38 28 43.7 275.5 3.2 0.0 1320 R 1 0 07 19 00 1524-136 18 40 28 43.3 275.2 3.2 0.0 95 1 3 0 07 19 00 07 41 00 --- 19 02 32 38.3 272.5 3.6 0.0 1320 F 1 17600 07 43 00 1524-136 19 04 32 37.9 272.3 3.6 0.0 95 1 4 17600 07 43 00 08 05 00 --- 19 26 36 32.9 269.8 4.0 0.0 1320 R 1 0 08 07 00 1524-136 19 28 36 32.5 269.6 4.0 0.0 95 1 5 0 08 07 00 08 29 00 --- 19 50 40 27.5 267.3 4.4 0.0 1320 F 1 17600 08 33 00 3C273 19 54 40 -20.0 262.2 7.4 D 0.0 95 1 6 17600 08 33 00 08 37 00 --- 19 58 41 -20.9 261.8 7.5 D 0.0 0 R 1 14400 08 41 00 1524-136 20 02 42 24.8 266.0 4.6 0.0 95 1 6 14400 08 41 00 08 59 00 --- 20 20 45 20.8 264.2 4.9 0.0 1080 R 1 0 09 01 00 1524-136 20 22 45 20.3 264.0 4.9 0.0 95 1 7 0 09 01 00 09 23 00 --- 20 44 49 15.4 261.8 5.3 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/v4cm-256-8-2-R.set Matches group hhsx in /irasoft/sched/catalogs/freq.dat Values confirmed by E-mail Jonathan Quick 291100 (CR) Setup group: 6 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= 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 Net SB= U U U U U U U U Pol. = RCP RCP RCP RCP RCP RCP RCP RCP 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: 6 Setup file default. No pcal detection. LO sum= 8387.49 8395.49 8403.49 8411.49 8419.49 8427.49 8435.49 8443.49 BBC fr= 307.49 315.49 323.49 331.49 339.49 347.49 355.49 363.49 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 19.577652 02 19 43.30550 * 02 03 08.59800 02 01 43.15285 From catalog imbedded in main SCHED input file. * OQ208 14 04 45.615152 * 14 07 00.394411 14 07 11.579404 28 41 29.23491 * 28 27 14.68994 28 25 50.10005 From catalog imbedded in main SCHED input file. * 1524-136 15 24 12.880517 * 15 26 59.450000 15 27 12.349893 -13 40 34.86530 *-13 51 00.10000 -13 51 55.35258 From catalog imbedded in main SCHED input file. J1642+6856 16 42 18.064884 * 16 42 07.848514 16 42 06.219180 * 1642+690 69 02 13.21712 * 68 56 39.75640 68 55 47.82456 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 137.9 OQ208 117.8 1524-136 91.1 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