COVER INFORMATION Station: HOBART (Code Ho ) Experiment: VSOP observation of J1939-63 at 1.6 GHz Exp. Code: v101e Schedule Version: 1.00 Processed by SCHED version: Release of 1 Dec. 1998 PI: E.A. King Address: CSIRO Earth Observation Centre GPO Box 3023 Canberra, ACT 2601, Australia Phone: 61 6 216 7234 EMAIL: Edward.King@eoc.csiro.au Fax: 61 6 216 7222 Phone during observation: Observing mode: VSOP, 1.6 GHz continuum, 128-2-2 Notes: Fringe finder : 2255-282 Schedule for HOBART (Code Ho ) Page 2 VSOP observation of J1939-63 at 1.6 GHz 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) ------------------------------------------------------------------------------- --- Wed 31 Mar 1999 Day 90 --- Next scan frequencies: 1634.00 1650.00 Next BBC frequencies: 164.60 148.60 Next scan bandwidths: 16.00 16.00 23 00 00 J1939-63 21 25 15 64.2 207.0 1.8 48.7 0 1 1 52 23 30 00 --- 21 55 20 61.5 211.2 2.3 59.2 1800 F 1 682 23 30 00 J1939-63 21 55 20 61.5 211.2 2.3 59.2 -2 1 1 682 23 59 59 --- 22 25 25 58.5 214.2 2.8 68.5 1797 F 1 1312 --- Thu 1 Apr 1999 Day 91 --- 00 00 00 J1939-63 22 25 25 58.5 214.2 2.8 68.5 -2 1 1 1312 01 00 00 --- 23 25 35 52.0 216.9 3.8 84.3 3598 F 1 2572 01 00 00 J1939-63 23 25 35 52.0 216.9 3.8 84.3 -2 1 1 2572 02 00 00 --- 00 25 45 45.4 216.7 4.8 97.6 3598 F 1 3832 02 00 00 J1939-63 00 25 45 45.4 216.7 4.8 97.6 -2 1 1 3832 03 00 00 --- 01 25 55 38.9 214.6 5.8 109.7 3598 F 1 5092 03 00 00 J1939-63 01 25 55 38.9 214.6 5.8 109.7 -2 1 1 5092 03 30 00 --- 01 56 00 35.8 213.0 6.3 115.5 1798 F 1 5722 ----------- Tape Change ------------ 03 35 00 2255-282 02 01 01 50.4 276.7 3.0 124.4 216 1 1 52 03 45 00 --- 02 11 02 48.6 274.8 3.2 124.1 600 F 1 263 03 45 00 J1939-63 02 11 02 34.4 212.1 6.5 118.3 -85 1 1 263 04 00 00 --- 02 26 05 32.9 211.1 6.8 121.2 815 F 1 578 04 00 00 J1939-63 02 26 05 32.9 211.1 6.8 121.2 -2 1 1 578 05 00 00 --- 03 26 15 27.6 206.5 7.8 132.3 3598 F 1 1838 05 00 00 J1939-63 03 26 15 27.6 206.5 7.8 132.3 -2 1 1 1838 05 40 00 --- 04 06 21 24.5 203.0 8.5 139.8 2398 F 1 2678 05 40 00 J1939-63 04 06 21 24.5 203.0 8.5 139.8 -2 1 1 2678 06 00 00 --- 04 26 24 23.1 201.0 8.8 143.5 1198 F 1 3098 06 00 00 J1939-63 04 26 24 23.1 201.0 8.8 143.5 -2 1 1 3098 07 00 00 --- 05 26 34 19.7 194.9 9.8 154.8 3598 F 1 4358 Schedule for HOBART (Code Ho ) Page 3 VSOP observation of J1939-63 at 1.6 GHz 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) ------------------------------------------------------------------------------- --- Thu 1 Apr 1999 Day 91 --- 07 00 00 J1939-63 05 26 34 19.7 194.9 9.8 154.8 -2 1 1 4358 08 00 00 --- 06 26 44 17.5 188.3 10.8 166.1 3598 F 1 5618 08 00 00 J1939-63 06 26 44 17.5 188.3 10.8 166.1 -2 1 1 5618 09 00 00 --- 07 26 54 16.5 181.4 11.8 177.6 3598 F 1 6878 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/sched/short-term/progs/sched_dec98/setups/vsop1634_s2.set Matches group ho18cm in /home/sched/short-term/progs/sched_dec98/catalogs/freq.dat LO from M Costa, e-mail 24/03/97 other values guesses Setup group: 3 Station: HOBART Total bit rate: 128 Format: S2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 2 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 6.300 ips, High density - 4.20 ips Time per pass for 7600 ft, High density tapes is: 06:01:54 LO sum= 1634.00 1650.00 1st LO= 1798.60 1798.60 Net SB= U U Pol. = LCP LCP BBC fr= 164.60 148.60 Bandwd= 16.00 16.00 BBC = 1 3 BBC SB= L L IF = 1N 1N Track assignments are: track1= 0, 0 barrel=roll_off SOURCE LIST -- VSOP observation of J1939-63 at 1.6 GHz 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) J1939-6342 19 34 47.606607 * 19 39 25.026194 19 39 18.512026 1934-638 -63 49 37.72384 *-63 42 45.62547 -63 42 35.26892 * J1939-63 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba USNO - Ref Frame 1995-1, Eubanks Mar 1995 J2258-2758 22 55 22.460654 * 22 58 05.962887 22 58 01.242895 * 2255-282 -28 14 25.61808 *-27 58 21.25607 -27 58 41.80084 J2258-27 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba USNO - Ref Frame 1995-1, Eubanks Mar 1995 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) J1939-63 87.5 2255-282 40.7 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