COVER INFORMATION Station: SHANG_S2 (Code Sh ) Experiment: VSOP observation of J0024-42 at 1.6 GHz Exp. Code: w058b Schedule Version: 1.00 Processed by SCHED version: Short term release of 12 Feb. 2001 PI: Jim Lovell Address: COSSA GPO Box 3023 Canberra, ACT 2601, Australia Phone: 61 2 6216 7197 EMAIL: jlovell@atnf.csiro.au Fax: 61 2 6216 7222 Phone during observation: Observing mode: VSOP, 1.6 GHz continuum, 128-2-2 Notes: Fringe finder : J0106-40 Schedule for SHANG_S2 (Code Sh ) Page 2 VSOP observation of J0024-42 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. 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) ---------------------------------------------------------------------------------------- --- Sun 10 Jun 2001 Day 161 --- Next scan frequencies: 1634.00 1650.00 Next BBC frequencies: 566.00 550.00 Next scan bandwidths: 16.00 16.00 20 30 00 J0024-42 21 51 50 8.9 152.3 -2.5 -32.4 0 1 1 52 20 30 00 21 30 00 --- 22 52 00 13.8 162.5 -1.5 -20.3 3600 F 1 1312 21 31 00 J0106-40 22 53 00 11.9 154.7 -2.2 -28.8 42 1 1 1333 21 31 00 21 36 00 --- 22 58 01 12.4 155.5 -2.1 -27.8 300 F 1 1438 21 37 00 J0024-42 22 59 01 14.3 163.7 -1.4 -18.8 42 1 1 1459 21 37 00 22 30 00 --- 23 52 10 16.5 173.7 -0.5 -7.3 3180 F 1 2572 22 30 00 J0024-42 23 52 10 16.5 173.7 -0.5 -7.3 -2 1 1 2572 22 30 00 23 30 00 --- 00 52 20 16.6 185.3 0.5 6.2 3598 F 1 3832 --- Start: Sun 10 Jun 2001 Day 161 -- Stop: Mon 11 Jun 2001 Day 162 --- 23 30 00 J0024-42 00 52 20 16.6 185.3 0.5 6.2 -2 1 1 3832 23 30 00 00 54 00 --- 02 16 34 12.5 200.9 1.9 24.3 5038 F 1 5596 00 55 00 J0106-40 02 17 34 16.5 193.9 1.2 15.7 44 1 1 5617 00 55 00 01 00 00 --- 02 22 35 16.2 194.9 1.3 16.8 300 F 1 5722 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/current/setups/vsop1634_s2.set Matches group sh18cm in /home/sched/short-term/progs/current/catalogs/freq.dat Huang Xinyong 170300, dual pol but narrow(?) Setup group: 2 Station: SHANG_S2 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 1st LO= 2200.00 2200.00 Net SB= U U Pol. = LCP LCP BBC = 1 3 BBC SB= L L IF = A A The following frequency sets based on this setup were used. Frequency Set: 4 Setup file default. Used pcal sets: 1 LO sum= 1634.00 1650.00 BBC fr= 566.00 550.00 Bandwd= 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S1 S1 S2 S1 OFF OFF OFF PCALXB2= S2 S2 M1 M2 S2 OFF OFF OFF PCALFR1= 1000 13000 0 0 2000 0 0 0 PCALFR2= 1000 13000 0 0 2000 0 0 0 Track assignments are: track1= 0, 0 barrel=roll_off SOURCE LIST -- VSOP observation of J0024-42 at 1.6 GHz 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) J0024-4202 00 22 15.412842 * 00 24 42.989864 00 24 45.626467 0022-423 -42 18 41.07308 *-42 02 03.94979 -42 01 30.39344 * J0024-42 /home/sched/short-term/progs/current/catalogs/sources.vlba USNO - Ref Frame 1998-6, Eubanks June 1998 J0106-4034 01 04 27.574512 * 01 06 45.107967 01 06 47.243841 0104-408 -40 50 21.55626 *-40 34 19.96036 -40 33 48.75714 * J0106-40 /home/sched/short-term/progs/current/catalogs/sources.vlba USNO - Ref Frame 1998-6, Eubanks June 1998 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) J0024-42 93.5 J0106-40 86.1 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