COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: be034b; 2/8 GHz observations of J2257-364 Exp. Code: be034b Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Philip Edwards Address: Institute of Space and Astronautical Science 3-1-1 Yoshinodai, Sagamihara Kanagawa 229-8510 Japan Phone: +81-42-759-8342 EMAIL: pge@vsop.isas.ac.jp Fax: +81-42-759-8485 Phone during observation: +81-42-759-8342 Observing mode: 128-4-2 at 2cm Notes: Fringe finder J2258-27 Second epoch of two 6.0 hrs dynamically scheduled centered at LST 23.0 Schedule for VLBA_OV (Code Ov ) Page 2 be034b; 2/8 GHz observations of J2257-364 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) ---------------------------------------------------------------------------------------- --- Thu 11 Dec 2003 Day 345 --- Next scan frequencies: 2262.49 2270.49 8412.49 8420.49 Next BBC frequencies: 837.51 829.51 812.49 820.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 21 51 41 J2258-27 19 19 22 7.0 133.4 -3.6 -40.9 0 1 1 0 21 51 41 21 56 10 --- 19 23 52 7.7 134.2 -3.6 -40.3 269 F 1 1795 22 53 31 J2258-27 20 21 22 15.1 144.6 -2.6 -31.4 3420 1 1 1795 22 53 31 22 57 30 --- 20 25 22 15.6 145.4 -2.5 -30.8 239 F 1 3391 22 58 00 J2257-364 20 25 52 8.4 150.0 -2.5 -29.6 10 1 1 3391 22 58 00 23 11 28 --- 20 39 22 9.7 152.5 -2.3 -27.2 808 F 1 8776 23 11 28 J2257-364 20 39 22 9.7 152.5 -2.3 -27.2 -4 1 1 8776 23 11 28 23 31 25 --- 20 59 22 11.4 156.2 -2.0 -23.6 1193 F 1 16754 23 31 25 J2257-364 20 59 22 11.4 156.2 -2.0 -23.6 -4 1 2 16754 23 31 25 23 51 21 --- 21 19 22 12.9 160.0 -1.6 -19.8 1193 R 1 10468 23 53 21 J2258-27 21 21 22 21.0 157.2 -1.6 -20.5 98 1 2 10468 23 53 21 23 57 20 --- 21 25 22 21.3 158.0 -1.5 -19.7 239 R 1 8872 --- Start: Thu 11 Dec 2003 Day 345 -- Stop: Fri 12 Dec 2003 Day 346 --- 23 57 50 J2257-364 21 25 52 13.3 161.3 -1.5 -18.5 8 1 2 8872 23 57 50 00 11 18 --- 21 39 22 14.1 163.9 -1.3 -15.9 808 R 1 3487 00 11 18 J2257-364 21 39 22 14.1 163.9 -1.3 -15.9 -4 1 3 3487 00 11 18 00 31 15 --- 21 59 22 15.1 168.0 -1.0 -11.9 1193 F 1 4491 00 31 15 J2257-364 21 59 22 15.1 168.0 -1.0 -11.9 -4 1 3 4491 00 31 15 00 51 12 --- 22 19 22 15.8 172.1 -0.6 -7.9 1193 F 1 12469 00 51 12 J2257-364 22 19 22 15.8 172.1 -0.6 -7.9 -4 1 4 12469 00 51 12 01 11 08 --- 22 39 22 16.2 176.2 -0.3 -3.7 1193 R 1 14752 01 11 08 J2257-364 22 39 22 16.2 176.2 -0.3 -3.7 -4 1 4 14752 01 11 08 01 31 05 --- 22 59 22 16.3 180.4 0.0 0.4 1193 R 1 6774 01 31 05 J2257-364 22 59 22 16.3 180.4 0.0 0.4 -4 1 4 6774 01 31 05 01 45 03 --- 23 13 22 16.2 183.3 0.3 3.3 834 R 1 1189 Schedule for VLBA_OV (Code Ov ) Page 3 be034b; 2/8 GHz observations of J2257-364 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) ---------------------------------------------------------------------------------------- --- Fri 12 Dec 2003 Day 346 --- 01 47 02 J2258-27 23 15 22 24.7 184.1 0.3 3.7 97 1 5 1189 01 47 02 01 51 02 --- 23 19 22 24.6 185.1 0.4 4.6 239 F 1 406 01 51 32 J2257-364 23 19 52 16.1 184.7 0.4 4.7 7 1 5 406 01 51 32 02 11 28 --- 23 39 52 15.7 188.9 0.7 8.8 1197 F 1 8384 02 11 28 J2257-364 23 39 52 15.7 188.9 0.7 8.8 -4 1 5 8384 02 11 28 02 31 25 --- 23 59 52 14.9 193.0 1.0 12.8 1193 F 1 16362 02 31 25 J2257-364 23 59 52 14.9 193.0 1.0 12.8 -4 1 6 16362 02 31 25 02 44 53 --- 00 13 22 14.3 195.7 1.3 15.5 804 R 1 13452 02 46 53 J2258-27 00 15 22 22.4 198.4 1.3 16.5 97 1 6 13452 02 46 53 02 50 52 --- 00 19 22 22.1 199.3 1.4 17.3 239 R 1 11857 02 51 22 J2257-364 00 19 52 13.9 197.0 1.4 16.8 8 1 6 11857 02 51 22 03 11 19 --- 00 39 52 12.6 200.9 1.7 20.7 1197 R 1 3879 03 11 19 J2257-364 00 39 52 12.6 200.9 1.7 20.7 -4 1 7 3879 03 11 19 03 31 15 --- 00 59 52 11.1 204.7 2.0 24.4 1193 F 1 4100 03 31 15 J2257-364 00 59 52 11.1 204.7 2.0 24.4 -4 1 7 4100 03 31 15 03 44 43 --- 01 13 22 9.9 207.2 2.3 26.9 804 F 1 9485 03 46 43 J2258-27 01 15 22 17.3 211.4 2.3 28.0 99 1 7 9485 03 46 43 03 50 42 --- 01 19 22 16.9 212.2 2.4 28.7 239 F 1 11081 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/vsx-128-4-2-R.set Matches group vsx_22 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 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= 3100.00 3100.00 7600.00 7600.00 Net SB= U U U U Pol. = RCP RCP RCP RCP BBC = 1 2 3 4 BBC SB= L L U U IF = A A B B VLBA FE= 13cm 4cm 13cm 4cm VLBA Synth= 7.6 3.1 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 2262.49 2270.49 8412.49 8420.49 BBC fr= 837.51 829.51 812.49 820.49 Bandwd= 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 S1 S3 S1 S2 S3 S4 PCALXB2= S2 S4 S2 S4 M1 M2 M3 M4 PCALFR1= 510 510 6510 6510 0 0 0 0 PCALFR2= 510 510 6510 6510 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_auto SOURCE LIST -- be034b; 2/8 GHz observations of J2257-364 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) * J2257-364 22 54 23.115930 * 22 57 10.614100 22 57 22.989691 -36 43 46.95984 *-36 27 43.71000 -36 26 45.18796 From catalog imbedded in main SCHED input file. J2258-2758 22 55 22.460655 * 22 58 05.962888 22 58 18.002449 2255-282 -28 14 25.61877 *-27 58 21.25675 -27 57 19.93893 * J2258-27 /home/filehost/cwalker/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) J2257-364 73.3 J2258-27 76.0 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