COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: VLBA/VLTI Obs. of GX Mon Exp. Code: BB220B Schedule Version: 2.00 Processed by SCHED version: 6.04 March 2006 PI: Dave Boboltz Address: USNO 3450 Massachusetts Ave., NW Washington, DC 20392-5420, USA Phone: 202-762-1488 EMAIL: dboboltz@usno.navy.mil Fax: 202-762-1514 Phone during observation: 202-762-1488 Observing mode: Notes: RCP/LCP. 7mm VLBA 5hr track Schedule for VLBA_FD (Code Fd ) Page 2 VLBA/VLTI Obs. of GX Mon 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Sat 8 Apr 2006 Day 98 --- Next scan frequencies: 42811.73 42811.73 43113.19 43113.19 Next BBC frequencies: 611.73 611.73 913.19 913.19 Next scan bandwidths: 8.00 8.00 8.00 8.00 23 04 14 0420-014 05 16 42 55.6 204.0 0.9 20.5 0 1 1 0 23 04 14 23 14 12 --- 05 26 42 54.7 208.1 1.1 23.9 598 F 1 10 23 04 32 23 14 12 GXMON 05 26 42 60.0 133.3 -1.4 -39.3 -56 1 1 10 23 14 12 23 38 08 --- 05 50 42 63.4 143.5 -1.0 -31.2 1380 F 1 33 23 14 12 --- Start: Sat 8 Apr 2006 Day 98 -- Stop: Sun 9 Apr 2006 Day 99 --- 23 38 08 GXMON 05 50 42 63.4 143.5 -1.0 -31.2 -4 1 1 33 23 38 08 00 02 04 --- 06 14 42 66.0 156.0 -0.6 -20.7 1432 F 1 56 23 38 08 00 04 04 0748+126 06 16 42 61.6 124.6 -1.6 -46.5 93 1 1 56 00 04 04 00 12 03 --- 06 24 42 63.0 127.5 -1.4 -44.4 479 F 1 64 00 04 22 00 12 03 GXMON 06 24 42 66.8 161.9 -0.5 -15.7 -29 1 1 64 00 12 03 00 35 59 --- 06 48 42 67.8 177.1 -0.1 -2.5 1407 F 1 87 00 12 03 00 35 59 GXMON 06 48 42 67.8 177.1 -0.1 -2.5 -4 1 1 87 00 35 59 00 59 55 --- 07 12 42 67.3 192.6 0.3 11.0 1432 F 1 110 00 35 59 01 01 54 0748+126 07 14 42 70.0 153.1 -0.6 -23.5 87 1 1 110 01 01 54 01 09 53 --- 07 22 42 70.7 158.5 -0.5 -18.9 479 F 1 118 01 02 12 01 09 53 GXMON 07 22 42 66.7 198.8 0.5 16.3 -33 1 1 118 01 09 53 01 33 49 --- 07 46 42 64.5 212.2 0.9 27.6 1403 F 1 141 01 09 53 01 33 49 GXMON 07 46 42 64.5 212.2 0.9 27.6 -4 1 1 141 01 33 49 01 57 45 --- 08 10 42 61.3 223.2 1.3 36.6 1432 F 1 164 01 33 49 01 59 45 0748+126 08 12 42 71.2 196.5 0.4 14.5 94 1 1 164 01 59 45 02 07 44 --- 08 20 42 70.6 202.2 0.5 19.4 479 F 1 172 02 00 03 02 07 44 GXMON 08 20 42 59.8 227.2 1.5 39.6 -28 1 1 172 02 07 44 02 31 40 --- 08 44 42 55.8 235.4 1.9 45.7 1408 F 1 195 02 07 44 02 31 40 GXMON 08 44 42 55.8 235.4 1.9 45.7 -4 1 1 195 02 31 40 02 55 36 --- 09 08 42 51.4 242.1 2.3 50.2 1432 F 1 218 02 31 40 Schedule for VLBA_FD (Code Fd ) Page 3 VLBA/VLTI Obs. of GX Mon 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Sun 9 Apr 2006 Day 99 --- 02 57 35 0748+126 09 10 42 64.2 229.7 1.3 42.2 88 1 1 218 02 57 35 03 05 34 --- 09 18 42 62.9 232.9 1.5 44.6 479 F 1 226 02 57 53 03 05 34 GXMON 09 18 42 49.4 244.5 2.4 51.7 -33 1 1 226 03 05 34 03 29 30 --- 09 42 42 44.7 249.7 2.8 54.7 1403 F 1 249 03 05 34 03 29 30 GXMON 09 42 42 44.7 249.7 2.8 54.7 -4 1 1 249 03 29 30 03 53 26 --- 10 06 42 39.8 254.2 3.2 56.8 1432 F 1 272 03 29 30 03 55 26 J0700+1709 10 08 42 45.2 263.6 3.1 63.5 103 1 1 272 03 55 26 04 05 24 --- 10 18 42 43.1 265.1 3.3 63.8 598 F 1 282 03 55 44 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bb220.set Matches group v7mm_b8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 4 Station: VLBA_FD Total bit rate: 128 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Speedup factor: 1.00 Disk used to record data. 1st LO= 42200.00 42200.00 42200.00 42200.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.4 11.6 The following frequency sets based on this setup were used. Frequency Set: 4 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 42811.73 42811.73 43113.19 43113.19 BBC fr= 611.73 611.73 913.19 913.19 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 = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26 barrel=roll_off SOURCE LIST -- VLBA/VLTI Obs. of GX Mon 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). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 0420-014 04 20 43.539853 * 04 23 15.800730 04 23 33.941436 0.00 -01 27 28.70010 *-01 20 33.06540 -01 19 41.22353 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.166 scan hours, 7.480 baseline hours above horizon. * J0700+1709 06 57 07.785942 * 07 00 01.525540 07 00 23.141890 0.00 17 13 35.02531 * 17 09 21.70150 17 08 56.66030 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.166 scan hours, 7.480 baseline hours above horizon. * 0748+126 07 48 05.060502 * 07 50 52.045740 07 51 13.117200 0.00 12 38 45.47752 * 12 31 04.82820 12 30 11.57380 0.00 From catalog imbedded in main SCHED input file. Doppler based on other sources. 0.532 scan hours, 23.934 baseline hours above horizon. * GXMON 06 50 03.619446 * 06 52 47.041400 06 53 07.307807 0.00 08 29 01.96297 * 08 25 19.02600 08 24 54.82389 0.00 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: -10.00 -10.00 -10.00 -10.00 3.989 scan hours, 176.965 baseline hours above horizon. 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) 0420-014 49.0 J0700+1709 85.4 0748+126 98.2 GXMON 84.7 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