COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: Jet motion in the high-z blazar Q0906-6930 Exp. Code: BG154C Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Lincoln J. Greenhill Address: CfA 60 Garden St, M.S. 42 Cambridge, MA 02138 USA Phone: (617) 495-7194 EMAIL: greenhill@cfa.harvard.edu Fax: (617) 495-7345 Phone during observation: (617) 851-8918 Observing mode: 128-4-2 2 cm Notes: Suitable for dynamic scheduling. Pulse-cal at all stations. 150 minute track approved. 141m scheduled to permit 9m setup. 3 epochs separated by ~90 days. This one can be 2nd or 3rd but is best as epoch 3. That permits the 3mm epoch in winter. Schedule for VLBA_MK (Code Mk ) Page 2 Jet motion in the high-z blazar Q0906-6930 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) ---------------------------------------------------------------------------------------- --- Tue 8 Feb 2005 Day 39 --- Next scan frequencies: 15357.49 15357.49 15365.49 15365.49 Next BBC frequencies: 757.49 757.49 765.49 765.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 05 43 44 0716+714 04 35 39 33.1 14.7 -2.8 -131.7 0 1 1 0 05 43 44 05 47 43 --- 04 39 39 33.3 14.5 -2.7 -132.7 239 F 1 1596 05 48 43 Q0906+6930 04 40 39 26.6 21.1 -4.4 -105.0 40 1 1 1596 05 48 43 06 27 57 --- 05 19 59 29.9 19.8 -3.8 -114.8 2354 F 1 17286 06 28 57 0716+714 05 20 59 35.5 11.5 -2.0 -144.2 43 1 2 17286 06 28 57 06 32 56 --- 05 24 59 35.7 11.1 -2.0 -145.4 239 R 1 15690 06 33 56 Q0906+6930 05 25 59 30.3 19.5 -3.7 -116.4 43 1 2 15690 06 33 56 07 13 09 --- 06 05 19 33.3 17.4 -3.0 -126.7 2354 R 1 0 07 15 09 0716+714 06 07 19 37.3 7.4 -1.3 -157.6 106 1 3 0 07 15 09 07 19 08 --- 06 11 19 37.4 7.1 -1.2 -158.8 239 F 1 1596 07 20 08 Q0906+6930 06 12 19 33.8 16.9 -2.9 -128.6 47 1 3 1596 07 20 08 07 59 22 --- 06 51 39 36.2 14.0 -2.3 -139.5 2354 F 1 17286 08 00 22 0716+714 06 52 39 38.3 3.0 -0.5 -171.0 47 1 4 17286 08 00 22 08 04 21 --- 06 56 39 38.3 2.6 -0.4 -172.2 239 R 1 15690 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/v2cm-128-4-2.set Matches group v2cm_d3 in /home/filehost/cwalker/sched/catalogs/freq.dat Fourth 2cm filter 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= 14600.00 14600.00 14600.00 14600.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = B D B D VLBA FE= omit 2cm omit 2cm VLBA Synth= 14.6 10.9 10.9 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 15357.49 15357.49 15365.49 15365.49 BBC fr= 757.49 757.49 765.49 765.49 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 -- Jet motion in the high-z blazar Q0906-6930 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) (B1950) (J2000) (Date) * Q0906+6930 09 01 52.296508 * 09 06 30.749400 09 07 03.174169 69 42 32.11551 * 69 30 30.84400 69 29 21.45883 From catalog imbedded in main SCHED input file. 1.961 scan hours, 107.871 baseline hours above horizon. J0721+7120 07 16 13.029725 * 07 21 53.448460 07 22 31.573851 * 0716+714 71 26 15.17405 * 71 20 36.36339 71 20 15.19632 J0721+71 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.266 scan hours, 14.627 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) Q0906+6930 125.3 0716+714 120.5 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