COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: Monitoring Knot HST-1 in M87 Jet Exp. Code: BH151C Schedule Version: 1.00 Processed by SCHED version: 6.05 June 2006 PI: Teddy Cheung Address: NASA GSFC Code 661 Greenbelt MD 20771, USA Phone: 301 286 5749 EMAIL: ccheung@milkyway.gsfc.nasa.gov Fax: 301 286 1682 Phone during observation: Observing mode: 18cm 128-8-1 Notes: 3C286 is for EVPA calibration at 18cm 3C273 is Fringe finder and for use in CROSSPOL COVER LETTER: This is BH151C. Summary: BH151A, B, and C: We request a "mini"-campaign of 3 VLBA L-band observations of M87 for late Jan/early Feb while the TeV telescopes are observing (necessary for dark moon time). The first epoch (A) should begin around Jan 30-Feb 3, then the other two should follow by 5+/- 2 days (epoch B) and 10 +/-2 days (epoch C). -------------------------------------------------------------------- Here is the official dynamic scheduling sheet: ================================================================ Preferred Dynamic Contraints. Alter [defaults] as desired. ================================================================ Equipment constraints: Stations. Below each station code, the "o" indicates an [optional] station that is to be used if it is available. Change "o" to "r" if the station is required or change "o" to "n" if the station is not to be used. SC HN NL FD LA PT KP OV BR MK o o o o o o o o o r Minimum number of stations [7]: May we swap PT for a single VLA antenna? [yes] Consult http://www.aoc.nrao.edu/~gtaylor/y1gotcha.html to decide. If you adopt the default, then both PT and VLA1 must be in the stations list in the keyin file. Bands and polarizations. Below each band code, insert "R" if the righthand polarization is to be used, "L" if the lefthand polarization is to be used, "d" if dual polarizations are to be used, or "o" if the band is in your setups but scheduling should not be constrained by its availability. 90cm 50cm 20cm 13cm 6cm 4cm 2cm 1cm 7mm 3mm d Weather constraints: [appropriate for bands marked "L", "R", or "d" above and for at least the minimum number of stations] Date constraints: Preferred date(s), usually a series start [none]: Excluded dates plus reason [none]: Preferred interval between segments in days [none]: This epoch (C) around 10 +/- 2 days after epoch A. Special conditions (e.g., a series with different spacings in time) [See the comments at the top.]: Schedule for VLBA_BR (Code Br ) Page 2 Monitoring Knot HST-1 in M87 Jet 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 ---------------------------------------------------------------------------------------- --- Wed 13 Feb 2008 Day 44 --- Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 06 11 49 3C286 07 43 45 24.1 70.5 -5.8 -46.9 0 1 1 0 06 11 49 06 17 18 --- 07 49 15 25.0 71.4 -5.7 -47.2 329 F 1 5 06 12 12 06 18 18 3C273 07 50 15 14.8 104.0 -4.7 -40.4 32 1 1 5 06 18 18 06 23 47 --- 07 55 45 15.7 105.1 -4.6 -40.2 329 F 1 11 06 18 41 06 24 46 3C274 07 56 45 23.4 97.7 -4.6 -42.6 39 1 1 11 06 24 46 06 54 42 --- 08 26 45 28.3 103.7 -4.1 -41.6 1795 F 1 40 06 25 09 06 55 41 3C274 08 27 45 28.5 103.9 -4.1 -41.5 54 1 1 40 06 55 41 07 25 36 --- 08 57 45 33.2 110.4 -3.6 -39.8 1795 F 1 69 06 56 04 07 27 36 3C286 08 59 45 36.4 83.1 -4.5 -50.2 95 1 1 69 07 27 36 07 33 05 --- 09 05 15 37.3 84.0 -4.4 -50.4 329 F 1 74 07 27 59 07 34 57 3C273 09 07 07 26.7 120.2 -3.4 -35.3 82 1 1 74 07 34 57 07 40 26 --- 09 12 37 27.5 121.4 -3.3 -34.7 329 F 1 79 07 35 20 07 41 26 3C274 09 13 37 35.7 114.0 -3.3 -38.6 37 1 1 79 07 41 26 08 11 21 --- 09 43 37 40.1 121.4 -2.8 -35.7 1795 F 1 108 07 41 49 08 12 21 3C274 09 44 37 40.3 121.7 -2.8 -35.5 54 1 1 108 08 12 21 08 42 16 --- 10 14 37 44.3 129.9 -2.3 -31.6 1795 F 1 137 08 12 44 08 44 16 3C286 10 16 37 49.2 97.5 -3.2 -50.1 92 1 1 137 08 44 16 08 49 45 --- 10 22 07 50.1 98.7 -3.2 -50.0 329 F 1 142 08 44 39 08 50 54 3C273 10 23 16 36.5 139.4 -2.1 -25.8 35 1 1 142 08 50 54 08 56 23 --- 10 28 46 37.1 141.0 -2.0 -24.9 329 F 1 148 08 51 17 08 57 23 3C274 10 29 46 46.2 134.5 -2.0 -29.2 36 1 1 148 08 57 23 09 27 18 --- 10 59 46 49.5 144.3 -1.5 -23.5 1795 F 1 177 08 57 46 09 28 17 3C274 11 00 46 49.6 144.6 -1.5 -23.3 54 1 1 177 09 28 17 09 58 13 --- 11 30 46 52.1 155.5 -1.0 -16.5 1795 F 1 206 09 28 40 Schedule for VLBA_BR (Code Br ) Page 3 Monitoring Knot HST-1 in M87 Jet 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 ---------------------------------------------------------------------------------------- --- Wed 13 Feb 2008 Day 44 --- 10 00 12 3C286 11 32 46 61.3 117.2 -2.0 -43.5 88 1 1 206 10 00 12 10 05 41 --- 11 38 16 62.1 119.0 -1.9 -42.6 329 F 1 211 10 00 35 10 06 53 3C273 11 39 28 42.6 162.9 -0.8 -11.3 27 1 1 211 10 06 53 10 12 22 --- 11 44 58 42.9 164.7 -0.7 -10.1 329 F 1 216 10 07 16 10 13 22 3C274 11 45 58 53.0 161.4 -0.8 -12.6 34 1 1 216 10 13 22 10 43 17 --- 12 15 58 54.1 173.6 -0.3 -4.4 1795 F 1 245 10 13 45 10 44 17 3C274 12 16 58 54.1 174.0 -0.2 -4.1 54 1 1 245 10 44 17 11 14 12 --- 12 46 58 54.1 186.5 0.3 4.5 1795 F 1 274 10 44 40 11 16 12 3C286 12 48 58 70.5 151.4 -0.7 -21.7 81 1 1 274 11 16 12 11 21 41 --- 12 54 28 71.0 154.8 -0.6 -19.2 329 F 1 279 11 16 35 11 22 51 3C273 12 55 38 43.5 189.0 0.4 6.0 9 1 1 279 11 22 51 11 28 20 --- 13 01 08 43.4 190.9 0.5 7.2 329 F 1 285 11 23 14 11 29 20 3C274 13 02 08 53.6 192.8 0.5 8.7 33 1 1 285 11 29 20 11 59 15 --- 13 32 08 52.0 204.6 1.0 16.5 1795 F 1 314 11 29 43 12 00 15 3C274 13 33 08 52.0 205.0 1.0 16.8 54 1 1 314 12 00 15 12 30 10 --- 14 03 08 49.4 215.9 1.5 23.6 1795 F 1 343 12 00 38 12 32 10 3C286 14 05 08 71.2 203.0 0.6 17.6 70 1 1 343 12 32 10 12 37 39 --- 14 10 38 70.8 206.4 0.7 20.2 329 F 1 348 12 32 33 12 38 49 3C273 14 11 48 38.9 213.6 1.7 21.7 0 1 1 348 12 38 49 12 44 18 --- 14 17 18 38.4 215.3 1.8 22.7 329 F 1 353 12 39 12 12 45 18 3C274 14 18 18 47.8 221.0 1.8 26.6 35 1 1 353 12 45 18 13 15 13 --- 14 48 18 44.3 230.2 2.3 31.7 1795 F 1 382 12 45 41 13 16 13 3C274 14 49 18 44.1 230.5 2.3 31.8 54 1 1 382 13 16 13 13 46 08 --- 15 19 18 40.1 238.7 2.8 35.7 1795 F 1 411 13 16 36 13 48 10 3C286 15 21 21 62.6 239.8 1.8 42.0 71 1 1 411 13 48 10 13 53 39 --- 15 26 51 61.8 241.7 1.9 43.0 329 F 1 416 13 48 33 13 55 46 3C273 15 28 58 29.9 234.4 3.0 32.9 57 1 1 416 13 55 46 14 01 15 --- 15 34 28 29.2 235.7 3.1 33.5 329 F 1 422 13 56 09 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/v18cm-128-8-1.set Matches group v20cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 9 Station: VLBA_BR Total bit rate: 128 Format: VLBA1:4 Bits per sample: 1 Sample rate: 16.000 Number of channels: 8 Speedup factor: 2.00 Disk used to record data. 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 9 Setup file default. Used pcal sets: 1 LO sum= 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 BBC fr= 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 Bandwd= 8.000 8.000 8.000 8.000 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 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off SOURCE LIST -- Monitoring Knot HST-1 in M87 Jet 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) J1229+0203 12 26 33.245836 * 12 29 06.699732 12 29 33.143840 0.30 1226+023 02 19 43.30565 * 02 03 08.59815 02 00 15.15577 0.20 * 3C273 /home/filehost/cwalker/sched/catalogs/sources.vlba 3C273B VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro J1229+02 0.640 scan hours, 24.774 baseline hours above horizon. J1230+1223 12 28 17.569279 * 12 30 49.423381 12 31 15.698794 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 20 32.28262 0.20 * 3C274 /home/filehost/cwalker/sched/catalogs/sources.vlba J1230+12 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 5.984 scan hours, 242.835 baseline hours above horizon. J1331+3030 13 28 49.657756 * 13 31 08.288048 13 31 32.323758 0.37 1328+307 30 45 58.64060 * 30 30 32.95924 30 27 41.74877 0.47 * 3C286 /home/filehost/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.640 scan hours, 27.151 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) 3C273 137.9 3C274 139.7 3C286 125.5 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