COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: Monitoring Knot HST-1 in M87 Jet Exp. Code: BH151A 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 BH151A. 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]: This epoch (A) between Jan 30 and Feb 3 2008. Excluded dates plus reason [none]: Preferred interval between segments in days [none]: Epochs B and C should follow by 5+/- 2 days and 10 +/-2 days. Special conditions (e.g., a series with different spacings in time) [See the comments at the top.]: Schedule for VLBA_MK (Code Mk ) 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 ---------------------------------------------------------------------------------------- --- Sat 2 Feb 2008 Day 33 --- 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 08 55 36 3C274 07 21 31 15.8 82.3 -5.2 -72.6 0 1 1 0 08 55 36 09 25 31 --- 07 51 31 22.8 84.5 -4.7 -73.5 1795 F 1 29 08 55 59 09 27 31 3C286 07 53 31 14.4 62.4 -5.6 -75.3 97 1 1 29 09 27 31 09 33 00 --- 07 59 01 15.6 62.7 -5.5 -75.9 329 F 1 34 09 27 54 09 34 09 3C273 08 00 10 22.0 96.0 -4.5 -69.4 40 1 1 34 09 34 09 09 39 38 --- 08 05 40 23.3 96.6 -4.4 -69.3 329 F 1 40 09 34 32 09 40 38 3C274 08 06 40 26.4 85.7 -4.4 -73.8 47 1 1 40 09 40 38 10 10 33 --- 08 36 40 33.4 88.0 -3.9 -74.3 1795 F 1 69 09 41 01 10 11 32 3C274 08 37 40 33.6 88.1 -3.9 -74.3 54 1 1 69 10 11 32 10 41 28 --- 09 07 40 40.7 90.6 -3.4 -74.4 1795 F 1 97 10 11 55 10 43 27 3C286 09 09 40 30.6 65.6 -4.4 -83.7 93 1 1 97 10 43 27 10 48 56 --- 09 15 10 31.7 65.7 -4.3 -84.4 329 F 1 103 10 43 50 10 50 08 3C273 09 16 23 39.6 104.5 -3.2 -65.7 40 1 1 103 10 50 08 10 55 37 --- 09 21 53 40.9 105.2 -3.1 -65.3 329 F 1 108 10 50 31 10 56 37 3C274 09 22 53 44.3 91.9 -3.1 -74.3 45 1 1 108 10 56 37 11 26 32 --- 09 52 53 51.3 94.9 -2.6 -73.6 1795 F 1 137 10 57 00 11 27 32 3C274 09 53 53 51.6 95.1 -2.6 -73.6 54 1 1 137 11 27 32 11 57 27 --- 10 23 53 58.6 98.8 -2.1 -72.1 1795 F 1 166 11 27 55 11 59 27 3C286 10 25 53 47.0 66.2 -3.1 -93.1 90 1 1 166 11 59 27 12 04 56 --- 10 31 23 48.1 66.1 -3.0 -93.9 329 F 1 171 11 59 50 12 06 06 3C273 10 32 33 56.3 118.3 -1.9 -56.0 30 1 1 171 12 06 06 12 11 35 --- 10 38 03 57.5 119.7 -1.9 -54.9 329 F 1 177 12 06 29 12 12 35 3C274 10 39 03 62.1 101.2 -1.9 -70.9 42 1 1 177 12 12 35 12 42 30 --- 11 09 03 68.9 107.6 -1.4 -66.6 1795 F 1 206 12 12 58 Schedule for VLBA_MK (Code Mk ) 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 ---------------------------------------------------------------------------------------- --- Sat 2 Feb 2008 Day 33 --- 12 43 30 3C274 11 10 03 69.1 107.9 -1.4 -66.4 54 1 1 206 12 43 30 13 13 25 --- 11 40 03 75.6 119.3 -0.9 -57.1 1795 F 1 235 12 43 53 13 15 25 3C286 11 42 03 63.1 61.2 -1.8 -106.9 75 1 1 235 13 15 25 13 20 54 --- 11 47 33 64.2 60.4 -1.7 -108.3 329 F 1 240 13 15 48 13 22 04 3C273 11 48 43 69.6 149.5 -0.7 -28.6 4 1 1 240 13 22 04 13 27 33 --- 11 54 13 70.2 153.0 -0.6 -25.3 329 F 1 245 13 22 27 13 28 33 3C274 11 55 13 78.6 129.4 -0.6 -48.1 37 1 1 245 13 28 33 13 58 28 --- 12 25 13 82.4 168.8 -0.1 -10.8 1795 F 1 274 13 28 56 13 59 28 3C274 12 26 13 82.4 170.6 -0.1 -9.0 53 1 1 274 13 59 28 14 29 23 --- 12 56 13 80.4 219.7 0.4 38.0 1795 F 1 303 13 59 51 14 31 25 3C286 12 58 15 77.0 393.6 -0.6 -142.9 0 1 1 303 14 31 25 14 36 54 --- 13 03 45 77.6 389.1 -0.5 -147.9 329 F 1 308 14 31 48 14 39 01 3C273 13 05 53 70.1 207.6 0.6 25.9 0 1 1 308 14 39 01 14 44 30 --- 13 11 23 69.5 211.2 0.7 29.2 329 F 1 314 14 39 24 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: 10 Station: VLBA_MK 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: 10 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 32.868518 0.30 1226+023 02 19 43.30565 * 02 03 08.59815 02 00 16.72367 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 15.415507 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 20 33.36014 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 31.971397 0.37 1328+307 30 45 58.64060 * 30 30 32.95924 30 27 42.38136 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 126.8 3C274 129.2 3C286 117.6 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