COVER INFORMATION Station: VLBA_HN (Code Hn ) 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_HN (Code Hn ) 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 06 55 04 3C286 10 54 32 56.5 98.7 -2.6 -57.1 0 1 1 0 06 55 04 07 00 33 --- 11 00 02 57.5 99.9 -2.5 -56.8 329 F 1 5 06 55 27 07 01 33 3C273 11 01 02 44.6 148.1 -1.5 -22.8 22 1 1 5 07 01 33 07 07 02 --- 11 06 32 45.1 149.9 -1.4 -21.6 329 F 1 11 07 01 56 07 08 01 3C274 11 07 32 54.5 143.1 -1.4 -26.7 35 1 1 11 07 08 01 07 37 57 --- 11 37 32 57.3 155.2 -0.9 -18.3 1795 F 1 40 07 08 24 07 38 56 3C274 11 38 32 57.3 155.6 -0.9 -18.0 54 1 1 40 07 38 56 08 08 51 --- 12 08 32 59.0 169.2 -0.4 -8.1 1795 F 1 69 07 39 19 08 10 51 3C286 12 10 32 69.6 121.1 -1.4 -46.7 82 1 1 69 08 10 51 08 16 20 --- 12 16 02 70.5 123.5 -1.3 -45.1 329 F 1 74 08 11 14 08 18 12 3C273 12 17 54 49.0 175.6 -0.2 -3.2 63 1 1 74 08 18 12 08 23 41 --- 12 23 24 49.0 177.7 -0.1 -1.7 329 F 1 79 08 18 35 08 24 41 3C274 12 24 24 59.4 176.7 -0.1 -2.5 33 1 1 79 08 24 41 08 54 36 --- 12 54 24 59.0 191.0 0.4 8.2 1795 F 1 108 08 25 04 08 55 36 3C274 12 55 24 59.0 191.5 0.4 8.6 54 1 1 108 08 55 36 09 25 31 --- 13 25 24 57.2 205.0 0.9 18.5 1795 F 1 137 08 55 59 09 27 31 3C286 13 27 24 77.5 175.9 -0.1 -3.5 73 1 1 137 09 27 31 09 33 00 --- 13 32 54 77.5 181.4 0.0 1.2 329 F 1 142 09 27 54 09 34 09 3C273 13 34 03 46.6 203.8 1.1 17.2 1 1 1 142 09 34 09 09 39 38 --- 13 39 33 46.2 205.7 1.2 18.5 329 F 1 148 09 34 32 09 40 38 3C274 13 40 33 55.9 211.3 1.2 22.9 34 1 1 148 09 40 38 10 10 33 --- 14 10 33 52.6 222.5 1.7 30.4 1795 F 1 177 09 41 01 10 11 32 3C274 14 11 33 52.5 222.9 1.7 30.6 54 1 1 177 10 11 32 10 41 28 --- 14 41 33 48.4 232.5 2.2 36.5 1795 F 1 206 10 11 55 Schedule for VLBA_HN (Code Hn ) 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 --- 10 43 27 3C286 14 43 33 71.0 234.9 1.2 44.0 69 1 1 206 10 43 27 10 48 56 --- 14 49 03 70.2 237.4 1.3 45.7 329 F 1 211 10 43 50 10 50 08 3C273 14 50 15 38.5 227.3 2.3 32.6 3 1 1 211 10 50 08 10 55 37 --- 14 55 45 37.7 228.8 2.4 33.4 329 F 1 216 10 50 31 10 56 37 3C274 14 56 45 46.2 236.8 2.4 38.8 37 1 1 216 10 56 37 11 26 32 --- 15 26 45 41.4 244.5 2.9 42.6 1795 F 1 245 10 57 00 11 27 32 3C274 15 27 45 41.2 244.7 2.9 42.7 54 1 1 245 11 27 32 11 57 27 --- 15 57 45 36.1 251.5 3.4 45.3 1795 F 1 274 11 27 55 11 59 27 3C286 15 59 45 58.1 259.4 2.5 56.6 70 1 1 274 11 59 27 12 04 56 --- 16 05 15 57.1 260.6 2.6 56.9 329 F 1 279 11 59 50 12 06 06 3C273 16 06 26 26.8 245.3 3.6 41.7 4 1 1 279 12 06 06 12 11 35 --- 16 11 56 25.9 246.5 3.7 42.2 329 F 1 285 12 06 29 12 12 35 3C274 16 12 56 33.5 254.6 3.7 46.3 39 1 1 285 12 12 35 12 42 30 --- 16 42 56 28.1 260.4 4.2 47.7 1795 F 1 314 12 12 58 12 43 30 3C274 16 43 56 27.9 260.6 4.2 47.7 54 1 1 314 12 43 30 13 13 25 --- 17 13 56 22.5 266.0 4.7 48.4 1795 F 1 343 12 43 53 13 15 25 3C286 17 15 56 44.2 273.5 3.7 58.0 70 1 1 343 13 15 25 13 20 54 --- 17 21 26 43.2 274.4 3.8 57.9 329 F 1 348 13 15 48 13 22 04 3C273 17 22 36 13.6 259.9 4.9 46.2 5 1 1 348 13 22 04 13 27 33 --- 17 28 06 12.6 260.9 5.0 46.3 329 F 1 353 13 22 27 13 28 33 3C274 17 29 06 19.7 268.7 5.0 48.5 40 1 1 353 13 28 33 13 58 28 --- 17 59 06 14.2 273.8 5.5 48.4 1795 F 1 382 13 28 56 14 31 25 3C286 18 32 08 30.5 284.8 5.0 55.2 1938 1 1 382 14 31 25 14 36 54 --- 18 37 38 29.5 285.6 5.1 54.9 329 F 1 387 14 31 48 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: 2 Station: VLBA_HN 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: 2 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