COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: Monitoring Knot HST-1 in M87 Jet Exp. Code: BH126C Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: D.E. Harris Address: MS-3, CfA, 60 Garden St Cambridge, MA 02138 U.S.A. Phone: 617 495 7148 EMAIL: harris@cfa.harvard.edu Fax: 617 495 7356 Phone during observation: 617 495 7148 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: BH126 SUMMARY (as of Dec 6, 2004): We request within 1 week to 10 days coordination with planned Chandra X-ray Observatory observations at 4 epochs: 1. 2Jan05 (VLBA 90cm, 90/50cm, L band for 8 hrs/run = BH126 A, B, C). Coordinated also with VLA observation AH862 on 31Dec04. 2. 20Apr05 or later (VLBA 90cm, 90/50cm, L band for 8 hrs/run = BH126 D, E, F). Coordinated also with VLA observation AH862. 3. 1Jun05 (VLBA L-band for 8 hrs = BH126 G). 4. 6Aug05 (VLBA L band for 8 hrs = BH126 H). -------------------------------------------------------------------- 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]: Within 1 week to 10 days of 2Jan05 (Chandra Obs) and 31Dec04 (VLA Obs) Excluded dates plus reason [none]: Too close to Sun. Preferred interval between segments in days [none]: 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. 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) ---------------------------------------------------------------------------------------- --- Thu 13 Jan 2005 Day 13 --- 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 10 50 3C286 07 43 45 24.1 70.5 -5.8 -46.9 0 1 1 0 08 10 50 08 16 19 --- 07 49 15 25.0 71.4 -5.7 -47.2 329 F 1 2194 08 17 19 3C273 07 50 15 14.9 104.0 -4.7 -40.4 32 1 1 2194 08 17 19 08 22 48 --- 07 55 45 15.8 105.1 -4.6 -40.2 329 F 1 4388 08 23 48 3C274 07 56 45 23.4 97.7 -4.6 -42.6 39 1 1 4388 08 23 48 08 53 43 --- 08 26 45 28.3 103.7 -4.1 -41.6 1795 F 1 16355 08 54 43 3C274 08 27 45 28.5 103.9 -4.1 -41.5 54 1 2 16355 08 54 43 09 24 38 --- 08 57 45 33.3 110.4 -3.6 -39.8 1795 R 1 6878 09 26 38 3C286 08 59 45 36.4 83.1 -4.5 -50.2 95 1 2 6878 09 26 38 09 32 07 --- 09 05 15 37.4 84.0 -4.4 -50.4 329 R 1 4684 09 33 59 3C273 09 07 07 26.7 120.2 -3.4 -35.3 82 1 2 4684 09 33 59 09 39 28 --- 09 12 37 27.5 121.5 -3.3 -34.7 329 R 1 2490 09 40 28 3C274 09 13 37 35.7 114.1 -3.3 -38.6 37 1 3 2490 09 40 28 10 10 23 --- 09 43 37 40.2 121.5 -2.8 -35.7 1795 F 1 9478 10 11 23 3C274 09 44 37 40.3 121.7 -2.8 -35.5 54 1 4 9478 10 11 23 10 41 18 --- 10 14 37 44.4 130.0 -2.3 -31.6 1795 R 1 13755 10 43 18 3C286 10 16 37 49.2 97.5 -3.2 -50.2 92 1 4 13755 10 43 18 10 48 47 --- 10 22 07 50.1 98.7 -3.2 -50.0 329 R 1 11561 10 49 55 3C273 10 23 16 36.5 139.5 -2.1 -25.7 35 1 4 11561 10 49 55 10 55 25 --- 10 28 46 37.1 141.0 -2.0 -24.9 329 R 1 9367 10 56 24 3C274 10 29 46 46.2 134.5 -2.0 -29.2 36 1 5 9367 10 56 24 11 26 19 --- 10 59 46 49.5 144.3 -1.5 -23.5 1795 F 1 2600 11 27 19 3C274 11 00 46 49.6 144.7 -1.5 -23.3 54 1 5 2600 11 27 19 11 57 14 --- 11 30 46 52.1 155.6 -1.0 -16.4 1795 F 1 14567 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. 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) ---------------------------------------------------------------------------------------- --- Thu 13 Jan 2005 Day 13 --- 11 59 14 3C286 11 32 46 61.4 117.2 -2.0 -43.5 88 1 5 14567 11 59 14 12 04 43 --- 11 38 16 62.2 119.0 -1.9 -42.6 329 F 1 16761 12 05 55 3C273 11 39 28 42.7 162.9 -0.8 -11.3 27 1 6 16761 12 05 55 12 11 24 --- 11 44 58 42.9 164.8 -0.7 -10.1 329 R 1 16245 12 12 24 3C274 11 45 58 53.0 161.5 -0.8 -12.5 34 1 6 16245 12 12 24 12 42 19 --- 12 15 58 54.1 173.7 -0.3 -4.3 1795 R 1 4277 12 43 19 3C274 12 16 58 54.1 174.1 -0.2 -4.0 54 1 7 4277 12 43 19 13 13 14 --- 12 46 58 54.1 186.6 0.3 4.5 1795 F 1 7690 13 15 14 3C286 12 48 58 70.6 151.5 -0.7 -21.7 81 1 7 7690 13 15 14 13 20 43 --- 12 54 28 71.0 154.9 -0.6 -19.2 329 F 1 9884 13 21 53 3C273 12 55 39 43.5 189.1 0.4 6.0 9 1 7 9884 13 21 53 13 27 22 --- 13 01 09 43.4 191.0 0.5 7.3 329 F 1 12078 13 28 22 3C274 13 02 09 53.6 192.9 0.5 8.8 33 1 8 12078 13 28 22 13 58 17 --- 13 32 09 52.0 204.7 1.0 16.6 1795 R 1 11155 13 59 17 3C274 13 33 09 52.0 205.1 1.0 16.8 54 1 9 11155 13 59 17 14 29 12 --- 14 03 09 49.4 216.0 1.5 23.6 1795 F 1 812 14 31 12 3C286 14 05 09 71.2 203.1 0.6 17.7 70 1 9 812 14 31 12 14 36 41 --- 14 10 39 70.8 206.6 0.7 20.3 329 F 1 3006 14 37 51 3C273 14 11 49 38.9 213.7 1.7 21.8 0 1 9 3006 14 37 51 14 43 20 --- 14 17 19 38.4 215.3 1.8 22.7 329 F 1 5200 14 44 20 3C274 14 18 19 47.8 221.0 1.8 26.6 35 1 9 5200 14 44 20 15 14 15 --- 14 48 19 44.3 230.2 2.3 31.7 1795 F 1 17168 15 15 15 3C274 14 49 19 44.1 230.5 2.3 31.8 54 1 10 17168 15 15 15 15 45 10 --- 15 19 19 40.1 238.7 2.8 35.7 1795 R 1 5200 15 47 11 3C286 15 21 21 62.6 239.9 1.8 42.1 70 1 10 5200 15 47 11 15 52 40 --- 15 26 51 61.8 241.8 1.9 43.0 329 R 1 3006 15 54 47 3C273 15 28 58 29.9 234.5 3.0 32.9 57 1 10 3006 15 54 47 16 00 16 --- 15 34 28 29.2 235.8 3.1 33.5 329 R 1 812 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: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 1 Sample rate: 16.000 Number of channels: 8 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= 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: 1 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_auto 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) (B1950) (J2000) (Date) J1229+0203 12 26 33.245833 * 12 29 06.699729 12 29 22.103514 1226+023 02 19 43.30569 * 02 03 08.59819 02 01 26.13451 * 3C273 /home/filehost/cwalker/sched/catalogs/sources.vlba 3C273B ICRF - Ext.1 Source - 1998 IERS Annual Report J1229+02 0.640 scan hours, 24.774 baseline hours above horizon. J1230+1223 12 28 17.569280 * 12 30 49.423382 12 31 04.755092 1228+126 12 40 01.74911 * 12 23 28.04393 12 21 42.11430 * 3C274 /home/filehost/cwalker/sched/catalogs/sources.vlba J1230+12 ICRF - Ext.1 Source - 1998 IERS Annual Report 5.984 scan hours, 242.835 baseline hours above horizon. J1331+3030 13 28 49.657691 * 13 31 08.287984 13 31 22.113848 1328+307 30 45 58.64021 * 30 30 32.95885 30 28 46.07880 * 3C286 /home/filehost/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 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 107.4 3C274 110.6 3C286 102.7 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