COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Monitoring Knot HST-1 in M87 Jet Exp. Code: BH126B 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: 9050cm 64-8-2 Notes: 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 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_OV (Code Ov ) 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) ---------------------------------------------------------------------------------------- --- Wed 29 Dec 2004 Day 364 --- Next scan frequencies: 326.49 326.49 328.49 328.49 608.99 608.99 610.99 610.99 Next BBC frequencies: 826.49 826.49 828.49 828.49 608.99 608.99 610.99 610.99 Next scan bandwidths: 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 09 09 49 3C147 07 49 22 64.1 -50.7 2.1 107.1 0 1 1 0 09 09 29 09 14 48 --- 07 54 22 63.4 -51.2 2.2 105.7 299 F 1 2128 09 17 18 1148-001 07 56 52 24.3 110.7 -3.9 -48.2 36 1 1 2128 09 16 58 09 22 17 --- 08 01 52 25.2 111.6 -3.8 -47.8 299 F 1 4256 09 23 17 3C274 08 02 52 25.6 93.8 -4.5 -54.4 42 1 1 4256 09 22 57 09 53 12 --- 08 32 52 31.6 98.7 -4.0 -53.7 1795 F 1 16356 09 54 12 3C274 08 33 52 31.8 98.9 -4.0 -53.6 54 1 2 16356 09 53 52 10 24 07 --- 09 03 52 37.6 104.3 -3.5 -52.2 1795 R 1 6743 10 26 12 3C147 09 05 58 51.9 -54.1 3.4 89.5 13 1 2 6743 10 25 52 10 31 11 --- 09 10 58 51.1 -54.0 3.5 88.6 299 R 1 4615 10 33 29 1148-001 09 13 16 37.6 126.7 -2.6 -39.7 12 1 2 4615 10 33 09 10 38 29 --- 09 18 16 38.4 127.9 -2.5 -38.9 299 R 1 2487 10 39 29 3C274 09 19 16 40.6 107.3 -3.2 -51.1 40 1 1 2487 10 39 09 11 09 24 --- 09 49 16 46.2 113.8 -2.7 -48.2 1795 F 2 9613 11 10 23 3C274 09 50 16 46.4 114.0 -2.7 -48.1 54 1 2 9613 11 10 03 11 40 19 --- 10 20 16 51.6 121.8 -2.2 -43.9 1795 R 2 13486 11 42 24 3C147 10 22 22 39.7 -51.9 4.7 76.4 4 1 2 13486 11 42 04 11 47 23 --- 10 27 22 39.0 -51.7 4.7 75.6 299 R 2 11358 11 49 52 1148-001 10 29 52 47.9 148.8 -1.4 -24.3 9 1 2 11358 11 49 32 11 54 51 --- 10 34 52 48.4 150.6 -1.3 -23.0 299 R 2 9231 11 55 51 3C274 10 35 52 54.2 126.4 -1.9 -41.0 38 1 3 9231 11 55 31 12 25 46 --- 11 05 52 58.7 137.0 -1.4 -33.8 1795 F 1 2870 12 26 46 3C274 11 06 52 58.8 137.4 -1.4 -33.5 54 1 3 2870 12 26 26 12 56 41 --- 11 36 52 62.3 150.5 -0.9 -23.7 1795 F 1 14971 Schedule for VLBA_OV (Code Ov ) 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) ---------------------------------------------------------------------------------------- --- Wed 29 Dec 2004 Day 364 --- 12 58 41 3C147 11 38 52 28.2 313.0 5.9 64.5 5 1 3 14971 12 58 21 13 03 40 --- 11 43 52 27.4 313.4 6.0 63.8 299 F 1 17099 13 05 29 1148-001 11 45 41 52.3 177.8 -0.1 -1.7 13 1 4 17099 13 05 09 13 10 28 --- 11 50 41 52.3 179.9 0.0 -0.1 299 R 1 15974 13 11 28 3C274 11 51 41 63.6 157.9 -0.7 -17.8 31 1 4 15974 13 11 08 13 41 23 --- 12 21 41 65.0 174.6 -0.2 -4.4 1795 R 1 3873 13 42 23 3C274 12 22 41 65.1 175.1 -0.1 -4.0 54 1 3 3873 13 42 03 14 12 18 --- 12 52 41 64.7 192.4 0.4 10.1 1795 F 2 8228 14 13 18 1148-001 12 53 41 49.6 204.7 1.0 19.4 24 1 3 8228 14 12 58 14 18 17 --- 12 58 41 49.2 206.5 1.1 20.8 299 F 2 10355 14 19 17 3C274 12 59 41 64.3 196.3 0.5 13.2 24 1 4 10355 14 18 57 14 49 12 --- 13 29 41 61.9 211.6 1.0 25.3 1795 R 2 12744 14 50 12 3C274 13 30 41 61.8 212.1 1.0 25.7 54 1 4 12744 14 49 52 15 20 07 --- 14 00 41 58.1 224.7 1.5 35.0 1795 R 2 643 15 21 07 1148-001 14 01 41 41.7 226.3 2.2 35.2 21 1 5 643 15 20 47 15 26 06 --- 14 06 41 41.0 227.7 2.3 36.1 299 F 1 1484 15 27 06 3C274 14 07 41 57.1 227.3 1.6 36.8 22 1 5 1484 15 26 46 15 57 01 --- 14 37 41 52.3 237.0 2.1 43.1 1795 F 1 13585 15 58 01 3C274 14 38 41 52.2 237.3 2.1 43.3 54 1 6 13585 15 57 41 16 27 56 --- 15 08 41 46.9 245.2 2.6 47.7 1795 R 1 9514 16 28 56 1148-001 15 09 41 30.7 242.5 3.3 44.9 21 1 6 9514 16 28 36 16 33 55 --- 15 14 41 29.8 243.5 3.4 45.4 299 R 1 7387 16 34 55 3C274 15 15 41 45.7 246.9 2.7 48.6 22 1 5 7387 16 34 35 17 04 50 --- 15 45 41 40.0 253.3 3.2 51.3 1795 F 2 4714 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: v9050cm Matches group v5090n in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 64 Format: VLBA1:1 Bits per sample: 2 Sample rate: 4.000 Number of channels: 8 Passes/head pos: 2 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= -500.00 -500.00 -500.00 -500.00 0.00 0.00 0.00 0.00 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= U U U U U U U U IF = B D B D B D B D VLBA FE= omit 90cm omit 90cm VLBA Synth= 15.4 15.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 326.49 326.49 328.49 328.49 608.99 608.99 610.99 610.99 BBC fr= 826.49 826.49 828.49 828.49 608.99 608.99 610.99 610.99 Bandwd= 2.000 2.000 2.000 2.000 2.000 2.000 2.000 2.000 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 10 10 1510 1510 1010 1010 PCALFR2= 510 510 10 10 1510 1510 1010 1010 Track assignments are: track1= 2, 6, 10, 14, 18, 22, 26, 30 track2= 3, 7, 11, 15, 19, 23, 27, 31 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) J0542+4951 05 38 43.517539 * 05 42 36.137917 05 43 00.752309 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 24.41708 * 3C147 /home/filehost/cwalker/sched/catalogs/sources.vlba J0542+49 ICRF - Ext.1 Source - 1998 IERS Annual Report 0.582 scan hours, 12.050 baseline hours above horizon. J1150-0023 11 48 10.124953 * 11 50 43.870762 11 50 58.995564 * 1148-001 -00 07 13.16375 *-00 23 54.20490 -00 25 31.95402 J1150-00 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.582 scan hours, 22.023 baseline hours above horizon. J1230+1223 12 28 17.569280 * 12 30 49.423382 12 31 04.228815 1228+126 12 40 01.74911 * 12 23 28.04393 12 21 45.22241 * 3C274 /home/filehost/cwalker/sched/catalogs/sources.vlba J1230+12 ICRF - Ext.1 Source - 1998 IERS Annual Report 6.482 scan hours, 256.797 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) 3C147 151.4 1148-001 100.1 3C274 95.9 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