COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: M87 multi-epoch at 90cm Exp. Code: BJ046P Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Bill Junor Address: ISR-1, Space & Atmospheric Sciences MS D466, LANL, P.O. Box 1663 Los Alamos, New Mexico, 87545 U.S.A. Phone: 505 667 0788 EMAIL: bjunor@lanl.gov Fax: 505 665 7395 Phone during observation: 505 699 7692 Observing mode: 90cm 128-4-2 Notes: COVER LETTER: BJ046 SUMMARY: This project needs about 100 hours times 45 baselines to meet the sensitivity requirements. This time can be accumulated in many separated sessions. One session should be a full track with all antennas to set the calibration and ensure full uv coverage. The other sessions can involve as little as 2 hours and as few as 6 antennas. The sessions can be run as filler in gaps between other projects. This project can be run prior to Feb 1, 2004, to accumulate test data on baselines to MK. These test observations need not be long --- 2--4 hours but should include 3C147, 1148-001 and 3C274. Tropospheric weather is not a problem. The ionosphere will have a bigger impact. 3C274 is mostly a night-time object now. -------------------------------------------------------------------- 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 [6]: 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]: No earlier than Jan 15, 2004. 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 M87 multi-epoch at 90cm 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) ---------------------------------------------------------------------------------------- --- Sun 4 Apr 2004 Day 95 --- Next scan frequencies: 324.49 324.49 332.49 332.49 Next BBC frequencies: 824.49 824.49 832.49 832.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 00 51 44 3C147 05 49 22 77.3 -4.8 0.1 174.1 0 1 1 0 00 51 24 00 56 43 --- 05 54 22 77.2 -8.4 0.2 169.6 299 F 1 2128 00 58 43 3C147 05 56 22 77.1 -9.8 0.2 167.9 113 1 1 2128 00 58 23 01 03 42 --- 06 01 22 76.9 -13.3 0.3 163.5 299 F 1 4256 01 05 42 3C147 06 03 22 76.8 -14.6 0.3 161.8 113 1 1 4256 01 05 22 01 10 41 --- 06 08 22 76.6 -17.9 0.4 157.7 299 F 1 6384 02 21 47 3C147 07 19 39 68.6 -46.3 1.6 116.9 4241 1 1 6384 02 21 27 02 26 46 --- 07 24 39 67.8 -47.2 1.7 115.0 299 F 1 8511 02 28 57 1148-001 07 26 51 18.6 105.4 -4.4 -50.1 24 1 1 8511 02 28 37 02 33 57 --- 07 31 51 19.6 106.3 -4.3 -49.9 299 F 1 10639 02 34 56 3C274 07 32 51 19.7 89.2 -5.0 -54.6 42 1 2 10639 02 34 36 03 04 52 --- 08 02 51 25.6 93.8 -4.5 -54.4 1795 R 1 12460 03 05 51 3C274 08 03 51 25.8 94.0 -4.5 -54.4 54 1 2 12460 03 05 31 03 35 46 --- 08 33 51 31.8 98.9 -4.0 -53.6 1795 R 1 360 03 37 51 3C147 08 35 57 56.8 -53.7 2.9 95.6 17 1 3 360 03 37 31 03 42 51 --- 08 40 57 56.0 -53.8 3.0 94.5 299 F 1 2487 03 45 06 1148-001 08 43 12 32.6 119.8 -3.1 -43.7 13 1 3 2487 03 44 46 03 50 05 --- 08 48 12 33.5 120.9 -3.0 -43.1 299 F 1 4615 03 51 05 3C274 08 49 12 34.8 101.6 -3.7 -53.0 41 1 3 4615 03 50 45 04 21 00 --- 09 19 12 40.6 107.2 -3.2 -51.1 1795 F 1 16716 04 22 00 3C274 09 20 12 40.8 107.5 -3.2 -51.0 54 1 4 16716 04 21 40 04 51 55 --- 09 50 12 46.3 114.0 -2.7 -48.1 1795 R 1 6384 04 53 58 3C147 09 52 16 44.5 -53.2 4.2 81.3 6 1 4 6384 04 53 38 04 58 57 --- 09 57 16 43.7 -53.0 4.2 80.5 299 R 1 4256 05 01 19 1148-001 09 59 38 44.4 139.2 -1.9 -31.3 8 1 4 4256 05 00 59 05 06 19 --- 10 04 38 45.0 140.7 -1.8 -30.3 299 R 1 2128 Schedule for VLBA_OV (Code Ov ) Page 3 M87 multi-epoch at 90cm 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) ---------------------------------------------------------------------------------------- --- Sun 4 Apr 2004 Day 95 --- 05 07 18 3C274 10 05 38 49.1 117.8 -2.4 -46.1 39 1 5 2128 05 06 58 05 37 14 --- 10 35 38 54.2 126.4 -1.9 -41.0 1795 F 1 9973 05 38 13 3C274 10 36 38 54.3 126.7 -1.9 -40.8 54 1 6 9973 05 37 53 06 08 08 --- 11 06 38 58.8 137.3 -1.4 -33.6 1795 R 1 13127 06 10 10 3C147 11 08 40 32.6 310.8 5.4 69.2 0 1 6 13127 06 09 50 06 15 09 --- 11 13 40 31.9 311.2 5.5 68.4 299 R 1 10999 06 16 54 1148-001 11 15 25 51.5 165.6 -0.6 -11.4 1 1 6 10999 06 16 34 06 21 53 --- 11 20 25 51.7 167.6 -0.5 -9.8 299 R 1 8871 06 22 53 3C274 11 21 25 60.7 143.4 -1.2 -29.1 36 1 7 8871 06 22 33 06 52 48 --- 11 51 25 63.6 157.8 -0.7 -17.9 1795 F 1 3230 06 53 48 3C274 11 52 25 63.7 158.3 -0.6 -17.5 54 1 7 3230 06 53 28 07 23 43 --- 12 22 25 65.1 175.0 -0.1 -4.1 1795 F 1 15330 07 25 42 3C147 12 24 25 21.7 317.0 6.7 57.5 19 1 7 15330 07 25 22 07 30 42 --- 12 29 25 21.0 317.4 6.8 56.7 299 F 1 17458 07 32 39 1148-001 12 31 23 51.2 196.3 0.7 12.9 31 1 8 17458 07 32 19 07 37 38 --- 12 36 23 50.9 198.2 0.8 14.4 299 R 1 15330 07 38 38 3C274 12 37 23 65.1 183.7 0.1 3.0 25 1 8 15330 07 38 18 08 08 33 --- 13 07 23 63.8 200.5 0.6 16.6 1795 R 1 3230 08 09 33 3C274 13 08 23 63.8 201.0 0.6 17.0 54 1 9 3230 08 09 13 08 39 28 --- 13 38 23 60.9 215.6 1.1 28.3 1795 F 1 8871 08 40 28 1148-001 13 39 23 44.8 219.9 1.8 30.7 22 1 9 8871 08 40 08 08 45 27 --- 13 44 23 44.1 221.4 1.9 31.8 299 F 1 10999 08 46 27 3C274 13 45 23 60.1 218.6 1.2 30.6 22 1 10 10999 08 46 07 09 16 22 --- 14 15 23 55.9 230.0 1.7 38.6 1795 R 1 12101 09 17 22 3C274 14 16 23 55.8 230.3 1.8 38.9 54 1 10 12101 09 17 02 09 47 17 --- 14 46 23 50.9 239.5 2.3 44.6 1795 R 1 0 09 48 17 1148-001 14 47 23 34.6 237.7 2.9 42.3 21 1 11 0 09 47 57 09 53 16 --- 14 52 23 33.7 238.8 3.0 42.9 299 F 1 2128 Schedule for VLBA_OV (Code Ov ) Page 4 M87 multi-epoch at 90cm 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) ---------------------------------------------------------------------------------------- --- Sun 4 Apr 2004 Day 95 --- 09 54 16 3C274 14 53 23 49.6 241.4 2.4 45.7 22 1 11 2128 09 53 56 10 24 11 --- 15 23 23 44.2 248.6 2.9 49.4 1795 F 1 14228 10 25 11 3C274 15 24 23 44.0 248.8 2.9 49.5 54 1 12 14228 10 24 51 10 55 06 --- 15 54 23 38.4 255.0 3.4 51.9 1795 R 1 8871 10 56 06 1148-001 15 55 23 22.3 251.2 4.1 48.9 22 1 12 8871 10 55 46 11 01 05 --- 16 00 23 21.4 252.1 4.2 49.2 299 R 1 6743 11 02 05 3C274 16 01 23 37.0 256.3 3.5 52.4 23 1 13 6743 11 01 45 11 32 00 --- 16 31 23 31.2 261.7 4.0 53.8 1795 F 1 5357 11 33 00 3C274 16 32 23 31.0 261.8 4.0 53.8 54 1 13 5357 11 32 40 12 02 55 --- 17 02 23 25.0 266.7 4.5 54.5 1795 F 1 17458 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bw051.set Matches group v5090n in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 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= -500.00 -500.00 -500.00 -500.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = 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= 324.49 324.49 332.49 332.49 BBC fr= 824.49 824.49 832.49 832.49 Bandwd= 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 S1 S3 S1 S2 S3 S4 PCALXB2= S2 S4 S2 S4 M1 M2 M3 M4 PCALFR1= 510 510 6510 6510 0 0 0 0 PCALFR2= 510 510 6510 6510 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_auto SOURCE LIST -- M87 multi-epoch at 90cm 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). Source Source position (RA/Dec) (B1950) (J2000) (Date) J0542+4951 05 38 43.517539 * 05 42 36.137917 05 42 54.158740 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 29.16680 * 3C147 /home/filehost/cwalker/sched/catalogs/sources.vlba J0542+49 ICRF - Ext.1 Source - 1998 IERS Annual Report J1150-0023 11 48 10.124953 * 11 50 43.870762 11 50 57.424044 * 1148-001 -00 07 13.16375 *-00 23 54.20490 -00 25 22.34633 J1150-00 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report J1230+1223 12 28 17.569280 * 12 30 49.423382 12 31 03.005606 1228+126 12 40 01.74911 * 12 23 28.04393 12 22 00.00806 * 3C274 /home/filehost/cwalker/sched/catalogs/sources.vlba J1230+12 ICRF - Ext.1 Source - 1998 IERS Annual Report 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 74.0 1148-001 163.2 3C274 160.9 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