COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: M87 multi-epoch at 90cm Exp. Code: BJ046B 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_HN (Code Hn ) 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) ---------------------------------------------------------------------------------------- --- Tue 3 Feb 2004 Day 34 --- 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 04 51 35 3C147 08 54 32 56.8 -61.0 3.2 83.3 0 1 1 0 04 51 15 04 56 34 --- 08 59 32 56.0 -60.8 3.3 82.5 299 F 1 2128 04 58 34 3C147 09 01 32 55.7 -60.7 3.3 82.2 113 1 1 2128 04 58 14 05 03 33 --- 09 06 32 54.9 -60.5 3.4 81.4 299 F 1 4256 05 05 32 3C147 09 08 32 54.6 -60.4 3.4 81.1 113 1 1 4256 05 05 12 05 10 32 --- 09 13 32 53.8 -60.2 3.5 80.3 299 F 1 6384 05 12 45 1148-001 09 15 45 34.4 130.6 -2.6 -33.8 0 1 1 6384 05 12 25 05 17 44 --- 09 20 45 35.1 131.8 -2.5 -33.1 299 F 1 8511 05 18 44 3C274 09 21 45 39.1 112.3 -3.2 -43.9 41 1 2 8511 05 18 24 05 48 39 --- 09 51 45 44.0 119.5 -2.7 -40.7 1795 R 1 14588 05 49 39 3C274 09 52 45 44.2 119.8 -2.6 -40.6 54 1 2 14588 05 49 19 06 19 34 --- 10 22 45 48.8 128.1 -2.1 -36.1 1795 R 1 2487 06 21 37 3C147 10 24 49 42.7 304.2 4.7 69.9 0 1 2 2487 06 21 17 06 26 36 --- 10 29 49 42.0 304.6 4.8 69.2 299 R 1 360 06 28 48 1148-001 10 32 01 43.2 152.4 -1.3 -19.8 24 1 3 360 06 28 28 06 33 47 --- 10 37 01 43.6 154.1 -1.2 -18.7 299 F 1 2487 06 34 47 3C274 10 38 01 50.9 132.9 -1.9 -33.3 39 1 3 2487 06 34 27 07 04 42 --- 11 08 01 54.6 143.4 -1.4 -26.6 1795 F 1 14588 07 05 42 3C274 11 09 01 54.7 143.7 -1.4 -26.3 54 1 4 14588 07 05 22 07 35 37 --- 11 39 01 57.4 155.9 -0.9 -17.8 1795 R 1 8511 07 37 42 3C147 11 41 06 31.6 310.8 6.0 59.3 16 1 4 8511 07 37 22 07 42 41 --- 11 46 06 30.9 311.3 6.1 58.6 299 R 1 6384 07 44 56 1148-001 11 48 22 46.6 179.1 0.0 -0.7 41 1 4 6384 07 44 36 07 49 56 --- 11 53 22 46.6 180.9 0.0 0.6 299 R 1 4256 07 50 55 3C274 11 54 22 58.4 162.7 -0.6 -12.9 30 1 5 4256 07 50 35 08 20 50 --- 12 24 22 59.4 176.8 -0.1 -2.4 1795 F 1 7845 Schedule for VLBA_HN (Code Hn ) 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) ---------------------------------------------------------------------------------------- --- Tue 3 Feb 2004 Day 34 --- 08 21 50 3C274 12 25 22 59.4 177.3 -0.1 -2.0 54 1 6 7845 08 21 30 08 51 45 --- 12 55 22 59.0 191.6 0.4 8.7 1795 R 1 15255 08 53 49 3C147 12 57 25 21.7 318.9 7.2 48.3 32 1 6 15255 08 53 29 08 58 48 --- 13 02 25 21.1 319.5 7.3 47.6 299 R 1 13127 09 01 10 1148-001 13 04 48 43.6 205.9 1.2 18.7 60 1 6 13127 09 00 50 09 06 09 --- 13 09 48 43.2 207.5 1.3 19.8 299 R 1 10999 09 07 09 3C274 13 10 48 58.2 198.7 0.7 13.9 24 1 7 10999 09 06 49 09 37 04 --- 13 40 48 55.9 211.5 1.2 23.0 1795 F 1 1102 09 38 04 3C274 13 41 48 55.8 211.9 1.2 23.3 54 1 7 1102 09 37 44 10 07 59 --- 14 11 48 52.5 223.0 1.7 30.8 1795 F 1 13202 10 10 01 3C147 14 13 50 13.4 328.4 8.5 36.5 38 1 7 13202 10 09 41 10 15 00 --- 14 18 50 12.9 329.1 8.6 35.7 299 F 1 15330 10 16 44 1148-001 14 20 35 35.2 228.0 2.5 33.0 31 1 7 15330 10 16 24 10 21 43 --- 14 25 35 34.5 229.3 2.6 33.7 299 F 1 17458 10 22 43 3C274 14 26 35 50.5 227.9 1.9 33.8 22 1 8 17458 10 22 23 10 52 38 --- 14 56 35 46.2 236.8 2.4 38.9 1795 R 1 5357 10 53 38 3C274 14 57 35 46.0 237.1 2.4 39.0 54 1 9 5357 10 53 18 11 23 33 --- 15 27 35 41.2 244.8 2.9 42.7 1795 F 1 6743 11 32 29 1148-001 15 36 32 23.6 245.3 3.8 41.7 495 1 9 6743 11 32 09 11 37 29 --- 15 41 32 22.8 246.4 3.8 42.1 299 F 1 8871 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 55.605195 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 26.49724 * 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 56.694991 * 1148-001 -00 07 13.16375 *-00 23 54.20490 -00 25 17.14744 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 02.023923 1228+126 12 40 01.74911 * 12 23 28.04393 12 22 01.08304 * 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 127.7 1148-001 135.7 3C274 130.1 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