COVER INFORMATION Station: VLBA_PT (Code Pt ) 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_PT (Code Pt ) 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 06 30 00 72.2 -25.5 0.8 146.5 0 1 1 0 04 51 15 04 56 34 --- 06 35 00 71.7 -27.6 0.9 143.6 299 F 1 2128 04 58 34 3C147 06 37 00 71.6 -28.4 0.9 142.4 114 1 1 2128 04 58 14 05 03 33 --- 06 42 00 71.0 -30.4 1.0 139.6 299 F 1 4256 05 05 32 3C147 06 44 00 70.8 -31.1 1.0 138.5 114 1 1 4256 05 05 12 05 10 32 --- 06 49 00 70.3 -32.9 1.1 135.9 299 F 1 6384 05 18 44 3C274 06 57 14 12.3 83.3 -5.6 -57.1 370 1 2 6384 05 18 24 05 48 39 --- 07 27 14 18.5 87.4 -5.1 -57.7 1795 R 1 16716 05 49 39 3C274 07 28 14 18.7 87.5 -5.0 -57.7 54 1 2 16716 05 49 19 06 19 34 --- 07 58 14 24.9 91.7 -4.5 -57.7 1795 R 1 4615 06 21 37 3C147 08 00 17 60.5 -47.6 2.3 108.7 24 1 2 4615 06 21 17 06 26 36 --- 08 05 17 59.8 -48.2 2.4 107.4 299 R 1 2487 06 28 48 1148-001 08 07 29 27.3 111.3 -3.7 -50.3 19 1 2 2487 06 28 28 06 33 47 --- 08 12 29 28.3 112.2 -3.6 -49.9 299 R 1 360 06 34 47 3C274 08 13 29 28.0 94.0 -4.3 -57.5 42 1 3 360 06 34 27 07 04 42 --- 08 43 29 34.2 98.6 -3.8 -56.7 1795 F 1 12460 07 05 42 3C274 08 44 29 34.4 98.8 -3.8 -56.7 54 1 4 12460 07 05 22 07 35 37 --- 09 14 29 40.4 103.9 -3.3 -55.2 1795 R 1 10639 07 37 42 3C147 09 16 35 48.4 -51.3 3.6 91.1 16 1 4 10639 07 37 22 07 42 41 --- 09 21 35 47.6 -51.3 3.6 90.2 299 R 1 8511 07 44 56 1148-001 09 23 50 41.1 127.4 -2.5 -41.0 10 1 4 8511 07 44 36 07 49 56 --- 09 28 50 41.9 128.6 -2.4 -40.2 299 R 1 6384 07 50 55 3C274 09 29 50 43.5 106.8 -3.0 -54.0 39 1 5 6384 07 50 35 08 20 50 --- 09 59 50 49.3 113.3 -2.5 -51.0 1795 F 1 5717 08 21 50 3C274 10 00 50 49.5 113.6 -2.5 -50.8 54 1 6 5717 08 21 30 08 51 45 --- 10 30 50 55.0 121.5 -2.0 -46.2 1795 R 1 17382 Schedule for VLBA_PT (Code Pt ) 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 53 49 3C147 10 32 54 36.2 -49.7 4.8 77.6 3 1 6 17382 08 53 29 08 58 48 --- 10 37 54 35.4 -49.4 4.9 76.8 299 R 1 15255 09 01 10 1148-001 10 40 16 51.5 150.8 -1.2 -23.8 3 1 6 15255 09 00 50 09 06 09 --- 10 45 16 52.0 152.7 -1.1 -22.3 299 R 1 13127 09 07 09 3C274 10 46 16 57.6 126.3 -1.7 -42.9 36 1 6 13127 09 06 49 09 37 04 --- 11 16 16 62.3 137.7 -1.2 -34.7 1795 R 1 1026 09 38 04 3C274 11 17 16 62.4 138.2 -1.2 -34.3 54 1 7 1026 09 37 44 10 07 59 --- 11 47 16 65.9 153.0 -0.7 -22.6 1795 F 1 11074 10 10 01 3C147 11 49 18 24.6 314.9 6.1 65.2 8 1 7 11074 10 09 41 10 15 00 --- 11 54 18 23.9 315.2 6.2 64.4 299 F 1 13202 10 16 44 1148-001 11 56 03 55.3 182.2 0.1 1.8 10 1 7 13202 10 16 24 10 21 43 --- 12 01 03 55.2 184.4 0.2 3.7 299 F 1 15330 10 22 43 3C274 12 02 03 67.1 161.5 -0.5 -15.5 30 1 8 15330 10 22 23 10 52 38 --- 12 32 03 68.1 180.7 0.0 0.6 1795 R 1 7769 10 53 38 3C274 12 33 03 68.1 181.3 0.0 1.1 54 1 9 7769 10 53 18 11 23 33 --- 13 03 03 66.9 200.3 0.5 17.0 1795 F 1 4331 11 25 33 3C147 13 05 03 14.1 321.5 7.4 52.9 8 1 9 4331 11 25 13 11 30 32 --- 13 10 03 13.5 322.0 7.5 52.1 299 F 1 6459 11 32 29 1148-001 13 12 01 50.4 212.9 1.4 26.7 38 1 9 6459 11 32 09 11 37 29 --- 13 17 01 49.8 214.7 1.4 28.0 299 F 1 8587 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