COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: M87 multi-epoch at 90cm Exp. Code: BJ046R 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_MK (Code Mk ) 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) ---------------------------------------------------------------------------------------- --- Fri 23 Apr 2004 Day 114 --- 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 01 06 47 3C147 04 50 39 58.2 16.0 -0.9 -156.2 0 1 1 0 01 06 27 01 11 46 --- 04 55 39 58.5 14.6 -0.8 -158.4 299 F 1 2128 02 23 05 3C147 06 07 10 59.6 -7.7 0.4 168.7 4258 1 1 2128 02 22 45 02 28 04 --- 06 12 10 59.4 -9.3 0.5 166.4 299 F 1 4256 03 39 12 3C147 07 23 29 53.9 -27.7 1.7 137.3 4249 1 1 4256 03 38 52 03 44 11 --- 07 28 29 53.4 -28.7 1.8 135.5 299 F 1 6384 03 46 33 1148-001 07 30 51 23.2 99.4 -4.3 -68.2 51 1 1 6384 03 46 13 03 51 32 --- 07 35 51 24.4 99.9 -4.3 -68.0 299 F 1 8511 03 52 32 3C274 07 36 51 19.4 83.4 -4.9 -73.1 43 1 2 8511 03 52 12 04 22 27 --- 08 06 51 26.5 85.7 -4.4 -73.8 1795 R 1 14588 04 23 27 3C274 08 07 51 26.7 85.8 -4.4 -73.9 54 1 2 14588 04 23 07 04 53 22 --- 08 37 51 33.7 88.1 -3.9 -74.3 1795 R 1 2487 04 55 24 3C147 08 39 53 43.9 -38.6 2.9 114.3 31 1 2 2487 04 55 04 05 00 23 --- 08 44 53 43.2 -39.1 3.0 113.1 299 R 1 360 05 02 07 1148-001 08 46 38 40.5 108.6 -3.1 -63.1 0 1 3 360 05 01 47 05 07 06 --- 08 51 38 41.7 109.3 -3.0 -62.6 299 F 1 2487 05 08 06 3C274 08 52 38 37.2 89.3 -3.6 -74.4 40 1 3 2487 05 07 46 05 38 01 --- 09 22 38 44.3 91.9 -3.1 -74.3 1795 F 1 14588 05 39 01 3C274 09 23 38 44.5 92.0 -3.1 -74.3 54 1 4 14588 05 38 41 06 08 56 --- 09 53 38 51.6 95.0 -2.6 -73.6 1795 R 1 8511 06 10 56 3C147 09 55 38 32.2 -42.8 4.2 97.2 22 1 4 8511 06 10 36 06 15 55 --- 10 00 38 31.4 -42.9 4.3 96.2 299 R 1 6384 06 17 52 1148-001 10 02 36 56.6 124.1 -1.8 -51.2 0 1 4 6384 06 17 32 06 22 52 --- 10 07 36 57.6 125.6 -1.7 -49.9 299 R 1 4256 06 23 51 3C274 10 08 36 55.1 96.8 -2.4 -73.0 35 1 5 4256 06 23 31 06 53 47 --- 10 38 36 62.0 101.1 -1.9 -70.9 1795 F 1 7845 Schedule for VLBA_MK (Code Mk ) 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) ---------------------------------------------------------------------------------------- --- Fri 23 Apr 2004 Day 114 --- 06 54 46 3C274 10 39 36 62.3 101.3 -1.9 -70.8 54 1 6 7845 06 54 26 07 24 41 --- 11 09 36 69.1 107.7 -1.4 -66.6 1795 R 1 15255 07 25 41 1148-001 11 10 36 67.5 152.8 -0.7 -25.5 24 1 6 15255 07 25 21 07 30 40 --- 11 15 36 68.0 155.8 -0.6 -22.7 299 R 1 13127 07 31 40 3C274 11 16 36 70.7 109.8 -1.2 -65.0 23 1 6 13127 07 31 20 08 01 35 --- 11 46 36 77.0 123.2 -0.7 -53.7 1795 R 1 1026 08 02 35 3C274 11 47 36 77.2 123.8 -0.7 -53.1 54 1 7 1026 08 02 15 08 32 30 --- 12 17 36 81.9 156.0 -0.2 -23.1 1795 F 1 11074 08 33 30 1148-001 12 18 36 68.7 199.3 0.5 18.1 25 1 7 11074 08 33 10 08 38 29 --- 12 23 36 68.3 202.5 0.5 21.1 299 F 1 13202 08 39 29 3C274 12 24 36 82.4 168.0 -0.1 -11.6 26 1 8 13202 08 39 09 09 09 24 --- 12 54 36 80.7 218.1 0.4 36.5 1795 R 1 9897 09 10 24 3C274 12 55 36 80.5 219.3 0.4 37.6 53 1 9 9897 09 10 04 09 40 19 --- 13 25 36 74.9 242.5 0.9 58.7 1795 F 1 2203 09 41 19 1148-001 13 26 36 59.0 232.0 1.6 47.9 22 1 9 2203 09 40 59 09 46 18 --- 13 31 36 58.1 233.6 1.7 49.2 299 F 1 4331 09 47 18 3C274 13 32 36 73.5 245.6 1.0 61.3 23 1 9 4331 09 46 58 10 17 13 --- 14 02 36 66.8 254.8 1.5 68.3 1795 F 1 16432 10 18 13 3C274 14 03 36 66.6 255.0 1.5 68.5 54 1 10 16432 10 17 53 10 48 08 --- 14 33 36 59.7 260.5 2.0 71.8 1795 R 1 6668 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 53.750745 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 27.34268 * 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 57.374585 * 1148-001 -00 07 13.16375 *-00 23 54.20490 -00 25 22.18793 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 03.018611 1228+126 12 40 01.74911 * 12 23 28.04393 12 22 01.61467 * 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 57.8 1148-001 144.6 3C274 145.8 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