COVER INFORMATION Station: VLBA_MK (Code Mk ) 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_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) ---------------------------------------------------------------------------------------- --- 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 03 20 39 48.8 34.7 -2.4 -123.8 0 1 1 0 00 51 24 00 56 43 --- 03 25 39 49.5 34.0 -2.3 -125.3 299 F 1 2128 00 58 43 3C147 03 27 39 49.7 33.7 -2.3 -125.9 114 1 1 2128 00 58 23 01 03 42 --- 03 32 39 50.4 33.0 -2.2 -127.4 299 F 1 4256 01 05 42 3C147 03 34 39 50.6 32.6 -2.1 -128.1 114 1 1 4256 01 05 22 01 10 41 --- 03 39 39 51.3 31.8 -2.1 -129.6 299 F 1 6384 02 21 47 3C147 04 50 57 58.2 16.0 -0.9 -156.3 4246 1 1 6384 02 21 27 02 26 46 --- 04 55 57 58.5 14.5 -0.8 -158.5 299 F 1 8511 03 37 51 3C147 06 07 14 59.6 -7.7 0.4 168.7 4245 1 1 8511 03 37 31 03 42 51 --- 06 12 14 59.4 -9.3 0.5 166.4 299 F 1 10639 04 53 58 3C147 07 23 33 53.9 -27.7 1.7 137.2 4249 1 1 10639 04 53 38 04 58 57 --- 07 28 33 53.3 -28.7 1.8 135.5 299 F 1 12767 05 01 19 1148-001 07 30 55 23.3 99.4 -4.3 -68.2 51 1 1 12767 05 00 59 05 06 19 --- 07 35 55 24.4 99.9 -4.3 -67.9 299 F 1 14895 05 07 18 3C274 07 36 55 19.5 83.4 -4.9 -73.1 43 1 2 14895 05 06 58 05 37 14 --- 08 06 55 26.5 85.7 -4.4 -73.8 1795 R 1 8204 05 38 13 3C274 08 07 55 26.7 85.8 -4.4 -73.9 54 1 3 8204 05 37 53 06 08 08 --- 08 37 55 33.8 88.1 -3.9 -74.3 1795 F 1 3896 06 10 10 3C147 08 39 57 43.9 -38.6 3.0 114.3 31 1 3 3896 06 09 50 06 15 09 --- 08 44 57 43.2 -39.1 3.0 113.0 299 F 1 6024 06 16 54 1148-001 08 46 42 40.6 108.6 -3.1 -63.1 0 1 3 6024 06 16 34 06 21 53 --- 08 51 42 41.7 109.3 -3.0 -62.6 299 F 1 8152 06 22 53 3C274 08 52 42 37.2 89.3 -3.6 -74.4 40 1 4 8152 06 22 33 06 52 48 --- 09 22 42 44.3 91.9 -3.1 -74.3 1795 R 1 14947 06 53 48 3C274 09 23 42 44.5 92.0 -3.1 -74.3 54 1 4 14947 06 53 28 07 23 43 --- 09 53 42 51.6 95.0 -2.6 -73.6 1795 R 1 2847 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) ---------------------------------------------------------------------------------------- --- Sun 4 Apr 2004 Day 95 --- 07 25 42 3C147 09 55 42 32.2 -42.8 4.2 97.2 22 1 4 2847 07 25 22 07 30 42 --- 10 00 42 31.4 -42.9 4.3 96.2 299 R 1 719 07 32 39 1148-001 10 02 40 56.6 124.1 -1.8 -51.1 0 1 5 719 07 32 19 07 37 38 --- 10 07 40 57.6 125.6 -1.7 -49.9 299 F 1 1409 07 38 38 3C274 10 08 40 55.1 96.8 -2.4 -73.0 35 1 5 1409 07 38 18 08 08 33 --- 10 38 40 62.0 101.1 -1.9 -70.9 1795 F 1 13509 08 09 33 3C274 10 39 40 62.3 101.3 -1.9 -70.8 54 1 6 13509 08 09 13 08 39 28 --- 11 09 40 69.1 107.8 -1.4 -66.5 1795 R 1 9590 08 40 28 1148-001 11 10 40 67.5 152.8 -0.7 -25.5 24 1 6 9590 08 40 08 08 45 27 --- 11 15 40 68.0 155.8 -0.6 -22.7 299 R 1 7462 08 46 27 3C274 11 16 40 70.7 109.8 -1.2 -65.0 23 1 7 7462 08 46 07 09 16 22 --- 11 46 40 77.0 123.2 -0.7 -53.7 1795 F 1 4638 09 17 22 3C274 11 47 40 77.2 123.9 -0.7 -53.1 54 1 7 4638 09 17 02 09 47 17 --- 12 17 40 81.9 156.1 -0.2 -22.9 1795 F 1 16739 09 48 17 1148-001 12 18 40 68.7 199.4 0.5 18.2 25 1 8 16739 09 47 57 09 53 16 --- 12 23 40 68.2 202.6 0.5 21.2 299 R 1 16333 09 54 16 3C274 12 24 40 82.4 168.1 -0.1 -11.4 26 1 8 16333 09 53 56 10 24 11 --- 12 54 40 80.7 218.2 0.4 36.6 1795 R 1 4233 10 25 11 3C274 12 55 40 80.5 219.4 0.4 37.7 53 1 9 4233 10 24 51 10 55 06 --- 13 25 40 74.9 242.5 0.9 58.7 1795 F 1 7868 10 56 06 1148-001 13 26 40 59.0 232.0 1.6 47.9 22 1 9 7868 10 55 46 11 01 05 --- 13 31 40 58.1 233.6 1.7 49.2 299 F 1 9996 11 02 05 3C274 13 32 40 73.5 245.6 1.0 61.3 23 1 10 9996 11 01 45 11 32 00 --- 14 02 40 66.8 254.8 1.5 68.4 1795 R 1 13104 11 33 00 3C274 14 03 40 66.6 255.0 1.5 68.5 54 1 10 13104 11 32 40 12 02 55 --- 14 33 40 59.7 260.5 2.0 71.8 1795 R 1 1003 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