COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067l Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Craig Walker Address: National Radio Astronomy Observatory P. O. Box O Socorro, New Mexico, 87801 U.S.A. Phone: 505 835 7247 EMAIL: cwalker@nrao.edu Fax: 505 835 7027 Phone during observation: 505 835 7247 Observing mode: 6cm 128-4-2 Notes: COVER LETTER: 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. I have submitted a schedule as bw067c for that session. The other sessions can involve as little as 2 hours and as few as 6 antennas. The observing frequency is 327 MHz. Tropospheric weather is not an issue - any conditions are ok. The ionosphere and the solar corona are potential problems. An outcome of the test observations (bw067a and bw067b) was that we should not observe near the sun. So please don't schedule this in the months of April through July. As per discussions with Dave Medcalf, I have set up this schedule to use a SCHED optimization mode that allows any subset of a full track to be designated by only changing the start time and the overall duration. So, with only modifications to those parameters, this schedule can be used repeatedly to build up the required baseline hours. See the "Initial Scan Information" section in the key file. The schedule uses 1.3 tape passes per hour. 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]: Excluded dates plus reason [none]: April through July (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 Image 3C120 at 90cm - calibrator test 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 9 Dec 2003 Day 343 --- 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 02 59 3C147 22 19 22 16.2 38.9 -7.4 -50.8 0 1 1 0 01 02 39 01 05 59 --- 22 22 22 16.6 39.2 -7.3 -51.3 180 F 1 1330 02 15 48 3C147 23 32 22 26.0 45.8 -6.2 -62.3 4164 1 1 1330 02 15 28 02 18 47 --- 23 35 22 26.5 46.0 -6.1 -62.7 180 F 1 2660 02 20 47 3C120 23 37 22 16.0 95.5 -4.9 -52.8 81 1 1 2660 02 20 27 02 40 43 --- 23 57 22 19.9 98.6 -4.6 -52.2 1197 F 1 10772 02 41 01 J0423-0120 23 57 40 17.7 105.8 -4.4 -50.0 7 1 1 10772 02 40 43 02 44 01 =0420-014 00 00 40 18.3 106.4 -4.4 -49.8 180 F 1 12086 02 44 18 3C120 00 00 58 20.6 99.2 -4.5 -52.1 7 1 2 12086 02 44 01 03 04 15 --- 00 20 58 24.5 102.6 -4.2 -51.3 1197 R 1 15018 03 04 33 J0423-0120 00 21 15 22.2 109.9 -4.0 -48.5 7 1 2 15018 03 04 15 03 07 32 =0420-014 00 24 15 22.7 110.5 -4.0 -48.3 180 R 1 13703 03 07 50 3C120 00 24 33 25.2 103.2 -4.1 -51.1 7 1 2 13703 03 07 32 03 27 46 --- 00 44 33 29.1 106.7 -3.8 -50.0 1197 R 1 5608 03 29 27 3C147 00 46 14 37.0 51.0 -4.9 -73.7 57 1 2 5608 03 29 07 03 32 26 --- 00 49 14 37.5 51.2 -4.9 -74.2 180 R 1 4278 03 34 26 3C120 00 51 14 30.3 108.0 -3.7 -49.5 76 1 3 4278 03 34 06 03 54 23 --- 01 11 14 34.1 111.9 -3.4 -47.9 1197 F 1 3833 03 54 43 J0423-0120 01 11 34 31.3 119.7 -3.2 -43.8 9 1 3 3833 03 54 23 03 57 42 =0420-014 01 14 34 31.8 120.3 -3.1 -43.4 180 F 1 5165 03 58 03 3C120 01 14 54 34.8 112.6 -3.3 -47.6 8 1 3 5165 03 57 42 04 17 59 --- 01 34 54 38.4 116.9 -3.0 -45.5 1197 F 1 13278 04 18 19 J0423-0120 01 35 14 35.2 124.9 -2.8 -40.8 8 1 3 13278 04 17 59 04 21 19 =0420-014 01 38 14 35.7 125.6 -2.8 -40.3 180 F 1 14609 04 21 39 3C120 01 38 34 39.0 117.7 -2.9 -45.1 7 1 4 14609 04 21 19 04 41 35 --- 01 58 34 42.5 122.4 -2.6 -42.5 1197 R 1 12482 Schedule for VLBA_OV (Code Ov ) Page 3 Image 3C120 at 90cm - calibrator test 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 9 Dec 2003 Day 343 --- 04 43 23 3C147 02 00 22 48.8 53.9 -3.7 -85.9 56 1 4 12482 04 43 03 04 46 23 --- 02 03 22 49.3 53.9 -3.7 -86.5 180 R 1 11151 04 48 22 3C120 02 05 22 43.6 124.2 -2.5 -41.4 67 1 4 11151 04 48 02 05 08 19 --- 02 25 22 46.8 129.6 -2.1 -38.0 1197 R 1 3040 05 08 39 J0423-0120 02 25 43 42.8 138.0 -2.0 -32.2 6 1 4 3040 05 08 19 05 11 39 =0420-014 02 28 43 43.2 138.8 -1.9 -31.6 180 R 1 1708 05 11 59 3C120 02 29 03 47.3 130.7 -2.1 -37.4 6 1 5 1708 05 11 39 05 31 56 --- 02 49 03 50.2 136.8 -1.7 -33.2 1197 F 1 6405 05 32 16 J0423-0120 02 49 23 45.7 145.2 -1.6 -27.1 5 1 5 6405 05 31 56 05 35 16 =0420-014 02 52 23 46.0 146.1 -1.5 -26.4 180 F 1 7737 05 35 36 3C120 02 52 43 50.7 138.0 -1.7 -32.3 5 1 5 7737 05 35 16 05 55 33 --- 03 12 43 53.2 145.0 -1.3 -27.3 1197 F 1 15850 05 57 20 3C147 03 14 31 60.7 52.6 -2.5 -101.2 40 1 5 15850 05 57 00 06 00 20 --- 03 17 31 61.2 52.4 -2.4 -102.0 180 F 1 17180 06 02 20 3C120 03 19 31 53.9 147.6 -1.2 -25.4 50 1 6 17180 06 02 00 06 22 16 --- 03 39 31 55.8 155.6 -0.9 -19.3 1197 R 1 9069 06 22 37 J0423-0120 03 39 52 50.1 162.8 -0.7 -13.6 3 1 6 9069 06 22 16 06 25 36 =0420-014 03 42 52 50.3 164.0 -0.7 -12.7 180 R 1 7737 06 25 56 3C120 03 43 12 56.1 157.2 -0.8 -18.1 3 1 7 7737 06 25 36 06 45 53 --- 04 03 12 57.4 165.9 -0.5 -11.2 1197 F 1 376 06 46 13 J0423-0120 04 03 32 51.2 172.0 -0.3 -6.3 2 1 7 376 06 45 53 06 49 13 =0420-014 04 06 32 51.2 173.2 -0.3 -5.4 180 F 1 1709 06 49 33 3C120 04 06 53 57.6 167.6 -0.4 -9.9 2 1 7 1709 06 49 13 07 09 30 --- 04 26 53 58.1 176.9 -0.1 -2.5 1197 F 1 9821 07 11 35 3C147 04 28 58 71.7 40.6 -1.2 -126.5 28 1 7 9821 07 11 15 07 14 34 --- 04 31 58 72.1 39.6 -1.2 -128.0 180 F 1 11151 07 16 42 3C120 04 34 06 58.1 180.3 0.0 0.3 28 1 8 11151 07 16 22 07 36 39 --- 04 54 06 57.8 189.7 0.3 7.7 1197 R 1 15937 Schedule for VLBA_OV (Code Ov ) Page 4 Image 3C120 at 90cm - calibrator test 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 9 Dec 2003 Day 343 --- 07 36 59 J0423-0120 04 54 27 50.8 192.3 0.5 9.8 0 1 8 15937 07 36 39 07 39 59 =0420-014 04 57 27 50.6 193.5 0.6 10.7 180 R 1 14605 07 40 19 3C120 04 57 47 57.6 191.4 0.4 9.1 0 1 8 14605 07 39 59 08 00 16 --- 05 17 47 56.6 200.3 0.7 16.1 1197 R 1 6492 08 00 36 J0423-0120 05 18 07 49.4 201.3 0.9 16.8 0 1 8 6492 08 00 16 08 03 36 =0420-014 05 21 07 49.2 202.4 1.0 17.7 180 R 1 5160 08 03 56 3C120 05 21 28 56.3 201.9 0.8 17.4 0 1 9 5160 08 03 36 08 23 53 --- 05 41 28 54.5 210.1 1.1 23.7 1197 F 1 2953 08 25 56 3C147 05 43 32 77.4 359.5 0.0 179.4 18 1 9 2953 08 25 36 08 28 56 --- 05 46 32 77.4 357.3 0.1 176.7 180 F 1 4283 08 31 11 3C120 05 48 48 53.8 213.0 1.3 25.8 33 1 9 4283 08 30 51 08 51 08 --- 06 08 48 51.4 220.2 1.6 31.1 1197 F 1 12395 08 51 28 J0423-0120 06 09 08 44.3 218.4 1.8 29.7 0 1 9 12395 08 51 08 08 54 28 =0420-014 06 12 08 44.0 219.4 1.8 30.3 180 F 1 13727 08 54 48 3C120 06 12 28 50.9 221.4 1.7 32.0 0 1 10 13727 08 54 28 09 14 45 --- 06 32 28 48.1 227.8 2.0 36.3 1197 R 1 13360 09 15 05 J0423-0120 06 32 49 41.2 225.3 2.2 34.5 0 1 10 13360 09 14 45 09 18 05 =0420-014 06 35 49 40.8 226.1 2.2 35.0 180 R 1 12028 09 18 25 3C120 06 36 09 47.6 228.9 2.0 37.0 1 1 10 12028 09 18 05 09 38 22 --- 06 56 09 44.5 234.5 2.4 40.6 1197 R 1 3915 09 40 09 3C147 06 57 57 71.5 319.1 1.3 126.0 45 1 10 3915 09 39 49 09 43 09 --- 07 00 57 71.1 318.2 1.3 124.6 180 R 1 2585 09 50 52 3C120 07 08 41 42.4 237.7 2.6 42.5 400 1 11 2585 09 50 32 10 10 49 --- 07 28 41 38.9 242.4 2.9 45.1 1197 F 1 5526 10 11 09 J0423-0120 07 29 02 32.3 239.0 3.1 43.0 1 1 11 5526 10 10 49 10 14 08 =0420-014 07 32 02 31.8 239.6 3.1 43.4 180 F 1 6858 10 14 29 3C120 07 32 22 38.3 243.2 3.0 45.6 1 1 11 6858 10 14 08 10 34 25 --- 07 52 22 34.7 247.5 3.3 47.6 1197 F 1 14971 Schedule for VLBA_OV (Code Ov ) Page 5 Image 3C120 at 90cm - calibrator test 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 9 Dec 2003 Day 343 --- 10 34 45 J0423-0120 07 52 42 28.2 243.9 3.5 45.6 1 1 11 14971 10 34 25 10 37 45 =0420-014 07 55 42 27.7 244.4 3.5 45.9 180 F 1 16300 10 38 04 3C120 07 56 02 34.0 248.2 3.4 48.0 1 1 12 16300 10 37 45 10 58 01 --- 08 16 02 30.2 252.1 3.7 49.6 1197 R 1 10790 10 59 30 3C147 08 17 31 59.7 307.0 2.6 99.7 24 1 12 10790 10 59 10 11 02 30 --- 08 20 31 59.2 306.9 2.6 99.0 180 R 1 9460 11 04 20 3C286 08 22 22 27.3 431.0 -5.1 -60.9 22 1 12 9460 11 04 00 11 07 20 --- 08 25 22 27.9 431.4 -5.1 -61.1 180 R 1 8130 11 09 32 3C120 08 27 34 28.1 254.2 3.9 50.3 8 1 12 8130 11 09 12 11 29 28 --- 08 47 34 24.2 257.7 4.2 51.4 1197 R 1 18 11 29 48 J0423-0120 08 47 54 18.0 253.9 4.4 49.9 1 1 13 18 11 29 28 11 32 47 =0420-014 08 50 54 17.4 254.4 4.5 50.1 180 F 1 1346 11 33 07 3C120 08 51 13 23.5 258.3 4.3 51.6 1 1 13 1346 11 32 47 11 53 04 --- 09 11 13 19.6 261.6 4.6 52.3 1197 F 1 9453 11 54 27 3C147 09 12 37 50.9 306.0 3.5 88.3 15 1 13 9453 11 54 07 11 57 26 --- 09 15 37 50.4 306.0 3.5 87.7 180 F 1 10784 11 59 52 3C286 09 18 02 38.0 437.6 -4.2 -64.5 51 1 13 10784 11 59 32 12 02 51 --- 09 21 02 38.5 437.9 -4.2 -64.6 180 F 1 12114 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 = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_auto SOURCE LIST -- Image 3C120 at 90cm - calibrator test 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) * J0423-0120 04 20 43.539850 * 04 23 15.800727 04 23 28.323908 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 56.23783 J0423-01 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report J0433+0521 04 30 31.602066 * 04 33 11.095535 04 33 24.151044 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.02378 * 3C120 /home/filehost/cwalker/sched/catalogs/sources.vlba J0433+05 ICRF - Ext.1 Source - 1998 IERS Annual Report J0542+4951 05 38 43.517539 * 05 42 36.137917 05 42 55.293829 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 17.26800 * 3C147 /home/filehost/cwalker/sched/catalogs/sources.vlba J0542+49 ICRF - Ext.1 Source - 1998 IERS Annual Report J1331+3030 13 28 49.657691 * 13 31 08.287984 13 31 17.724738 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 16.08625 * 3C286 /home/filehost/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 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) J0423-0120 154.1 3C120 161.2 3C147 151.8 3C286 73.5 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