COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067o 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 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 02 11 3C147 22 29 22 17.5 39.9 -7.2 -52.4 0 1 1 0 00 01 51 00 05 11 --- 22 32 22 17.9 40.2 -7.2 -52.9 180 F 1 1330 00 54 04 3C120 23 21 23 12.8 93.0 -5.2 -53.0 2892 1 1 1330 00 53 44 01 14 00 --- 23 41 23 16.8 96.1 -4.9 -52.7 1197 F 1 9442 01 15 05 3C147 23 42 27 27.5 46.6 -6.0 -63.8 25 1 1 9442 01 14 45 01 18 04 --- 23 45 27 27.9 46.9 -6.0 -64.3 180 F 1 10772 01 20 04 3C120 23 47 27 18.0 97.1 -4.8 -52.5 80 1 2 10772 01 19 44 01 40 00 --- 00 07 27 21.9 100.3 -4.4 -51.9 1197 R 1 16317 01 40 18 J0423-0120 00 07 45 19.6 107.6 -4.3 -49.4 7 1 2 16317 01 40 00 01 43 18 =0420-014 00 10 45 20.2 108.1 -4.2 -49.2 180 R 1 15001 01 43 36 3C120 00 11 03 22.6 100.9 -4.4 -51.7 7 1 2 15001 01 43 18 02 03 32 --- 00 31 03 26.5 104.3 -4.0 -50.8 1197 R 1 6904 02 03 50 J0423-0120 00 31 21 24.0 111.8 -3.9 -47.7 7 1 2 6904 02 03 32 02 06 50 =0420-014 00 34 21 24.6 112.3 -3.8 -47.5 180 R 1 5589 02 07 07 3C120 00 34 39 27.2 105.0 -4.0 -50.6 7 1 3 5589 02 06 50 02 27 04 --- 00 54 39 31.0 108.6 -3.6 -49.3 1197 F 1 2508 02 28 54 3C147 00 56 29 38.6 51.6 -4.8 -75.3 65 1 3 2508 02 28 34 02 31 53 --- 00 59 29 39.1 51.7 -4.7 -75.8 180 F 1 3838 02 33 53 3C120 01 01 29 32.3 109.9 -3.5 -48.7 75 1 3 3838 02 33 33 02 53 50 --- 01 21 29 36.0 114.0 -3.2 -46.9 1197 F 1 11950 02 54 10 J0423-0120 01 21 49 33.0 121.9 -3.0 -42.5 8 1 3 11950 02 53 50 02 57 09 =0420-014 01 24 49 33.5 122.6 -3.0 -42.2 180 F 1 13282 02 57 30 3C120 01 25 09 36.6 114.7 -3.1 -46.6 8 1 4 13282 02 57 09 03 17 26 --- 01 45 09 40.2 119.2 -2.8 -44.3 1197 R 1 13805 03 17 46 J0423-0120 01 45 29 36.9 127.3 -2.6 -39.3 7 1 4 13805 03 17 26 03 20 46 =0420-014 01 48 29 37.4 128.1 -2.6 -38.8 180 R 1 12476 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 03 21 06 3C120 01 48 49 40.8 120.1 -2.7 -43.8 7 1 4 12476 03 20 46 03 41 02 --- 02 08 49 44.2 125.1 -2.4 -40.9 1197 R 1 4366 03 42 58 3C147 02 10 45 50.5 54.0 -3.5 -87.8 62 1 4 4366 03 42 38 03 45 58 --- 02 13 45 50.9 54.0 -3.5 -88.4 180 R 1 3036 03 47 57 3C120 02 15 45 45.3 126.9 -2.3 -39.8 65 1 5 3036 03 47 37 04 07 54 --- 02 35 45 48.3 132.6 -2.0 -36.0 1197 F 1 5076 04 08 14 J0423-0120 02 36 06 44.1 141.0 -1.8 -30.1 6 1 5 5076 04 07 54 04 11 14 =0420-014 02 39 06 44.5 141.9 -1.7 -29.4 180 F 1 6408 04 11 34 3C120 02 39 26 48.9 133.8 -1.9 -35.3 5 1 5 6408 04 11 14 04 31 31 --- 02 59 26 51.6 140.3 -1.6 -30.7 1197 F 1 14521 04 31 51 J0423-0120 02 59 46 46.8 148.5 -1.4 -24.6 5 1 5 14521 04 31 31 04 34 51 =0420-014 03 02 46 47.1 149.5 -1.3 -23.8 180 F 1 15853 04 35 11 3C120 03 03 06 52.0 141.6 -1.5 -29.8 4 1 6 15853 04 34 51 04 55 08 --- 03 23 06 54.3 149.0 -1.2 -24.3 1197 R 1 11234 04 57 03 3C147 03 25 02 62.3 51.8 -2.3 -103.9 45 1 6 11234 04 56 43 05 00 02 --- 03 28 02 62.8 51.6 -2.2 -104.7 180 R 1 9904 05 02 02 3C120 03 30 02 55.0 151.7 -1.1 -22.3 47 1 6 9904 05 01 42 05 21 59 --- 03 50 02 56.6 160.1 -0.7 -15.8 1197 R 1 1793 05 22 19 J0423-0120 03 50 22 50.7 166.9 -0.6 -10.4 2 1 6 1793 05 21 59 05 25 19 =0420-014 03 53 22 50.8 168.0 -0.5 -9.5 180 R 1 460 05 25 39 3C120 03 53 43 56.9 161.7 -0.7 -14.5 2 1 7 460 05 25 19 05 45 36 --- 04 13 43 57.8 170.8 -0.3 -7.4 1197 F 1 7653 05 45 56 J0423-0120 04 14 03 51.4 176.2 -0.2 -3.0 1 1 7 7653 05 45 36 05 48 55 =0420-014 04 17 03 51.4 177.4 -0.1 -2.0 180 F 1 8985 05 49 16 3C120 04 17 23 57.9 172.5 -0.3 -6.0 1 1 7 8985 05 48 55 06 09 12 --- 04 37 23 58.1 181.9 0.1 1.5 1197 F 1 17098 06 11 17 3C147 04 39 29 73.0 37.1 -1.1 -131.9 22 1 8 17098 06 10 57 06 14 17 --- 04 42 29 73.3 35.9 -1.0 -133.6 180 R 1 16772 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 06 16 25 3C120 04 44 37 58.0 185.3 0.2 4.2 23 1 8 16772 06 16 05 06 36 22 --- 05 04 37 57.3 194.5 0.5 11.6 1197 R 1 8661 06 36 42 J0423-0120 05 04 58 50.3 196.4 0.7 13.0 0 1 8 8661 06 36 22 06 39 42 =0420-014 05 07 58 50.1 197.5 0.7 13.8 180 R 1 7328 06 40 02 3C120 05 08 18 57.2 196.2 0.6 12.9 0 1 9 7328 06 39 42 06 59 58 --- 05 28 18 55.8 204.8 0.9 19.6 1197 F 1 784 07 00 19 J0423-0120 05 28 38 48.6 205.1 1.1 19.7 0 1 9 784 06 59 58 07 03 18 =0420-014 05 31 38 48.3 206.1 1.1 20.5 180 F 1 2116 07 03 39 3C120 05 31 59 55.4 206.3 1.0 20.8 0 1 9 2116 07 03 18 07 23 35 --- 05 51 59 53.4 214.2 1.3 26.7 1197 F 1 10229 07 25 13 3C147 05 53 37 77.2 352.2 0.2 170.3 0 1 9 10229 07 24 53 07 28 13 --- 05 56 37 77.1 350.0 0.2 167.7 180 F 1 11559 07 30 12 3C120 05 58 37 52.7 216.6 1.4 28.5 25 1 10 11559 07 29 52 07 50 09 --- 06 18 37 50.1 223.5 1.8 33.4 1197 R 1 15529 07 50 30 J0423-0120 06 18 57 43.1 221.4 1.9 31.8 0 1 10 15529 07 50 09 07 53 29 =0420-014 06 21 57 42.7 222.2 2.0 32.4 180 R 1 14197 07 53 49 3C120 06 22 17 49.6 224.6 1.8 34.2 0 1 10 14197 07 53 29 08 13 46 --- 06 42 17 46.7 230.7 2.1 38.2 1197 R 1 6084 08 14 06 J0423-0120 06 42 38 39.8 227.9 2.3 36.2 1 1 10 6084 08 13 46 08 17 06 =0420-014 06 45 38 39.3 228.7 2.4 36.7 180 R 1 4752 08 17 26 3C120 06 45 58 46.1 231.7 2.2 38.9 1 1 11 4752 08 17 06 08 37 23 --- 07 05 58 42.8 237.0 2.5 42.1 1197 F 1 3360 08 39 18 3C147 07 07 54 70.2 316.4 1.4 121.6 55 1 11 3360 08 38 58 08 42 18 --- 07 10 54 69.8 315.6 1.5 120.3 180 F 1 4690 08 44 45 3C286 07 13 22 14.7 422.6 -6.3 -55.1 31 1 11 4690 08 44 25 08 47 45 --- 07 16 22 15.2 423.0 -6.2 -55.4 180 F 1 6020 08 50 00 3C120 07 18 37 40.7 240.1 2.8 43.9 7 1 11 6020 08 49 40 09 09 56 --- 07 38 37 37.2 244.6 3.1 46.3 1197 F 1 14132 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 09 10 17 J0423-0120 07 38 57 30.6 241.1 3.3 44.2 1 1 11 14132 09 09 56 09 13 16 =0420-014 07 41 57 30.1 241.7 3.3 44.5 180 F 1 15463 09 13 36 3C120 07 42 17 36.5 245.4 3.1 46.6 1 1 12 15463 09 13 16 09 33 33 --- 08 02 17 32.8 249.5 3.5 48.5 1197 R 1 11626 09 33 53 J0423-0120 08 02 37 26.4 245.8 3.7 46.6 1 1 12 11626 09 33 33 09 36 52 =0420-014 08 05 37 25.9 246.4 3.7 46.9 180 R 1 10297 09 37 12 3C120 08 05 57 32.1 250.2 3.5 48.8 1 1 12 10297 09 36 52 09 57 08 --- 08 25 57 28.4 253.9 3.9 50.2 1197 R 1 2188 09 58 33 3C147 08 27 22 58.1 306.6 2.7 97.5 19 1 12 2188 09 58 13 10 01 32 --- 08 30 22 57.7 306.5 2.8 96.8 180 R 1 858 10 04 01 3C286 08 32 51 29.3 432.3 -5.0 -61.6 59 1 13 858 10 03 41 10 07 00 --- 08 35 51 29.8 432.6 -4.9 -61.9 180 F 1 473 10 09 12 3C120 08 38 02 26.0 256.1 4.1 50.9 8 1 13 473 10 08 52 10 29 09 --- 08 58 02 22.1 259.5 4.4 51.8 1197 F 1 8584 10 29 13 3C120 08 58 07 22.1 259.5 4.4 51.8 0 1 13 8584 10 29 09 10 49 10 --- 09 18 07 18.2 262.7 4.7 52.5 1197 F 1 16592 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 28.435702 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.14194 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 24.289860 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.73586 * 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 55.670867 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 20.46366 * 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 18.361974 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.90875 * 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 142.1 3C120 148.3 3C147 152.4 3C286 88.0 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