COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067h 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) ---------------------------------------------------------------------------------------- --- Mon 1 Dec 2003 Day 335 --- 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 44 25 3C147 22 29 22 17.5 39.9 -7.2 -52.4 0 1 1 0 01 44 05 01 47 25 --- 22 32 22 17.9 40.2 -7.2 -52.9 180 F 1 1330 02 36 17 3C120 23 21 23 12.8 93.0 -5.2 -53.0 2892 1 1 1330 02 35 57 02 56 14 --- 23 41 23 16.8 96.1 -4.9 -52.7 1197 F 1 9442 02 57 18 3C147 23 42 27 27.5 46.6 -6.0 -63.8 25 1 1 9442 02 56 58 03 00 18 --- 23 45 27 27.9 46.9 -6.0 -64.3 180 F 1 10772 03 02 17 3C120 23 47 27 18.0 97.1 -4.8 -52.5 80 1 2 10772 03 01 57 03 22 14 --- 00 07 27 21.9 100.3 -4.4 -51.9 1197 R 1 16317 03 22 32 J0423-0120 00 07 45 19.6 107.6 -4.3 -49.4 7 1 2 16317 03 22 14 03 25 32 =0420-014 00 10 45 20.2 108.1 -4.2 -49.2 180 R 1 15001 03 25 49 3C120 00 11 03 22.6 100.9 -4.4 -51.7 7 1 2 15001 03 25 32 03 45 46 --- 00 31 03 26.5 104.3 -4.0 -50.8 1197 R 1 6904 03 46 04 J0423-0120 00 31 21 24.0 111.8 -3.9 -47.7 7 1 2 6904 03 45 46 03 49 03 =0420-014 00 34 21 24.6 112.3 -3.8 -47.5 180 R 1 5589 03 49 21 3C120 00 34 39 27.2 105.0 -4.0 -50.6 7 1 3 5589 03 49 03 04 09 18 --- 00 54 39 31.0 108.6 -3.6 -49.3 1197 F 1 2508 04 11 07 3C147 00 56 29 38.6 51.6 -4.8 -75.3 65 1 3 2508 04 10 47 04 14 07 --- 00 59 29 39.1 51.7 -4.7 -75.8 180 F 1 3838 04 16 07 3C120 01 01 29 32.3 109.9 -3.5 -48.7 75 1 3 3838 04 15 47 04 36 03 --- 01 21 29 36.0 114.0 -3.2 -46.9 1197 F 1 11950 04 36 24 J0423-0120 01 21 49 33.0 121.9 -3.0 -42.5 8 1 3 11950 04 36 03 04 39 23 =0420-014 01 24 49 33.5 122.6 -3.0 -42.2 180 F 1 13282 04 39 43 3C120 01 25 09 36.6 114.7 -3.1 -46.6 8 1 4 13282 04 39 23 04 59 40 --- 01 45 09 40.2 119.2 -2.8 -44.3 1197 R 1 13805 05 00 00 J0423-0120 01 45 29 36.9 127.3 -2.6 -39.3 7 1 4 13805 04 59 40 05 02 59 =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) ---------------------------------------------------------------------------------------- --- Mon 1 Dec 2003 Day 335 --- 05 03 19 3C120 01 48 49 40.8 120.1 -2.7 -43.8 7 1 4 12476 05 02 59 05 23 16 --- 02 08 49 44.2 125.1 -2.4 -40.9 1197 R 1 4366 05 25 12 3C147 02 10 45 50.5 54.0 -3.5 -87.8 62 1 4 4366 05 24 52 05 28 11 --- 02 13 45 50.9 54.0 -3.5 -88.4 180 R 1 3036 05 30 11 3C120 02 15 45 45.3 126.9 -2.3 -39.8 65 1 5 3036 05 29 51 05 50 08 --- 02 35 45 48.3 132.6 -2.0 -36.0 1197 F 1 5076 05 50 28 J0423-0120 02 36 06 44.1 141.0 -1.8 -30.1 6 1 5 5076 05 50 08 05 53 28 =0420-014 02 39 06 44.5 141.9 -1.7 -29.4 180 F 1 6408 05 53 48 3C120 02 39 26 48.9 133.8 -1.9 -35.3 5 1 5 6408 05 53 28 06 13 44 --- 02 59 26 51.6 140.3 -1.6 -30.7 1197 F 1 14521 06 14 05 J0423-0120 02 59 46 46.8 148.5 -1.4 -24.6 5 1 5 14521 06 13 44 06 17 04 =0420-014 03 02 46 47.1 149.5 -1.3 -23.8 180 F 1 15853 06 17 24 3C120 03 03 06 52.0 141.6 -1.5 -29.8 4 1 6 15853 06 17 04 06 37 21 --- 03 23 06 54.3 149.0 -1.2 -24.3 1197 R 1 11234 06 39 17 3C147 03 25 02 62.3 51.8 -2.3 -103.9 45 1 6 11234 06 38 57 06 42 16 --- 03 28 02 62.8 51.6 -2.2 -104.7 180 R 1 9904 06 44 16 3C120 03 30 02 55.0 151.7 -1.1 -22.3 47 1 6 9904 06 43 56 07 04 12 --- 03 50 02 56.6 160.1 -0.7 -15.8 1197 R 1 1793 07 04 33 J0423-0120 03 50 22 50.7 166.9 -0.6 -10.4 2 1 6 1793 07 04 12 07 07 32 =0420-014 03 53 22 50.8 168.0 -0.5 -9.5 180 R 1 460 07 07 52 3C120 03 53 43 56.9 161.7 -0.7 -14.5 2 1 7 460 07 07 32 07 27 49 --- 04 13 43 57.8 170.8 -0.3 -7.4 1197 F 1 7653 07 28 10 J0423-0120 04 14 03 51.4 176.2 -0.2 -3.0 1 1 7 7653 07 27 49 07 31 09 =0420-014 04 17 03 51.4 177.4 -0.1 -2.0 180 F 1 8985 07 31 29 3C120 04 17 23 57.9 172.5 -0.3 -6.0 1 1 7 8985 07 31 09 07 51 26 --- 04 37 23 58.1 181.9 0.1 1.5 1197 F 1 17098 07 53 31 3C147 04 39 29 73.0 37.1 -1.1 -131.9 22 1 8 17098 07 53 11 07 56 30 --- 04 42 29 73.4 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) ---------------------------------------------------------------------------------------- --- Mon 1 Dec 2003 Day 335 --- 07 58 39 3C120 04 44 37 58.0 185.3 0.2 4.2 23 1 8 16772 07 58 19 08 18 35 --- 05 04 37 57.3 194.5 0.5 11.6 1197 R 1 8661 08 18 56 J0423-0120 05 04 58 50.3 196.4 0.7 13.0 0 1 8 8661 08 18 35 08 21 55 =0420-014 05 07 58 50.1 197.5 0.7 13.8 180 R 1 7329 08 22 15 3C120 05 08 18 57.2 196.2 0.6 12.9 0 1 9 7329 08 21 55 08 42 12 --- 05 28 18 55.8 204.8 0.9 19.6 1197 F 1 784 08 42 32 J0423-0120 05 28 38 48.6 205.1 1.1 19.7 0 1 9 784 08 42 12 08 45 32 =0420-014 05 31 38 48.3 206.1 1.1 20.5 180 F 1 2116 08 45 52 3C120 05 31 59 55.4 206.3 1.0 20.8 0 1 9 2116 08 45 32 09 05 49 --- 05 51 59 53.4 214.2 1.3 26.7 1197 F 1 10229 09 07 27 3C147 05 53 37 77.2 352.2 0.2 170.3 0 1 9 10229 09 07 07 09 10 26 --- 05 56 37 77.1 350.0 0.2 167.7 180 F 1 11559 09 12 26 3C120 05 58 37 52.7 216.6 1.4 28.5 25 1 10 11559 09 12 06 09 32 23 --- 06 18 37 50.1 223.5 1.8 33.4 1197 R 1 15529 09 32 43 J0423-0120 06 18 57 43.1 221.4 1.9 31.8 0 1 10 15529 09 32 23 09 35 43 =0420-014 06 21 57 42.7 222.2 2.0 32.4 180 R 1 14197 09 36 03 3C120 06 22 17 49.6 224.6 1.8 34.2 0 1 10 14197 09 35 43 09 56 00 --- 06 42 17 46.7 230.7 2.1 38.2 1197 R 1 6084 09 56 20 J0423-0120 06 42 38 39.8 227.9 2.3 36.2 1 1 10 6084 09 56 00 09 59 19 =0420-014 06 45 38 39.3 228.7 2.4 36.7 180 R 1 4752 09 59 39 3C120 06 45 58 46.1 231.7 2.2 38.9 1 1 11 4752 09 59 19 10 19 36 --- 07 05 58 42.8 237.0 2.5 42.1 1197 F 1 3360 10 21 32 3C147 07 07 54 70.2 316.4 1.4 121.6 55 1 11 3360 10 21 12 10 24 32 --- 07 10 54 69.8 315.6 1.5 120.3 180 F 1 4690 10 26 59 3C286 07 13 22 14.7 422.6 -6.3 -55.1 31 1 11 4690 10 26 39 10 29 58 --- 07 16 22 15.2 423.0 -6.2 -55.4 180 F 1 6020 10 32 13 3C120 07 18 37 40.7 240.1 2.8 43.9 7 1 11 6020 10 31 53 10 52 10 --- 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) ---------------------------------------------------------------------------------------- --- Mon 1 Dec 2003 Day 335 --- 10 52 30 J0423-0120 07 38 57 30.6 241.1 3.3 44.2 1 1 11 14132 10 52 10 10 55 30 =0420-014 07 41 57 30.1 241.7 3.3 44.5 180 F 1 15463 10 55 50 3C120 07 42 17 36.5 245.4 3.1 46.6 1 1 12 15463 10 55 30 11 15 46 --- 08 02 17 32.8 249.5 3.5 48.5 1197 R 1 11626 11 16 06 J0423-0120 08 02 37 26.4 245.8 3.7 46.6 1 1 12 11626 11 15 46 11 19 06 =0420-014 08 05 37 25.9 246.4 3.7 46.9 180 R 1 10297 11 19 25 3C120 08 05 57 32.1 250.2 3.5 48.8 1 1 12 10297 11 19 06 11 39 22 --- 08 25 57 28.4 253.9 3.9 50.2 1197 R 1 2188 11 40 46 3C147 08 27 22 58.1 306.6 2.7 97.5 19 1 12 2188 11 40 26 11 43 46 --- 08 30 22 57.7 306.5 2.8 96.8 180 R 1 858 11 46 15 3C286 08 32 51 29.3 432.3 -5.0 -61.7 59 1 13 858 11 45 55 11 49 14 --- 08 35 51 29.8 432.6 -4.9 -61.9 180 F 1 472 11 51 25 3C120 08 38 02 26.0 256.1 4.1 50.9 8 1 13 472 11 51 05 12 11 22 --- 08 58 02 22.1 259.5 4.4 51.8 1197 F 1 8584 12 11 27 3C120 08 58 07 22.1 259.5 4.4 51.8 0 1 13 8584 12 11 22 12 31 23 --- 09 18 07 18.2 262.7 4.7 52.5 1197 F 1 16592 12 32 47 3C147 09 19 30 49.7 306.0 3.6 87.0 14 1 14 16592 12 32 27 12 35 46 --- 09 22 30 49.3 306.1 3.7 86.5 180 R 1 17278 12 37 49 3C286 09 24 33 39.2 438.3 -4.1 -64.8 28 1 14 17278 12 37 29 12 40 48 --- 09 27 33 39.8 438.7 -4.1 -65.0 180 R 1 15948 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 28.273501 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 55.06500 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 24.089167 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.90282 * 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 55.120953 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 16.18429 * 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 17.517483 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 18.25107 * 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 156.9 3C120 163.6 3C147 148.2 3C286 67.3 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