COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067p 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 23 48 17 3C147 22 19 22 16.2 38.9 -7.4 -50.8 0 1 1 0 23 47 57 23 51 17 --- 22 22 22 16.6 39.2 -7.3 -51.3 180 F 1 1330 --- Sun 28 Dec 2003 Day 362 --- 01 01 05 3C147 23 32 22 26.0 45.8 -6.2 -62.3 4164 1 1 1330 01 00 45 01 04 05 --- 23 35 22 26.5 46.0 -6.1 -62.7 180 F 1 2660 01 06 04 3C120 23 37 22 16.0 95.5 -4.9 -52.8 81 1 1 2660 01 05 44 01 26 01 --- 23 57 22 19.9 98.6 -4.6 -52.2 1197 F 1 10772 01 26 19 J0423-0120 23 57 40 17.7 105.8 -4.4 -50.0 7 1 1 10772 01 26 01 01 29 18 =0420-014 00 00 40 18.3 106.4 -4.4 -49.8 180 F 1 12086 01 29 36 3C120 00 00 58 20.6 99.2 -4.5 -52.1 7 1 2 12086 01 29 18 01 49 33 --- 00 20 58 24.5 102.6 -4.2 -51.3 1197 R 1 15018 01 49 50 J0423-0120 00 21 15 22.2 109.9 -4.0 -48.5 7 1 2 15018 01 49 33 01 52 50 =0420-014 00 24 15 22.7 110.5 -4.0 -48.3 180 R 1 13703 01 53 07 3C120 00 24 33 25.2 103.2 -4.1 -51.1 7 1 2 13703 01 52 50 02 13 04 --- 00 44 33 29.1 106.7 -3.8 -50.0 1197 R 1 5608 02 14 45 3C147 00 46 14 37.0 51.0 -4.9 -73.7 57 1 2 5608 02 14 25 02 17 44 --- 00 49 14 37.5 51.2 -4.9 -74.2 180 R 1 4278 02 19 44 3C120 00 51 14 30.3 108.0 -3.7 -49.5 76 1 3 4278 02 19 24 02 39 40 --- 01 11 14 34.1 111.9 -3.4 -47.9 1197 F 1 3833 02 40 01 J0423-0120 01 11 34 31.3 119.7 -3.2 -43.8 9 1 3 3833 02 39 40 02 43 00 =0420-014 01 14 34 31.8 120.3 -3.1 -43.4 180 F 1 5165 02 43 20 3C120 01 14 54 34.8 112.6 -3.3 -47.6 8 1 3 5165 02 43 00 03 03 17 --- 01 34 54 38.4 116.9 -3.0 -45.5 1197 F 1 13278 03 03 37 J0423-0120 01 35 14 35.2 124.9 -2.8 -40.8 8 1 3 13278 03 03 17 03 06 37 =0420-014 01 38 14 35.7 125.6 -2.8 -40.3 180 F 1 14609 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) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 03 06 56 3C120 01 38 34 39.0 117.7 -2.9 -45.1 7 1 4 14609 03 06 37 03 26 53 --- 01 58 34 42.5 122.4 -2.6 -42.5 1197 R 1 12482 03 28 41 3C147 02 00 22 48.8 53.9 -3.7 -85.9 56 1 4 12482 03 28 21 03 31 40 --- 02 03 22 49.3 53.9 -3.7 -86.5 180 R 1 11151 03 33 40 3C120 02 05 22 43.6 124.2 -2.5 -41.4 67 1 4 11151 03 33 20 03 53 37 --- 02 25 22 46.8 129.6 -2.1 -38.0 1197 R 1 3040 03 53 57 J0423-0120 02 25 43 42.8 138.0 -2.0 -32.2 6 1 4 3040 03 53 37 03 56 57 =0420-014 02 28 43 43.2 138.8 -1.9 -31.6 180 R 1 1708 03 57 17 3C120 02 29 03 47.3 130.7 -2.1 -37.4 6 1 5 1708 03 56 57 04 17 14 --- 02 49 03 50.2 136.8 -1.7 -33.2 1197 F 1 6405 04 17 34 J0423-0120 02 49 23 45.7 145.2 -1.6 -27.1 5 1 5 6405 04 17 14 04 20 33 =0420-014 02 52 23 46.0 146.1 -1.5 -26.4 180 F 1 7737 04 20 54 3C120 02 52 43 50.7 138.0 -1.7 -32.3 5 1 5 7737 04 20 33 04 40 50 --- 03 12 43 53.2 145.0 -1.3 -27.3 1197 F 1 15850 04 42 38 3C147 03 14 31 60.7 52.6 -2.5 -101.2 40 1 5 15850 04 42 18 04 45 38 --- 03 17 31 61.2 52.4 -2.4 -102.0 180 F 1 17180 04 47 37 3C120 03 19 31 53.9 147.6 -1.2 -25.4 50 1 6 17180 04 47 17 05 07 34 --- 03 39 31 55.8 155.6 -0.9 -19.3 1197 R 1 9069 05 07 54 J0423-0120 03 39 52 50.1 162.8 -0.7 -13.6 3 1 6 9069 05 07 34 05 10 54 =0420-014 03 42 52 50.3 164.0 -0.7 -12.7 180 R 1 7737 05 11 14 3C120 03 43 12 56.1 157.2 -0.8 -18.1 3 1 7 7737 05 10 54 05 31 11 --- 04 03 12 57.4 165.9 -0.5 -11.2 1197 F 1 376 05 31 31 J0423-0120 04 03 33 51.2 172.0 -0.3 -6.3 2 1 7 376 05 31 11 05 34 31 =0420-014 04 06 33 51.2 173.2 -0.3 -5.4 180 F 1 1709 05 34 51 3C120 04 06 53 57.6 167.6 -0.4 -9.9 2 1 7 1709 05 34 31 05 54 48 --- 04 26 53 58.1 176.9 -0.1 -2.5 1197 F 1 9821 05 56 52 3C147 04 28 58 71.7 40.6 -1.2 -126.5 28 1 7 9821 05 56 32 05 59 52 --- 04 31 58 72.1 39.6 -1.2 -128.0 180 F 1 11151 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) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 06 02 00 3C120 04 34 06 58.1 180.3 0.0 0.3 28 1 8 11151 06 01 40 06 21 57 --- 04 54 06 57.8 189.7 0.3 7.7 1197 R 1 15937 06 22 17 J0423-0120 04 54 27 50.8 192.3 0.5 9.8 0 1 8 15937 06 21 57 06 25 17 =0420-014 04 57 27 50.6 193.5 0.6 10.7 180 R 1 14605 06 25 37 3C120 04 57 47 57.6 191.4 0.4 9.1 0 1 8 14605 06 25 17 06 45 33 --- 05 17 47 56.6 200.3 0.7 16.1 1197 R 1 6492 06 45 54 J0423-0120 05 18 07 49.4 201.3 0.9 16.8 0 1 8 6492 06 45 33 06 48 53 =0420-014 05 21 07 49.2 202.4 1.0 17.7 180 R 1 5160 06 49 14 3C120 05 21 28 56.3 201.9 0.8 17.4 0 1 9 5160 06 48 53 07 09 10 --- 05 41 28 54.5 210.1 1.1 23.7 1197 F 1 2953 07 11 14 3C147 05 43 32 77.4 359.6 0.0 179.4 18 1 9 2953 07 10 54 07 14 14 --- 05 46 32 77.4 357.3 0.1 176.7 180 F 1 4283 07 16 29 3C120 05 48 48 53.8 213.0 1.3 25.8 33 1 9 4283 07 16 09 07 36 26 --- 06 08 48 51.4 220.2 1.6 31.1 1197 F 1 12395 07 36 46 J0423-0120 06 09 08 44.3 218.4 1.8 29.7 0 1 9 12395 07 36 26 07 39 46 =0420-014 06 12 08 44.0 219.3 1.8 30.3 180 F 1 13727 07 40 06 3C120 06 12 28 50.9 221.4 1.7 32.0 0 1 10 13727 07 39 46 08 00 03 --- 06 32 28 48.1 227.8 2.0 36.3 1197 R 1 13360 08 00 23 J0423-0120 06 32 49 41.2 225.3 2.2 34.5 0 1 10 13360 08 00 03 08 03 22 =0420-014 06 35 49 40.8 226.1 2.2 35.0 180 R 1 12028 08 03 43 3C120 06 36 09 47.6 228.9 2.0 37.0 1 1 10 12028 08 03 22 08 23 39 --- 06 56 09 44.5 234.5 2.4 40.6 1197 R 1 3915 08 25 27 3C147 06 57 57 71.5 319.1 1.3 126.0 45 1 10 3915 08 25 07 08 28 26 --- 07 00 57 71.1 318.2 1.3 124.6 180 R 1 2585 08 36 10 3C120 07 08 41 42.4 237.7 2.6 42.5 400 1 11 2585 08 35 50 08 56 06 --- 07 28 41 38.9 242.4 2.9 45.1 1197 F 1 5526 08 56 27 J0423-0120 07 29 02 32.3 239.0 3.1 43.0 1 1 11 5526 08 56 06 08 59 26 =0420-014 07 32 02 31.8 239.6 3.1 43.4 180 F 1 6858 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) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 08 59 46 3C120 07 32 22 38.3 243.2 3.0 45.6 1 1 11 6858 08 59 26 09 19 43 --- 07 52 22 34.7 247.5 3.3 47.6 1197 F 1 14971 09 20 03 J0423-0120 07 52 42 28.2 243.9 3.5 45.6 1 1 11 14971 09 19 43 09 23 02 =0420-014 07 55 42 27.7 244.4 3.5 45.9 180 F 1 16300 09 23 22 3C120 07 56 02 34.0 248.2 3.4 48.0 1 1 12 16300 09 23 02 09 43 19 --- 08 16 02 30.3 252.1 3.7 49.6 1197 R 1 10790 09 44 48 3C147 08 17 31 59.7 307.1 2.6 99.7 24 1 12 10790 09 44 28 09 47 47 --- 08 20 31 59.2 306.9 2.6 99.0 180 R 1 9460 09 49 38 3C286 08 22 22 27.3 431.0 -5.1 -60.9 22 1 12 9460 09 49 18 09 52 38 --- 08 25 22 27.9 431.4 -5.1 -61.1 180 R 1 8130 09 54 49 3C120 08 27 34 28.1 254.2 3.9 50.3 8 1 12 8130 09 54 29 10 14 46 --- 08 47 34 24.2 257.7 4.2 51.4 1197 R 1 18 10 15 06 J0423-0120 08 47 54 18.0 253.9 4.4 49.9 1 1 13 18 10 14 46 10 18 05 =0420-014 08 50 54 17.4 254.4 4.5 50.1 180 F 1 1346 10 18 25 3C120 08 51 13 23.5 258.3 4.3 51.6 1 1 13 1346 10 18 05 10 38 21 --- 09 11 13 19.6 261.6 4.6 52.3 1197 F 1 9453 10 39 44 3C147 09 12 37 50.9 306.0 3.5 88.3 15 1 13 9453 10 39 24 10 42 44 --- 09 15 37 50.4 306.0 3.5 87.7 180 F 1 10784 10 45 09 3C286 09 18 02 38.0 437.6 -4.2 -64.5 51 1 13 10784 10 44 49 10 48 09 --- 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 28.433607 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.21328 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 24.288816 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.69795 * 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 55.678126 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 20.68520 * 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 18.396963 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.65850 * 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 141.3 3C120 147.4 3C147 152.1 3C286 88.8 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