COVER INFORMATION Station: VLBA_PT (Code Pt ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067n 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_PT (Code Pt ) 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 16 Dec 2003 Day 350 --- 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 35 28 3C147 23 00 00 19.4 42.2 -6.7 -59.4 0 1 1 0 00 35 08 00 38 28 --- 23 03 00 19.8 42.4 -6.7 -59.8 180 F 1 1330 01 03 52 3C120 23 28 28 14.4 93.3 -5.1 -55.9 1484 1 1 1330 01 03 32 01 23 49 --- 23 48 28 18.5 96.3 -4.7 -55.6 1197 F 1 9442 01 24 04 J0423-0120 23 48 44 16.7 103.5 -4.6 -53.5 4 1 1 9442 01 23 49 01 27 03 =0420-014 23 51 44 17.3 104.0 -4.5 -53.3 180 F 1 10740 01 27 19 3C120 23 51 59 19.2 96.8 -4.7 -55.5 4 1 2 10740 01 27 03 01 47 15 --- 00 11 59 23.3 99.8 -4.4 -54.8 1197 R 1 16380 01 48 16 3C147 00 13 00 30.0 47.6 -5.5 -71.1 20 1 2 16380 01 47 56 01 51 16 --- 00 16 00 30.5 47.8 -5.4 -71.6 180 R 1 15050 01 53 15 3C120 00 18 00 24.5 100.8 -4.3 -54.6 78 1 2 15050 01 52 55 02 13 12 --- 00 38 00 28.6 104.0 -3.9 -53.6 1197 R 1 6939 02 13 30 J0423-0120 00 38 18 26.4 111.8 -3.8 -50.1 7 1 2 6939 02 13 12 02 16 29 =0420-014 00 41 18 27.0 112.3 -3.7 -49.9 180 R 1 5624 02 16 47 3C120 00 41 36 29.3 104.6 -3.9 -53.4 7 1 3 5624 02 16 29 02 36 44 --- 01 01 36 33.2 108.2 -3.5 -52.0 1197 F 1 2472 02 37 01 J0423-0120 01 01 53 30.9 116.2 -3.4 -47.9 6 1 3 2472 02 36 44 02 40 01 =0420-014 01 04 53 31.4 116.7 -3.3 -47.6 180 F 1 3786 02 40 18 3C120 01 05 11 33.9 108.8 -3.5 -51.7 6 1 3 3786 02 40 01 03 00 15 --- 01 25 11 37.8 112.7 -3.1 -49.9 1197 F 1 11882 03 01 55 3C147 01 26 52 41.6 50.8 -4.3 -83.3 53 1 3 11882 03 01 35 03 04 55 --- 01 29 52 42.1 50.9 -4.2 -83.9 180 F 1 13212 03 06 55 3C120 01 31 52 39.1 114.1 -3.0 -49.2 72 1 4 13212 03 06 35 03 26 51 --- 01 51 52 42.8 118.5 -2.7 -46.8 1197 R 1 13877 03 27 12 J0423-0120 01 52 12 39.7 127.1 -2.5 -41.2 8 1 4 13877 03 26 51 03 30 11 =0420-014 01 55 12 40.2 127.9 -2.5 -40.7 180 R 1 12545 Schedule for VLBA_PT (Code Pt ) 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 16 Dec 2003 Day 350 --- 03 30 31 3C120 01 55 32 43.4 119.4 -2.6 -46.3 8 1 4 12545 03 30 11 03 50 28 --- 02 15 32 47.0 124.4 -2.3 -43.2 1197 R 1 4432 03 50 48 J0423-0120 02 15 52 43.5 133.3 -2.1 -37.0 7 1 4 4432 03 50 28 03 53 48 =0420-014 02 18 52 43.9 134.1 -2.1 -36.4 180 R 1 3102 03 54 07 3C120 02 19 12 47.6 125.4 -2.2 -42.6 6 1 5 3102 03 53 48 04 14 04 --- 02 39 12 50.8 131.1 -1.9 -38.7 1197 F 1 5008 04 15 52 3C147 02 41 00 53.5 50.7 -3.0 -97.7 48 1 5 5008 04 15 32 04 18 51 --- 02 44 00 54.0 50.6 -3.0 -98.3 180 F 1 6338 04 20 51 3C120 02 46 00 51.9 133.3 -1.8 -37.2 59 1 5 6338 04 20 31 04 40 48 --- 03 06 00 54.7 140.1 -1.5 -32.1 1197 F 1 14450 04 41 08 J0423-0120 03 06 20 50.0 149.1 -1.3 -25.1 5 1 5 14450 04 40 48 04 44 08 =0420-014 03 09 20 50.3 150.1 -1.2 -24.3 180 F 1 15782 04 44 28 3C120 03 09 41 55.2 141.5 -1.4 -31.1 5 1 6 15782 04 44 08 05 04 24 --- 03 29 41 57.5 149.4 -1.1 -25.0 1197 R 1 11305 05 04 45 J0423-0120 03 30 01 52.2 157.8 -0.9 -18.2 4 1 6 11305 05 04 24 05 07 44 =0420-014 03 33 01 52.5 159.0 -0.8 -17.2 180 R 1 9973 05 08 05 3C120 03 33 21 57.9 151.0 -1.0 -23.7 3 1 6 9973 05 07 44 05 28 01 --- 03 53 21 59.6 160.0 -0.7 -16.5 1197 R 1 1860 05 29 49 3C147 03 55 09 64.9 43.5 -1.8 -118.1 24 1 6 1860 05 29 29 05 32 49 --- 03 58 09 65.3 43.0 -1.7 -119.1 180 R 1 530 05 34 48 3C120 04 00 09 60.1 163.2 -0.6 -13.8 33 1 7 530 05 34 28 05 54 45 --- 04 20 09 60.9 173.2 -0.2 -5.6 1197 F 1 7581 05 55 05 J0423-0120 04 20 30 54.4 178.7 0.0 -1.1 1 1 7 7581 05 54 45 05 58 05 =0420-014 04 23 30 54.4 180.0 0.0 0.0 180 F 1 8913 05 58 25 3C120 04 23 50 61.0 175.1 -0.2 -4.1 1 1 7 8913 05 58 05 06 18 22 --- 04 43 50 61.0 185.4 0.2 4.4 1197 F 1 17026 06 18 42 J0423-0120 04 44 10 54.0 188.8 0.3 7.3 0 1 8 17026 06 18 22 06 21 42 =0420-014 04 47 10 53.9 190.1 0.4 8.3 180 R 1 16841 Schedule for VLBA_PT (Code Pt ) 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 16 Dec 2003 Day 350 --- 06 22 02 3C120 04 47 31 60.9 187.2 0.2 6.0 0 1 8 16841 06 21 42 06 41 58 --- 05 07 31 60.0 197.2 0.6 14.2 1197 R 1 8729 06 44 03 3C147 05 09 36 73.3 19.0 -0.6 -155.4 0 1 8 8729 06 43 43 06 47 03 --- 05 12 36 73.5 17.4 -0.5 -157.5 180 R 1 7399 06 49 11 3C120 05 14 44 59.5 200.6 0.7 17.0 0 1 9 7399 06 48 51 07 09 08 --- 05 34 44 57.8 209.6 1.0 24.2 1197 F 1 713 07 09 28 J0423-0120 05 35 05 50.6 209.0 1.2 23.6 0 1 9 713 07 09 08 07 12 27 =0420-014 05 38 05 50.3 210.0 1.2 24.4 180 F 1 2045 07 12 48 3C120 05 38 25 57.4 211.1 1.1 25.4 0 1 9 2045 07 12 27 07 32 44 --- 05 58 25 55.0 219.0 1.4 31.5 1197 F 1 10158 07 33 05 J0423-0120 05 58 45 47.9 217.1 1.6 29.9 0 1 9 10158 07 32 44 07 36 04 =0420-014 06 01 45 47.6 218.0 1.6 30.6 180 F 1 11490 07 36 24 3C120 06 02 06 54.5 220.3 1.5 32.5 0 1 10 11490 07 36 04 07 56 21 --- 06 22 06 51.7 227.1 1.8 37.5 1197 R 1 15597 07 58 25 3C147 06 24 10 72.7 337.2 0.7 150.2 45 1 10 15597 07 58 05 08 01 25 --- 06 27 10 72.5 335.8 0.7 148.3 180 R 1 14267 08 03 40 3C120 06 29 26 50.5 229.4 1.9 39.1 59 1 10 14267 08 03 20 08 23 37 --- 06 49 26 47.3 235.1 2.3 42.9 1197 R 1 6155 08 23 57 J0423-0120 06 49 46 40.6 231.6 2.4 40.4 1 1 10 6155 08 23 37 08 26 57 =0420-014 06 52 46 40.1 232.4 2.5 40.9 180 R 1 4823 08 27 17 3C120 06 53 06 46.6 236.1 2.3 43.5 1 1 11 4823 08 26 57 08 47 14 --- 07 13 06 43.1 241.1 2.7 46.6 1197 F 1 3290 08 47 34 J0423-0120 07 13 27 36.6 237.2 2.8 44.0 1 1 11 3290 08 47 14 08 50 33 =0420-014 07 16 27 36.1 237.9 2.9 44.4 180 F 1 4622 08 50 54 3C120 07 16 47 42.4 241.9 2.7 47.1 1 1 11 4622 08 50 33 09 10 50 --- 07 36 47 38.7 246.3 3.1 49.4 1197 F 1 12735 09 12 38 3C147 07 38 35 63.8 315.2 1.9 115.4 51 1 11 12735 09 12 18 09 15 37 --- 07 41 35 63.3 314.7 2.0 114.4 180 F 1 14065 Schedule for VLBA_PT (Code Pt ) 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 16 Dec 2003 Day 350 --- 09 18 05 3C286 07 44 03 19.0 425.5 -5.8 -60.7 53 1 11 14065 09 17 45 09 21 05 --- 07 47 03 19.6 425.8 -5.7 -61.0 180 F 1 15395 09 23 20 3C120 07 49 19 36.3 248.8 3.3 50.7 12 1 12 15395 09 23 00 09 43 17 --- 08 09 19 32.4 252.6 3.6 52.3 1197 R 1 11694 09 43 38 J0423-0120 08 09 40 26.2 248.4 3.8 50.2 2 1 12 11694 09 43 17 09 46 37 =0420-014 08 12 40 25.7 249.0 3.8 50.5 180 R 1 10361 09 46 57 3C120 08 13 00 31.7 253.2 3.7 52.6 2 1 12 10361 09 46 37 10 06 54 --- 08 33 00 27.7 256.7 4.0 53.8 1197 R 1 2249 10 07 14 J0423-0120 08 33 20 21.6 252.5 4.2 52.0 2 1 12 2249 10 06 54 10 10 13 =0420-014 08 36 20 21.0 253.0 4.2 52.2 180 R 1 919 10 10 33 3C120 08 36 40 27.0 257.3 4.1 54.0 2 1 13 919 10 10 13 10 30 30 --- 08 56 40 22.9 260.5 4.4 54.9 1197 F 1 7190 10 31 59 3C147 08 58 09 51.4 309.0 3.3 94.8 26 1 13 7190 10 31 39 10 34 58 --- 09 01 09 50.9 308.9 3.3 94.2 180 F 1 8520 10 36 49 3C286 09 03 00 34.3 433.8 -4.5 -67.0 22 1 13 8520 10 36 29 10 39 49 --- 09 06 00 34.9 434.1 -4.4 -67.2 180 F 1 9850 10 42 00 3C120 09 08 12 20.6 262.2 4.6 55.3 11 1 14 9850 10 41 40 11 01 57 --- 09 28 12 16.5 265.2 4.9 55.8 1197 R 1 17238 11 26 55 3C147 09 53 14 42.5 309.0 4.2 84.4 1440 1 14 17238 11 26 35 11 29 55 --- 09 56 14 42.1 309.1 4.2 83.8 180 R 1 15908 11 32 20 3C286 09 58 40 45.5 439.5 -3.5 -70.5 52 1 14 15908 11 32 00 11 35 20 --- 10 01 40 46.1 439.8 -3.5 -70.6 180 R 1 14578 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 28.382419 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 56.87022 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 24.219961 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 49.64022 * 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 55.464060 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 18.61448 * 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 17.965710 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 13.94197 * 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 150.1 3C120 157.0 3C147 153.4 3C286 79.1 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