COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067i 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_LA (Code La ) 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 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 26 35 3C147 23 07 30 21.5 43.2 -6.6 -59.5 0 1 1 0 01 26 15 01 29 34 --- 23 10 30 21.9 43.5 -6.5 -60.0 180 F 1 1330 01 51 45 J0423-0120 23 32 44 13.2 101.4 -4.8 -52.7 1286 1 1 1330 01 51 25 01 54 44 =0420-014 23 35 44 13.8 101.9 -4.8 -52.6 180 F 1 2660 01 54 59 3C120 23 35 58 15.8 94.8 -5.0 -54.3 4 1 1 2660 01 54 44 02 14 55 --- 23 55 58 19.8 97.9 -4.6 -53.8 1197 F 1 10733 02 15 11 J0423-0120 23 56 13 17.8 105.2 -4.5 -51.6 4 1 1 10733 02 14 55 02 18 10 =0420-014 23 59 13 18.4 105.7 -4.4 -51.4 180 F 1 12031 02 18 25 3C120 23 59 29 20.5 98.5 -4.6 -53.7 4 1 2 12031 02 18 10 02 38 22 --- 00 19 29 24.5 101.7 -4.2 -52.9 1197 R 1 15089 02 39 23 3C147 00 20 30 32.2 48.7 -5.4 -71.0 20 1 2 15089 02 39 03 02 42 22 --- 00 23 30 32.6 48.9 -5.3 -71.5 180 R 1 13759 02 44 22 3C120 00 25 30 25.7 102.7 -4.1 -52.7 78 1 2 13759 02 44 02 03 04 19 --- 00 45 30 29.7 106.1 -3.8 -51.5 1197 R 1 5647 03 04 37 J0423-0120 00 45 48 27.3 113.8 -3.6 -47.9 7 1 2 5647 03 04 19 03 07 36 =0420-014 00 48 48 27.8 114.4 -3.6 -47.7 180 R 1 4332 03 07 54 3C120 00 49 05 30.4 106.8 -3.7 -51.3 7 1 3 4332 03 07 36 03 27 50 --- 01 09 05 34.2 110.5 -3.4 -49.7 1197 F 1 3763 03 28 08 J0423-0120 01 09 23 31.6 118.5 -3.2 -45.5 6 1 3 3763 03 27 50 03 31 08 =0420-014 01 12 23 32.1 119.1 -3.2 -45.2 180 F 1 5078 03 31 25 3C120 01 12 41 34.9 111.2 -3.3 -49.4 6 1 3 5078 03 31 08 03 51 22 --- 01 32 41 38.6 115.3 -3.0 -47.4 1197 F 1 13173 03 53 02 3C147 01 34 21 43.7 52.1 -4.1 -83.1 52 1 3 13173 03 52 42 03 56 02 --- 01 37 21 44.2 52.2 -4.1 -83.6 180 F 1 14503 03 58 01 3C120 01 39 21 39.8 116.8 -2.9 -46.7 71 1 4 14503 03 57 41 04 17 58 --- 01 59 21 43.4 121.5 -2.6 -44.0 1197 R 1 12585 Schedule for VLBA_LA (Code La ) 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 04 18 18 J0423-0120 01 59 41 40.0 130.0 -2.4 -38.5 8 1 4 12585 04 17 58 04 21 18 =0420-014 02 02 41 40.5 130.7 -2.3 -37.9 180 R 1 11253 04 21 38 3C120 02 03 02 44.0 122.4 -2.5 -43.5 7 1 4 11253 04 21 18 04 41 35 --- 02 23 02 47.3 127.7 -2.2 -40.1 1197 R 1 3141 04 41 55 J0423-0120 02 23 22 43.5 136.4 -2.0 -34.0 6 1 4 3141 04 41 35 04 44 54 =0420-014 02 26 22 43.9 137.2 -2.0 -33.4 180 R 1 1810 04 45 14 3C120 02 26 42 47.9 128.7 -2.1 -39.5 6 1 5 1810 04 44 54 05 05 11 --- 02 46 42 50.9 134.8 -1.8 -35.3 1197 F 1 6300 05 06 59 3C147 02 48 30 55.7 52.0 -2.9 -97.3 47 1 5 6300 05 06 39 05 09 58 --- 02 51 30 56.1 51.9 -2.9 -98.0 180 F 1 7630 05 11 58 3C120 02 53 30 51.9 137.1 -1.7 -33.7 57 1 5 7630 05 11 38 05 31 55 --- 03 13 30 54.5 144.2 -1.3 -28.5 1197 F 1 15741 05 32 15 J0423-0120 03 13 50 49.5 152.6 -1.2 -21.9 4 1 5 15741 05 31 55 05 35 14 =0420-014 03 16 50 49.8 153.7 -1.1 -21.1 180 F 1 17073 05 35 35 3C120 03 17 10 54.9 145.6 -1.3 -27.4 4 1 6 17073 05 35 14 05 55 31 --- 03 37 10 57.0 153.7 -0.9 -21.2 1197 R 1 10014 05 55 52 J0423-0120 03 37 31 51.4 161.4 -0.8 -15.0 3 1 6 10014 05 55 31 05 58 51 =0420-014 03 40 31 51.6 162.6 -0.7 -14.1 180 R 1 8681 05 59 11 3C120 03 40 51 57.3 155.3 -0.9 -19.9 3 1 6 8681 05 58 51 06 19 08 --- 04 00 51 58.7 164.3 -0.5 -12.8 1197 R 1 569 06 20 56 3C147 04 02 39 67.0 44.4 -1.7 -118.3 22 1 7 569 06 20 36 06 23 55 --- 04 05 39 67.5 43.8 -1.6 -119.4 180 F 1 761 06 25 55 3C120 04 07 39 59.0 167.5 -0.4 -10.2 31 1 7 761 06 25 35 06 45 52 --- 04 27 39 59.6 177.2 -0.1 -2.3 1197 F 1 8873 06 46 12 J0423-0120 04 27 59 52.9 181.9 0.1 1.5 1 1 7 8873 06 45 52 06 49 12 =0420-014 04 30 59 52.9 183.1 0.1 2.5 180 F 1 10205 06 49 32 3C120 04 31 20 59.6 179.0 0.0 -0.8 1 1 8 10205 06 49 12 07 09 28 --- 04 51 20 59.3 188.8 0.3 7.1 1197 R 1 16882 Schedule for VLBA_LA (Code La ) 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 07 09 49 J0423-0120 04 51 40 52.3 191.6 0.5 9.4 0 1 8 16882 07 09 28 07 12 48 =0420-014 04 54 40 52.2 192.8 0.5 10.3 180 R 1 15550 07 13 09 3C120 04 55 00 59.2 190.5 0.4 8.6 0 1 8 15550 07 12 48 07 33 05 --- 05 15 00 58.1 199.9 0.7 16.1 1197 R 1 7437 07 35 10 3C147 05 17 05 75.2 376.4 -0.4 -159.1 1 1 8 7437 07 34 50 07 38 10 --- 05 20 05 75.3 374.7 -0.4 -161.4 180 R 1 6107 07 40 18 3C120 05 22 14 57.6 203.1 0.8 18.7 8 1 9 6107 07 39 58 08 00 14 --- 05 42 14 55.7 211.5 1.1 25.2 1197 F 1 2004 08 00 35 J0423-0120 05 42 34 48.6 210.7 1.3 24.5 0 1 9 2004 08 00 14 08 03 34 =0420-014 05 45 34 48.2 211.8 1.4 25.3 180 F 1 3337 08 03 55 3C120 05 45 55 55.3 213.0 1.2 26.3 0 1 9 3337 08 03 34 08 23 51 --- 06 05 55 52.9 220.4 1.5 31.9 1197 F 1 11450 08 24 12 J0423-0120 06 06 15 45.8 218.5 1.7 30.3 0 1 9 11450 08 23 51 08 27 11 =0420-014 06 09 15 45.5 219.4 1.8 31.0 180 F 1 12782 08 27 31 3C120 06 09 35 52.4 221.7 1.6 32.8 0 1 10 12782 08 27 11 08 47 28 --- 06 29 35 49.5 228.1 1.9 37.4 1197 R 1 14305 08 49 32 3C147 06 31 40 73.4 331.6 0.8 143.2 49 1 10 14305 08 49 12 08 52 31 --- 06 34 40 73.1 330.3 0.9 141.4 180 R 1 12975 08 54 47 3C120 06 36 55 48.4 230.3 2.1 38.9 63 1 10 12975 08 54 27 09 14 44 --- 06 56 55 45.2 235.9 2.4 42.4 1197 R 1 4864 09 15 04 J0423-0120 06 57 16 38.4 232.5 2.6 40.1 1 1 10 4864 09 14 44 09 18 03 =0420-014 07 00 16 38.0 233.3 2.6 40.6 180 R 1 3532 09 18 24 3C120 07 00 36 44.5 236.8 2.5 43.0 1 1 11 3532 09 18 03 09 38 20 --- 07 20 36 41.1 241.7 2.8 45.8 1197 F 1 4581 09 38 41 J0423-0120 07 20 56 34.5 238.0 3.0 43.5 1 1 11 4581 09 38 20 09 41 40 =0420-014 07 23 56 34.0 238.7 3.0 43.9 180 F 1 5914 09 42 00 3C120 07 24 17 40.4 242.5 2.8 46.3 1 1 11 5914 09 41 40 10 01 57 --- 07 44 17 36.7 246.8 3.2 48.5 1197 F 1 14026 Schedule for VLBA_LA (Code La ) 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 10 03 45 3C147 07 46 04 63.7 311.9 2.1 110.6 48 1 11 14026 10 03 25 10 06 44 --- 07 49 04 63.2 311.6 2.1 109.7 180 F 1 15356 10 09 12 3C286 07 51 33 21.0 426.8 -5.7 -60.0 57 1 11 15356 10 08 52 10 12 12 --- 07 54 33 21.6 427.2 -5.6 -60.2 180 F 1 16686 10 14 27 3C120 07 56 49 34.4 249.3 3.4 49.7 11 1 12 16686 10 14 07 10 34 24 --- 08 16 49 30.5 253.1 3.7 51.2 1197 R 1 10402 10 34 44 J0423-0120 08 17 09 24.3 249.1 3.9 49.3 2 1 12 10402 10 34 24 10 37 44 =0420-014 08 20 09 23.7 249.7 3.9 49.5 180 R 1 9070 10 38 04 3C120 08 20 29 29.8 253.7 3.8 51.5 2 1 12 9070 10 37 44 10 58 01 --- 08 40 29 25.9 257.2 4.1 52.6 1197 R 1 957 10 58 21 J0423-0120 08 40 49 19.7 253.2 4.3 51.0 2 1 13 957 10 58 01 11 01 20 =0420-014 08 43 49 19.2 253.7 4.3 51.2 180 F 1 372 11 01 40 3C120 08 44 09 25.2 257.8 4.2 52.8 2 1 13 372 11 01 20 11 21 37 --- 09 04 09 21.2 261.0 4.5 53.6 1197 F 1 8482 11 23 06 3C147 09 05 38 51.1 307.4 3.4 91.5 23 1 13 8482 11 22 46 11 26 05 --- 09 08 38 50.6 307.4 3.4 90.9 180 F 1 9812 11 27 56 3C286 09 10 30 36.1 435.6 -4.3 -65.8 19 1 13 9812 11 27 36 11 30 55 --- 09 13 30 36.7 436.0 -4.3 -66.0 180 F 1 11142 11 33 07 3C120 09 15 42 18.9 262.9 4.7 54.0 10 1 14 11142 11 32 47 11 53 04 --- 09 35 42 14.8 265.9 5.0 54.4 1197 R 1 15947 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 28.280918 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 55.31203 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 24.098907 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.73265 * 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 55.155753 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 16.51553 * 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 17.562950 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 17.71993 * 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 156.4 3C120 163.3 3C147 149.3 3C286 68.8 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