COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067j 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 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 06 55 3C147 23 07 30 21.5 43.2 -6.6 -59.5 0 1 1 0 01 06 35 01 09 55 --- 23 10 30 21.9 43.5 -6.5 -60.0 180 F 1 1330 01 32 05 J0423-0120 23 32 44 13.2 101.4 -4.8 -52.7 1286 1 1 1330 01 31 45 01 35 05 =0420-014 23 35 44 13.8 101.9 -4.8 -52.6 180 F 1 2660 01 35 19 3C120 23 35 58 15.8 94.8 -5.0 -54.3 4 1 1 2660 01 35 05 01 55 16 --- 23 55 58 19.8 97.9 -4.6 -53.8 1197 F 1 10733 01 55 31 J0423-0120 23 56 13 17.8 105.2 -4.5 -51.6 4 1 1 10733 01 55 16 01 58 31 =0420-014 23 59 13 18.4 105.7 -4.4 -51.4 180 F 1 12031 01 58 46 3C120 23 59 29 20.5 98.5 -4.6 -53.7 4 1 2 12031 01 58 31 02 18 43 --- 00 19 29 24.5 101.7 -4.2 -52.9 1197 R 1 15089 02 19 43 3C147 00 20 30 32.2 48.7 -5.4 -71.0 20 1 2 15089 02 19 23 02 22 43 --- 00 23 30 32.6 48.9 -5.3 -71.5 180 R 1 13759 02 24 43 3C120 00 25 30 25.7 102.7 -4.1 -52.7 78 1 2 13759 02 24 23 02 44 39 --- 00 45 30 29.7 106.1 -3.8 -51.5 1197 R 1 5647 02 44 57 J0423-0120 00 45 48 27.3 113.8 -3.6 -47.9 7 1 2 5647 02 44 39 02 47 57 =0420-014 00 48 48 27.8 114.4 -3.6 -47.7 180 R 1 4332 02 48 14 3C120 00 49 05 30.4 106.8 -3.7 -51.3 7 1 3 4332 02 47 57 03 08 11 --- 01 09 05 34.2 110.5 -3.4 -49.7 1197 F 1 3763 03 08 29 J0423-0120 01 09 23 31.6 118.5 -3.2 -45.5 6 1 3 3763 03 08 11 03 11 28 =0420-014 01 12 23 32.1 119.1 -3.2 -45.2 180 F 1 5078 03 11 46 3C120 01 12 41 34.9 111.2 -3.3 -49.4 6 1 3 5078 03 11 28 03 31 42 --- 01 32 41 38.6 115.3 -3.0 -47.4 1197 F 1 13173 03 33 23 3C147 01 34 21 43.7 52.1 -4.1 -83.1 52 1 3 13173 03 33 03 03 36 22 --- 01 37 21 44.2 52.2 -4.1 -83.6 180 F 1 14503 03 38 22 3C120 01 39 21 39.8 116.8 -2.9 -46.7 71 1 4 14503 03 38 02 03 58 19 --- 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 03 58 39 J0423-0120 01 59 41 40.0 130.0 -2.4 -38.5 8 1 4 12585 03 58 19 04 01 38 =0420-014 02 02 41 40.5 130.7 -2.3 -37.9 180 R 1 11253 04 01 59 3C120 02 03 02 44.0 122.4 -2.5 -43.5 7 1 4 11253 04 01 38 04 21 55 --- 02 23 02 47.3 127.7 -2.2 -40.1 1197 R 1 3141 04 22 15 J0423-0120 02 23 22 43.5 136.4 -2.0 -34.0 6 1 4 3141 04 21 55 04 25 15 =0420-014 02 26 22 43.9 137.2 -2.0 -33.4 180 R 1 1810 04 25 35 3C120 02 26 42 47.9 128.7 -2.1 -39.5 6 1 5 1810 04 25 15 04 45 31 --- 02 46 42 50.9 134.8 -1.8 -35.3 1197 F 1 6300 04 47 19 3C147 02 48 30 55.7 52.0 -2.9 -97.3 47 1 5 6300 04 46 59 04 50 19 --- 02 51 30 56.1 51.9 -2.9 -98.0 180 F 1 7630 04 52 18 3C120 02 53 30 51.9 137.1 -1.7 -33.7 57 1 5 7630 04 51 58 05 12 15 --- 03 13 30 54.5 144.2 -1.3 -28.5 1197 F 1 15741 05 12 35 J0423-0120 03 13 50 49.5 152.6 -1.2 -21.9 4 1 5 15741 05 12 15 05 15 35 =0420-014 03 16 50 49.8 153.7 -1.1 -21.1 180 F 1 17073 05 15 55 3C120 03 17 10 54.9 145.6 -1.3 -27.4 4 1 6 17073 05 15 35 05 35 52 --- 03 37 10 57.0 153.7 -0.9 -21.2 1197 R 1 10014 05 36 12 J0423-0120 03 37 31 51.4 161.4 -0.8 -15.0 3 1 6 10014 05 35 52 05 39 12 =0420-014 03 40 31 51.6 162.6 -0.7 -14.1 180 R 1 8681 05 39 32 3C120 03 40 51 57.3 155.3 -0.9 -19.9 3 1 6 8681 05 39 12 05 59 29 --- 04 00 51 58.7 164.3 -0.5 -12.8 1197 R 1 569 06 01 16 3C147 04 02 39 67.0 44.4 -1.7 -118.3 22 1 7 569 06 00 56 06 04 16 --- 04 05 39 67.5 43.8 -1.6 -119.4 180 F 1 761 06 06 15 3C120 04 07 39 59.0 167.5 -0.4 -10.2 31 1 7 761 06 05 55 06 26 12 --- 04 27 39 59.6 177.2 -0.1 -2.3 1197 F 1 8873 06 26 33 J0423-0120 04 27 59 52.9 181.9 0.1 1.5 1 1 7 8873 06 26 12 06 29 32 =0420-014 04 30 59 52.9 183.1 0.1 2.5 180 F 1 10205 06 29 52 3C120 04 31 20 59.6 179.0 0.0 -0.8 1 1 8 10205 06 29 32 06 49 49 --- 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 06 50 09 J0423-0120 04 51 40 52.3 191.6 0.5 9.4 0 1 8 16882 06 49 49 06 53 09 =0420-014 04 54 40 52.2 192.8 0.5 10.3 180 R 1 15550 06 53 29 3C120 04 55 00 59.2 190.5 0.4 8.6 0 1 8 15550 06 53 09 07 13 26 --- 05 15 00 58.1 199.9 0.7 16.1 1197 R 1 7437 07 15 31 3C147 05 17 05 75.2 376.4 -0.4 -159.1 1 1 8 7437 07 15 11 07 18 30 --- 05 20 05 75.3 374.7 -0.4 -161.4 180 R 1 6107 07 20 38 3C120 05 22 14 57.6 203.1 0.8 18.7 8 1 9 6107 07 20 18 07 40 35 --- 05 42 14 55.7 211.5 1.1 25.2 1197 F 1 2004 07 40 55 J0423-0120 05 42 34 48.6 210.7 1.3 24.5 0 1 9 2004 07 40 35 07 43 55 =0420-014 05 45 34 48.2 211.8 1.4 25.3 180 F 1 3337 07 44 15 3C120 05 45 55 55.3 213.0 1.2 26.3 0 1 9 3337 07 43 55 08 04 12 --- 06 05 55 52.9 220.4 1.5 31.9 1197 F 1 11450 08 04 32 J0423-0120 06 06 15 45.8 218.5 1.7 30.3 0 1 9 11450 08 04 12 08 07 31 =0420-014 06 09 15 45.5 219.4 1.8 31.0 180 F 1 12782 08 07 52 3C120 06 09 35 52.4 221.7 1.6 32.8 0 1 10 12782 08 07 31 08 27 48 --- 06 29 35 49.5 228.1 1.9 37.4 1197 R 1 14305 08 29 52 3C147 06 31 40 73.4 331.6 0.8 143.2 49 1 10 14305 08 29 32 08 32 52 --- 06 34 40 73.1 330.3 0.9 141.4 180 R 1 12975 08 35 07 3C120 06 36 55 48.4 230.3 2.1 38.9 63 1 10 12975 08 34 47 08 55 04 --- 06 56 55 45.2 235.9 2.4 42.4 1197 R 1 4864 08 55 24 J0423-0120 06 57 16 38.4 232.5 2.6 40.1 1 1 10 4864 08 55 04 08 58 24 =0420-014 07 00 16 38.0 233.3 2.6 40.6 180 R 1 3532 08 58 44 3C120 07 00 36 44.5 236.8 2.5 43.0 1 1 11 3532 08 58 24 09 18 41 --- 07 20 36 41.1 241.7 2.8 45.8 1197 F 1 4581 09 19 01 J0423-0120 07 20 56 34.5 238.0 3.0 43.5 1 1 11 4581 09 18 41 09 22 01 =0420-014 07 23 56 34.0 238.7 3.0 43.9 180 F 1 5914 09 22 21 3C120 07 24 17 40.4 242.5 2.8 46.3 1 1 11 5914 09 22 01 09 42 18 --- 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 09 44 05 3C147 07 46 04 63.7 311.9 2.1 110.6 48 1 11 14026 09 43 45 09 47 05 --- 07 49 04 63.2 311.6 2.1 109.7 180 F 1 15356 09 49 33 3C286 07 51 33 21.0 426.8 -5.7 -60.0 57 1 11 15356 09 49 13 09 52 32 --- 07 54 33 21.6 427.2 -5.6 -60.2 180 F 1 16686 09 54 48 3C120 07 56 49 34.4 249.3 3.4 49.7 11 1 12 16686 09 54 28 10 14 44 --- 08 16 49 30.5 253.1 3.7 51.2 1197 R 1 10402 10 15 05 J0423-0120 08 17 09 24.3 249.1 3.9 49.3 2 1 12 10402 10 14 44 10 18 04 =0420-014 08 20 09 23.7 249.7 3.9 49.5 180 R 1 9070 10 18 24 3C120 08 20 29 29.8 253.7 3.8 51.5 2 1 12 9070 10 18 04 10 38 21 --- 08 40 29 25.9 257.2 4.1 52.6 1197 R 1 957 10 38 41 J0423-0120 08 40 49 19.7 253.2 4.3 51.0 2 1 13 957 10 38 21 10 41 41 =0420-014 08 43 49 19.2 253.7 4.3 51.2 180 F 1 372 10 42 00 3C120 08 44 09 25.2 257.8 4.2 52.8 2 1 13 372 10 41 41 11 01 57 --- 09 04 09 21.2 261.0 4.5 53.6 1197 F 1 8482 11 03 26 3C147 09 05 38 51.1 307.4 3.4 91.5 23 1 13 8482 11 03 06 11 06 26 --- 09 08 38 50.6 307.4 3.4 90.9 180 F 1 9812 11 08 16 3C286 09 10 30 36.1 435.6 -4.3 -65.8 19 1 13 9812 11 07 56 11 11 16 --- 09 13 30 36.7 436.0 -4.3 -66.0 180 F 1 11142 11 13 28 3C120 09 15 42 18.9 262.9 4.7 54.0 10 1 14 11142 11 13 08 11 33 24 --- 09 35 42 14.8 265.9 5.0 54.4 1197 R 1 15947 11 58 23 3C147 10 00 44 42.3 308.2 4.3 81.5 1438 1 14 15947 11 58 03 12 01 22 --- 10 03 44 41.8 308.3 4.3 81.0 180 R 1 14617 12 03 47 3C286 10 06 10 47.2 441.8 -3.4 -68.7 50 1 14 14617 12 03 27 12 06 47 --- 10 09 10 47.8 442.2 -3.4 -68.9 180 R 1 13287 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 28.312279 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 56.10126 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 24.137657 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.12577 * 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 55.264056 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 17.13387 * 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 17.691925 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 16.38868 * 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 154.5 3C120 161.7 3C147 151.4 3C286 72.7 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