COVER INFORMATION Station: VLBA_LA (Code La ) 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_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) ---------------------------------------------------------------------------------------- --- 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 07 30 21.5 43.2 -6.6 -59.5 0 1 1 0 00 35 08 00 38 28 --- 23 10 30 21.9 43.5 -6.5 -60.0 180 F 1 1330 01 00 38 J0423-0120 23 32 44 13.2 101.4 -4.8 -52.7 1286 1 1 1330 01 00 18 01 03 38 =0420-014 23 35 44 13.8 101.9 -4.8 -52.6 180 F 1 2660 01 03 52 3C120 23 35 58 15.8 94.8 -5.0 -54.3 4 1 1 2660 01 03 38 01 23 49 --- 23 55 58 19.8 97.9 -4.6 -53.8 1197 F 1 10733 01 24 04 J0423-0120 23 56 13 17.8 105.2 -4.5 -51.6 4 1 1 10733 01 23 49 01 27 03 =0420-014 23 59 13 18.4 105.7 -4.4 -51.4 180 F 1 12031 01 27 19 3C120 23 59 29 20.5 98.5 -4.6 -53.7 4 1 2 12031 01 27 03 01 47 15 --- 00 19 29 24.5 101.7 -4.2 -52.9 1197 R 1 15089 01 48 16 3C147 00 20 30 32.2 48.7 -5.4 -71.0 20 1 2 15089 01 47 56 01 51 16 --- 00 23 30 32.6 48.9 -5.3 -71.5 180 R 1 13759 01 53 15 3C120 00 25 30 25.7 102.7 -4.1 -52.7 78 1 2 13759 01 52 55 02 13 12 --- 00 45 30 29.7 106.1 -3.8 -51.5 1197 R 1 5647 02 13 30 J0423-0120 00 45 48 27.3 113.8 -3.6 -47.9 7 1 2 5647 02 13 12 02 16 29 =0420-014 00 48 48 27.8 114.4 -3.6 -47.7 180 R 1 4332 02 16 47 3C120 00 49 05 30.4 106.8 -3.7 -51.3 7 1 3 4332 02 16 29 02 36 44 --- 01 09 05 34.2 110.5 -3.4 -49.7 1197 F 1 3763 02 37 01 J0423-0120 01 09 23 31.6 118.5 -3.2 -45.5 6 1 3 3763 02 36 44 02 40 01 =0420-014 01 12 23 32.1 119.1 -3.2 -45.2 180 F 1 5078 02 40 18 3C120 01 12 41 34.9 111.2 -3.3 -49.4 6 1 3 5078 02 40 01 03 00 15 --- 01 32 41 38.6 115.3 -3.0 -47.4 1197 F 1 13173 03 01 55 3C147 01 34 21 43.7 52.1 -4.1 -83.1 52 1 3 13173 03 01 35 03 04 55 --- 01 37 21 44.2 52.2 -4.1 -83.6 180 F 1 14503 03 06 55 3C120 01 39 21 39.8 116.8 -2.9 -46.7 71 1 4 14503 03 06 35 03 26 51 --- 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 03 27 12 J0423-0120 01 59 41 40.0 130.0 -2.4 -38.5 8 1 4 12585 03 26 51 03 30 11 =0420-014 02 02 41 40.5 130.7 -2.3 -37.9 180 R 1 11253 03 30 31 3C120 02 03 02 44.0 122.4 -2.5 -43.5 7 1 4 11253 03 30 11 03 50 28 --- 02 23 02 47.3 127.7 -2.2 -40.1 1197 R 1 3141 03 50 48 J0423-0120 02 23 22 43.5 136.4 -2.0 -34.0 6 1 4 3141 03 50 28 03 53 48 =0420-014 02 26 22 43.9 137.2 -2.0 -33.4 180 R 1 1810 03 54 07 3C120 02 26 42 47.9 128.7 -2.1 -39.5 6 1 5 1810 03 53 48 04 14 04 --- 02 46 42 50.9 134.8 -1.8 -35.3 1197 F 1 6300 04 15 52 3C147 02 48 30 55.7 52.0 -2.9 -97.3 47 1 5 6300 04 15 32 04 18 51 --- 02 51 30 56.1 51.9 -2.9 -98.0 180 F 1 7630 04 20 51 3C120 02 53 30 51.9 137.1 -1.7 -33.7 57 1 5 7630 04 20 31 04 40 48 --- 03 13 30 54.5 144.2 -1.3 -28.5 1197 F 1 15741 04 41 08 J0423-0120 03 13 50 49.5 152.6 -1.2 -21.9 4 1 5 15741 04 40 48 04 44 08 =0420-014 03 16 50 49.8 153.7 -1.1 -21.1 180 F 1 17073 04 44 28 3C120 03 17 10 54.9 145.6 -1.3 -27.4 4 1 6 17073 04 44 08 05 04 24 --- 03 37 10 57.0 153.7 -0.9 -21.2 1197 R 1 10014 05 04 45 J0423-0120 03 37 31 51.4 161.4 -0.8 -15.0 3 1 6 10014 05 04 24 05 07 44 =0420-014 03 40 31 51.6 162.6 -0.7 -14.1 180 R 1 8681 05 08 05 3C120 03 40 51 57.3 155.3 -0.9 -19.9 3 1 6 8681 05 07 44 05 28 01 --- 04 00 51 58.7 164.3 -0.5 -12.8 1197 R 1 569 05 29 49 3C147 04 02 39 67.0 44.4 -1.7 -118.3 22 1 7 569 05 29 29 05 32 49 --- 04 05 39 67.4 43.8 -1.6 -119.4 180 F 1 761 05 34 48 3C120 04 07 39 59.0 167.5 -0.4 -10.2 31 1 7 761 05 34 28 05 54 45 --- 04 27 39 59.6 177.2 -0.1 -2.3 1197 F 1 8873 05 55 05 J0423-0120 04 27 59 52.9 181.9 0.1 1.5 1 1 7 8873 05 54 45 05 58 05 =0420-014 04 30 59 52.9 183.1 0.1 2.5 180 F 1 10205 05 58 25 3C120 04 31 20 59.6 179.0 0.0 -0.8 1 1 8 10205 05 58 05 06 18 22 --- 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 06 18 42 J0423-0120 04 51 40 52.3 191.6 0.5 9.4 0 1 8 16882 06 18 22 06 21 42 =0420-014 04 54 40 52.2 192.8 0.5 10.3 180 R 1 15550 06 22 02 3C120 04 55 00 59.2 190.5 0.4 8.6 0 1 8 15550 06 21 42 06 41 58 --- 05 15 00 58.1 199.9 0.7 16.1 1197 R 1 7437 06 44 03 3C147 05 17 05 75.2 376.4 -0.4 -159.1 1 1 8 7437 06 43 43 06 47 03 --- 05 20 05 75.3 374.7 -0.4 -161.4 180 R 1 6107 06 49 11 3C120 05 22 14 57.6 203.1 0.8 18.7 8 1 9 6107 06 48 51 07 09 08 --- 05 42 14 55.7 211.5 1.1 25.2 1197 F 1 2005 07 09 28 J0423-0120 05 42 34 48.6 210.7 1.3 24.5 0 1 9 2005 07 09 08 07 12 27 =0420-014 05 45 34 48.2 211.8 1.4 25.3 180 F 1 3337 07 12 48 3C120 05 45 55 55.3 213.0 1.2 26.3 0 1 9 3337 07 12 27 07 32 44 --- 06 05 55 52.9 220.4 1.5 31.9 1197 F 1 11450 07 33 05 J0423-0120 06 06 15 45.8 218.5 1.7 30.3 0 1 9 11450 07 32 44 07 36 04 =0420-014 06 09 15 45.4 219.4 1.8 31.0 180 F 1 12782 07 36 24 3C120 06 09 35 52.4 221.7 1.6 32.8 0 1 10 12782 07 36 04 07 56 21 --- 06 29 35 49.5 228.1 1.9 37.4 1197 R 1 14305 07 58 25 3C147 06 31 40 73.4 331.6 0.8 143.3 49 1 10 14305 07 58 05 08 01 25 --- 06 34 40 73.1 330.3 0.9 141.4 180 R 1 12975 08 03 40 3C120 06 36 55 48.4 230.3 2.1 38.9 63 1 10 12975 08 03 20 08 23 37 --- 06 56 55 45.2 235.9 2.4 42.4 1197 R 1 4864 08 23 57 J0423-0120 06 57 16 38.4 232.5 2.6 40.1 1 1 10 4864 08 23 37 08 26 57 =0420-014 07 00 16 38.0 233.3 2.6 40.6 180 R 1 3531 08 27 17 3C120 07 00 36 44.5 236.8 2.5 43.0 1 1 11 3531 08 26 57 08 47 14 --- 07 20 36 41.1 241.6 2.8 45.8 1197 F 1 4581 08 47 34 J0423-0120 07 20 56 34.5 238.0 3.0 43.5 1 1 11 4581 08 47 14 08 50 33 =0420-014 07 23 56 34.0 238.7 3.0 43.9 180 F 1 5914 08 50 54 3C120 07 24 17 40.4 242.5 2.8 46.3 1 1 11 5914 08 50 33 09 10 50 --- 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 09 12 38 3C147 07 46 04 63.7 311.9 2.1 110.6 48 1 11 14026 09 12 18 09 15 37 --- 07 49 04 63.2 311.6 2.1 109.7 180 F 1 15356 09 18 05 3C286 07 51 33 21.0 426.8 -5.7 -60.0 57 1 11 15356 09 17 45 09 21 05 --- 07 54 33 21.6 427.2 -5.6 -60.2 180 F 1 16686 09 23 20 3C120 07 56 49 34.4 249.3 3.4 49.7 11 1 12 16686 09 23 00 09 43 17 --- 08 16 49 30.5 253.1 3.7 51.2 1197 R 1 10402 09 43 38 J0423-0120 08 17 09 24.3 249.1 3.9 49.3 2 1 12 10402 09 43 17 09 46 37 =0420-014 08 20 09 23.7 249.7 3.9 49.5 180 R 1 9070 09 46 57 3C120 08 20 29 29.8 253.7 3.8 51.5 2 1 12 9070 09 46 37 10 06 54 --- 08 40 29 25.9 257.2 4.1 52.6 1197 R 1 957 10 07 14 J0423-0120 08 40 49 19.7 253.2 4.3 51.0 2 1 13 957 10 06 54 10 10 13 =0420-014 08 43 49 19.2 253.7 4.3 51.2 180 F 1 372 10 10 33 3C120 08 44 09 25.2 257.8 4.2 52.8 2 1 13 372 10 10 13 10 30 30 --- 09 04 09 21.2 261.0 4.5 53.6 1197 F 1 8482 10 31 59 3C147 09 05 38 51.1 307.4 3.4 91.5 23 1 13 8482 10 31 39 10 34 58 --- 09 08 38 50.6 307.4 3.4 90.9 180 F 1 9812 10 36 49 3C286 09 10 30 36.1 435.6 -4.3 -65.8 19 1 13 9812 10 36 29 10 39 49 --- 09 13 30 36.7 436.0 -4.3 -66.0 180 F 1 11142 10 42 00 3C120 09 15 42 18.9 262.9 4.7 54.0 10 1 14 11142 10 41 40 11 01 57 --- 09 35 42 14.8 265.9 5.0 54.4 1197 R 1 15947 11 26 55 3C147 10 00 44 42.3 308.2 4.3 81.5 1438 1 14 15947 11 26 35 11 29 55 --- 10 03 44 41.8 308.3 4.3 81.0 180 R 1 14617 11 32 20 3C286 10 06 10 47.2 441.8 -3.4 -68.7 50 1 14 14617 11 32 00 11 35 20 --- 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 28.382419 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