COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067l 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_BR (Code Br ) 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 9 Dec 2003 Day 343 --- 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 02 59 3C147 22 13 45 24.0 40.7 -7.5 -42.5 0 1 1 0 01 02 39 01 05 59 --- 22 16 45 24.3 41.1 -7.4 -42.9 180 F 1 1330 02 15 48 3C147 23 26 45 32.6 49.8 -6.3 -52.2 4166 1 1 1330 02 15 28 02 18 47 --- 23 29 45 33.0 50.1 -6.2 -52.6 180 F 1 2660 02 20 47 3C120 23 31 45 13.7 97.4 -5.0 -41.7 75 1 1 2660 02 20 27 02 40 43 --- 23 51 45 17.0 101.2 -4.7 -41.1 1197 F 1 10772 02 41 01 J0423-0120 23 52 02 13.5 107.7 -4.5 -39.5 5 1 1 10772 02 40 43 02 44 01 =0420-014 23 55 02 14.0 108.3 -4.5 -39.3 180 F 1 12086 02 44 18 3C120 23 55 20 17.6 101.9 -4.6 -41.0 4 1 2 12086 02 44 01 03 04 15 --- 00 15 20 20.8 105.9 -4.3 -40.1 1197 R 1 15018 03 04 33 J0423-0120 00 15 38 17.2 112.5 -4.1 -38.1 5 1 2 15018 03 04 15 03 07 32 =0420-014 00 18 38 17.7 113.1 -4.1 -37.9 180 R 1 13703 03 07 50 3C120 00 18 55 21.4 106.7 -4.2 -40.0 4 1 2 13703 03 07 32 03 27 46 --- 00 38 55 24.6 110.8 -3.9 -38.8 1197 R 1 5608 03 29 27 3C147 00 40 36 42.6 58.0 -5.0 -61.4 58 1 2 5608 03 29 07 03 32 26 --- 00 43 36 43.0 58.3 -5.0 -61.7 180 R 1 4278 03 34 26 3C120 00 45 36 25.6 112.3 -3.8 -38.3 78 1 3 4278 03 34 06 03 54 23 --- 01 05 36 28.6 116.7 -3.5 -36.8 1197 F 1 3833 03 54 43 J0423-0120 01 05 56 24.6 123.4 -3.3 -33.9 6 1 3 3833 03 54 23 03 57 42 =0420-014 01 08 56 25.1 124.1 -3.2 -33.6 180 F 1 5165 03 58 03 3C120 01 09 17 29.2 117.6 -3.4 -36.5 6 1 3 5165 03 57 42 04 17 59 --- 01 29 17 32.1 122.3 -3.1 -34.5 1197 F 1 13278 04 18 19 J0423-0120 01 29 37 27.8 128.9 -2.9 -31.3 6 1 3 13278 04 17 59 04 21 19 =0420-014 01 32 37 28.2 129.7 -2.8 -30.9 180 F 1 14609 04 21 39 3C120 01 32 57 32.6 123.2 -3.0 -34.1 5 1 4 14609 04 21 19 04 41 35 --- 01 52 57 35.3 128.2 -2.7 -31.8 1197 R 1 12482 Schedule for VLBA_BR (Code Br ) 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 9 Dec 2003 Day 343 --- 04 43 23 3C147 01 54 45 53.4 65.3 -3.8 -70.1 60 1 4 12482 04 43 03 04 46 23 --- 01 57 45 53.9 65.6 -3.8 -70.5 180 R 1 11151 04 48 22 3C120 01 59 45 36.2 130.0 -2.6 -30.9 71 1 4 11151 04 48 02 05 08 19 --- 02 19 45 38.6 135.4 -2.2 -28.1 1197 R 1 3040 05 08 39 J0423-0120 02 20 05 33.7 141.9 -2.1 -24.3 5 1 4 3040 05 08 19 05 11 39 =0420-014 02 23 05 34.1 142.8 -2.0 -23.8 180 R 1 1708 05 11 59 3C120 02 23 25 39.1 136.5 -2.2 -27.5 4 1 5 1708 05 11 39 05 31 56 --- 02 43 25 41.2 142.3 -1.8 -24.2 1197 F 1 6405 05 32 16 J0423-0120 02 43 46 36.0 148.6 -1.7 -20.3 4 1 5 6405 05 31 56 05 35 16 =0420-014 02 46 46 36.3 149.5 -1.6 -19.8 180 F 1 7737 05 35 36 3C120 02 47 06 41.6 143.4 -1.8 -23.5 4 1 5 7737 05 35 16 05 55 33 --- 03 07 06 43.4 149.7 -1.4 -19.8 1197 F 1 15850 05 57 20 3C147 03 08 54 65.0 71.5 -2.6 -79.0 50 1 5 15850 05 57 00 06 00 20 --- 03 11 54 65.4 71.7 -2.5 -79.4 180 F 1 17180 06 02 20 3C120 03 13 54 44.0 151.9 -1.3 -18.4 60 1 6 17180 06 02 00 06 22 16 --- 03 33 54 45.4 158.7 -1.0 -14.1 1197 R 1 9069 06 22 37 J0423-0120 03 34 14 39.4 164.0 -0.8 -10.6 2 1 6 9069 06 22 16 06 25 36 =0420-014 03 37 14 39.5 164.9 -0.8 -10.0 180 R 1 7737 06 25 56 3C120 03 37 35 45.6 159.9 -0.9 -13.3 2 1 7 7737 06 25 36 06 45 53 --- 03 57 35 46.6 167.0 -0.6 -8.7 1197 F 1 376 06 46 13 J0423-0120 03 57 55 40.2 171.6 -0.4 -5.6 2 1 7 376 06 45 53 06 49 13 =0420-014 04 00 55 40.3 172.6 -0.4 -4.9 180 F 1 1709 06 49 33 3C120 04 01 15 46.7 168.3 -0.5 -7.8 1 1 7 1709 06 49 13 07 09 30 --- 04 21 15 47.2 175.6 -0.2 -3.0 1197 F 1 9821 07 11 35 3C147 04 23 20 76.9 75.0 -1.3 -89.9 52 1 7 9821 07 11 15 07 14 34 --- 04 26 20 77.4 75.0 -1.3 -90.5 180 F 1 11151 07 16 42 3C120 04 28 29 47.2 178.2 -0.1 -1.2 53 1 8 11151 07 16 22 07 36 39 --- 04 48 29 47.1 185.5 0.3 3.7 1197 R 1 15937 Schedule for VLBA_BR (Code Br ) 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 9 Dec 2003 Day 343 --- 07 36 59 J0423-0120 04 48 49 40.2 188.3 0.4 5.5 1 1 8 15937 07 36 39 07 39 59 =0420-014 04 51 49 40.2 189.3 0.5 6.2 180 R 1 14605 07 40 19 3C120 04 52 10 47.0 186.9 0.3 4.6 0 1 8 14605 07 39 59 08 00 16 --- 05 12 10 46.4 194.1 0.6 9.4 1197 R 1 6492 08 00 36 J0423-0120 05 12 30 39.4 195.9 0.8 10.6 0 1 8 6492 08 00 16 08 03 36 =0420-014 05 15 30 39.3 196.9 0.9 11.2 180 R 1 5160 08 03 56 3C120 05 15 50 46.3 195.4 0.7 10.2 0 1 9 5160 08 03 36 08 23 53 --- 05 35 50 45.2 202.3 1.0 14.8 1197 F 1 2953 08 25 56 3C147 05 37 54 88.1 25.0 -0.1 -154.0 0 1 9 2953 08 25 36 08 28 56 --- 05 40 54 88.2 10.7 0.0 -169.0 180 F 1 4283 08 31 11 3C120 05 43 10 44.7 204.8 1.2 16.4 0 1 9 4283 08 30 51 08 51 08 --- 06 03 10 43.1 211.4 1.5 20.4 1197 F 1 12395 08 51 28 J0423-0120 06 03 31 36.0 211.5 1.7 20.4 0 1 9 12395 08 51 08 08 54 28 =0420-014 06 06 31 35.7 212.3 1.7 20.9 180 F 1 13727 08 54 48 3C120 06 06 51 42.8 212.6 1.6 21.1 0 1 10 13727 08 54 28 09 14 45 --- 06 26 51 40.9 218.7 1.9 24.8 1197 R 1 13360 09 15 05 J0423-0120 06 27 11 33.7 218.2 2.1 24.4 0 1 10 13360 09 14 45 09 18 05 =0420-014 06 30 11 33.4 219.0 2.1 24.8 180 R 1 12028 09 18 25 3C120 06 30 32 40.5 219.8 2.0 25.4 0 1 10 12028 09 18 05 09 38 22 --- 06 50 32 38.2 225.5 2.3 28.6 1197 R 1 3915 09 40 09 3C147 06 52 19 78.5 285.1 1.2 92.0 21 1 10 3915 09 39 49 09 43 09 --- 06 55 19 78.0 285.0 1.2 91.3 180 R 1 2585 09 45 37 3C286 06 57 48 17.1 423.1 -6.6 -43.7 20 1 10 2585 09 45 17 09 48 36 --- 07 00 48 17.5 423.6 -6.5 -43.9 180 R 1 1255 09 50 52 3C120 07 03 04 36.7 229.0 2.5 30.4 0 1 11 1255 09 50 32 10 10 49 --- 07 23 04 34.1 234.2 2.8 32.9 1197 F 1 6856 10 11 09 J0423-0120 07 23 24 27.0 232.5 3.0 32.0 0 1 11 6856 10 10 49 10 14 08 =0420-014 07 26 24 26.6 233.2 3.0 32.3 180 F 1 8188 Schedule for VLBA_BR (Code Br ) 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 9 Dec 2003 Day 343 --- 10 14 29 3C120 07 26 44 33.6 235.1 2.9 33.3 0 1 11 8188 10 14 08 10 34 25 --- 07 46 44 30.8 239.9 3.2 35.5 1197 F 1 16301 10 34 45 J0423-0120 07 47 04 23.8 238.0 3.4 34.5 0 1 12 16301 10 34 25 10 37 45 =0420-014 07 50 04 23.4 238.7 3.4 34.8 180 R 1 17570 10 38 04 3C120 07 50 24 30.2 240.8 3.3 35.8 0 1 12 17570 10 37 45 10 58 01 --- 08 10 24 27.2 245.4 3.6 37.5 1197 R 1 9460 10 59 30 3C147 08 11 53 65.8 288.2 2.5 79.6 6 1 12 9460 10 59 10 11 02 30 --- 08 14 53 65.3 288.4 2.5 79.2 180 R 1 8130 11 04 20 3C286 08 16 44 29.4 435.9 -5.2 -48.7 6 1 12 8130 11 04 00 11 07 20 --- 08 19 44 29.9 436.4 -5.2 -48.8 180 R 1 6800 11 09 32 3C120 08 21 57 25.5 247.9 3.8 38.4 0 1 13 6800 11 09 12 11 29 28 --- 08 41 57 22.3 252.1 4.1 39.6 1197 F 1 1312 11 29 48 J0423-0120 08 42 16 15.5 249.7 4.3 38.8 0 1 13 1312 11 29 28 11 32 47 =0420-014 08 45 16 15.1 250.3 4.4 39.0 180 F 1 2639 11 33 07 3C120 08 45 36 21.8 252.9 4.2 39.8 0 1 13 2639 11 32 47 11 53 04 --- 09 05 36 18.5 256.9 4.5 40.8 1197 F 1 10747 11 54 27 3C147 09 06 59 57.1 292.6 3.4 72.9 0 1 13 10747 11 54 07 11 57 26 --- 09 09 59 56.7 292.8 3.5 72.6 180 F 1 12077 11 59 52 3C286 09 12 25 38.6 445.3 -4.3 -50.5 38 1 13 12077 11 59 32 12 02 51 --- 09 15 25 39.1 445.8 -4.3 -50.6 180 F 1 13407 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 28.323908 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 56.23783 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 24.151044 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.02378 * 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 55.293829 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 17.26800 * 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 17.724738 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 16.08625 * 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 154.1 3C120 161.2 3C147 151.8 3C286 73.5 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