COVER INFORMATION Station: VLBA_BR (Code Br ) 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_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) ---------------------------------------------------------------------------------------- --- 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 22 13 45 24.0 40.7 -7.5 -42.5 0 1 1 0 01 06 35 01 09 55 --- 22 16 45 24.3 41.1 -7.4 -42.9 180 F 1 1330 02 19 43 3C147 23 26 45 32.6 49.8 -6.3 -52.2 4166 1 1 1330 02 19 23 02 22 43 --- 23 29 45 33.0 50.1 -6.2 -52.6 180 F 1 2660 02 24 43 3C120 23 31 45 13.7 97.4 -5.0 -41.7 75 1 1 2660 02 24 23 02 44 39 --- 23 51 45 17.0 101.2 -4.7 -41.1 1197 F 1 10772 02 44 57 J0423-0120 23 52 02 13.5 107.7 -4.5 -39.5 5 1 1 10772 02 44 39 02 47 57 =0420-014 23 55 02 14.0 108.3 -4.5 -39.3 180 F 1 12086 02 48 14 3C120 23 55 20 17.6 101.9 -4.6 -41.0 4 1 2 12086 02 47 57 03 08 11 --- 00 15 20 20.8 105.9 -4.3 -40.1 1197 R 1 15018 03 08 29 J0423-0120 00 15 38 17.2 112.5 -4.1 -38.1 5 1 2 15018 03 08 11 03 11 28 =0420-014 00 18 38 17.7 113.1 -4.1 -37.9 180 R 1 13703 03 11 46 3C120 00 18 55 21.4 106.7 -4.2 -40.0 4 1 2 13703 03 11 28 03 31 42 --- 00 38 55 24.6 110.8 -3.9 -38.8 1197 R 1 5608 03 33 23 3C147 00 40 36 42.6 58.0 -5.0 -61.4 58 1 2 5608 03 33 03 03 36 22 --- 00 43 36 43.0 58.3 -5.0 -61.7 180 R 1 4278 03 38 22 3C120 00 45 36 25.6 112.3 -3.8 -38.3 78 1 3 4278 03 38 02 03 58 19 --- 01 05 36 28.6 116.7 -3.5 -36.8 1197 F 1 3833 03 58 39 J0423-0120 01 05 56 24.6 123.4 -3.3 -33.9 6 1 3 3833 03 58 19 04 01 38 =0420-014 01 08 56 25.1 124.1 -3.2 -33.6 180 F 1 5165 04 01 59 3C120 01 09 17 29.2 117.6 -3.4 -36.5 6 1 3 5165 04 01 38 04 21 55 --- 01 29 17 32.1 122.3 -3.1 -34.5 1197 F 1 13278 04 22 15 J0423-0120 01 29 37 27.8 128.9 -2.9 -31.3 6 1 3 13278 04 21 55 04 25 15 =0420-014 01 32 37 28.2 129.7 -2.8 -30.9 180 F 1 14609 04 25 35 3C120 01 32 57 32.6 123.2 -3.0 -34.1 5 1 4 14609 04 25 15 04 45 31 --- 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 04 47 19 3C147 01 54 45 53.4 65.3 -3.8 -70.1 60 1 4 12482 04 46 59 04 50 19 --- 01 57 45 53.9 65.6 -3.8 -70.5 180 R 1 11151 04 52 18 3C120 01 59 45 36.2 130.0 -2.6 -30.9 71 1 4 11151 04 51 58 05 12 15 --- 02 19 45 38.6 135.4 -2.2 -28.1 1197 R 1 3040 05 12 35 J0423-0120 02 20 05 33.7 141.9 -2.1 -24.3 5 1 4 3040 05 12 15 05 15 35 =0420-014 02 23 05 34.1 142.8 -2.0 -23.8 180 R 1 1708 05 15 55 3C120 02 23 25 39.1 136.5 -2.2 -27.5 4 1 5 1708 05 15 35 05 35 52 --- 02 43 25 41.2 142.3 -1.8 -24.2 1197 F 1 6405 05 36 12 J0423-0120 02 43 46 36.0 148.6 -1.7 -20.3 4 1 5 6405 05 35 52 05 39 12 =0420-014 02 46 46 36.3 149.5 -1.6 -19.8 180 F 1 7737 05 39 32 3C120 02 47 06 41.6 143.4 -1.8 -23.5 4 1 5 7737 05 39 12 05 59 29 --- 03 07 06 43.4 149.7 -1.4 -19.8 1197 F 1 15850 06 01 16 3C147 03 08 54 65.0 71.5 -2.6 -79.0 50 1 5 15850 06 00 56 06 04 16 --- 03 11 54 65.4 71.7 -2.5 -79.4 180 F 1 17180 06 06 15 3C120 03 13 54 44.0 151.9 -1.3 -18.4 60 1 6 17180 06 05 55 06 26 12 --- 03 33 54 45.4 158.7 -1.0 -14.1 1197 R 1 9069 06 26 33 J0423-0120 03 34 14 39.4 164.0 -0.8 -10.6 2 1 6 9069 06 26 12 06 29 32 =0420-014 03 37 14 39.5 164.9 -0.8 -10.0 180 R 1 7737 06 29 52 3C120 03 37 35 45.6 159.9 -0.9 -13.3 2 1 7 7737 06 29 32 06 49 49 --- 03 57 35 46.6 167.0 -0.6 -8.7 1197 F 1 376 06 50 09 J0423-0120 03 57 55 40.2 171.6 -0.4 -5.6 2 1 7 376 06 49 49 06 53 09 =0420-014 04 00 55 40.3 172.6 -0.4 -4.9 180 F 1 1709 06 53 29 3C120 04 01 15 46.7 168.3 -0.5 -7.8 1 1 7 1709 06 53 09 07 13 26 --- 04 21 15 47.2 175.6 -0.2 -3.0 1197 F 1 9821 07 15 31 3C147 04 23 20 76.9 75.0 -1.3 -89.9 52 1 7 9821 07 15 11 07 18 30 --- 04 26 20 77.4 75.0 -1.3 -90.5 180 F 1 11151 07 20 38 3C120 04 28 29 47.2 178.2 -0.1 -1.2 53 1 8 11151 07 20 18 07 40 35 --- 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 07 40 55 J0423-0120 04 48 49 40.2 188.3 0.4 5.5 1 1 8 15937 07 40 35 07 43 55 =0420-014 04 51 49 40.2 189.3 0.5 6.2 180 R 1 14605 07 44 15 3C120 04 52 10 47.0 186.9 0.3 4.6 0 1 8 14605 07 43 55 08 04 12 --- 05 12 10 46.4 194.1 0.6 9.4 1197 R 1 6492 08 04 32 J0423-0120 05 12 30 39.4 195.9 0.8 10.6 0 1 8 6492 08 04 12 08 07 31 =0420-014 05 15 30 39.3 196.9 0.9 11.2 180 R 1 5160 08 07 52 3C120 05 15 50 46.3 195.4 0.7 10.2 0 1 9 5160 08 07 31 08 27 48 --- 05 35 50 45.2 202.3 1.0 14.8 1197 F 1 2953 08 29 52 3C147 05 37 54 88.1 25.0 -0.1 -154.0 0 1 9 2953 08 29 32 08 32 52 --- 05 40 54 88.2 10.7 0.0 -169.0 180 F 1 4283 08 35 07 3C120 05 43 10 44.7 204.8 1.2 16.4 0 1 9 4283 08 34 47 08 55 04 --- 06 03 10 43.1 211.4 1.5 20.4 1197 F 1 12395 08 55 24 J0423-0120 06 03 31 36.0 211.5 1.7 20.4 0 1 9 12395 08 55 04 08 58 24 =0420-014 06 06 31 35.7 212.3 1.7 20.9 180 F 1 13727 08 58 44 3C120 06 06 51 42.8 212.6 1.6 21.1 0 1 10 13727 08 58 24 09 18 41 --- 06 26 51 40.9 218.7 1.9 24.8 1197 R 1 13360 09 19 01 J0423-0120 06 27 11 33.7 218.2 2.1 24.4 0 1 10 13360 09 18 41 09 22 01 =0420-014 06 30 11 33.4 219.0 2.1 24.8 180 R 1 12028 09 22 21 3C120 06 30 32 40.5 219.8 2.0 25.4 0 1 10 12028 09 22 01 09 42 18 --- 06 50 32 38.2 225.5 2.3 28.6 1197 R 1 3915 09 44 05 3C147 06 52 19 78.5 285.1 1.2 92.0 21 1 10 3915 09 43 45 09 47 05 --- 06 55 19 78.0 285.0 1.2 91.3 180 R 1 2585 09 49 33 3C286 06 57 48 17.1 423.1 -6.6 -43.7 20 1 10 2585 09 49 13 09 52 32 --- 07 00 48 17.5 423.6 -6.5 -43.9 180 R 1 1255 09 54 48 3C120 07 03 04 36.7 229.0 2.5 30.4 0 1 11 1255 09 54 28 10 14 44 --- 07 23 04 34.1 234.2 2.8 32.9 1197 F 1 6856 10 15 05 J0423-0120 07 23 24 27.0 232.5 3.0 32.0 0 1 11 6856 10 14 44 10 18 04 =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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 10 18 24 3C120 07 26 44 33.6 235.1 2.9 33.3 0 1 11 8188 10 18 04 10 38 21 --- 07 46 44 30.8 239.9 3.2 35.5 1197 F 1 16301 10 38 41 J0423-0120 07 47 04 23.8 238.0 3.4 34.5 0 1 12 16301 10 38 21 10 41 41 =0420-014 07 50 04 23.4 238.7 3.4 34.8 180 R 1 17570 10 42 00 3C120 07 50 24 30.2 240.8 3.3 35.8 0 1 12 17570 10 41 41 11 01 57 --- 08 10 24 27.2 245.4 3.6 37.5 1197 R 1 9460 11 03 26 3C147 08 11 53 65.8 288.2 2.5 79.6 6 1 12 9460 11 03 06 11 06 26 --- 08 14 53 65.3 288.4 2.5 79.2 180 R 1 8130 11 08 16 3C286 08 16 44 29.4 435.9 -5.2 -48.7 6 1 12 8130 11 07 56 11 11 16 --- 08 19 44 29.9 436.4 -5.2 -48.8 180 R 1 6800 11 13 28 3C120 08 21 57 25.5 247.9 3.8 38.4 0 1 13 6800 11 13 08 11 33 24 --- 08 41 57 22.3 252.1 4.1 39.6 1197 F 1 1312 11 33 44 J0423-0120 08 42 16 15.5 249.7 4.3 38.8 0 1 13 1312 11 33 24 11 36 43 =0420-014 08 45 16 15.1 250.3 4.4 39.0 180 F 1 2639 11 37 03 3C120 08 45 36 21.8 252.9 4.2 39.8 0 1 13 2639 11 36 43 11 57 00 --- 09 05 36 18.5 256.9 4.5 40.8 1197 F 1 10747 11 58 23 3C147 09 06 59 57.1 292.6 3.4 72.9 0 1 13 10747 11 58 03 12 01 22 --- 09 09 59 56.7 292.8 3.5 72.6 180 F 1 12077 12 03 47 3C286 09 12 25 38.6 445.3 -4.3 -50.5 38 1 13 12077 12 03 27 12 06 47 --- 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 28.312279 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