COVER INFORMATION Station: VLBA_BR (Code Br ) 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_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 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 22 13 45 24.0 40.7 -7.5 -42.5 0 1 1 0 00 35 08 00 38 28 --- 22 16 45 24.3 41.1 -7.4 -42.9 180 F 1 1330 01 48 16 3C147 23 26 45 32.6 49.8 -6.3 -52.2 4166 1 1 1330 01 47 56 01 51 16 --- 23 29 45 33.0 50.1 -6.2 -52.6 180 F 1 2660 01 53 15 3C120 23 31 45 13.7 97.4 -5.0 -41.7 75 1 1 2660 01 52 55 02 13 12 --- 23 51 45 17.0 101.2 -4.7 -41.1 1197 F 1 10772 02 13 30 J0423-0120 23 52 02 13.5 107.7 -4.5 -39.5 5 1 1 10772 02 13 12 02 16 29 =0420-014 23 55 02 14.0 108.3 -4.5 -39.3 180 F 1 12086 02 16 47 3C120 23 55 20 17.6 101.9 -4.6 -41.0 4 1 2 12086 02 16 29 02 36 44 --- 00 15 20 20.8 105.9 -4.3 -40.1 1197 R 1 15018 02 37 01 J0423-0120 00 15 38 17.2 112.5 -4.1 -38.1 5 1 2 15018 02 36 44 02 40 01 =0420-014 00 18 38 17.7 113.1 -4.1 -37.9 180 R 1 13703 02 40 18 3C120 00 18 55 21.4 106.7 -4.2 -40.0 4 1 2 13703 02 40 01 03 00 15 --- 00 38 55 24.6 110.8 -3.9 -38.8 1197 R 1 5608 03 01 55 3C147 00 40 36 42.6 58.0 -5.0 -61.4 58 1 2 5608 03 01 35 03 04 55 --- 00 43 36 43.0 58.3 -5.0 -61.7 180 R 1 4278 03 06 55 3C120 00 45 36 25.6 112.3 -3.8 -38.3 78 1 3 4278 03 06 35 03 26 51 --- 01 05 36 28.6 116.7 -3.5 -36.8 1197 F 1 3833 03 27 12 J0423-0120 01 05 56 24.6 123.4 -3.3 -33.9 6 1 3 3833 03 26 51 03 30 11 =0420-014 01 08 56 25.1 124.1 -3.2 -33.6 180 F 1 5165 03 30 31 3C120 01 09 17 29.2 117.6 -3.4 -36.5 6 1 3 5165 03 30 11 03 50 28 --- 01 29 17 32.1 122.3 -3.1 -34.5 1197 F 1 13278 03 50 48 J0423-0120 01 29 37 27.8 128.9 -2.9 -31.3 6 1 3 13278 03 50 28 03 53 48 =0420-014 01 32 37 28.2 129.7 -2.8 -30.9 180 F 1 14609 03 54 07 3C120 01 32 57 32.6 123.2 -3.0 -34.1 5 1 4 14609 03 53 48 04 14 04 --- 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 16 Dec 2003 Day 350 --- 04 15 52 3C147 01 54 45 53.4 65.3 -3.8 -70.1 60 1 4 12482 04 15 32 04 18 51 --- 01 57 45 53.9 65.6 -3.8 -70.5 180 R 1 11151 04 20 51 3C120 01 59 45 36.2 130.0 -2.6 -30.9 71 1 4 11151 04 20 31 04 40 48 --- 02 19 45 38.6 135.4 -2.2 -28.1 1197 R 1 3040 04 41 08 J0423-0120 02 20 05 33.7 141.9 -2.1 -24.3 5 1 4 3040 04 40 48 04 44 08 =0420-014 02 23 05 34.1 142.8 -2.0 -23.8 180 R 1 1708 04 44 28 3C120 02 23 25 39.1 136.5 -2.2 -27.5 4 1 5 1708 04 44 08 05 04 24 --- 02 43 25 41.2 142.3 -1.8 -24.2 1197 F 1 6405 05 04 45 J0423-0120 02 43 46 36.0 148.6 -1.7 -20.3 4 1 5 6405 05 04 24 05 07 44 =0420-014 02 46 46 36.3 149.5 -1.6 -19.8 180 F 1 7737 05 08 05 3C120 02 47 06 41.6 143.4 -1.8 -23.5 4 1 5 7737 05 07 44 05 28 01 --- 03 07 06 43.4 149.7 -1.4 -19.8 1197 F 1 15850 05 29 49 3C147 03 08 54 65.0 71.5 -2.6 -79.0 50 1 5 15850 05 29 29 05 32 49 --- 03 11 54 65.4 71.7 -2.5 -79.4 180 F 1 17180 05 34 48 3C120 03 13 54 44.0 151.9 -1.3 -18.4 60 1 6 17180 05 34 28 05 54 45 --- 03 33 54 45.4 158.7 -1.0 -14.1 1197 R 1 9069 05 55 05 J0423-0120 03 34 14 39.4 164.0 -0.8 -10.6 2 1 6 9069 05 54 45 05 58 05 =0420-014 03 37 14 39.5 164.9 -0.8 -10.0 180 R 1 7737 05 58 25 3C120 03 37 35 45.6 159.9 -0.9 -13.3 2 1 7 7737 05 58 05 06 18 22 --- 03 57 35 46.6 167.0 -0.6 -8.7 1197 F 1 376 06 18 42 J0423-0120 03 57 55 40.2 171.6 -0.4 -5.6 2 1 7 376 06 18 22 06 21 42 =0420-014 04 00 55 40.3 172.6 -0.4 -4.9 180 F 1 1709 06 22 02 3C120 04 01 15 46.7 168.3 -0.5 -7.8 1 1 7 1709 06 21 42 06 41 58 --- 04 21 15 47.2 175.6 -0.2 -3.0 1197 F 1 9821 06 44 03 3C147 04 23 20 76.9 75.0 -1.3 -89.9 52 1 7 9821 06 43 43 06 47 03 --- 04 26 20 77.4 75.0 -1.3 -90.5 180 F 1 11151 06 49 11 3C120 04 28 29 47.2 178.2 -0.1 -1.2 53 1 8 11151 06 48 51 07 09 08 --- 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 16 Dec 2003 Day 350 --- 07 09 28 J0423-0120 04 48 49 40.2 188.3 0.4 5.5 1 1 8 15937 07 09 08 07 12 27 =0420-014 04 51 49 40.2 189.3 0.5 6.2 180 R 1 14605 07 12 48 3C120 04 52 10 47.0 186.9 0.3 4.6 0 1 8 14605 07 12 27 07 32 44 --- 05 12 10 46.4 194.1 0.6 9.4 1197 R 1 6492 07 33 05 J0423-0120 05 12 30 39.4 195.9 0.8 10.6 0 1 8 6492 07 32 44 07 36 04 =0420-014 05 15 30 39.3 196.9 0.9 11.2 180 R 1 5160 07 36 24 3C120 05 15 50 46.3 195.4 0.7 10.2 0 1 9 5160 07 36 04 07 56 21 --- 05 35 50 45.2 202.3 1.0 14.8 1197 F 1 2953 07 58 25 3C147 05 37 54 88.1 25.0 -0.1 -154.0 0 1 9 2953 07 58 05 08 01 25 --- 05 40 54 88.2 10.7 0.0 -168.9 180 F 1 4283 08 03 40 3C120 05 43 10 44.7 204.8 1.2 16.4 0 1 9 4283 08 03 20 08 23 37 --- 06 03 10 43.1 211.4 1.5 20.4 1197 F 1 12395 08 23 57 J0423-0120 06 03 31 36.0 211.5 1.7 20.4 0 1 9 12395 08 23 37 08 26 57 =0420-014 06 06 31 35.7 212.3 1.7 20.9 180 F 1 13727 08 27 17 3C120 06 06 51 42.8 212.6 1.6 21.1 0 1 10 13727 08 26 57 08 47 14 --- 06 26 51 40.9 218.7 1.9 24.8 1197 R 1 13360 08 47 34 J0423-0120 06 27 11 33.7 218.2 2.1 24.4 0 1 10 13360 08 47 14 08 50 33 =0420-014 06 30 11 33.4 219.0 2.1 24.8 180 R 1 12028 08 50 54 3C120 06 30 32 40.5 219.8 2.0 25.4 0 1 10 12028 08 50 33 09 10 50 --- 06 50 32 38.2 225.5 2.3 28.6 1197 R 1 3915 09 12 38 3C147 06 52 19 78.5 285.1 1.2 92.0 21 1 10 3915 09 12 18 09 15 37 --- 06 55 19 78.0 285.0 1.2 91.3 180 R 1 2585 09 18 05 3C286 06 57 48 17.1 423.1 -6.6 -43.7 20 1 10 2585 09 17 45 09 21 05 --- 07 00 48 17.5 423.6 -6.5 -43.9 180 R 1 1255 09 23 20 3C120 07 03 04 36.7 229.0 2.5 30.4 0 1 11 1255 09 23 00 09 43 17 --- 07 23 04 34.1 234.2 2.8 32.9 1197 F 1 6856 09 43 38 J0423-0120 07 23 24 27.0 232.5 3.0 32.0 0 1 11 6856 09 43 17 09 46 37 =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 16 Dec 2003 Day 350 --- 09 46 57 3C120 07 26 44 33.6 235.1 2.9 33.3 0 1 11 8188 09 46 37 10 06 54 --- 07 46 44 30.8 239.9 3.2 35.5 1197 F 1 16301 10 07 14 J0423-0120 07 47 04 23.8 238.0 3.4 34.5 0 1 12 16301 10 06 54 10 10 13 =0420-014 07 50 04 23.4 238.7 3.4 34.8 180 R 1 17570 10 10 33 3C120 07 50 24 30.2 240.8 3.3 35.8 0 1 12 17570 10 10 13 10 30 30 --- 08 10 24 27.2 245.4 3.6 37.5 1197 R 1 9460 10 31 59 3C147 08 11 53 65.8 288.2 2.5 79.6 6 1 12 9460 10 31 39 10 34 58 --- 08 14 53 65.3 288.4 2.5 79.2 180 R 1 8130 10 36 49 3C286 08 16 44 29.4 435.9 -5.2 -48.7 6 1 12 8130 10 36 29 10 39 49 --- 08 19 44 29.9 436.4 -5.2 -48.8 180 R 1 6800 10 42 00 3C120 08 21 57 25.5 247.9 3.8 38.4 0 1 13 6800 10 41 40 11 01 57 --- 08 41 57 22.3 252.1 4.1 39.6 1197 F 1 1312 11 02 17 J0423-0120 08 42 16 15.5 249.7 4.3 38.8 0 1 13 1312 11 01 57 11 05 16 =0420-014 08 45 16 15.1 250.3 4.4 39.0 180 F 1 2639 11 05 36 3C120 08 45 36 21.8 252.9 4.2 39.8 0 1 13 2639 11 05 16 11 25 32 --- 09 05 36 18.5 256.9 4.5 40.8 1197 F 1 10747 11 26 55 3C147 09 06 59 57.1 292.6 3.4 72.9 0 1 13 10747 11 26 35 11 29 55 --- 09 09 59 56.7 292.8 3.5 72.6 180 F 1 12077 11 32 20 3C286 09 12 25 38.6 445.3 -4.3 -50.5 38 1 13 12077 11 32 00 11 35 20 --- 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 28.382419 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