COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067i 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 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 26 35 3C147 22 13 45 24.0 40.7 -7.5 -42.5 0 1 1 0 01 26 15 01 29 34 --- 22 16 45 24.3 41.1 -7.4 -42.9 180 F 1 1330 02 39 23 3C147 23 26 45 32.6 49.8 -6.3 -52.2 4166 1 1 1330 02 39 03 02 42 22 --- 23 29 45 33.0 50.1 -6.2 -52.6 180 F 1 2660 02 44 22 3C120 23 31 45 13.7 97.4 -5.0 -41.7 75 1 1 2660 02 44 02 03 04 19 --- 23 51 45 17.0 101.2 -4.7 -41.1 1197 F 1 10772 03 04 37 J0423-0120 23 52 02 13.5 107.7 -4.5 -39.5 5 1 1 10772 03 04 19 03 07 36 =0420-014 23 55 02 14.0 108.3 -4.5 -39.3 180 F 1 12086 03 07 54 3C120 23 55 20 17.6 101.9 -4.6 -41.0 4 1 2 12086 03 07 36 03 27 50 --- 00 15 20 20.8 105.9 -4.3 -40.1 1197 R 1 15018 03 28 08 J0423-0120 00 15 38 17.2 112.5 -4.1 -38.1 5 1 2 15018 03 27 50 03 31 08 =0420-014 00 18 38 17.7 113.1 -4.1 -37.9 180 R 1 13703 03 31 25 3C120 00 18 55 21.4 106.7 -4.2 -40.0 4 1 2 13703 03 31 08 03 51 22 --- 00 38 55 24.6 110.8 -3.9 -38.8 1197 R 1 5608 03 53 02 3C147 00 40 36 42.6 58.0 -5.0 -61.4 58 1 2 5608 03 52 42 03 56 02 --- 00 43 36 43.0 58.3 -5.0 -61.7 180 R 1 4278 03 58 01 3C120 00 45 36 25.6 112.3 -3.8 -38.3 78 1 3 4278 03 57 41 04 17 58 --- 01 05 36 28.6 116.7 -3.5 -36.8 1197 F 1 3833 04 18 18 J0423-0120 01 05 56 24.6 123.4 -3.3 -33.9 6 1 3 3833 04 17 58 04 21 18 =0420-014 01 08 56 25.1 124.1 -3.2 -33.6 180 F 1 5165 04 21 38 3C120 01 09 17 29.2 117.6 -3.4 -36.5 6 1 3 5165 04 21 18 04 41 35 --- 01 29 17 32.1 122.3 -3.1 -34.5 1197 F 1 13278 04 41 55 J0423-0120 01 29 37 27.8 128.9 -2.9 -31.3 6 1 3 13278 04 41 35 04 44 54 =0420-014 01 32 37 28.2 129.7 -2.8 -30.9 180 F 1 14609 04 45 14 3C120 01 32 57 32.6 123.2 -3.0 -34.1 5 1 4 14609 04 44 54 05 05 11 --- 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 05 06 59 3C147 01 54 45 53.4 65.3 -3.8 -70.1 60 1 4 12482 05 06 39 05 09 58 --- 01 57 45 53.9 65.6 -3.8 -70.5 180 R 1 11151 05 11 58 3C120 01 59 45 36.2 130.0 -2.6 -30.9 71 1 4 11151 05 11 38 05 31 55 --- 02 19 45 38.6 135.4 -2.2 -28.1 1197 R 1 3040 05 32 15 J0423-0120 02 20 05 33.7 141.9 -2.1 -24.3 5 1 4 3040 05 31 55 05 35 14 =0420-014 02 23 05 34.1 142.8 -2.0 -23.8 180 R 1 1708 05 35 35 3C120 02 23 25 39.1 136.5 -2.2 -27.5 4 1 5 1708 05 35 14 05 55 31 --- 02 43 25 41.2 142.3 -1.8 -24.2 1197 F 1 6405 05 55 52 J0423-0120 02 43 46 36.0 148.6 -1.7 -20.3 4 1 5 6405 05 55 31 05 58 51 =0420-014 02 46 46 36.3 149.5 -1.6 -19.8 180 F 1 7737 05 59 11 3C120 02 47 06 41.6 143.4 -1.8 -23.5 4 1 5 7737 05 58 51 06 19 08 --- 03 07 06 43.4 149.7 -1.4 -19.8 1197 F 1 15850 06 20 56 3C147 03 08 54 65.0 71.5 -2.6 -79.0 50 1 5 15850 06 20 36 06 23 55 --- 03 11 54 65.4 71.7 -2.5 -79.4 180 F 1 17180 06 25 55 3C120 03 13 54 44.0 151.9 -1.3 -18.4 60 1 6 17180 06 25 35 06 45 52 --- 03 33 54 45.4 158.7 -1.0 -14.1 1197 R 1 9069 06 46 12 J0423-0120 03 34 14 39.4 164.0 -0.8 -10.6 2 1 6 9069 06 45 52 06 49 12 =0420-014 03 37 14 39.5 164.9 -0.8 -10.0 180 R 1 7737 06 49 32 3C120 03 37 35 45.6 159.9 -0.9 -13.3 2 1 7 7737 06 49 12 07 09 28 --- 03 57 35 46.6 167.0 -0.6 -8.7 1197 F 1 376 07 09 49 J0423-0120 03 57 55 40.2 171.6 -0.4 -5.6 2 1 7 376 07 09 28 07 12 48 =0420-014 04 00 55 40.3 172.6 -0.4 -4.9 180 F 1 1709 07 13 09 3C120 04 01 15 46.7 168.3 -0.5 -7.8 1 1 7 1709 07 12 48 07 33 05 --- 04 21 15 47.2 175.6 -0.2 -3.0 1197 F 1 9821 07 35 10 3C147 04 23 20 76.9 75.0 -1.3 -89.9 52 1 7 9821 07 34 50 07 38 10 --- 04 26 20 77.4 75.0 -1.3 -90.5 180 F 1 11151 07 40 18 3C120 04 28 29 47.2 178.2 -0.1 -1.2 53 1 8 11151 07 39 58 08 00 14 --- 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 08 00 35 J0423-0120 04 48 49 40.2 188.3 0.4 5.5 1 1 8 15937 08 00 14 08 03 34 =0420-014 04 51 49 40.2 189.3 0.5 6.2 180 R 1 14605 08 03 55 3C120 04 52 10 47.0 186.9 0.3 4.6 0 1 8 14605 08 03 34 08 23 51 --- 05 12 10 46.4 194.1 0.6 9.4 1197 R 1 6492 08 24 12 J0423-0120 05 12 30 39.4 195.9 0.8 10.6 0 1 8 6492 08 23 51 08 27 11 =0420-014 05 15 30 39.3 196.9 0.9 11.2 180 R 1 5160 08 27 31 3C120 05 15 50 46.3 195.4 0.7 10.2 0 1 9 5160 08 27 11 08 47 28 --- 05 35 50 45.2 202.3 1.0 14.8 1197 F 1 2953 08 49 32 3C147 05 37 54 88.1 25.0 -0.1 -154.0 0 1 9 2953 08 49 12 08 52 31 --- 05 40 54 88.2 10.6 0.0 -169.0 180 F 1 4283 08 54 47 3C120 05 43 10 44.7 204.8 1.2 16.4 0 1 9 4283 08 54 27 09 14 44 --- 06 03 10 43.1 211.4 1.5 20.4 1197 F 1 12395 09 15 04 J0423-0120 06 03 31 36.0 211.5 1.7 20.4 0 1 9 12395 09 14 44 09 18 03 =0420-014 06 06 31 35.7 212.3 1.7 20.9 180 F 1 13727 09 18 24 3C120 06 06 51 42.8 212.6 1.6 21.1 0 1 10 13727 09 18 03 09 38 20 --- 06 26 51 40.9 218.7 1.9 24.8 1197 R 1 13360 09 38 41 J0423-0120 06 27 11 33.7 218.2 2.1 24.4 0 1 10 13360 09 38 20 09 41 40 =0420-014 06 30 11 33.4 219.0 2.1 24.8 180 R 1 12028 09 42 00 3C120 06 30 32 40.5 219.8 2.0 25.4 0 1 10 12028 09 41 40 10 01 57 --- 06 50 32 38.2 225.5 2.3 28.6 1197 R 1 3915 10 03 45 3C147 06 52 19 78.5 285.1 1.2 92.0 21 1 10 3915 10 03 25 10 06 44 --- 06 55 19 78.0 285.0 1.2 91.3 180 R 1 2585 10 09 12 3C286 06 57 48 17.1 423.1 -6.6 -43.7 20 1 10 2585 10 08 52 10 12 12 --- 07 00 48 17.5 423.6 -6.5 -43.9 180 R 1 1255 10 14 27 3C120 07 03 04 36.7 229.0 2.5 30.4 0 1 11 1255 10 14 07 10 34 24 --- 07 23 04 34.1 234.2 2.8 32.9 1197 F 1 6856 10 34 44 J0423-0120 07 23 24 27.0 232.5 3.0 32.0 0 1 11 6856 10 34 24 10 37 44 =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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 10 38 04 3C120 07 26 44 33.6 235.1 2.9 33.3 0 1 11 8188 10 37 44 10 58 01 --- 07 46 44 30.8 239.9 3.2 35.5 1197 F 1 16301 10 58 21 J0423-0120 07 47 04 23.8 238.0 3.4 34.5 0 1 12 16301 10 58 01 11 01 20 =0420-014 07 50 04 23.4 238.7 3.4 34.8 180 R 1 17570 11 01 40 3C120 07 50 24 30.2 240.8 3.3 35.8 0 1 12 17570 11 01 20 11 21 37 --- 08 10 24 27.2 245.4 3.6 37.5 1197 R 1 9460 11 23 06 3C147 08 11 53 65.8 288.2 2.5 79.6 6 1 12 9460 11 22 46 11 26 05 --- 08 14 53 65.3 288.4 2.5 79.2 180 R 1 8130 11 27 56 3C286 08 16 45 29.4 435.9 -5.2 -48.7 6 1 12 8130 11 27 36 11 30 55 --- 08 19 45 29.9 436.4 -5.2 -48.8 180 R 1 6800 11 33 07 3C120 08 21 57 25.5 247.9 3.8 38.4 0 1 13 6800 11 32 47 11 53 04 --- 08 41 57 22.3 252.1 4.1 39.6 1197 F 1 1312 11 53 23 J0423-0120 08 42 16 15.5 249.7 4.3 38.8 0 1 13 1312 11 53 04 11 56 23 =0420-014 08 45 16 15.1 250.3 4.4 39.0 180 F 1 2639 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 28.280918 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 55.31203 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 24.098907 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.73265 * 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 55.155753 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 16.51553 * 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 17.562950 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 17.71993 * 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 156.4 3C120 163.3 3C147 149.3 3C286 68.8 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