COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067o 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 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 02 11 3C147 22 23 45 25.1 42.0 -7.3 -43.9 0 1 1 0 00 01 51 00 05 11 --- 22 26 45 25.4 42.4 -7.3 -44.3 180 F 1 1330 01 15 05 3C147 23 36 50 33.9 50.9 -6.1 -53.5 4171 1 1 1330 01 14 45 01 18 04 --- 23 39 50 34.3 51.3 -6.1 -53.9 180 F 1 2660 01 20 04 3C120 23 41 50 15.4 99.3 -4.9 -41.4 76 1 1 2660 01 19 44 01 40 00 --- 00 01 50 18.6 103.2 -4.5 -40.7 1197 F 1 10772 01 40 18 J0423-0120 00 02 08 15.1 109.7 -4.4 -38.9 5 1 1 10772 01 40 00 01 43 18 =0420-014 00 05 08 15.6 110.4 -4.3 -38.7 180 F 1 12088 01 43 36 3C120 00 05 26 19.2 103.9 -4.5 -40.6 4 1 2 12088 01 43 18 02 03 32 --- 00 25 26 22.4 108.0 -4.1 -39.6 1197 R 1 15016 02 03 50 J0423-0120 00 25 43 18.8 114.6 -4.0 -37.4 4 1 2 15016 02 03 32 02 06 50 =0420-014 00 28 43 19.2 115.2 -3.9 -37.2 180 R 1 13701 02 07 07 3C120 00 29 01 23.0 108.8 -4.1 -39.4 4 1 2 13701 02 06 50 02 27 04 --- 00 49 01 26.1 113.0 -3.7 -38.1 1197 R 1 5603 02 28 54 3C147 00 50 51 44.0 59.0 -4.9 -62.6 68 1 2 5603 02 28 34 02 31 53 --- 00 53 51 44.5 59.3 -4.8 -62.9 180 R 1 4273 02 33 53 3C120 00 55 51 27.2 114.5 -3.6 -37.6 77 1 3 4273 02 33 33 02 53 50 --- 01 15 51 30.1 119.1 -3.3 -35.9 1197 F 1 3838 02 54 10 J0423-0120 01 16 11 26.1 125.8 -3.1 -32.8 6 1 3 3838 02 53 50 02 57 09 =0420-014 01 19 11 26.5 126.5 -3.1 -32.5 180 F 1 5171 02 57 30 3C120 01 19 32 30.7 119.9 -3.2 -35.5 6 1 3 5171 02 57 09 03 17 26 --- 01 39 32 33.5 124.8 -2.9 -33.4 1197 F 1 13283 03 17 46 J0423-0120 01 39 52 29.1 131.5 -2.7 -30.0 5 1 3 13283 03 17 26 03 20 46 =0420-014 01 42 52 29.5 132.2 -2.7 -29.6 180 F 1 14612 03 21 06 3C120 01 43 11 34.0 125.7 -2.8 -33.0 5 1 4 14612 03 20 46 03 41 02 --- 02 03 11 36.6 130.9 -2.5 -30.5 1197 R 1 12477 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 03 42 58 3C147 02 05 08 55.0 66.2 -3.6 -71.3 67 1 4 12477 03 42 38 03 45 58 --- 02 08 08 55.5 66.5 -3.6 -71.7 180 R 1 11147 03 47 57 3C120 02 10 08 37.5 132.8 -2.4 -29.5 69 1 4 11147 03 47 37 04 07 54 --- 02 30 08 39.8 138.4 -2.1 -26.4 1197 R 1 3036 04 08 14 J0423-0120 02 30 28 34.8 144.8 -1.9 -22.6 4 1 4 3036 04 07 54 04 11 14 =0420-014 02 33 28 35.1 145.7 -1.8 -22.1 180 R 1 1703 04 11 34 3C120 02 33 48 40.2 139.5 -2.0 -25.8 4 1 5 1703 04 11 14 04 31 31 --- 02 53 48 42.2 145.5 -1.7 -22.3 1197 F 1 6410 04 31 51 J0423-0120 02 54 09 36.9 151.7 -1.5 -18.5 4 1 5 6410 04 31 31 04 34 51 =0420-014 02 57 09 37.1 152.5 -1.4 -17.9 180 F 1 7742 04 35 11 3C120 02 57 29 42.6 146.7 -1.6 -21.6 3 1 5 7742 04 34 51 04 55 08 --- 03 17 29 44.3 153.1 -1.3 -17.6 1197 F 1 15854 04 57 03 3C147 03 19 25 66.6 72.2 -2.4 -80.3 55 1 5 15854 04 56 43 05 00 02 --- 03 22 25 67.1 72.4 -2.3 -80.7 180 F 1 17184 05 02 02 3C120 03 24 25 44.8 155.4 -1.1 -16.2 58 1 6 17184 05 01 42 05 21 59 --- 03 44 25 46.0 162.3 -0.8 -11.8 1197 R 1 9073 05 22 19 J0423-0120 03 44 45 39.8 167.4 -0.6 -8.4 2 1 6 9073 05 21 59 05 25 19 =0420-014 03 47 45 39.9 168.3 -0.6 -7.8 180 R 1 7741 05 25 39 3C120 03 48 05 46.2 163.6 -0.8 -10.9 2 1 7 7741 05 25 19 05 45 36 --- 04 08 05 46.9 170.8 -0.4 -6.2 1197 F 1 372 05 45 56 J0423-0120 04 08 26 40.4 175.1 -0.3 -3.3 1 1 7 372 05 45 36 05 48 55 =0420-014 04 11 26 40.5 176.0 -0.2 -2.6 180 F 1 1705 05 49 16 3C120 04 11 46 47.0 172.1 -0.4 -5.3 1 1 7 1705 05 48 55 06 09 12 --- 04 31 46 47.2 179.4 0.0 -0.4 1197 F 1 9818 06 11 17 3C147 04 33 51 78.6 74.9 -1.2 -92.1 49 1 7 9818 06 10 57 06 14 17 --- 04 36 51 79.0 74.8 -1.1 -92.7 180 F 1 11148 06 16 25 3C120 04 39 00 47.2 182.0 0.1 1.4 51 1 8 11148 06 16 05 06 36 22 --- 04 59 00 46.9 189.3 0.4 6.2 1197 R 1 15941 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 06 36 42 J0423-0120 04 59 20 39.9 191.7 0.6 7.8 0 1 8 15941 06 36 22 06 39 42 =0420-014 05 02 20 39.8 192.7 0.6 8.4 180 R 1 14609 06 40 02 3C120 05 02 40 46.8 190.7 0.5 7.1 0 1 8 14609 06 39 42 06 59 58 --- 05 22 40 46.0 197.8 0.8 11.8 1197 R 1 6496 07 00 19 J0423-0120 05 23 01 38.9 199.3 1.0 12.7 0 1 8 6496 06 59 58 07 03 18 =0420-014 05 26 01 38.7 200.2 1.0 13.3 180 R 1 5164 07 03 39 3C120 05 26 21 45.8 199.1 0.9 12.7 0 1 9 5164 07 03 18 07 23 35 --- 05 46 21 44.5 205.9 1.2 17.0 1197 F 1 2949 07 25 13 3C147 05 47 59 88.1 334.8 0.1 153.8 5 1 9 2949 07 24 53 07 28 13 --- 05 50 59 87.8 323.3 0.1 141.8 180 F 1 4279 07 30 12 3C120 05 52 59 44.0 208.1 1.3 18.4 26 1 9 4279 07 29 52 07 50 09 --- 06 12 59 42.2 214.5 1.7 22.3 1197 F 1 12390 07 50 30 J0423-0120 06 13 20 35.1 214.3 1.8 22.1 0 1 9 12390 07 50 09 07 53 29 =0420-014 06 16 20 34.8 215.1 1.9 22.6 180 F 1 13723 07 53 49 3C120 06 16 40 41.9 215.6 1.7 23.0 0 1 10 13723 07 53 29 08 13 46 --- 06 36 40 39.8 221.6 2.1 26.4 1197 R 1 13364 08 14 06 J0423-0120 06 37 00 32.7 220.8 2.2 25.9 0 1 10 13364 08 13 46 08 17 06 =0420-014 06 40 00 32.3 221.6 2.3 26.3 180 R 1 12032 08 17 26 3C120 06 40 20 39.4 222.7 2.1 27.0 0 1 10 12032 08 17 06 08 37 23 --- 07 00 20 37.0 228.2 2.4 30.0 1197 R 1 3920 08 39 18 3C147 07 02 17 76.9 285.0 1.3 90.0 30 1 10 3920 08 38 58 08 42 18 --- 07 05 17 76.4 285.0 1.4 89.4 180 R 1 2590 08 44 45 3C286 07 07 44 18.6 424.7 -6.4 -44.5 26 1 10 2590 08 44 25 08 47 45 --- 07 10 44 19.0 425.2 -6.3 -44.7 180 R 1 1260 08 50 00 3C120 07 13 00 35.4 231.6 2.7 31.7 0 1 11 1260 08 49 40 09 09 56 --- 07 33 00 32.7 236.6 3.0 34.0 1197 F 1 6851 09 10 17 J0423-0120 07 33 20 25.7 234.8 3.2 33.1 0 1 11 6851 09 09 56 09 13 16 =0420-014 07 36 20 25.3 235.5 3.2 33.4 180 F 1 8183 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) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- 09 13 36 3C120 07 36 40 32.2 237.5 3.1 34.4 0 1 11 8183 09 13 16 09 33 33 --- 07 56 40 29.3 242.2 3.4 36.4 1197 F 1 16294 09 33 53 J0423-0120 07 57 00 22.4 240.2 3.6 35.4 0 1 11 16294 09 33 33 09 36 52 =0420-014 08 00 00 21.9 240.9 3.6 35.7 180 F 1 17623 09 37 12 3C120 08 00 19 28.8 243.1 3.4 36.7 0 1 12 17623 09 36 52 09 57 08 --- 08 20 19 25.7 247.5 3.8 38.3 1197 R 1 9514 09 58 33 3C147 08 21 44 64.2 288.9 2.6 78.4 1 1 12 9514 09 58 13 10 01 32 --- 08 24 44 63.7 289.1 2.7 78.0 180 R 1 8184 10 04 01 3C286 08 27 13 31.1 437.6 -5.1 -49.2 44 1 12 8184 10 03 41 10 07 00 --- 08 30 13 31.6 438.1 -5.0 -49.3 180 R 1 6854 10 09 12 3C120 08 32 25 23.9 250.1 4.0 39.1 0 1 13 6854 10 08 52 10 29 09 --- 08 52 25 20.7 254.3 4.3 40.2 1197 F 1 1258 10 29 13 3C120 08 52 29 20.7 254.3 4.3 40.2 0 1 13 1258 10 29 09 10 49 10 --- 09 12 29 17.4 258.3 4.7 41.0 1197 F 1 9266 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 28.435702 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.14194 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 24.289860 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.73586 * 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 55.670867 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 20.46366 * 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 18.361974 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.90875 * 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 142.1 3C120 148.3 3C147 152.4 3C286 88.0 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