COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067q 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 31 Dec 2003 Day 365 --- 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 06 24 3C147 22 43 45 27.3 44.6 -7.0 -46.6 0 1 1 0 00 06 04 00 09 24 --- 22 46 45 27.7 44.9 -6.9 -47.0 180 F 1 1330 00 58 21 3C120 23 35 50 14.4 98.1 -5.0 -41.6 2895 1 1 1330 00 58 01 01 18 18 --- 23 55 50 17.7 102.0 -4.6 -41.0 1197 F 1 9442 01 19 30 3C147 23 57 02 36.6 53.2 -5.8 -56.0 28 1 1 9442 01 19 10 01 22 29 --- 00 00 02 37.0 53.6 -5.7 -56.4 180 F 1 10772 01 24 29 3C120 00 02 02 18.7 103.3 -4.5 -40.7 77 1 2 10772 01 24 09 01 44 25 --- 00 22 02 21.9 107.3 -4.2 -39.8 1197 R 1 16317 01 44 43 J0423-0120 00 22 19 18.3 113.9 -4.0 -37.6 4 1 2 16317 01 44 25 01 47 43 =0420-014 00 25 19 18.7 114.5 -4.0 -37.4 180 R 1 15003 01 48 00 3C120 00 25 37 22.5 108.0 -4.1 -39.6 4 1 2 15003 01 47 43 02 07 57 --- 00 45 37 25.6 112.3 -3.8 -38.3 1197 R 1 6906 02 08 16 J0423-0120 00 45 56 21.8 118.9 -3.6 -35.8 6 1 2 6906 02 07 57 02 11 16 =0420-014 00 48 56 22.2 119.6 -3.6 -35.5 180 R 1 5582 02 11 35 3C120 00 49 16 26.2 113.1 -3.7 -38.1 6 1 3 5582 02 11 16 02 31 32 --- 01 09 16 29.2 117.6 -3.4 -36.5 1197 F 1 2526 02 33 36 3C147 01 11 20 47.0 61.1 -4.5 -65.0 80 1 3 2526 02 33 16 02 36 35 --- 01 14 20 47.4 61.4 -4.5 -65.4 180 F 1 3856 02 38 35 3C120 01 16 20 30.2 119.2 -3.3 -35.8 75 1 3 3856 02 38 15 02 58 32 --- 01 36 20 33.1 124.0 -3.0 -33.8 1197 F 1 11968 02 58 51 J0423-0120 01 36 40 28.7 130.7 -2.8 -30.4 5 1 3 11968 02 58 32 03 01 51 =0420-014 01 39 40 29.1 131.4 -2.7 -30.0 180 F 1 13297 03 02 11 3C120 01 40 00 33.6 124.9 -2.9 -33.4 5 1 4 13297 03 01 51 03 22 07 --- 02 00 00 36.2 130.0 -2.6 -30.9 1197 R 1 13793 03 22 28 J0423-0120 02 00 20 31.6 136.7 -2.4 -27.3 5 1 4 13793 03 22 07 03 25 27 =0420-014 02 03 20 31.9 137.4 -2.3 -26.8 180 R 1 12462 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 31 Dec 2003 Day 365 --- 03 25 47 3C120 02 03 40 36.7 131.0 -2.5 -30.4 5 1 4 12462 03 25 27 03 45 44 --- 02 23 40 39.1 136.5 -2.2 -27.5 1197 R 1 4350 03 47 40 3C147 02 25 36 58.2 68.0 -3.3 -73.7 64 1 4 4350 03 47 20 03 50 39 --- 02 28 36 58.6 68.3 -3.2 -74.1 180 R 1 3020 03 52 39 3C120 02 30 36 39.9 138.5 -2.0 -26.4 67 1 5 3020 03 52 19 04 12 36 --- 02 50 36 41.9 144.5 -1.7 -22.9 1197 F 1 5092 04 12 56 J0423-0120 02 50 57 36.6 150.7 -1.5 -19.1 4 1 5 5092 04 12 36 04 15 55 =0420-014 02 53 57 36.8 151.6 -1.5 -18.5 180 F 1 6424 04 16 16 3C120 02 54 17 42.3 145.7 -1.7 -22.2 3 1 5 6424 04 15 55 04 36 12 --- 03 14 17 44.0 152.1 -1.3 -18.3 1197 F 1 14537 04 36 33 J0423-0120 03 14 37 38.3 157.8 -1.1 -14.6 3 1 5 14537 04 36 12 04 39 32 =0420-014 03 17 37 38.5 158.8 -1.1 -14.0 180 F 1 15868 04 39 52 3C120 03 17 57 44.3 153.3 -1.3 -17.5 2 1 6 15868 04 39 32 04 59 49 --- 03 37 57 45.6 160.1 -0.9 -13.2 1197 R 1 11220 05 01 47 3C147 03 39 56 69.9 73.5 -2.0 -83.0 55 1 6 11220 05 01 27 05 04 47 --- 03 42 56 70.4 73.7 -2.0 -83.5 180 R 1 9890 05 06 46 3C120 03 44 56 46.0 162.5 -0.8 -11.6 54 1 6 9890 05 06 26 05 26 43 --- 04 04 56 46.8 169.6 -0.5 -6.9 1197 R 1 1778 05 27 04 J0423-0120 04 05 16 40.4 174.0 -0.3 -4.0 1 1 6 1778 05 26 43 05 30 03 =0420-014 04 08 16 40.4 175.0 -0.3 -3.3 180 R 1 446 05 30 23 3C120 04 08 37 46.9 170.9 -0.4 -6.1 1 1 7 446 05 30 03 05 50 20 --- 04 28 37 47.2 178.2 -0.1 -1.2 1197 F 1 8559 05 50 40 J0423-0120 04 28 57 40.5 181.8 0.1 1.2 1 1 7 8559 05 50 20 05 53 40 =0420-014 04 31 57 40.5 182.8 0.1 1.9 180 F 1 9891 05 54 00 3C120 04 32 17 47.2 179.6 0.0 -0.3 1 1 8 9891 05 53 40 06 13 57 --- 04 52 17 47.0 186.9 0.3 4.6 1197 R 1 17196 06 15 52 3C147 04 54 13 81.8 73.3 -0.8 -97.5 33 1 8 17196 06 15 32 06 18 51 --- 04 57 13 82.3 72.8 -0.8 -98.6 180 R 1 15866 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 31 Dec 2003 Day 365 --- 06 20 51 3C120 04 59 13 46.9 189.4 0.4 6.3 36 1 8 15866 06 20 31 06 40 48 --- 05 19 13 46.1 196.6 0.8 11.0 1197 R 1 7754 06 41 08 J0423-0120 05 19 33 39.1 198.2 0.9 12.0 0 1 8 7754 06 40 48 06 44 07 =0420-014 05 22 33 38.9 199.1 1.0 12.6 180 R 1 6422 06 44 28 3C120 05 22 53 45.9 197.9 0.8 11.9 0 1 9 6422 06 44 07 07 04 24 --- 05 42 53 44.7 204.7 1.2 16.3 1197 F 1 1691 07 04 45 J0423-0120 05 43 14 37.6 205.5 1.3 16.7 0 1 9 1691 07 04 24 07 07 44 =0420-014 05 46 14 37.4 206.4 1.4 17.3 180 F 1 3023 07 08 04 3C120 05 46 34 44.5 206.0 1.2 17.1 0 1 9 3023 07 07 44 07 28 01 --- 06 06 34 42.8 212.5 1.6 21.1 1197 F 1 11136 07 29 32 3C147 06 08 05 85.5 295.0 0.4 110.3 0 1 9 11136 07 29 12 07 32 32 --- 06 11 05 85.1 293.1 0.5 107.8 180 F 1 12466 07 39 39 3C120 06 18 13 41.7 216.1 1.7 23.3 334 1 10 12466 07 39 19 07 59 36 --- 06 38 13 39.6 222.1 2.1 26.7 1197 R 1 14622 07 59 56 J0423-0120 06 38 34 32.5 221.2 2.3 26.1 0 1 10 14622 07 59 36 08 02 55 =0420-014 06 41 34 32.2 222.0 2.3 26.5 180 R 1 13291 08 03 15 3C120 06 41 54 39.2 223.1 2.1 27.3 0 1 10 13291 08 02 55 08 23 12 --- 07 01 54 36.8 228.7 2.5 30.2 1197 R 1 5178 08 23 32 J0423-0120 07 02 14 29.7 227.3 2.6 29.4 0 1 10 5178 08 23 12 08 26 32 =0420-014 07 05 14 29.4 228.1 2.7 29.8 180 R 1 3847 08 26 52 3C120 07 05 34 36.4 229.6 2.5 30.7 0 1 11 3847 08 26 32 08 46 49 --- 07 25 34 33.7 234.8 2.9 33.2 1197 F 1 4265 08 48 45 3C147 07 27 31 72.8 285.6 1.7 85.7 32 1 11 4265 08 48 25 08 51 44 --- 07 30 31 72.4 285.7 1.8 85.2 180 F 1 5595 08 54 09 3C286 07 32 56 22.5 428.8 -6.0 -46.2 39 1 11 5595 08 53 49 08 57 09 --- 07 35 56 22.9 429.3 -5.9 -46.4 180 F 1 6925 08 59 23 3C120 07 38 10 32.0 237.9 3.1 34.6 0 1 11 6925 08 59 03 09 19 19 --- 07 58 10 29.1 242.6 3.4 36.5 1197 F 1 15036 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 31 Dec 2003 Day 365 --- 09 19 39 J0423-0120 07 58 30 22.2 240.5 3.6 35.5 0 1 11 15036 09 19 19 09 22 39 =0420-014 08 01 30 21.7 241.2 3.6 35.8 180 F 1 16365 09 22 58 3C120 08 01 50 28.5 243.4 3.5 36.8 0 1 12 16365 09 22 39 09 42 55 --- 08 21 50 25.5 247.9 3.8 38.4 1197 R 1 10726 09 43 15 J0423-0120 08 22 10 18.6 245.6 4.0 37.4 0 1 12 10726 09 42 55 09 46 14 =0420-014 08 25 10 18.2 246.2 4.0 37.7 180 R 1 9398 09 46 34 3C120 08 25 29 24.9 248.6 3.9 38.6 0 1 12 9398 09 46 14 10 06 30 --- 08 45 29 21.8 252.8 4.2 39.8 1197 R 1 1289 10 07 53 3C147 08 46 52 60.3 290.9 3.1 75.3 0 1 13 1289 10 07 33 10 10 53 --- 08 49 52 59.8 291.1 3.1 75.0 180 F 1 41 10 13 20 3C286 08 52 20 35.2 441.8 -4.6 -50.0 40 1 13 41 10 13 00 10 16 19 --- 08 55 20 35.7 442.3 -4.6 -50.1 180 F 1 1371 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 28.413947 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.55820 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 24.272088 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.45329 * 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 55.680070 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 21.23733 * 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 18.490083 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.02909 * 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 138.8 3C120 144.8 3C147 151.1 3C286 91.3 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