COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 00 16 11 35.4 51.5 -5.4 -64.8 0 1 1 0 00 01 51 00 05 11 --- 00 19 11 35.8 51.7 -5.4 -65.2 180 F 1 1330 00 07 11 3C120 00 21 11 23.5 104.6 -4.2 -46.5 78 1 1 1330 00 06 51 00 27 07 --- 00 41 11 27.1 108.4 -3.9 -45.3 1197 F 1 9442 00 27 22 J0423-0120 00 41 25 24.0 115.6 -3.7 -42.3 2 1 1 9442 00 27 07 00 30 21 =0420-014 00 44 25 24.5 116.2 -3.7 -42.0 180 F 1 10735 00 30 36 3C120 00 44 40 27.7 109.1 -3.8 -45.1 2 1 2 10735 00 30 21 00 50 33 --- 01 04 40 31.2 113.2 -3.5 -43.5 1197 R 1 16389 00 50 48 J0423-0120 01 04 56 27.9 120.5 -3.3 -40.0 3 1 2 16389 00 50 33 00 53 48 =0420-014 01 07 56 28.3 121.2 -3.3 -39.7 180 R 1 15087 00 54 04 3C120 01 08 12 31.8 113.9 -3.4 -43.2 3 1 2 15087 00 53 48 01 14 00 --- 01 28 12 35.1 118.4 -3.1 -41.2 1197 R 1 7004 01 15 05 3C147 01 29 16 46.4 56.8 -4.2 -75.4 17 1 2 7004 01 14 45 01 18 04 --- 01 32 16 46.9 56.9 -4.2 -75.8 180 R 1 5674 01 20 04 3C120 01 34 16 36.1 119.8 -3.0 -40.6 72 1 3 5674 01 19 44 01 40 00 --- 01 54 16 39.3 124.6 -2.7 -38.1 1197 F 1 2438 01 40 18 J0423-0120 01 54 34 35.3 132.2 -2.5 -33.6 4 1 3 2438 01 40 00 01 43 18 =0420-014 01 57 34 35.7 132.9 -2.4 -33.1 180 F 1 3754 01 43 36 3C120 01 57 52 39.8 125.5 -2.6 -37.6 4 1 3 3754 01 43 18 02 03 32 --- 02 17 52 42.7 130.9 -2.3 -34.5 1197 F 1 11850 02 03 50 J0423-0120 02 18 09 38.4 138.4 -2.1 -29.7 3 1 3 11850 02 03 32 02 06 50 =0420-014 02 21 09 38.8 139.3 -2.0 -29.1 180 F 1 13165 02 07 07 3C120 02 21 27 43.2 131.9 -2.2 -33.9 3 1 4 13165 02 06 50 02 27 04 --- 02 41 27 45.9 137.8 -1.9 -30.2 1197 R 1 13937 02 28 54 3C147 02 43 17 58.2 59.7 -3.0 -87.2 51 1 4 13937 02 28 34 02 31 53 --- 02 46 17 58.7 59.7 -2.9 -87.7 180 R 1 12607 Schedule for VLBA_NL (Code Nl ) 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 --- 02 33 53 3C120 02 48 17 46.7 140.0 -1.8 -28.8 60 1 4 12607 02 33 33 02 53 50 --- 03 08 17 49.0 146.6 -1.4 -24.3 1197 R 1 4495 02 54 10 J0423-0120 03 08 38 43.7 153.7 -1.2 -19.3 4 1 4 4495 02 53 50 02 57 09 =0420-014 03 11 38 43.9 154.7 -1.2 -18.6 180 R 1 3163 02 57 30 3C120 03 11 58 49.3 147.9 -1.4 -23.5 3 1 5 3163 02 57 09 03 17 26 --- 03 31 58 51.1 155.2 -1.0 -18.3 1197 F 1 4949 03 17 46 J0423-0120 03 32 18 45.4 161.6 -0.9 -13.6 2 1 5 4949 03 17 26 03 20 46 =0420-014 03 35 18 45.5 162.7 -0.8 -12.8 180 F 1 6278 03 21 06 3C120 03 35 38 51.4 156.6 -1.0 -17.3 2 1 5 6278 03 20 46 03 41 02 --- 03 55 38 52.6 164.4 -0.6 -11.6 1197 F 1 14389 03 42 58 3C147 03 57 34 70.1 57.1 -1.8 -103.8 38 1 5 14389 03 42 38 03 45 58 --- 04 00 34 70.5 56.7 -1.7 -104.7 180 F 1 15719 03 47 57 3C120 04 02 34 52.9 167.2 -0.5 -9.6 40 1 6 15719 03 47 37 04 07 54 --- 04 22 34 53.5 175.5 -0.2 -3.4 1197 R 1 11369 04 08 14 J0423-0120 04 22 54 46.9 179.8 0.0 -0.2 1 1 6 11369 04 07 54 04 11 14 =0420-014 04 25 54 46.9 180.9 0.0 0.7 180 R 1 10037 04 11 34 3C120 04 26 15 53.6 177.0 -0.1 -2.2 1 1 6 10037 04 11 14 04 31 31 --- 04 46 15 53.5 185.4 0.2 4.0 1197 R 1 1924 04 31 51 J0423-0120 04 46 35 46.6 188.4 0.4 6.3 1 1 6 1924 04 31 31 04 34 51 =0420-014 04 49 35 46.5 189.5 0.4 7.1 180 R 1 592 04 35 11 3C120 04 49 55 53.4 186.9 0.3 5.2 0 1 7 592 04 34 51 04 55 08 --- 05 09 55 52.7 195.1 0.6 11.3 1197 F 1 7521 04 57 03 3C147 05 11 51 80.3 31.1 -0.5 -143.3 0 1 7 7521 04 56 43 05 00 02 --- 05 14 51 80.6 28.7 -0.5 -146.2 180 F 1 8851 05 02 02 3C120 05 16 51 52.3 197.9 0.7 13.3 1 1 7 8851 05 01 42 05 21 59 --- 05 36 51 50.9 205.6 1.1 18.9 1197 F 1 16962 05 22 19 J0423-0120 05 37 11 43.8 206.0 1.2 19.1 0 1 8 16962 05 21 59 05 25 19 =0420-014 05 40 11 43.5 206.9 1.3 19.8 180 R 1 16906 Schedule for VLBA_NL (Code Nl ) 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 --- 05 25 39 3C120 05 40 31 50.6 207.0 1.1 19.8 0 1 8 16906 05 25 19 05 45 36 --- 06 00 31 48.7 214.1 1.5 24.8 1197 R 1 8793 05 45 56 J0423-0120 06 00 52 41.6 213.4 1.6 24.3 0 1 8 8793 05 45 36 05 48 55 =0420-014 06 03 52 41.3 214.4 1.7 24.9 180 R 1 7460 05 49 16 3C120 06 04 12 48.4 215.3 1.5 25.7 0 1 9 7460 05 48 55 06 09 12 --- 06 24 12 46.0 221.8 1.8 30.0 1197 F 1 653 06 11 17 3C147 06 26 17 79.0 320.7 0.7 132.9 53 1 9 653 06 10 57 06 14 17 --- 06 29 17 78.6 319.1 0.8 130.7 180 F 1 1983 06 16 25 3C120 06 31 26 45.1 224.0 2.0 31.4 55 1 9 1983 06 16 05 06 36 22 --- 06 51 26 42.4 229.8 2.3 34.9 1197 F 1 10094 06 36 42 J0423-0120 06 51 46 35.4 227.7 2.5 33.5 0 1 9 10094 06 36 22 06 39 42 =0420-014 06 54 46 35.0 228.4 2.5 33.9 180 F 1 11426 06 40 02 3C120 06 55 07 41.9 230.8 2.4 35.5 0 1 10 11426 06 39 42 06 59 58 --- 07 15 07 38.9 236.0 2.7 38.4 1197 R 1 15661 07 00 19 J0423-0120 07 15 27 32.0 233.5 2.9 36.8 1 1 10 15661 06 59 58 07 03 18 =0420-014 07 18 27 31.5 234.2 2.9 37.2 180 R 1 14329 07 03 39 3C120 07 18 47 38.3 236.9 2.8 38.9 1 1 10 14329 07 03 18 07 23 35 --- 07 38 47 35.1 241.7 3.1 41.3 1197 R 1 6216 07 25 13 3C147 07 40 25 68.2 301.8 2.0 100.4 26 1 10 6216 07 24 53 07 28 13 --- 07 43 25 67.7 301.5 2.0 99.6 180 R 1 4886 07 30 12 3C120 07 45 25 34.0 243.2 3.2 42.0 46 1 11 4886 07 29 52 07 50 09 --- 08 05 25 30.6 247.5 3.5 43.8 1197 F 1 3226 07 50 30 J0423-0120 08 05 46 24.0 244.5 3.7 42.3 1 1 11 3226 07 50 09 07 53 29 =0420-014 08 08 46 23.5 245.1 3.8 42.6 180 F 1 4558 07 53 49 3C120 08 09 06 30.0 248.3 3.6 44.1 1 1 11 4558 07 53 29 08 13 46 --- 08 29 06 26.5 252.3 3.9 45.5 1197 F 1 12671 08 14 06 J0423-0120 08 29 26 19.9 249.1 4.1 44.2 1 1 11 12671 08 13 46 08 17 06 =0420-014 08 32 26 19.4 249.7 4.1 44.4 180 F 1 14003 Schedule for VLBA_NL (Code Nl ) 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 --- 08 17 26 3C120 08 32 47 25.8 253.0 4.0 45.7 1 1 12 14003 08 17 06 08 37 23 --- 08 52 47 22.2 256.7 4.3 46.8 1197 R 1 13085 08 39 18 3C147 08 54 43 56.2 300.5 3.2 85.1 42 1 12 13085 08 38 58 08 42 18 --- 08 57 43 55.8 300.6 3.2 84.6 180 R 1 11755 08 44 45 3C286 09 00 10 35.5 438.6 -4.5 -58.0 49 1 12 11755 08 44 25 08 47 45 --- 09 03 10 36.1 439.0 -4.5 -58.2 180 R 1 10425 08 50 00 3C120 09 05 26 19.9 259.0 4.5 47.3 9 1 12 10425 08 49 40 09 09 56 --- 09 25 26 16.2 262.6 4.9 48.0 1197 R 1 2314 09 58 33 3C147 10 14 10 43.7 304.3 4.5 72.8 2855 1 12 2314 09 58 13 10 01 32 --- 10 17 10 43.2 304.5 4.6 72.3 180 R 1 983 10 04 01 3C286 10 19 39 50.2 90.6 -3.2 -59.9 0 1 13 983 10 03 41 10 07 00 --- 10 22 39 50.8 91.1 -3.1 -59.9 180 F 1 347 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