COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_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) ---------------------------------------------------------------------------------------- --- 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 00 36 11 38.3 53.1 -5.1 -67.7 0 1 1 0 00 06 04 00 09 24 --- 00 39 11 38.8 53.3 -5.1 -68.1 180 F 1 1330 00 11 24 3C120 00 41 11 27.1 108.4 -3.9 -45.3 77 1 1 1330 00 11 04 00 31 20 --- 01 01 11 30.6 112.5 -3.5 -43.8 1197 F 1 9442 00 31 36 J0423-0120 01 01 26 27.3 119.7 -3.4 -40.4 3 1 1 9442 00 31 20 00 34 35 =0420-014 01 04 26 27.8 120.4 -3.3 -40.1 180 F 1 10742 00 34 51 3C120 01 04 42 31.2 113.2 -3.5 -43.5 3 1 2 10742 00 34 35 00 54 48 --- 01 24 42 34.5 117.6 -3.1 -41.6 1197 R 1 16376 00 55 05 J0423-0120 01 24 59 31.0 125.0 -3.0 -37.7 4 1 2 16376 00 54 48 00 58 04 =0420-014 01 27 59 31.5 125.7 -2.9 -37.3 180 R 1 15067 00 58 21 3C120 01 28 16 35.1 118.4 -3.1 -41.2 4 1 2 15067 00 58 04 01 18 18 --- 01 48 16 38.3 123.1 -2.8 -38.9 1197 R 1 6977 01 19 30 3C147 01 49 28 49.6 57.9 -3.9 -78.4 22 1 2 6977 01 19 10 01 22 29 --- 01 52 28 50.1 58.0 -3.8 -78.9 180 R 1 5647 01 24 29 3C120 01 54 28 39.3 124.7 -2.6 -38.0 69 1 3 5647 01 24 09 01 44 25 --- 02 14 28 42.3 130.0 -2.3 -35.0 1197 F 1 2465 01 44 43 J0423-0120 02 14 46 38.0 137.5 -2.1 -30.3 3 1 3 2465 01 44 25 01 47 43 =0420-014 02 17 46 38.4 138.3 -2.1 -29.7 180 F 1 3779 01 48 00 3C120 02 18 03 42.8 131.0 -2.3 -34.5 3 1 3 3779 01 47 43 02 07 57 --- 02 38 03 45.5 136.8 -1.9 -30.9 1197 F 1 11876 02 08 16 J0423-0120 02 38 23 40.8 144.2 -1.8 -25.8 4 1 3 11876 02 07 57 02 11 16 =0420-014 02 41 23 41.1 145.1 -1.7 -25.2 180 F 1 13200 02 11 35 3C120 02 41 42 45.9 137.9 -1.9 -30.1 4 1 4 13200 02 11 16 02 31 32 --- 03 01 42 48.3 144.4 -1.5 -25.9 1197 R 1 13892 02 33 36 3C147 03 03 46 61.5 59.8 -2.7 -91.0 61 1 4 13892 02 33 16 02 36 35 --- 03 06 46 62.0 59.8 -2.6 -91.6 180 R 1 12562 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) ---------------------------------------------------------------------------------------- --- Wed 31 Dec 2003 Day 365 --- 02 38 35 3C120 03 08 46 49.0 146.8 -1.4 -24.2 56 1 4 12562 02 38 15 02 58 32 --- 03 28 46 50.8 154.0 -1.1 -19.2 1197 R 1 4450 02 58 51 J0423-0120 03 29 06 45.2 160.5 -0.9 -14.4 2 1 4 4450 02 58 32 03 01 51 =0420-014 03 32 06 45.4 161.6 -0.9 -13.6 180 R 1 3122 03 02 11 3C120 03 32 26 51.1 155.3 -1.0 -18.2 2 1 5 3122 03 01 51 03 22 07 --- 03 52 26 52.5 163.1 -0.7 -12.6 1197 F 1 4989 03 22 28 J0423-0120 03 52 46 46.3 168.8 -0.5 -8.3 2 1 5 4989 03 22 07 03 25 27 =0420-014 03 55 46 46.4 169.9 -0.5 -7.5 180 F 1 6320 03 25 47 3C120 03 56 06 52.7 164.6 -0.6 -11.5 2 1 5 6320 03 25 27 03 45 44 --- 04 16 06 53.4 172.8 -0.3 -5.4 1197 F 1 14432 03 47 40 3C147 04 18 02 73.2 54.0 -1.4 -110.7 30 1 5 14432 03 47 20 03 50 39 --- 04 21 02 73.7 53.4 -1.4 -111.9 180 F 1 15762 03 52 39 3C120 04 23 02 53.5 175.7 -0.2 -3.3 32 1 6 15762 03 52 19 04 12 36 --- 04 43 02 53.5 184.0 0.2 3.0 1197 R 1 11326 04 12 56 J0423-0120 04 43 23 46.7 187.3 0.3 5.4 1 1 6 11326 04 12 36 04 15 55 =0420-014 04 46 23 46.6 188.3 0.4 6.2 180 R 1 9994 04 16 16 3C120 04 46 43 53.5 185.6 0.2 4.2 0 1 6 9994 04 15 55 04 36 12 --- 05 06 43 52.8 193.8 0.6 10.3 1197 R 1 1882 04 36 33 J0423-0120 05 07 03 45.8 195.7 0.7 11.7 0 1 6 1882 04 36 12 04 39 32 =0420-014 05 10 03 45.6 196.8 0.8 12.4 180 R 1 550 04 39 52 3C120 05 10 23 52.7 195.3 0.6 11.4 0 1 7 550 04 39 32 04 59 49 --- 05 30 23 51.4 203.1 0.9 17.1 1197 F 1 7562 05 01 47 3C147 05 32 22 81.7 371.9 -0.2 -166.2 0 1 7 7562 05 01 27 05 04 47 --- 05 35 22 81.8 368.6 -0.1 -170.1 180 F 1 8892 05 06 46 3C120 05 37 22 50.9 205.8 1.1 19.0 5 1 7 8892 05 06 26 05 26 43 --- 05 57 22 49.1 213.0 1.4 24.1 1197 F 1 17004 05 27 04 J0423-0120 05 57 43 41.9 212.5 1.6 23.6 0 1 8 17004 05 26 43 05 30 03 =0420-014 06 00 43 41.6 213.4 1.6 24.2 180 R 1 16864 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) ---------------------------------------------------------------------------------------- --- Wed 31 Dec 2003 Day 365 --- 05 30 23 3C120 06 01 03 48.7 214.3 1.5 24.9 0 1 8 16864 05 30 03 05 50 20 --- 06 21 03 46.4 220.8 1.8 29.3 1197 R 1 8751 05 50 40 J0423-0120 06 21 23 39.3 219.5 2.0 28.3 0 1 8 8751 05 50 20 05 53 40 =0420-014 06 24 23 39.0 220.3 2.0 28.9 180 R 1 7419 05 54 00 3C120 06 24 44 46.0 222.0 1.9 30.1 0 1 9 7419 05 53 40 06 13 57 --- 06 44 44 43.3 227.9 2.2 33.8 1197 F 1 694 06 15 52 3C147 06 46 39 76.3 311.6 1.1 120.1 43 1 9 694 06 15 32 06 18 51 --- 06 49 39 75.9 310.6 1.1 118.6 180 F 1 2024 06 20 51 3C120 06 51 39 42.4 229.8 2.3 34.9 47 1 9 2024 06 20 31 06 40 48 --- 07 11 39 39.4 235.1 2.6 37.9 1197 F 1 10136 06 41 08 J0423-0120 07 11 59 32.5 232.7 2.8 36.4 1 1 9 10136 06 40 48 06 44 07 =0420-014 07 14 59 32.1 233.4 2.9 36.8 180 F 1 11468 06 44 28 3C120 07 15 19 38.8 236.1 2.7 38.4 1 1 10 11468 06 44 07 07 04 24 --- 07 35 19 35.7 240.9 3.0 40.9 1197 R 1 15619 07 04 45 J0423-0120 07 35 40 28.9 238.1 3.2 39.3 1 1 10 15619 07 04 24 07 07 44 =0420-014 07 38 40 28.4 238.8 3.3 39.6 180 R 1 14287 07 08 04 3C120 07 39 00 35.1 241.7 3.1 41.3 1 1 10 14287 07 07 44 07 28 01 --- 07 59 00 31.7 246.1 3.4 43.2 1197 R 1 6174 07 29 32 3C147 08 00 32 65.0 300.6 2.3 95.5 19 1 10 6174 07 29 12 07 32 32 --- 08 03 32 64.5 300.5 2.3 94.9 180 R 1 4844 07 34 31 3C286 08 05 31 25.7 431.0 -5.4 -54.9 26 1 10 4844 07 34 11 07 37 31 --- 08 08 31 26.2 431.4 -5.4 -55.1 180 R 1 3514 07 39 39 3C120 08 10 40 29.7 248.6 3.6 44.2 0 1 11 3514 07 39 19 07 59 36 --- 08 30 40 26.2 252.6 4.0 45.6 1197 F 1 4597 07 59 56 J0423-0120 08 31 00 19.6 249.4 4.1 44.3 1 1 11 4597 07 59 36 08 02 55 =0420-014 08 34 00 19.1 250.0 4.2 44.5 180 F 1 5929 08 03 15 3C120 08 34 20 25.5 253.3 4.0 45.8 1 1 11 5929 08 02 55 08 23 12 --- 08 54 20 21.9 257.0 4.3 46.9 1197 F 1 14041 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) ---------------------------------------------------------------------------------------- --- Wed 31 Dec 2003 Day 365 --- 08 23 32 J0423-0120 08 54 40 15.4 253.8 4.5 45.8 1 1 11 14041 08 23 12 08 26 32 =0420-014 08 57 40 14.9 254.3 4.6 45.9 180 F 1 15373 08 26 52 3C120 08 58 00 21.3 257.7 4.4 47.0 1 1 12 15373 08 26 32 08 46 49 --- 09 18 00 17.6 261.3 4.7 47.8 1197 R 1 11716 08 48 45 3C147 09 19 57 52.2 301.4 3.6 80.9 41 1 12 11716 08 48 25 08 51 44 --- 09 22 57 51.7 301.5 3.7 80.5 180 R 1 10386 08 54 09 3C286 09 25 22 40.2 442.2 -4.1 -59.0 46 1 12 10386 08 53 49 08 57 09 --- 09 28 22 40.7 442.6 -4.0 -59.1 180 R 1 9055 10 07 53 3C147 10 39 19 39.9 306.1 4.9 69.1 4147 1 12 9055 10 07 33 10 10 53 --- 10 42 19 39.4 306.3 5.0 68.7 180 R 1 7725 10 13 20 3C286 10 44 46 54.9 95.1 -2.8 -59.6 0 1 12 7725 10 13 00 10 16 19 --- 10 47 46 55.5 95.6 -2.7 -59.5 180 R 1 6395 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