COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067p 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 23 48 17 3C147 00 06 11 33.9 50.6 -5.6 -63.4 0 1 1 0 23 47 57 23 51 17 --- 00 09 11 34.3 50.9 -5.6 -63.8 180 F 1 1330 --- Start: Sat 27 Dec 2003 Day 361 -- Stop: Sun 28 Dec 2003 Day 362 --- 23 53 16 3C120 00 11 11 21.7 102.7 -4.4 -46.9 79 1 1 1330 23 52 56 00 13 13 --- 00 31 11 25.3 106.5 -4.0 -45.9 1197 F 1 9442 00 13 27 J0423-0120 00 31 25 22.3 113.6 -3.9 -43.1 2 1 1 9442 00 13 13 00 16 27 =0420-014 00 34 25 22.8 114.2 -3.8 -42.9 180 F 1 10733 00 16 41 3C120 00 34 39 25.9 107.1 -4.0 -45.7 2 1 2 10733 00 16 27 00 36 38 --- 00 54 39 29.4 111.1 -3.6 -44.3 1197 R 1 16394 00 36 53 J0423-0120 00 54 55 26.2 118.4 -3.5 -41.0 3 1 2 16394 00 36 38 00 39 52 =0420-014 00 57 55 26.7 119.0 -3.4 -40.7 180 R 1 15096 00 40 08 3C120 00 58 10 30.0 111.8 -3.6 -44.1 3 1 2 15096 00 39 52 01 00 04 --- 01 18 10 33.5 116.1 -3.3 -42.3 1197 R 1 7016 01 01 05 3C147 01 19 11 44.9 56.1 -4.4 -73.9 15 1 2 7016 01 00 45 01 04 05 --- 01 22 11 45.3 56.3 -4.3 -74.3 180 R 1 5686 01 06 04 3C120 01 24 11 34.5 117.4 -3.2 -41.7 73 1 3 5686 01 05 44 01 26 01 --- 01 44 11 37.7 122.1 -2.8 -39.4 1197 F 1 2425 01 26 19 J0423-0120 01 44 29 33.9 129.6 -2.6 -35.1 4 1 3 2425 01 26 01 01 29 18 =0420-014 01 47 29 34.3 130.4 -2.6 -34.6 180 F 1 3740 01 29 36 3C120 01 47 46 38.3 123.0 -2.8 -38.9 4 1 3 3740 01 29 18 01 49 33 --- 02 07 46 41.3 128.1 -2.4 -36.1 1197 F 1 11836 01 49 50 J0423-0120 02 08 04 37.1 135.7 -2.3 -31.4 3 1 3 11836 01 49 33 01 52 50 =0420-014 02 11 04 37.5 136.5 -2.2 -30.9 180 F 1 13150 01 53 07 3C120 02 11 22 41.8 129.1 -2.4 -35.5 3 1 4 13150 01 52 50 02 13 04 --- 02 31 22 44.6 134.8 -2.0 -32.1 1197 R 1 13954 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) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 02 14 45 3C147 02 33 02 56.5 59.5 -3.2 -85.4 44 1 4 13954 02 14 25 02 17 44 --- 02 36 02 57.0 59.6 -3.1 -85.9 180 R 1 12624 02 19 44 3C120 02 38 02 45.5 136.8 -1.9 -30.9 62 1 4 12624 02 19 24 02 39 40 --- 02 58 02 47.9 143.1 -1.6 -26.7 1197 R 1 4513 02 40 01 J0423-0120 02 58 23 42.8 150.4 -1.4 -21.6 4 1 4 4513 02 39 40 02 43 00 =0420-014 03 01 23 43.1 151.3 -1.4 -21.0 180 R 1 3181 02 43 20 3C120 03 01 43 48.3 144.4 -1.5 -25.9 4 1 5 3181 02 43 00 03 03 17 --- 03 21 43 50.2 151.4 -1.2 -21.0 1197 F 1 4932 03 03 37 J0423-0120 03 22 03 44.7 158.1 -1.0 -16.1 3 1 5 4932 03 03 17 03 06 37 =0420-014 03 25 03 44.9 159.1 -1.0 -15.4 180 F 1 6262 03 06 56 3C120 03 25 23 50.6 152.7 -1.1 -20.1 2 1 5 6262 03 06 37 03 26 53 --- 03 45 23 52.1 160.3 -0.8 -14.6 1197 F 1 14372 03 28 41 3C147 03 47 11 68.4 58.1 -1.9 -100.9 34 1 5 14372 03 28 21 03 31 40 --- 03 50 11 68.9 57.8 -1.9 -101.7 180 F 1 15702 03 33 40 3C120 03 52 11 52.5 163.0 -0.7 -12.6 44 1 6 15702 03 33 20 03 53 37 --- 04 12 11 53.3 171.1 -0.4 -6.6 1197 R 1 11386 03 53 57 J0423-0120 04 12 31 46.8 176.0 -0.2 -3.0 1 1 6 11386 03 53 37 03 56 57 =0420-014 04 15 31 46.9 177.1 -0.1 -2.2 180 R 1 10054 03 57 17 3C120 04 15 51 53.4 172.7 -0.3 -5.5 1 1 6 10054 03 56 57 04 17 14 --- 04 35 51 53.6 181.0 0.0 0.8 1197 R 1 1941 04 17 34 J0423-0120 04 36 12 46.8 184.6 0.2 3.5 1 1 6 1941 04 17 14 04 20 33 =0420-014 04 39 12 46.7 185.7 0.3 4.3 180 R 1 609 04 20 54 3C120 04 39 32 53.6 182.6 0.1 1.9 1 1 7 609 04 20 33 04 40 50 --- 04 59 32 53.1 190.9 0.4 8.1 1197 F 1 7504 04 42 38 3C147 05 01 20 79.2 38.2 -0.7 -134.3 0 1 7 7504 04 42 18 04 45 38 --- 05 04 20 79.5 36.4 -0.6 -136.7 180 F 1 8834 04 47 37 3C120 05 06 20 52.9 193.7 0.5 10.2 9 1 7 8834 04 47 17 05 07 34 --- 05 26 20 51.7 201.6 0.9 16.0 1197 F 1 16945 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) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 05 07 54 J0423-0120 05 26 41 44.6 202.5 1.1 16.6 0 1 8 16945 05 07 34 05 10 54 =0420-014 05 29 41 44.4 203.5 1.1 17.3 180 R 1 16923 05 11 14 3C120 05 30 01 51.5 203.0 0.9 17.0 0 1 8 16923 05 10 54 05 31 11 --- 05 50 01 49.8 210.4 1.3 22.3 1197 R 1 8810 05 31 31 J0423-0120 05 50 21 42.6 210.2 1.4 22.0 0 1 8 8810 05 31 11 05 34 31 =0420-014 05 53 21 42.3 211.1 1.5 22.7 180 R 1 7477 05 34 51 3C120 05 53 41 49.4 211.7 1.3 23.2 0 1 9 7477 05 34 31 05 54 48 --- 06 13 41 47.3 218.5 1.7 27.8 1197 F 1 635 05 56 52 3C147 06 15 47 80.1 327.6 0.5 141.7 46 1 9 635 05 56 32 05 59 52 --- 06 18 47 79.8 325.5 0.6 139.0 180 F 1 1966 06 02 00 3C120 06 20 55 46.4 220.8 1.8 29.3 52 1 9 1966 06 01 40 06 21 57 --- 06 40 55 43.9 226.8 2.1 33.1 1197 F 1 10077 06 22 17 J0423-0120 06 41 15 36.8 224.9 2.3 31.8 0 1 9 10077 06 21 57 06 25 17 =0420-014 06 44 15 36.4 225.7 2.3 32.3 180 F 1 11409 06 25 37 3C120 06 44 36 43.3 227.9 2.2 33.7 0 1 10 11409 06 25 17 06 45 33 --- 07 04 36 40.5 233.3 2.5 36.9 1197 R 1 15678 06 45 54 J0423-0120 07 04 56 33.5 231.0 2.7 35.4 0 1 10 15678 06 45 33 06 48 53 =0420-014 07 07 56 33.1 231.7 2.7 35.8 180 R 1 14346 06 49 14 3C120 07 08 16 39.9 234.3 2.6 37.5 1 1 10 14346 06 48 53 07 09 10 --- 07 28 16 36.8 239.2 2.9 40.1 1197 R 1 6233 07 11 14 3C147 07 30 21 69.8 302.7 1.8 103.2 52 1 10 6233 07 10 54 07 14 14 --- 07 33 21 69.3 302.4 1.8 102.4 180 R 1 4903 07 16 29 3C120 07 35 36 35.6 241.0 3.0 40.9 62 1 11 4903 07 16 09 07 36 26 --- 07 55 36 32.3 245.4 3.4 42.9 1197 F 1 3209 07 36 46 J0423-0120 07 55 57 25.6 242.5 3.5 41.4 1 1 11 3209 07 36 26 07 39 46 =0420-014 07 58 57 25.1 243.1 3.6 41.7 180 F 1 4541 07 40 06 3C120 07 59 17 31.7 246.2 3.4 43.3 1 1 11 4541 07 39 46 08 00 03 --- 08 19 17 28.2 250.3 3.8 44.9 1197 F 1 12654 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) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 08 00 23 J0423-0120 08 19 37 21.6 247.2 3.9 43.5 1 1 11 12654 08 00 03 08 03 22 =0420-014 08 22 37 21.1 247.8 4.0 43.7 180 F 1 13986 08 03 43 3C120 08 22 58 27.5 251.1 3.8 45.1 1 1 12 13986 08 03 22 08 23 39 --- 08 42 58 24.0 254.9 4.2 46.3 1197 R 1 13101 08 25 27 3C147 08 44 46 57.8 300.3 3.0 86.8 34 1 12 13101 08 25 07 08 28 26 --- 08 47 46 57.4 300.4 3.1 86.3 180 R 1 11771 08 30 54 3C286 08 50 14 33.7 437.2 -4.7 -57.6 51 1 12 11771 08 30 34 08 33 54 --- 08 53 14 34.3 437.6 -4.6 -57.7 180 R 1 10441 08 36 10 3C120 08 55 30 21.7 257.2 4.4 46.9 10 1 12 10441 08 35 50 08 56 06 --- 09 15 30 18.0 260.8 4.7 47.7 1197 R 1 2330 08 59 46 3C120 09 19 11 17.4 261.5 4.8 47.8 213 1 13 2330 08 59 26 09 19 43 --- 09 39 11 13.7 264.9 5.1 48.3 1197 F 1 5782 09 44 48 3C147 10 04 20 45.2 303.7 4.4 74.2 1436 1 13 5782 09 44 28 09 47 47 --- 10 07 20 44.8 303.9 4.4 73.8 180 F 1 7112 09 49 38 3C286 10 09 11 48.3 448.8 -3.4 -59.9 8 1 13 7112 09 49 18 09 52 38 --- 10 12 11 48.8 449.3 -3.3 -59.9 180 F 1 8442 10 39 44 3C147 10 59 25 36.9 307.7 5.3 66.3 2726 1 13 8442 10 39 24 10 42 44 --- 11 02 25 36.4 307.9 5.3 65.8 180 F 1 9772 10 45 09 3C286 11 04 51 58.6 99.1 -2.4 -58.7 0 1 13 9772 10 44 49 10 48 09 --- 11 07 51 59.2 99.8 -2.4 -58.5 180 F 1 11102 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 28.433607 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.21328 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 24.288816 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.69795 * 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 55.678126 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 20.68520 * 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 18.396963 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.65850 * 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 141.3 3C120 147.4 3C147 152.1 3C286 88.8 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