COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067n 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 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 35 28 3C147 00 06 11 33.9 50.6 -5.6 -63.4 0 1 1 0 00 35 08 00 38 28 --- 00 09 11 34.3 50.9 -5.6 -63.8 180 F 1 1330 00 40 27 3C120 00 11 11 21.7 102.7 -4.4 -46.9 79 1 1 1330 00 40 07 01 00 24 --- 00 31 11 25.3 106.5 -4.0 -45.9 1197 F 1 9442 01 00 38 J0423-0120 00 31 25 22.3 113.6 -3.9 -43.1 2 1 1 9442 01 00 24 01 03 38 =0420-014 00 34 25 22.8 114.2 -3.8 -42.9 180 F 1 10733 01 03 52 3C120 00 34 39 25.9 107.1 -4.0 -45.7 2 1 2 10733 01 03 38 01 23 49 --- 00 54 39 29.4 111.1 -3.6 -44.3 1197 R 1 16394 01 24 04 J0423-0120 00 54 55 26.2 118.4 -3.5 -41.0 3 1 2 16394 01 23 49 01 27 03 =0420-014 00 57 55 26.7 119.0 -3.4 -40.7 180 R 1 15096 01 27 19 3C120 00 58 10 30.0 111.8 -3.6 -44.1 3 1 2 15096 01 27 03 01 47 15 --- 01 18 10 33.5 116.1 -3.3 -42.3 1197 R 1 7016 01 48 16 3C147 01 19 11 44.9 56.1 -4.4 -73.9 15 1 2 7016 01 47 56 01 51 16 --- 01 22 11 45.3 56.3 -4.3 -74.3 180 R 1 5686 01 53 15 3C120 01 24 11 34.5 117.4 -3.2 -41.7 73 1 3 5686 01 52 55 02 13 12 --- 01 44 11 37.7 122.1 -2.8 -39.4 1197 F 1 2425 02 13 30 J0423-0120 01 44 29 33.9 129.6 -2.6 -35.1 4 1 3 2425 02 13 12 02 16 29 =0420-014 01 47 29 34.3 130.4 -2.6 -34.6 180 F 1 3740 02 16 47 3C120 01 47 46 38.3 123.0 -2.8 -38.9 4 1 3 3740 02 16 29 02 36 44 --- 02 07 46 41.3 128.1 -2.4 -36.1 1197 F 1 11836 02 37 01 J0423-0120 02 08 04 37.1 135.7 -2.3 -31.4 3 1 3 11836 02 36 44 02 40 01 =0420-014 02 11 04 37.5 136.5 -2.2 -30.9 180 F 1 13150 02 40 18 3C120 02 11 22 41.8 129.1 -2.4 -35.5 3 1 4 13150 02 40 01 03 00 15 --- 02 31 22 44.6 134.8 -2.0 -32.1 1197 R 1 13954 03 01 55 3C147 02 33 02 56.5 59.5 -3.2 -85.4 44 1 4 13954 03 01 35 03 04 55 --- 02 36 02 57.0 59.6 -3.1 -85.9 180 R 1 12624 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 03 06 55 3C120 02 38 02 45.5 136.8 -1.9 -30.9 62 1 4 12624 03 06 35 03 26 51 --- 02 58 02 47.9 143.1 -1.6 -26.7 1197 R 1 4513 03 27 12 J0423-0120 02 58 23 42.8 150.4 -1.4 -21.6 4 1 4 4513 03 26 51 03 30 11 =0420-014 03 01 23 43.1 151.3 -1.4 -21.0 180 R 1 3181 03 30 31 3C120 03 01 43 48.3 144.4 -1.5 -25.9 4 1 5 3181 03 30 11 03 50 28 --- 03 21 43 50.2 151.4 -1.2 -21.0 1197 F 1 4932 03 50 48 J0423-0120 03 22 03 44.7 158.1 -1.0 -16.1 3 1 5 4932 03 50 28 03 53 48 =0420-014 03 25 03 44.9 159.1 -1.0 -15.4 180 F 1 6262 03 54 07 3C120 03 25 23 50.6 152.7 -1.1 -20.1 2 1 5 6262 03 53 48 04 14 04 --- 03 45 23 52.1 160.3 -0.8 -14.6 1197 F 1 14372 04 15 52 3C147 03 47 11 68.4 58.1 -1.9 -100.9 34 1 5 14372 04 15 32 04 18 51 --- 03 50 11 68.9 57.8 -1.9 -101.7 180 F 1 15702 04 20 51 3C120 03 52 11 52.5 163.0 -0.7 -12.6 44 1 6 15702 04 20 31 04 40 48 --- 04 12 11 53.3 171.1 -0.4 -6.6 1197 R 1 11386 04 41 08 J0423-0120 04 12 31 46.8 176.0 -0.2 -3.0 1 1 6 11386 04 40 48 04 44 08 =0420-014 04 15 31 46.9 177.1 -0.1 -2.2 180 R 1 10054 04 44 28 3C120 04 15 51 53.4 172.7 -0.3 -5.5 1 1 6 10054 04 44 08 05 04 24 --- 04 35 51 53.6 181.0 0.0 0.8 1197 R 1 1941 05 04 45 J0423-0120 04 36 12 46.8 184.6 0.2 3.5 1 1 6 1941 05 04 24 05 07 44 =0420-014 04 39 12 46.7 185.7 0.3 4.3 180 R 1 609 05 08 05 3C120 04 39 32 53.6 182.6 0.1 1.9 1 1 7 609 05 07 44 05 28 01 --- 04 59 32 53.1 190.9 0.4 8.1 1197 F 1 7504 05 29 49 3C147 05 01 20 79.2 38.2 -0.7 -134.3 0 1 7 7504 05 29 29 05 32 49 --- 05 04 20 79.5 36.4 -0.6 -136.7 180 F 1 8834 05 34 48 3C120 05 06 20 52.9 193.7 0.5 10.2 9 1 7 8834 05 34 28 05 54 45 --- 05 26 20 51.7 201.6 0.9 16.0 1197 F 1 16945 05 55 05 J0423-0120 05 26 41 44.6 202.5 1.1 16.6 0 1 8 16945 05 54 45 05 58 05 =0420-014 05 29 41 44.4 203.5 1.1 17.3 180 R 1 16923 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 05 58 25 3C120 05 30 01 51.5 203.0 0.9 17.0 0 1 8 16923 05 58 05 06 18 22 --- 05 50 01 49.8 210.4 1.3 22.3 1197 R 1 8810 06 18 42 J0423-0120 05 50 21 42.6 210.2 1.4 22.0 0 1 8 8810 06 18 22 06 21 42 =0420-014 05 53 21 42.3 211.1 1.5 22.7 180 R 1 7477 06 22 02 3C120 05 53 41 49.4 211.7 1.3 23.2 0 1 9 7477 06 21 42 06 41 58 --- 06 13 41 47.3 218.5 1.7 27.8 1197 F 1 635 06 44 03 3C147 06 15 47 80.1 327.6 0.5 141.7 46 1 9 635 06 43 43 06 47 03 --- 06 18 47 79.8 325.4 0.6 139.0 180 F 1 1966 06 49 11 3C120 06 20 55 46.4 220.8 1.8 29.3 52 1 9 1966 06 48 51 07 09 08 --- 06 40 55 43.9 226.8 2.1 33.1 1197 F 1 10077 07 09 28 J0423-0120 06 41 15 36.8 224.9 2.3 31.8 0 1 9 10077 07 09 08 07 12 27 =0420-014 06 44 15 36.4 225.7 2.3 32.3 180 F 1 11409 07 12 48 3C120 06 44 36 43.3 227.9 2.2 33.7 0 1 10 11409 07 12 27 07 32 44 --- 07 04 36 40.5 233.3 2.5 36.9 1197 R 1 15678 07 33 05 J0423-0120 07 04 56 33.5 231.0 2.7 35.4 0 1 10 15678 07 32 44 07 36 04 =0420-014 07 07 56 33.1 231.7 2.7 35.8 180 R 1 14346 07 36 24 3C120 07 08 16 39.9 234.3 2.6 37.5 1 1 10 14346 07 36 04 07 56 21 --- 07 28 16 36.8 239.2 2.9 40.1 1197 R 1 6233 07 58 25 3C147 07 30 21 69.8 302.7 1.8 103.2 52 1 10 6233 07 58 05 08 01 25 --- 07 33 21 69.3 302.4 1.8 102.4 180 R 1 4903 08 03 40 3C120 07 35 36 35.6 241.0 3.0 40.9 62 1 11 4903 08 03 20 08 23 37 --- 07 55 36 32.3 245.4 3.4 42.9 1197 F 1 3209 08 23 57 J0423-0120 07 55 57 25.6 242.5 3.5 41.4 1 1 11 3209 08 23 37 08 26 57 =0420-014 07 58 57 25.1 243.1 3.6 41.7 180 F 1 4541 08 27 17 3C120 07 59 17 31.7 246.2 3.4 43.3 1 1 11 4541 08 26 57 08 47 14 --- 08 19 17 28.2 250.3 3.8 44.9 1197 F 1 12654 08 47 34 J0423-0120 08 19 38 21.6 247.2 3.9 43.5 1 1 11 12654 08 47 14 08 50 33 =0420-014 08 22 38 21.1 247.8 4.0 43.7 180 F 1 13986 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) ---------------------------------------------------------------------------------------- --- Tue 16 Dec 2003 Day 350 --- 08 50 54 3C120 08 22 58 27.5 251.1 3.8 45.1 1 1 12 13986 08 50 33 09 10 50 --- 08 42 58 24.0 254.9 4.2 46.3 1197 R 1 13101 09 12 38 3C147 08 44 46 57.8 300.3 3.0 86.8 34 1 12 13101 09 12 18 09 15 37 --- 08 47 46 57.3 300.4 3.1 86.3 180 R 1 11771 09 18 05 3C286 08 50 14 33.7 437.2 -4.7 -57.6 51 1 12 11771 09 17 45 09 21 05 --- 08 53 14 34.3 437.6 -4.6 -57.7 180 R 1 10441 09 23 20 3C120 08 55 30 21.7 257.2 4.4 46.9 10 1 12 10441 09 23 00 09 43 17 --- 09 15 30 18.0 260.8 4.7 47.7 1197 R 1 2330 09 46 57 3C120 09 19 11 17.4 261.5 4.8 47.8 213 1 13 2330 09 46 37 10 06 54 --- 09 39 11 13.7 264.9 5.1 48.3 1197 F 1 5782 10 31 59 3C147 10 04 20 45.2 303.7 4.4 74.2 1436 1 13 5782 10 31 39 10 34 58 --- 10 07 20 44.8 303.9 4.4 73.8 180 F 1 7112 10 36 49 3C286 10 09 11 48.3 448.8 -3.4 -59.9 8 1 13 7112 10 36 29 10 39 49 --- 10 12 11 48.8 449.3 -3.3 -59.9 180 F 1 8442 11 26 55 3C147 10 59 25 36.9 307.7 5.3 66.3 2726 1 13 8442 11 26 35 11 29 55 --- 11 02 25 36.4 307.9 5.3 65.8 180 F 1 9772 11 32 20 3C286 11 04 51 58.6 99.1 -2.4 -58.7 0 1 13 9772 11 32 00 11 35 20 --- 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 28.382419 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 56.87022 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 24.219961 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 49.64022 * 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 55.464060 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 18.61448 * 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 17.965710 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 13.94197 * 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 150.1 3C120 157.0 3C147 153.4 3C286 79.1 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