COVER INFORMATION Station: VLBA_NL (Code Nl ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067i 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 3 Dec 2003 Day 337 --- 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 01 26 35 3C147 00 06 11 33.9 50.6 -5.6 -63.4 0 1 1 0 01 26 15 01 29 34 --- 00 09 11 34.3 50.9 -5.6 -63.8 180 F 1 1330 01 31 34 3C120 00 11 11 21.7 102.7 -4.4 -46.9 79 1 1 1330 01 31 14 01 51 31 --- 00 31 11 25.3 106.5 -4.0 -45.9 1197 F 1 9442 01 51 45 J0423-0120 00 31 25 22.3 113.6 -3.9 -43.1 2 1 1 9442 01 51 31 01 54 44 =0420-014 00 34 25 22.8 114.2 -3.8 -42.9 180 F 1 10733 01 54 59 3C120 00 34 39 25.9 107.1 -4.0 -45.7 2 1 2 10733 01 54 44 02 14 55 --- 00 54 39 29.4 111.1 -3.6 -44.3 1197 R 1 16394 02 15 11 J0423-0120 00 54 55 26.2 118.4 -3.5 -41.0 3 1 2 16394 02 14 55 02 18 10 =0420-014 00 57 55 26.7 119.0 -3.4 -40.7 180 R 1 15096 02 18 25 3C120 00 58 10 30.0 111.8 -3.6 -44.1 3 1 2 15096 02 18 10 02 38 22 --- 01 18 10 33.5 116.1 -3.3 -42.3 1197 R 1 7016 02 39 23 3C147 01 19 11 44.9 56.1 -4.4 -73.9 15 1 2 7016 02 39 03 02 42 22 --- 01 22 11 45.3 56.3 -4.3 -74.3 180 R 1 5686 02 44 22 3C120 01 24 11 34.5 117.4 -3.2 -41.7 73 1 3 5686 02 44 02 03 04 19 --- 01 44 11 37.7 122.1 -2.8 -39.4 1197 F 1 2425 03 04 37 J0423-0120 01 44 29 33.9 129.6 -2.6 -35.1 4 1 3 2425 03 04 19 03 07 36 =0420-014 01 47 29 34.3 130.4 -2.6 -34.6 180 F 1 3740 03 07 54 3C120 01 47 46 38.3 123.0 -2.8 -38.9 4 1 3 3740 03 07 36 03 27 50 --- 02 07 46 41.3 128.1 -2.4 -36.1 1197 F 1 11836 03 28 08 J0423-0120 02 08 04 37.1 135.7 -2.3 -31.4 3 1 3 11836 03 27 50 03 31 08 =0420-014 02 11 04 37.5 136.5 -2.2 -30.9 180 F 1 13150 03 31 25 3C120 02 11 22 41.8 129.1 -2.4 -35.5 3 1 4 13150 03 31 08 03 51 22 --- 02 31 22 44.6 134.8 -2.0 -32.1 1197 R 1 13954 03 53 02 3C147 02 33 02 56.5 59.5 -3.2 -85.4 44 1 4 13954 03 52 42 03 56 02 --- 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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 03 58 01 3C120 02 38 02 45.5 136.8 -1.9 -30.9 62 1 4 12624 03 57 41 04 17 58 --- 02 58 02 47.9 143.1 -1.6 -26.7 1197 R 1 4513 04 18 18 J0423-0120 02 58 23 42.8 150.4 -1.4 -21.6 4 1 4 4513 04 17 58 04 21 18 =0420-014 03 01 23 43.1 151.3 -1.4 -21.0 180 R 1 3181 04 21 38 3C120 03 01 43 48.3 144.4 -1.5 -25.9 4 1 5 3181 04 21 18 04 41 35 --- 03 21 43 50.2 151.4 -1.2 -21.0 1197 F 1 4932 04 41 55 J0423-0120 03 22 03 44.7 158.1 -1.0 -16.1 3 1 5 4932 04 41 35 04 44 54 =0420-014 03 25 03 44.9 159.1 -1.0 -15.4 180 F 1 6262 04 45 14 3C120 03 25 23 50.6 152.7 -1.1 -20.1 2 1 5 6262 04 44 54 05 05 11 --- 03 45 23 52.1 160.3 -0.8 -14.6 1197 F 1 14372 05 06 59 3C147 03 47 11 68.4 58.1 -1.9 -100.9 34 1 5 14372 05 06 39 05 09 58 --- 03 50 11 68.9 57.8 -1.9 -101.7 180 F 1 15702 05 11 58 3C120 03 52 11 52.5 163.0 -0.7 -12.6 44 1 6 15702 05 11 38 05 31 55 --- 04 12 11 53.3 171.1 -0.4 -6.6 1197 R 1 11386 05 32 15 J0423-0120 04 12 31 46.8 176.0 -0.2 -3.0 1 1 6 11386 05 31 55 05 35 14 =0420-014 04 15 31 46.9 177.1 -0.1 -2.2 180 R 1 10054 05 35 35 3C120 04 15 51 53.4 172.7 -0.3 -5.5 1 1 6 10054 05 35 14 05 55 31 --- 04 35 51 53.6 181.0 0.0 0.8 1197 R 1 1941 05 55 52 J0423-0120 04 36 12 46.8 184.6 0.2 3.5 1 1 6 1941 05 55 31 05 58 51 =0420-014 04 39 12 46.7 185.7 0.3 4.3 180 R 1 609 05 59 11 3C120 04 39 32 53.6 182.6 0.1 1.9 1 1 7 609 05 58 51 06 19 08 --- 04 59 32 53.1 190.9 0.4 8.1 1197 F 1 7504 06 20 56 3C147 05 01 20 79.2 38.2 -0.7 -134.3 0 1 7 7504 06 20 36 06 23 55 --- 05 04 20 79.5 36.4 -0.6 -136.7 180 F 1 8834 06 25 55 3C120 05 06 20 52.9 193.7 0.5 10.2 9 1 7 8834 06 25 35 06 45 52 --- 05 26 20 51.7 201.6 0.9 16.0 1197 F 1 16945 06 46 12 J0423-0120 05 26 41 44.6 202.5 1.1 16.6 0 1 8 16945 06 45 52 06 49 12 =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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 06 49 32 3C120 05 30 01 51.5 203.0 0.9 17.0 0 1 8 16923 06 49 12 07 09 28 --- 05 50 01 49.8 210.4 1.3 22.3 1197 R 1 8810 07 09 49 J0423-0120 05 50 21 42.6 210.2 1.4 22.0 0 1 8 8810 07 09 28 07 12 48 =0420-014 05 53 21 42.3 211.1 1.5 22.7 180 R 1 7477 07 13 09 3C120 05 53 41 49.4 211.7 1.3 23.2 0 1 9 7477 07 12 48 07 33 05 --- 06 13 41 47.3 218.5 1.7 27.8 1197 F 1 635 07 35 10 3C147 06 15 47 80.1 327.6 0.5 141.7 46 1 9 635 07 34 50 07 38 10 --- 06 18 47 79.8 325.4 0.6 139.0 180 F 1 1966 07 40 18 3C120 06 20 55 46.4 220.8 1.8 29.3 52 1 9 1966 07 39 58 08 00 14 --- 06 40 55 43.9 226.8 2.1 33.1 1197 F 1 10077 08 00 35 J0423-0120 06 41 15 36.8 224.9 2.3 31.8 0 1 9 10077 08 00 14 08 03 34 =0420-014 06 44 15 36.4 225.7 2.3 32.3 180 F 1 11409 08 03 55 3C120 06 44 36 43.3 227.9 2.2 33.7 0 1 10 11409 08 03 34 08 23 51 --- 07 04 36 40.5 233.3 2.5 36.9 1197 R 1 15678 08 24 12 J0423-0120 07 04 56 33.5 231.0 2.7 35.4 0 1 10 15678 08 23 51 08 27 11 =0420-014 07 07 56 33.1 231.7 2.7 35.8 180 R 1 14346 08 27 31 3C120 07 08 16 39.9 234.3 2.6 37.5 1 1 10 14346 08 27 11 08 47 28 --- 07 28 16 36.8 239.2 2.9 40.1 1197 R 1 6233 08 49 32 3C147 07 30 21 69.8 302.7 1.8 103.2 52 1 10 6233 08 49 12 08 52 31 --- 07 33 21 69.3 302.4 1.8 102.4 180 R 1 4903 08 54 47 3C120 07 35 37 35.6 241.0 3.0 40.9 62 1 11 4903 08 54 27 09 14 44 --- 07 55 37 32.3 245.4 3.4 42.9 1197 F 1 3209 09 15 04 J0423-0120 07 55 57 25.6 242.5 3.5 41.4 1 1 11 3209 09 14 44 09 18 03 =0420-014 07 58 57 25.1 243.1 3.6 41.7 180 F 1 4541 09 18 24 3C120 07 59 17 31.7 246.2 3.4 43.3 1 1 11 4541 09 18 03 09 38 20 --- 08 19 17 28.2 250.3 3.8 44.9 1197 F 1 12654 09 38 41 J0423-0120 08 19 38 21.6 247.2 3.9 43.5 1 1 11 12654 09 38 20 09 41 40 =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) ---------------------------------------------------------------------------------------- --- Wed 3 Dec 2003 Day 337 --- 09 42 00 3C120 08 22 58 27.5 251.1 3.8 45.1 1 1 12 13986 09 41 40 10 01 57 --- 08 42 58 24.0 254.9 4.2 46.3 1197 R 1 13101 10 03 45 3C147 08 44 46 57.8 300.3 3.0 86.8 34 1 12 13101 10 03 25 10 06 44 --- 08 47 46 57.3 300.4 3.1 86.3 180 R 1 11771 10 09 12 3C286 08 50 14 33.7 437.2 -4.7 -57.6 51 1 12 11771 10 08 52 10 12 12 --- 08 53 14 34.3 437.6 -4.6 -57.7 180 R 1 10441 10 14 27 3C120 08 55 30 21.7 257.2 4.4 46.9 10 1 12 10441 10 14 07 10 34 24 --- 09 15 30 18.0 260.8 4.7 47.7 1197 R 1 2330 10 38 04 3C120 09 19 11 17.4 261.5 4.8 47.8 213 1 13 2330 10 37 44 10 58 01 --- 09 39 11 13.7 264.9 5.1 48.3 1197 F 1 5782 11 23 06 3C147 10 04 20 45.2 303.7 4.4 74.2 1436 1 13 5782 11 22 46 11 26 05 --- 10 07 20 44.8 303.9 4.4 73.8 180 F 1 7112 11 27 56 3C286 10 09 11 48.3 448.8 -3.4 -59.9 8 1 13 7112 11 27 36 11 30 55 --- 10 12 11 48.9 449.3 -3.3 -59.9 180 F 1 8442 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 28.280918 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 55.31203 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 24.098907 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.73265 * 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 55.155753 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 16.51553 * 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 17.562950 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 17.71993 * 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 156.4 3C120 163.3 3C147 149.3 3C286 68.8 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