COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067j 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_HN (Code Hn ) 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 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 06 55 3C147 01 24 32 46.3 57.5 -4.3 -73.2 0 1 1 0 01 06 35 01 09 55 --- 01 27 32 46.8 57.7 -4.3 -73.7 180 F 1 1330 01 11 54 3C120 01 29 32 34.8 119.4 -3.1 -39.9 73 1 1 1330 01 11 34 01 31 51 --- 01 49 32 37.9 124.2 -2.7 -37.5 1197 F 1 9442 01 32 05 J0423-0120 01 49 46 33.9 131.5 -2.6 -33.2 0 1 1 9442 01 31 51 01 35 05 =0420-014 01 52 46 34.3 132.3 -2.5 -32.8 180 F 1 10733 01 35 19 3C120 01 53 00 38.4 125.1 -2.7 -37.0 0 1 2 10733 01 35 05 01 55 16 --- 02 13 00 41.3 130.4 -2.3 -34.1 1197 R 1 16394 01 55 31 J0423-0120 02 13 16 36.9 137.7 -2.2 -29.5 1 1 2 16394 01 55 16 01 58 31 =0420-014 02 16 16 37.3 138.5 -2.1 -29.0 180 R 1 15096 01 58 46 3C120 02 16 31 41.8 131.3 -2.3 -33.5 0 1 2 15096 01 58 31 02 18 43 --- 02 36 31 44.4 137.1 -1.9 -30.0 1197 R 1 7016 02 19 43 3C147 02 37 32 57.8 61.2 -3.1 -84.3 4 1 2 7016 02 19 23 02 22 43 --- 02 40 32 58.3 61.3 -3.0 -84.8 180 R 1 5686 02 24 43 3C120 02 42 32 45.2 139.0 -1.8 -28.9 62 1 3 5686 02 24 23 02 44 39 --- 03 02 32 47.4 145.4 -1.5 -24.7 1197 F 1 2425 02 44 57 J0423-0120 03 02 50 42.2 152.3 -1.3 -19.9 1 1 3 2425 02 44 39 02 47 57 =0420-014 03 05 50 42.4 153.3 -1.3 -19.2 180 F 1 3740 02 48 14 3C120 03 06 07 47.8 146.6 -1.5 -23.9 1 1 3 3740 02 47 57 03 08 11 --- 03 26 07 49.6 153.6 -1.1 -19.1 1197 F 1 11836 03 08 29 J0423-0120 03 26 25 43.9 160.0 -1.0 -14.5 0 1 3 11836 03 08 11 03 11 28 =0420-014 03 29 25 44.1 161.0 -0.9 -13.8 180 F 1 13150 03 11 46 3C120 03 29 43 49.9 154.9 -1.1 -18.2 0 1 4 13150 03 11 28 03 31 42 --- 03 49 43 51.2 162.5 -0.7 -12.8 1197 R 1 13954 03 33 23 3C147 03 51 23 69.7 60.4 -1.9 -99.2 26 1 4 13954 03 33 03 03 36 22 --- 03 54 23 70.2 60.1 -1.8 -100.0 180 R 1 12624 Schedule for VLBA_HN (Code Hn ) 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 03 38 22 3C120 03 56 23 51.5 165.1 -0.6 -10.9 44 1 4 12624 03 38 02 03 58 19 --- 04 16 23 52.2 173.1 -0.3 -5.1 1197 R 1 4513 03 58 39 J0423-0120 04 16 44 45.7 177.6 -0.1 -1.8 1 1 4 4513 03 58 19 04 01 38 =0420-014 04 19 44 45.7 178.7 -0.1 -1.0 180 R 1 3181 04 01 59 3C120 04 20 04 52.3 174.6 -0.2 -4.0 1 1 5 3181 04 01 38 04 21 55 --- 04 40 04 52.4 182.7 0.1 2.0 1197 F 1 4932 04 22 15 J0423-0120 04 40 24 45.6 186.0 0.3 4.4 0 1 5 4932 04 21 55 04 25 15 =0420-014 04 43 24 45.5 187.1 0.3 5.2 180 F 1 6262 04 25 35 3C120 04 43 44 52.4 184.2 0.2 3.1 0 1 5 6262 04 25 15 04 45 31 --- 05 03 44 51.8 192.3 0.5 9.0 1197 F 1 14372 04 47 19 3C147 05 05 32 80.6 39.7 -0.6 -133.6 0 1 5 14372 04 46 59 04 50 19 --- 05 08 32 80.9 37.5 -0.6 -136.2 180 F 1 15702 04 52 18 3C120 05 10 32 51.5 195.0 0.6 10.9 9 1 6 15702 04 51 58 05 12 15 --- 05 30 32 50.4 202.6 1.0 16.4 1197 R 1 11386 05 12 35 J0423-0120 05 30 52 43.2 203.4 1.1 16.9 0 1 6 11386 05 12 15 05 15 35 =0420-014 05 33 52 43.0 204.4 1.2 17.6 180 R 1 10054 05 15 55 3C120 05 34 13 50.1 204.0 1.0 17.4 0 1 6 10054 05 15 35 05 35 52 --- 05 54 13 48.4 211.2 1.3 22.4 1197 R 1 1941 05 36 12 J0423-0120 05 54 33 41.2 211.0 1.5 22.1 0 1 6 1941 05 35 52 05 39 12 =0420-014 05 57 33 40.9 211.9 1.6 22.8 180 R 1 609 05 39 32 3C120 05 57 53 48.0 212.5 1.4 23.2 0 1 7 609 05 39 12 05 59 29 --- 06 17 53 45.9 219.0 1.7 27.6 1197 F 1 7504 06 01 16 3C147 06 19 41 80.6 320.8 0.6 134.1 32 1 7 7504 06 00 56 06 04 16 --- 06 22 41 80.3 318.8 0.7 131.6 180 F 1 8834 06 06 15 3C120 06 24 41 45.1 221.2 1.9 29.0 43 1 7 8834 06 05 55 06 26 12 --- 06 44 41 42.6 227.1 2.2 32.6 1197 F 1 16945 06 26 33 J0423-0120 06 45 02 35.5 225.3 2.4 31.4 0 1 8 16945 06 26 12 06 29 32 =0420-014 06 48 02 35.1 226.1 2.4 31.9 180 R 1 16923 Schedule for VLBA_HN (Code Hn ) 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 06 29 52 3C120 06 48 22 42.1 228.1 2.2 33.2 0 1 8 16923 06 29 32 06 49 49 --- 07 08 22 39.2 233.5 2.6 36.3 1197 R 1 8810 06 50 09 J0423-0120 07 08 42 32.3 231.3 2.8 34.9 0 1 8 8810 06 49 49 06 53 09 =0420-014 07 11 42 31.8 232.0 2.8 35.3 180 R 1 7477 06 53 29 3C120 07 12 02 38.7 234.5 2.6 36.8 1 1 9 7477 06 53 09 07 13 26 --- 07 32 02 35.6 239.4 3.0 39.3 1197 F 1 635 07 15 31 3C147 07 34 08 69.8 299.7 1.9 99.3 51 1 9 635 07 15 11 07 18 30 --- 07 37 08 69.3 299.4 1.9 98.5 180 F 1 1966 07 20 38 3C120 07 39 16 34.5 241.1 3.1 40.1 52 1 9 1966 07 20 18 07 40 35 --- 07 59 16 31.2 245.6 3.4 42.0 1197 F 1 10077 07 40 55 J0423-0120 07 59 37 24.5 242.7 3.6 40.6 1 1 9 10077 07 40 35 07 43 55 =0420-014 08 02 37 24.0 243.4 3.7 40.9 180 F 1 11409 07 44 15 3C120 08 02 57 30.6 246.3 3.5 42.3 1 1 10 11409 07 43 55 08 04 12 --- 08 22 57 27.2 250.5 3.8 43.9 1197 R 1 15678 08 04 32 J0423-0120 08 23 17 20.5 247.5 4.0 42.6 1 1 10 15678 08 04 12 08 07 31 =0420-014 08 26 17 20.0 248.1 4.0 42.8 180 R 1 14346 08 07 52 3C120 08 26 37 26.5 251.2 3.9 44.1 1 1 10 14346 08 07 31 08 27 48 --- 08 46 37 23.0 255.1 4.2 45.3 1197 R 1 6233 08 29 52 3C147 08 48 42 57.8 298.8 3.1 84.2 48 1 10 6233 08 29 32 08 32 52 --- 08 51 42 57.3 298.9 3.1 83.7 180 R 1 4903 08 35 07 3C120 08 53 58 21.7 256.5 4.3 45.6 58 1 11 4903 08 34 47 08 55 04 --- 09 13 58 18.1 260.2 4.7 46.4 1197 F 1 3209 08 58 44 3C120 09 17 38 17.5 260.8 4.7 46.6 213 1 11 3209 08 58 24 09 18 41 --- 09 37 38 13.8 264.4 5.1 47.0 1197 F 1 11320 09 44 05 3C147 10 03 07 46.0 302.6 4.3 73.0 1454 1 11 11320 09 43 45 09 47 05 --- 10 06 07 45.6 302.8 4.4 72.6 180 F 1 12650 09 49 33 3C286 10 08 35 48.2 90.0 -3.4 -58.2 0 1 11 12650 09 49 13 09 52 32 --- 10 11 35 48.7 90.6 -3.3 -58.2 180 F 1 13980 Schedule for VLBA_HN (Code Hn ) 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) ---------------------------------------------------------------------------------------- --- Mon 8 Dec 2003 Day 342 --- 11 03 26 3C147 11 22 41 34.2 -51.0 5.7 61.9 4154 1 11 13980 11 03 06 11 06 26 --- 11 25 41 33.8 -50.7 5.7 61.5 180 F 1 15310 11 08 16 3C286 11 27 32 62.5 106.6 -2.1 -54.5 0 1 11 15310 11 07 56 11 11 16 --- 11 30 32 63.0 107.4 -2.0 -54.2 180 F 1 16640 11 58 23 3C147 12 17 46 26.7 -45.5 6.6 54.1 2719 1 12 16640 11 58 03 12 01 22 --- 12 20 46 26.3 -45.2 6.6 53.7 180 R 1 17230 12 03 47 3C286 12 23 12 71.6 127.0 -1.1 -42.8 24 1 12 17230 12 03 27 12 06 47 --- 12 26 12 72.0 128.5 -1.1 -41.7 180 R 1 15899 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 28.312279 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 56.10126 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 24.137657 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.12577 * 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 55.264056 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 17.13387 * 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 17.691925 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 16.38868 * 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 154.5 3C120 161.7 3C147 151.4 3C286 72.7 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