COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067h 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_LA (Code La ) 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 1 Dec 2003 Day 335 --- 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 44 25 3C147 23 17 30 22.9 44.1 -6.4 -61.1 0 1 1 0 01 44 05 01 47 25 --- 23 20 30 23.3 44.3 -6.4 -61.5 180 F 1 1330 01 49 24 3C120 23 22 30 13.1 92.8 -5.2 -54.5 81 1 1 1330 01 49 04 02 09 21 --- 23 42 30 17.1 95.8 -4.8 -54.2 1197 F 1 9442 02 09 35 J0423-0120 23 42 44 15.2 103.0 -4.7 -52.3 4 1 1 9442 02 09 21 02 12 35 =0420-014 23 45 44 15.7 103.5 -4.6 -52.1 180 F 1 10735 02 12 50 3C120 23 45 59 17.8 96.4 -4.8 -54.1 4 1 2 10735 02 12 35 02 32 46 --- 00 05 59 21.8 99.5 -4.5 -53.5 1197 R 1 16389 02 33 02 J0423-0120 00 06 15 19.8 106.8 -4.3 -51.0 5 1 2 16389 02 32 46 02 36 02 =0420-014 00 09 15 20.3 107.3 -4.2 -50.8 180 R 1 15087 02 36 17 3C120 00 09 31 22.6 100.0 -4.4 -53.4 5 1 2 15087 02 36 02 02 56 14 --- 00 29 31 26.5 103.3 -4.1 -52.5 1197 R 1 7004 02 57 18 3C147 00 30 35 33.7 49.3 -5.2 -72.6 22 1 2 7004 02 56 58 03 00 18 --- 00 33 35 34.2 49.5 -5.2 -73.1 180 R 1 5674 03 02 17 3C120 00 35 35 27.7 104.4 -4.0 -52.1 77 1 3 5674 03 01 57 03 22 14 --- 00 55 35 31.6 108.0 -3.6 -50.8 1197 F 1 2438 03 22 32 J0423-0120 00 55 53 29.1 115.8 -3.5 -47.0 7 1 3 2438 03 22 14 03 25 32 =0420-014 00 58 53 29.7 116.3 -3.4 -46.7 180 F 1 3754 03 25 49 3C120 00 59 11 32.3 108.6 -3.6 -50.6 6 1 3 3754 03 25 32 03 45 46 --- 01 19 11 36.1 112.5 -3.2 -48.8 1197 F 1 11850 03 46 04 J0423-0120 01 19 28 33.4 120.6 -3.1 -44.3 6 1 3 11850 03 45 46 03 49 03 =0420-014 01 22 28 33.9 121.2 -3.0 -43.9 180 F 1 13165 03 49 21 3C120 01 22 46 36.8 113.3 -3.2 -48.5 6 1 4 13165 03 49 03 04 09 18 --- 01 42 46 40.4 117.6 -2.8 -46.3 1197 R 1 13937 04 11 07 3C147 01 44 36 45.4 52.3 -4.0 -84.9 60 1 4 13937 04 10 47 04 14 07 --- 01 47 36 45.9 52.4 -3.9 -85.4 180 R 1 12607 Schedule for VLBA_LA (Code La ) 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 1 Dec 2003 Day 335 --- 04 16 07 3C120 01 49 36 41.7 119.1 -2.7 -45.4 69 1 4 12607 04 15 47 04 36 03 --- 02 09 36 45.1 124.1 -2.4 -42.5 1197 R 1 4495 04 36 24 J0423-0120 02 09 56 41.6 132.7 -2.2 -36.6 7 1 4 4495 04 36 03 04 39 23 =0420-014 02 12 56 42.0 133.5 -2.2 -36.1 180 R 1 3163 04 39 43 3C120 02 13 17 45.7 125.0 -2.3 -41.9 7 1 5 3163 04 39 23 04 59 40 --- 02 33 17 48.9 130.7 -2.0 -38.2 1197 F 1 4949 05 00 00 J0423-0120 02 33 37 44.9 139.4 -1.8 -31.9 6 1 5 4949 04 59 40 05 02 59 =0420-014 02 36 37 45.3 140.3 -1.8 -31.2 180 F 1 6278 05 03 19 3C120 02 36 57 49.5 131.8 -1.9 -37.4 6 1 5 6278 05 02 59 05 23 16 --- 02 56 57 52.4 138.2 -1.6 -32.9 1197 F 1 14389 05 25 12 3C147 02 58 53 57.3 51.6 -2.7 -99.7 52 1 5 14389 05 24 52 05 28 11 --- 03 01 53 57.8 51.4 -2.7 -100.4 180 F 1 15719 05 30 11 3C120 03 03 53 53.3 140.7 -1.5 -31.1 54 1 6 15719 05 29 51 05 50 08 --- 03 23 53 55.6 148.2 -1.2 -25.4 1197 R 1 11369 05 50 28 J0423-0120 03 24 13 50.4 156.4 -1.0 -19.0 4 1 6 11369 05 50 08 05 53 28 =0420-014 03 27 13 50.6 157.5 -0.9 -18.1 180 R 1 10037 05 53 48 3C120 03 27 33 56.0 149.7 -1.1 -24.3 3 1 6 10037 05 53 28 06 13 44 --- 03 47 33 57.8 158.2 -0.8 -17.6 1197 R 1 1924 06 14 05 J0423-0120 03 47 54 52.0 165.5 -0.6 -11.7 3 1 6 1924 06 13 44 06 17 04 =0420-014 03 50 54 52.1 166.7 -0.5 -10.8 180 R 1 592 06 17 24 3C120 03 51 14 58.1 159.8 -0.7 -16.3 2 1 7 592 06 17 04 06 37 21 --- 04 11 14 59.2 169.2 -0.4 -8.8 1197 F 1 7521 06 39 17 3C147 04 13 10 68.5 42.2 -1.5 -122.4 25 1 7 7521 06 38 57 06 42 16 --- 04 16 10 68.9 41.4 -1.4 -123.6 180 F 1 8851 06 44 16 3C120 04 18 10 59.4 172.5 -0.3 -6.1 26 1 7 8851 06 43 56 07 04 12 --- 04 38 10 59.6 182.3 0.1 1.9 1197 F 1 16962 07 04 33 J0423-0120 04 38 30 52.7 186.2 0.3 5.0 1 1 8 16962 07 04 12 07 07 32 =0420-014 04 41 30 52.7 187.4 0.3 6.0 180 R 1 16906 Schedule for VLBA_LA (Code La ) 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 1 Dec 2003 Day 335 --- 07 07 52 3C120 04 41 50 59.5 184.1 0.1 3.4 0 1 8 16906 07 07 32 07 27 49 --- 05 01 50 58.9 193.8 0.5 11.2 1197 R 1 8793 07 28 10 J0423-0120 05 02 11 51.8 195.8 0.6 12.7 0 1 8 8793 07 27 49 07 31 09 =0420-014 05 05 11 51.6 196.9 0.7 13.7 180 R 1 7460 07 31 29 3C120 05 05 31 58.7 195.5 0.5 12.6 0 1 9 7460 07 31 09 07 51 26 --- 05 25 31 57.3 204.6 0.9 19.8 1197 F 1 653 07 53 31 3C147 05 27 36 75.6 370.0 -0.3 -167.4 9 1 9 653 07 53 11 07 56 30 --- 05 30 36 75.7 368.1 -0.2 -169.8 180 F 1 1983 07 58 39 3C120 05 32 45 56.7 207.6 1.0 22.2 15 1 9 1983 07 58 19 08 18 35 --- 05 52 45 54.5 215.6 1.3 28.3 1197 F 1 10094 08 18 56 J0423-0120 05 53 05 47.4 214.3 1.5 27.2 0 1 9 10094 08 18 35 08 21 55 =0420-014 05 56 05 47.1 215.2 1.5 27.9 180 F 1 11426 08 22 15 3C120 05 56 25 54.1 217.0 1.4 29.4 0 1 10 11426 08 21 55 08 42 12 --- 06 16 25 51.5 224.0 1.7 34.5 1197 R 1 15661 08 42 32 J0423-0120 06 16 46 44.5 221.6 1.9 32.6 0 1 10 15661 08 42 12 08 45 32 =0420-014 06 19 46 44.1 222.5 1.9 33.3 180 R 1 14329 08 45 52 3C120 06 20 06 50.9 225.2 1.8 35.3 0 1 10 14329 08 45 32 09 05 49 --- 06 40 06 47.9 231.3 2.1 39.5 1197 R 1 6216 09 07 27 3C147 06 41 44 72.3 327.4 1.0 137.3 28 1 10 6216 09 07 07 09 10 26 --- 06 44 44 72.0 326.2 1.0 135.6 180 R 1 4886 09 12 26 3C120 06 46 44 46.8 233.1 2.2 40.7 52 1 11 4886 09 12 06 09 32 23 --- 07 06 44 43.5 238.3 2.6 43.9 1197 F 1 3225 09 32 43 J0423-0120 07 07 05 36.8 234.9 2.7 41.6 1 1 11 3225 09 32 23 09 35 43 =0420-014 07 10 05 36.3 235.6 2.8 42.0 180 F 1 4558 09 36 03 3C120 07 10 25 42.9 239.2 2.6 44.5 1 1 11 4558 09 35 43 09 56 00 --- 07 30 25 39.3 243.9 3.0 47.0 1197 F 1 12671 09 56 20 J0423-0120 07 30 45 32.8 240.1 3.1 44.7 1 1 11 12671 09 56 00 09 59 19 =0420-014 07 33 45 32.3 240.8 3.2 45.1 180 F 1 14003 Schedule for VLBA_LA (Code La ) 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 1 Dec 2003 Day 335 --- 09 59 39 3C120 07 34 06 38.6 244.7 3.0 47.4 1 1 12 14003 09 59 19 10 19 36 --- 07 54 06 34.9 248.8 3.3 49.4 1197 R 1 13085 10 21 32 3C147 07 56 02 62.2 310.8 2.2 107.6 55 1 12 13085 10 21 12 10 24 32 --- 07 59 02 61.7 310.5 2.3 106.8 180 R 1 11755 10 26 59 3C286 08 01 29 22.9 428.0 -5.5 -60.8 63 1 12 11755 10 26 39 10 29 58 --- 08 04 29 23.4 428.3 -5.4 -61.0 180 R 1 10425 10 32 13 3C120 08 06 45 32.5 251.2 3.6 50.5 11 1 12 10425 10 31 53 10 52 10 --- 08 26 45 28.6 254.8 3.9 51.9 1197 R 1 2314 10 52 30 J0423-0120 08 27 05 22.4 250.9 4.1 50.1 2 1 12 2314 10 52 10 10 55 30 =0420-014 08 30 05 21.8 251.4 4.1 50.3 180 R 1 982 10 55 50 3C120 08 30 25 27.9 255.5 4.0 52.1 2 1 13 982 10 55 30 11 15 46 --- 08 50 25 23.9 258.8 4.3 53.1 1197 F 1 7129 11 16 06 J0423-0120 08 50 45 17.8 254.8 4.5 51.6 2 1 13 7129 11 15 46 11 19 06 =0420-014 08 53 45 17.2 255.3 4.5 51.7 180 F 1 8458 11 19 25 3C120 08 54 05 23.2 259.4 4.3 53.2 2 1 13 8458 11 19 06 11 39 22 --- 09 14 05 19.2 262.6 4.7 53.9 1197 F 1 16567 11 40 46 3C147 09 15 29 49.5 307.4 3.5 89.6 18 1 14 16567 11 40 26 11 43 46 --- 09 18 29 49.0 307.4 3.6 89.0 180 R 1 17303 11 46 15 3C286 09 20 58 38.2 436.8 -4.2 -66.4 56 1 14 17303 11 45 55 11 49 14 --- 09 23 58 38.8 437.1 -4.1 -66.6 180 R 1 15973 11 51 25 3C120 09 26 10 16.8 264.5 4.9 54.2 10 1 14 15973 11 51 05 12 11 22 --- 09 46 10 12.7 267.5 5.2 54.5 1197 R 1 7861 12 32 47 3C147 10 07 38 41.2 308.4 4.4 80.3 1222 1 14 7861 12 32 27 12 35 46 --- 10 10 38 40.7 308.5 4.5 79.8 180 R 1 6531 12 37 49 3C286 10 12 41 48.5 442.6 -3.3 -69.0 27 1 14 6531 12 37 29 12 40 48 --- 10 15 41 49.1 442.9 -3.3 -69.1 180 R 1 5201 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 28.273501 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 55.06500 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 24.089167 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 50.90282 * 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 55.120953 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 16.18429 * 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 17.517483 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 18.25107 * 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 156.9 3C120 163.6 3C147 148.2 3C286 67.3 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