COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067q 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_OV (Code Ov ) 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 31 Dec 2003 Day 365 --- 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 06 24 3C147 22 49 22 20.1 41.9 -6.9 -55.6 0 1 1 0 00 06 04 00 09 24 --- 22 52 22 20.5 42.2 -6.8 -56.0 180 F 1 1330 00 34 51 3C120 23 17 53 12.1 92.4 -5.3 -53.0 1488 1 1 1330 00 34 31 00 54 48 --- 23 37 53 16.1 95.5 -4.9 -52.7 1197 F 1 9442 00 55 05 J0423-0120 23 38 10 13.9 102.6 -4.8 -51.0 6 1 1 9442 00 54 48 00 58 04 =0420-014 23 41 10 14.5 103.1 -4.7 -50.9 180 F 1 10750 00 58 21 3C120 23 41 27 16.8 96.1 -4.9 -52.7 6 1 2 10750 00 58 04 01 18 18 --- 00 01 27 20.7 99.3 -4.5 -52.1 1197 R 1 16359 01 19 30 3C147 00 02 39 30.4 48.2 -5.7 -66.9 32 1 2 16359 01 19 10 01 22 29 --- 00 05 39 30.9 48.4 -5.6 -67.4 180 R 1 15029 01 24 29 3C120 00 07 39 21.9 100.3 -4.4 -51.9 79 1 2 15029 01 24 09 01 44 25 --- 00 27 39 25.8 103.7 -4.1 -51.0 1197 R 1 6918 01 44 43 J0423-0120 00 27 57 23.4 111.2 -3.9 -48.0 7 1 2 6918 01 44 25 01 47 43 =0420-014 00 30 57 24.0 111.7 -3.9 -47.7 180 R 1 5604 01 48 00 3C120 00 31 15 26.5 104.4 -4.0 -50.8 7 1 3 5604 01 47 43 02 07 57 --- 00 51 15 30.3 108.0 -3.7 -49.5 1197 F 1 2493 02 08 16 J0423-0120 00 51 34 27.7 115.6 -3.5 -45.9 8 1 3 2493 02 07 57 02 11 16 =0420-014 00 54 34 28.3 116.2 -3.5 -45.6 180 F 1 3818 02 11 35 3C120 00 54 53 31.0 108.7 -3.6 -49.3 8 1 3 3818 02 11 16 02 31 32 --- 01 14 53 34.8 112.6 -3.3 -47.6 1197 F 1 11925 02 33 36 3C147 01 16 58 41.9 52.5 -4.4 -78.6 78 1 3 11925 02 33 16 02 36 35 --- 01 19 58 42.3 52.7 -4.4 -79.1 180 F 1 13255 02 38 35 3C120 01 21 58 36.0 114.1 -3.2 -46.9 73 1 4 13255 02 38 15 02 58 32 --- 01 41 58 39.6 118.5 -2.9 -44.7 1197 R 1 13833 02 58 51 J0423-0120 01 42 17 36.4 126.6 -2.7 -39.8 7 1 4 13833 02 58 32 03 01 51 =0420-014 01 45 17 36.8 127.3 -2.6 -39.3 180 R 1 12504 Schedule for VLBA_OV (Code Ov ) 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 31 Dec 2003 Day 365 --- 03 02 11 3C120 01 45 37 40.3 119.3 -2.8 -44.2 7 1 4 12504 03 01 51 03 22 07 --- 02 05 37 43.6 124.2 -2.5 -41.4 1197 R 1 4394 03 22 28 J0423-0120 02 05 57 40.0 132.5 -2.3 -35.9 7 1 4 4394 03 22 07 03 25 27 =0420-014 02 08 57 40.4 133.3 -2.2 -35.4 180 R 1 3063 03 25 47 3C120 02 09 18 44.2 125.2 -2.4 -40.8 7 1 5 3063 03 25 27 03 45 44 --- 02 29 18 47.4 130.7 -2.1 -37.3 1197 F 1 5049 03 47 40 3C147 02 31 14 53.8 54.0 -3.2 -91.7 59 1 5 5049 03 47 20 03 50 39 --- 02 34 14 54.2 54.0 -3.1 -92.3 180 F 1 6379 03 52 39 3C120 02 36 14 48.4 132.8 -2.0 -35.9 61 1 5 6379 03 52 19 04 12 36 --- 02 56 14 51.2 139.2 -1.6 -31.5 1197 F 1 14491 04 12 56 J0423-0120 02 56 34 46.5 147.5 -1.4 -25.4 5 1 5 14491 04 12 36 04 15 55 =0420-014 02 59 34 46.8 148.5 -1.4 -24.6 180 F 1 15823 04 16 16 3C120 02 59 54 51.6 140.5 -1.6 -30.6 5 1 6 15823 04 15 55 04 36 12 --- 03 19 54 54.0 147.7 -1.2 -25.3 1197 R 1 11264 04 36 33 J0423-0120 03 20 15 48.7 155.6 -1.1 -19.2 4 1 6 11264 04 36 12 04 39 32 =0420-014 03 23 15 49.0 156.7 -1.0 -18.4 180 R 1 9933 04 39 52 3C120 03 23 35 54.4 149.2 -1.2 -24.2 3 1 6 9933 04 39 32 04 59 49 --- 03 43 35 56.2 157.3 -0.8 -18.0 1197 R 1 1821 05 01 47 3C147 03 45 33 65.5 49.6 -2.0 -109.8 41 1 6 1821 05 01 27 05 04 47 --- 03 48 33 66.0 49.2 -1.9 -110.7 180 R 1 491 05 06 46 3C120 03 50 33 56.7 160.3 -0.7 -15.6 40 1 7 491 05 06 26 05 26 43 --- 04 10 33 57.7 169.3 -0.4 -8.5 1197 F 1 7621 05 27 04 J0423-0120 04 10 54 51.3 175.0 -0.2 -4.0 2 1 7 7621 05 26 43 05 30 03 =0420-014 04 13 54 51.4 176.2 -0.2 -3.1 180 F 1 8953 05 30 23 3C120 04 14 14 57.8 171.0 -0.3 -7.2 1 1 7 8953 05 30 03 05 50 20 --- 04 34 14 58.1 180.4 0.0 0.3 1197 F 1 17066 05 50 40 J0423-0120 04 34 35 51.3 184.4 0.2 3.5 1 1 8 17066 05 50 20 05 53 40 =0420-014 04 37 35 51.3 185.6 0.2 4.5 180 R 1 16802 Schedule for VLBA_OV (Code Ov ) 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 31 Dec 2003 Day 365 --- 05 54 00 3C120 04 37 55 58.1 182.1 0.1 1.7 1 1 8 16802 05 53 40 06 13 57 --- 04 57 55 57.6 191.5 0.4 9.1 1197 R 1 8689 06 15 52 3C147 04 59 50 75.2 28.1 -0.7 -144.4 0 1 8 8689 06 15 32 06 18 51 --- 05 02 50 75.5 26.6 -0.7 -146.5 180 R 1 7359 06 20 51 3C120 05 04 50 57.3 194.6 0.5 11.6 2 1 9 7359 06 20 31 06 40 48 --- 05 24 50 56.0 203.4 0.9 18.5 1197 F 1 753 06 41 08 J0423-0120 05 25 10 48.9 203.8 1.0 18.8 0 1 9 753 06 40 48 06 44 07 =0420-014 05 28 10 48.6 204.9 1.1 19.6 180 F 1 2085 06 44 28 3C120 05 28 31 55.7 204.9 0.9 19.7 0 1 9 2085 06 44 07 07 04 24 --- 05 48 31 53.8 212.9 1.3 25.7 1197 F 1 10198 07 04 45 J0423-0120 05 48 51 46.7 212.0 1.4 25.0 0 1 9 10198 07 04 24 07 07 44 =0420-014 05 51 51 46.3 213.0 1.5 25.7 180 F 1 11530 07 08 04 3C120 05 52 11 53.4 214.3 1.3 26.8 0 1 10 11530 07 07 44 07 28 01 --- 06 12 11 51.0 221.3 1.6 31.9 1197 R 1 15557 07 29 32 3C147 06 13 43 76.2 338.8 0.5 153.4 7 1 10 15557 07 29 12 07 32 32 --- 06 16 43 76.0 337.0 0.6 151.1 180 R 1 14227 07 39 39 3C120 06 23 51 49.4 225.1 1.8 34.5 346 1 10 14227 07 39 19 07 59 36 --- 06 43 51 46.4 231.1 2.2 38.5 1197 R 1 6115 07 59 56 J0423-0120 06 44 11 39.5 228.3 2.3 36.5 1 1 10 6115 07 59 36 08 02 55 =0420-014 06 47 11 39.1 229.1 2.4 37.0 180 R 1 4783 08 03 15 3C120 06 47 31 45.8 232.1 2.2 39.1 1 1 11 4783 08 02 55 08 23 12 --- 07 07 31 42.6 237.4 2.6 42.3 1197 F 1 3329 08 23 32 J0423-0120 07 07 52 35.9 234.2 2.7 40.2 1 1 11 3329 08 23 12 08 26 32 =0420-014 07 10 52 35.4 234.9 2.8 40.6 180 F 1 4660 08 26 52 3C120 07 11 12 42.0 238.3 2.6 42.9 1 1 11 4660 08 26 32 08 46 49 --- 07 31 12 38.5 243.0 3.0 45.4 1197 F 1 12772 08 48 45 3C147 07 33 08 66.6 311.4 1.8 112.1 54 1 11 12772 08 48 25 08 51 44 --- 07 36 08 66.1 310.9 1.9 111.1 180 F 1 14102 Schedule for VLBA_OV (Code Ov ) 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 31 Dec 2003 Day 365 --- 08 54 09 3C286 07 38 34 19.2 425.8 -5.9 -57.4 45 1 11 14102 08 53 49 08 57 09 --- 07 41 34 19.7 426.1 -5.8 -57.7 180 F 1 15432 08 59 23 3C120 07 43 48 36.2 245.7 3.2 46.8 7 1 12 15432 08 59 03 09 19 19 --- 08 03 48 32.6 249.8 3.5 48.6 1197 R 1 11657 09 19 39 J0423-0120 08 04 08 26.1 246.1 3.7 46.7 1 1 12 11657 09 19 19 09 22 39 =0420-014 08 07 08 25.6 246.6 3.7 47.0 180 R 1 10328 09 22 58 3C120 08 07 27 31.9 250.5 3.6 48.9 1 1 12 10328 09 22 39 09 42 55 --- 08 27 27 28.1 254.2 3.9 50.3 1197 R 1 2219 09 43 15 J0423-0120 08 27 47 21.8 250.4 4.1 48.6 1 1 12 2219 09 42 55 09 46 14 =0420-014 08 30 47 21.2 251.0 4.1 48.8 180 R 1 890 09 46 34 3C120 08 31 07 27.4 254.9 4.0 50.5 1 1 13 890 09 46 14 10 06 30 --- 08 51 07 23.5 258.3 4.3 51.5 1197 F 1 7218 10 07 53 3C147 08 52 30 54.1 306.0 3.2 92.1 16 1 13 7218 10 07 33 10 10 53 --- 08 55 30 53.6 306.0 3.2 91.6 180 F 1 8548 10 13 20 3C286 08 57 57 34.1 435.2 -4.6 -63.3 55 1 13 8548 10 13 00 10 16 19 --- 09 00 57 34.6 435.6 -4.5 -63.5 180 F 1 9878 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 28.413947 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.55820 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 24.272088 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.45329 * 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 55.680070 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 21.23733 * 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 18.490083 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.02909 * 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 138.8 3C120 144.8 3C147 151.1 3C286 91.3 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