COVER INFORMATION Station: VLBA_HN (Code Hn ) 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_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) ---------------------------------------------------------------------------------------- --- 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 01 54 32 51.0 59.3 -3.8 -77.6 0 1 1 0 00 06 04 00 09 24 --- 01 57 32 51.5 59.5 -3.8 -78.0 180 F 1 1330 00 11 24 3C120 01 59 32 39.4 126.8 -2.6 -36.1 69 1 1 1330 00 11 04 00 31 20 --- 02 19 32 42.2 132.2 -2.2 -33.0 1197 F 1 9442 00 31 36 J0423-0120 02 19 47 37.7 139.5 -2.1 -28.4 1 1 1 9442 00 31 20 00 34 35 =0420-014 02 22 47 38.1 140.3 -2.0 -27.9 180 F 1 10742 00 34 51 3C120 02 23 03 42.7 133.2 -2.2 -32.4 0 1 2 10742 00 34 35 00 54 48 --- 02 43 03 45.2 139.1 -1.8 -28.8 1197 R 1 16376 00 55 05 J0423-0120 02 43 20 40.3 146.3 -1.7 -24.0 1 1 2 16376 00 54 48 00 58 04 =0420-014 02 46 20 40.6 147.2 -1.6 -23.4 180 R 1 15067 00 58 21 3C120 02 46 37 45.6 140.2 -1.8 -28.1 1 1 2 15067 00 58 04 01 18 18 --- 03 06 37 47.8 146.8 -1.4 -23.8 1197 R 1 6977 01 19 30 3C147 03 07 49 62.7 61.7 -2.6 -89.6 9 1 2 6977 01 19 10 01 22 29 --- 03 10 49 63.2 61.7 -2.5 -90.2 180 R 1 5647 01 24 29 3C120 03 12 49 48.4 148.9 -1.3 -22.3 56 1 3 5647 01 24 09 01 44 25 --- 03 32 49 50.1 156.1 -1.0 -17.4 1197 F 1 2465 01 44 43 J0423-0120 03 33 07 44.3 162.3 -0.8 -12.9 0 1 3 2465 01 44 25 01 47 43 =0420-014 03 36 07 44.5 163.3 -0.8 -12.2 180 F 1 3779 01 48 00 3C120 03 36 24 50.4 157.4 -0.9 -16.4 0 1 3 3779 01 47 43 02 07 57 --- 03 56 24 51.5 165.1 -0.6 -10.9 1197 F 1 11876 02 08 16 J0423-0120 03 56 44 45.3 170.5 -0.4 -7.0 1 1 3 11876 02 07 57 02 11 16 =0420-014 03 59 44 45.4 171.5 -0.4 -6.2 180 F 1 13200 02 11 35 3C120 04 00 03 51.7 166.5 -0.6 -9.9 1 1 4 13200 02 11 16 02 31 32 --- 04 20 03 52.3 174.6 -0.2 -4.0 1197 R 1 13892 02 33 36 3C147 04 22 07 74.5 56.5 -1.3 -108.8 39 1 4 13892 02 33 16 02 36 35 --- 04 25 07 75.0 55.9 -1.3 -110.0 180 R 1 12562 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) ---------------------------------------------------------------------------------------- --- Wed 31 Dec 2003 Day 365 --- 02 38 35 3C120 04 27 07 52.4 177.4 -0.1 -1.9 33 1 4 12562 02 38 15 02 58 32 --- 04 47 07 52.3 185.6 0.2 4.1 1197 R 1 4450 02 58 51 J0423-0120 04 47 27 45.4 188.6 0.4 6.3 0 1 4 4450 02 58 32 03 01 51 =0420-014 04 50 27 45.3 189.6 0.4 7.0 180 R 1 3122 03 02 11 3C120 04 50 47 52.2 187.1 0.3 5.2 0 1 5 3122 03 01 51 03 22 07 --- 05 10 47 51.5 195.1 0.6 11.0 1197 F 1 4989 03 22 28 J0423-0120 05 11 07 44.5 196.8 0.8 12.2 0 1 5 4989 03 22 07 03 25 27 =0420-014 05 14 07 44.3 197.8 0.8 13.0 180 F 1 6320 03 25 47 3C120 05 14 27 51.3 196.5 0.7 12.1 0 1 5 6320 03 25 27 03 45 44 --- 05 34 27 50.1 204.1 1.0 17.5 1197 F 1 14432 03 47 40 3C147 05 36 23 83.0 368.7 -0.1 -170.2 0 1 5 14432 03 47 20 03 50 39 --- 05 39 23 83.1 364.7 -0.1 -174.6 180 F 1 15762 03 52 39 3C120 05 41 23 49.5 206.6 1.1 19.3 8 1 6 15762 03 52 19 04 12 36 --- 06 01 23 47.7 213.6 1.5 24.0 1197 R 1 11326 04 12 56 J0423-0120 06 01 44 40.5 213.1 1.6 23.6 0 1 6 11326 04 12 36 04 15 55 =0420-014 06 04 44 40.2 214.0 1.7 24.2 180 R 1 9994 04 16 16 3C120 06 05 04 47.3 214.9 1.5 24.9 0 1 6 9994 04 15 55 04 36 12 --- 06 25 04 45.1 221.3 1.9 29.0 1197 R 1 1882 04 36 33 J0423-0120 06 25 24 37.9 220.0 2.0 28.1 0 1 6 1882 04 36 12 04 39 32 =0420-014 06 28 24 37.6 220.9 2.1 28.6 180 R 1 550 04 39 52 3C120 06 28 44 44.6 222.4 1.9 29.7 0 1 7 550 04 39 32 04 59 49 --- 06 48 44 42.0 228.2 2.3 33.3 1197 F 1 7562 05 01 47 3C147 06 50 43 76.5 306.6 1.1 114.3 44 1 7 7562 05 01 27 05 04 47 --- 06 53 43 76.0 305.8 1.2 112.9 180 F 1 8892 05 06 46 3C120 06 55 43 41.0 230.2 2.4 34.4 44 1 7 8892 05 06 26 05 26 43 --- 07 15 43 38.1 235.4 2.7 37.3 1197 F 1 17004 05 27 04 J0423-0120 07 16 04 31.2 233.1 2.9 35.8 1 1 8 17004 05 26 43 05 30 03 =0420-014 07 19 04 30.8 233.8 2.9 36.2 180 R 1 16864 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) ---------------------------------------------------------------------------------------- --- Wed 31 Dec 2003 Day 365 --- 05 30 23 3C120 07 19 24 37.6 236.3 2.8 37.7 1 1 8 16864 05 30 03 05 50 20 --- 07 39 24 34.4 241.1 3.1 40.1 1197 R 1 8751 05 50 40 J0423-0120 07 39 44 27.6 238.5 3.3 38.6 1 1 8 8751 05 50 20 05 53 40 =0420-014 07 42 44 27.2 239.1 3.3 39.0 180 R 1 7419 05 54 00 3C120 07 43 05 33.8 242.0 3.2 40.5 1 1 9 7419 05 53 40 06 13 57 --- 08 03 05 30.5 246.4 3.5 42.4 1197 F 1 694 06 15 52 3C147 08 05 00 64.8 298.4 2.4 92.2 40 1 9 694 06 15 32 06 18 51 --- 08 08 00 64.3 298.3 2.4 91.6 180 F 1 2024 06 20 51 3C120 08 10 00 29.4 247.8 3.6 42.9 44 1 9 2024 06 20 31 06 40 48 --- 08 30 00 25.9 251.9 3.9 44.3 1197 F 1 10136 06 41 08 J0423-0120 08 30 20 19.3 248.9 4.1 43.1 1 1 9 10136 06 40 48 06 44 07 =0420-014 08 33 20 18.8 249.5 4.2 43.3 180 F 1 11468 06 44 28 3C120 08 33 40 25.3 252.6 4.0 44.6 1 1 10 11468 06 44 07 07 04 24 --- 08 53 40 21.8 256.5 4.3 45.6 1197 R 1 15619 07 04 45 J0423-0120 08 54 01 15.2 253.4 4.5 44.6 1 1 10 15619 07 04 24 07 07 44 =0420-014 08 57 01 14.7 253.9 4.6 44.7 180 R 1 14287 07 08 04 3C120 08 57 21 21.1 257.1 4.4 45.8 1 1 10 14287 07 07 44 07 28 01 --- 09 17 21 17.5 260.8 4.7 46.5 1197 R 1 6174 07 29 32 3C147 09 18 53 53.0 300.0 3.6 79.5 15 1 10 6174 07 29 12 07 32 32 --- 09 21 53 52.5 300.2 3.6 79.0 180 R 1 4844 07 34 31 3C286 09 23 52 40.0 442.9 -4.1 -57.5 18 1 10 4844 07 34 11 07 37 31 --- 09 26 52 40.6 443.4 -4.1 -57.6 180 R 1 3514 08 48 45 3C147 10 38 18 40.7 305.2 4.9 68.1 4176 1 10 3514 08 48 25 08 51 44 --- 10 41 18 40.2 305.5 5.0 67.6 180 R 1 2184 08 54 09 3C286 10 43 43 54.6 96.5 -2.8 -57.6 0 1 10 2184 08 53 49 08 57 09 --- 10 46 43 55.2 97.1 -2.7 -57.5 180 R 1 854 10 07 53 3C147 11 57 40 29.4 -47.6 6.2 57.0 4142 1 11 854 10 07 33 10 10 53 --- 12 00 40 29.0 -47.3 6.3 56.5 180 F 1 476 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) ---------------------------------------------------------------------------------------- --- Wed 31 Dec 2003 Day 365 --- 10 13 20 3C286 12 03 07 68.5 118.1 -1.5 -48.6 31 1 11 476 10 13 00 10 16 19 --- 12 06 07 69.0 119.3 -1.4 -47.8 180 F 1 1806 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