COVER INFORMATION Station: VLBA_HN (Code Hn ) 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_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 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 01 34 32 47.9 58.1 -4.1 -74.7 0 1 1 0 01 44 05 01 47 25 --- 01 37 32 48.3 58.3 -4.1 -75.1 180 F 1 1330 01 49 24 3C120 01 39 32 36.3 121.7 -2.9 -38.7 71 1 1 1330 01 49 04 02 09 21 --- 01 59 32 39.4 126.8 -2.6 -36.1 1197 F 1 9442 02 09 35 J0423-0120 01 59 46 35.2 134.1 -2.4 -31.7 0 1 1 9442 02 09 21 02 12 35 =0420-014 02 02 46 35.6 134.9 -2.3 -31.3 180 F 1 10735 02 12 50 3C120 02 03 01 39.9 127.7 -2.5 -35.6 0 1 2 10735 02 12 35 02 32 46 --- 02 23 01 42.7 133.2 -2.2 -32.4 1197 R 1 16389 02 33 02 J0423-0120 02 23 17 38.2 140.5 -2.0 -27.8 1 1 2 16389 02 32 46 02 36 02 =0420-014 02 26 17 38.5 141.3 -2.0 -27.2 180 R 1 15087 02 36 17 3C120 02 26 33 43.1 134.2 -2.1 -31.8 1 1 2 15087 02 36 02 02 56 14 --- 02 46 33 45.6 140.2 -1.8 -28.1 1197 R 1 7004 02 57 18 3C147 02 47 37 59.5 61.5 -2.9 -86.0 6 1 2 7004 02 56 58 03 00 18 --- 02 50 37 59.9 61.5 -2.9 -86.5 180 R 1 5674 03 02 17 3C120 02 52 37 46.3 142.1 -1.7 -26.8 60 1 3 5674 03 01 57 03 22 14 --- 03 12 37 48.4 148.8 -1.3 -22.4 1197 F 1 2438 03 22 32 J0423-0120 03 12 55 43.0 155.5 -1.2 -17.7 1 1 3 2438 03 22 14 03 25 32 =0420-014 03 15 55 43.2 156.5 -1.1 -17.0 180 F 1 3754 03 25 49 3C120 03 16 13 48.7 150.1 -1.3 -21.5 1 1 3 3754 03 25 32 03 45 46 --- 03 36 13 50.4 157.3 -1.0 -16.5 1197 F 1 11850 03 46 04 J0423-0120 03 36 30 44.5 163.4 -0.8 -12.1 0 1 3 11850 03 45 46 03 49 03 =0420-014 03 39 30 44.6 164.5 -0.7 -11.3 180 F 1 13165 03 49 21 3C120 03 39 48 50.6 158.7 -0.9 -15.5 0 1 4 13165 03 49 03 04 09 18 --- 03 59 48 51.7 166.4 -0.6 -9.9 1197 R 1 13937 04 11 07 3C147 04 01 38 71.3 59.5 -1.7 -102.0 32 1 4 13937 04 10 47 04 14 07 --- 04 04 38 71.8 59.1 -1.6 -102.9 180 R 1 12607 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 1 Dec 2003 Day 335 --- 04 16 07 3C120 04 06 38 52.0 169.1 -0.4 -8.0 40 1 4 12607 04 15 47 04 36 03 --- 04 26 38 52.4 177.2 -0.1 -2.0 1197 R 1 4495 04 36 24 J0423-0120 04 26 59 45.7 181.3 0.1 0.9 1 1 4 4495 04 36 03 04 39 23 =0420-014 04 29 59 45.7 182.3 0.1 1.7 180 R 1 3163 04 39 43 3C120 04 30 19 52.4 178.7 -0.1 -0.9 1 1 5 3163 04 39 23 04 59 40 --- 04 50 19 52.2 186.9 0.3 5.1 1197 F 1 4949 05 00 00 J0423-0120 04 50 39 45.3 189.7 0.5 7.1 0 1 5 4949 04 59 40 05 02 59 =0420-014 04 53 39 45.2 190.7 0.5 7.8 180 F 1 6278 05 03 19 3C120 04 53 59 52.2 188.4 0.3 6.1 0 1 5 6278 05 02 59 05 23 16 --- 05 13 59 51.4 196.3 0.7 11.9 1197 F 1 14389 05 25 12 3C147 05 15 55 81.7 31.5 -0.5 -143.6 0 1 5 14389 05 24 52 05 28 11 --- 05 18 55 81.9 28.7 -0.4 -146.9 180 F 1 15719 05 30 11 3C120 05 20 55 51.0 199.0 0.8 13.9 0 1 6 15719 05 29 51 05 50 08 --- 05 40 55 49.6 206.5 1.1 19.1 1197 R 1 11369 05 50 28 J0423-0120 05 41 15 42.4 206.8 1.3 19.3 0 1 6 11369 05 50 08 05 53 28 =0420-014 05 44 15 42.2 207.7 1.3 19.9 180 R 1 10037 05 53 48 3C120 05 44 36 49.3 207.8 1.2 20.1 0 1 6 10037 05 53 28 06 13 44 --- 06 04 36 47.4 214.7 1.5 24.8 1197 R 1 1924 06 14 05 J0423-0120 06 04 56 40.2 214.1 1.7 24.2 0 1 6 1924 06 13 44 06 17 04 =0420-014 06 07 56 39.9 215.0 1.7 24.8 180 R 1 592 06 17 24 3C120 06 08 16 47.0 215.9 1.6 25.6 0 1 7 592 06 17 04 06 37 21 --- 06 28 16 44.7 222.3 1.9 29.6 1197 F 1 7521 06 39 17 3C147 06 30 12 79.3 314.5 0.8 125.9 40 1 7 7521 06 38 57 06 42 16 --- 06 33 12 78.9 313.0 0.8 123.9 180 F 1 8851 06 44 16 3C120 06 35 12 43.8 224.3 2.0 30.9 43 1 7 8851 06 43 56 07 04 12 --- 06 55 12 41.1 230.0 2.4 34.3 1197 F 1 16962 07 04 33 J0423-0120 06 55 32 34.1 228.0 2.5 33.0 0 1 8 16962 07 04 12 07 07 32 =0420-014 06 58 32 33.7 228.8 2.6 33.4 180 R 1 16906 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 1 Dec 2003 Day 335 --- 07 07 52 3C120 06 58 52 40.6 231.0 2.4 34.9 0 1 8 16906 07 07 32 07 27 49 --- 07 18 52 37.6 236.2 2.8 37.7 1197 R 1 8793 07 28 10 J0423-0120 07 19 13 30.7 233.8 2.9 36.2 1 1 8 8793 07 27 49 07 31 09 =0420-014 07 22 13 30.3 234.5 3.0 36.6 180 R 1 7460 07 31 29 3C120 07 22 33 37.1 237.1 2.8 38.1 1 1 9 7460 07 31 09 07 51 26 --- 07 42 33 33.9 241.8 3.2 40.4 1197 F 1 653 07 53 31 3C147 07 44 38 68.1 299.0 2.0 96.7 51 1 9 653 07 53 11 07 56 30 --- 07 47 38 67.6 298.9 2.1 96.0 180 F 1 1983 07 58 39 3C120 07 49 47 32.8 243.5 3.3 41.1 53 1 9 1983 07 58 19 08 18 35 --- 08 09 47 29.4 247.8 3.6 42.9 1197 F 1 10094 08 18 56 J0423-0120 08 10 07 22.7 244.9 3.8 41.5 1 1 9 10094 08 18 35 08 21 55 =0420-014 08 13 07 22.2 245.5 3.8 41.8 180 F 1 11426 08 22 15 3C120 08 13 28 28.8 248.6 3.7 43.2 1 1 10 11426 08 21 55 08 42 12 --- 08 33 28 25.3 252.6 4.0 44.6 1197 R 1 15661 08 42 32 J0423-0120 08 33 48 18.7 249.6 4.2 43.3 1 1 10 15661 08 42 12 08 45 32 =0420-014 08 36 48 18.2 250.1 4.2 43.5 180 R 1 14329 08 45 52 3C120 08 37 08 24.7 253.3 4.1 44.8 1 1 10 14329 08 45 32 09 05 49 --- 08 57 08 21.2 257.1 4.4 45.8 1197 R 1 6216 09 07 27 3C147 08 58 47 56.2 299.2 3.3 82.6 22 1 10 6216 09 07 07 09 10 26 --- 09 01 47 55.7 299.3 3.3 82.1 180 R 1 4886 09 12 26 3C120 09 03 47 20.0 258.3 4.5 46.1 42 1 11 4886 09 12 06 09 32 23 --- 09 23 47 16.4 261.9 4.8 46.7 1197 F 1 3225 09 36 03 3C120 09 27 27 15.7 262.6 4.9 46.8 213 1 11 3225 09 35 43 09 56 00 --- 09 47 27 12.1 266.1 5.2 47.2 1197 F 1 11337 10 21 32 3C147 10 13 04 44.5 303.3 4.5 71.6 1462 1 11 11337 10 21 12 10 24 32 --- 10 16 04 44.1 303.5 4.6 71.2 180 F 1 12667 10 26 59 3C286 10 18 31 50.0 91.8 -3.2 -58.1 0 1 11 12667 10 26 39 10 29 58 --- 10 21 31 50.6 92.3 -3.2 -58.1 180 F 1 13997 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 1 Dec 2003 Day 335 --- 11 40 46 3C147 11 32 31 32.8 -50.0 5.8 60.5 4147 1 11 13997 11 40 26 11 43 46 --- 11 35 31 32.4 -49.8 5.9 60.1 180 F 1 15327 11 46 15 3C286 11 38 00 64.3 109.6 -1.9 -53.2 36 1 11 15327 11 45 55 11 49 14 --- 11 41 00 64.8 110.5 -1.8 -52.7 180 F 1 16657 12 32 47 3C147 12 24 40 25.8 -44.8 6.7 53.1 2503 1 12 16657 12 32 27 12 35 46 --- 12 27 40 25.4 -44.4 6.7 52.7 180 R 1 17213 12 37 49 3C286 12 29 43 72.5 130.4 -1.0 -40.3 0 1 12 17213 12 37 29 12 40 48 --- 12 32 43 72.9 132.0 -1.0 -39.1 180 R 1 15883 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