COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: 43 GHz polarimetry of NGC4261 Exp. Code: BM215a Schedule Version: 1.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Enno Middelberg Address: Australia Telescope National Facility PO Box 76 Epping NSW 1710 Australia Phone: +61 2 9372 4100 EMAIL: enno.middelberg@csiro.au Fax: +61 2 9372 4310 Phone during observation: +61 2 9418 6968 Observing mode: 7 mm Notes: Schedule for VLBA_LA (Code La ) Page 2 43 GHz polarimetry of NGC4261 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 20 Dec 2004 Day 355 --- Next scan frequencies: 43201.49 43201.49 43209.49 43209.49 43217.49 43217.49 43225.49 43225.49 Next BBC frequencies: 801.49 801.49 809.49 809.49 817.49 817.49 825.49 825.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 09 35 14 J0927+3902 08 27 30 77.7 70.3 -1.0 -100.6 0 1 1 0 09 35 14 09 40 13 --- 08 32 30 78.6 69.3 -0.9 -102.3 299 F 1 3989 09 42 07 J1146+3958 08 34 24 52.2 68.8 -3.2 -80.5 55 1 1 3989 09 42 07 09 47 06 --- 08 39 24 53.1 69.0 -3.1 -81.1 299 F 1 7978 09 47 31 J1159+2914 08 39 49 47.8 84.2 -3.3 -67.6 9 1 1 7978 09 47 31 09 52 30 --- 08 44 49 48.8 84.8 -3.2 -67.8 299 F 1 11967 09 52 30 NGC4261 08 44 49 32.5 108.1 -3.6 -50.8 -39 1 3 11967 09 52 30 10 35 23 --- 09 27 49 40.5 116.9 -2.9 -46.7 2534 F 1 11073 10 37 11 J0927+3902 09 29 37 86.7 -7.6 0.0 172.0 9 1 3 11073 10 37 11 10 42 10 --- 09 34 37 86.5 -23.4 0.1 155.5 299 F 1 15062 10 44 10 J1146+3958 09 36 37 64.0 70.9 -2.2 -88.7 51 1 4 15062 10 44 10 10 49 09 --- 09 41 37 65.0 70.9 -2.1 -89.5 299 R 1 16149 10 49 40 J1159+2914 09 42 08 60.4 92.9 -2.3 -68.2 10 1 4 16149 10 49 40 10 54 39 --- 09 47 08 61.4 93.7 -2.2 -68.1 299 R 1 12159 10 54 39 NGC4261 09 47 08 44.0 121.4 -2.5 -44.1 -41 1 6 12159 10 54 39 11 37 32 --- 10 30 08 50.9 133.5 -1.8 -36.2 2532 R 1 13053 11 39 37 J0927+3902 10 32 14 76.7 289.0 1.1 99.1 15 1 6 13053 11 39 37 11 44 36 --- 10 37 14 75.8 288.4 1.2 97.7 299 R 1 9064 11 46 16 J1146+3958 10 38 53 75.9 427.7 -1.1 -101.8 0 1 6 9064 11 46 16 11 51 15 --- 10 43 53 76.8 426.8 -1.1 -103.5 299 R 1 5075 11 55 05 J1159+2914 10 47 43 73.5 108.3 -1.2 -62.0 11 1 6 5075 11 55 05 12 00 04 --- 10 52 43 74.4 110.2 -1.1 -60.7 299 R 1 1086 12 00 04 NGC4261 10 52 43 54.0 141.2 -1.4 -30.7 -47 1 8 1086 12 00 04 12 42 57 --- 11 35 43 58.4 158.8 -0.7 -17.1 2526 R 1 1980 Schedule for VLBA_LA (Code La ) Page 3 43 GHz polarimetry of NGC4261 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 20 Dec 2004 Day 355 --- 12 44 42 J0927+3902 11 37 29 64.1 287.0 2.2 86.9 14 1 9 1980 12 44 42 12 49 41 --- 11 42 29 63.1 287.1 2.3 86.2 299 F 1 2009 12 51 26 J1146+3958 11 44 14 85.8 367.8 0.0 -171.7 45 1 9 2009 12 51 26 12 56 25 --- 11 49 14 85.8 354.7 0.0 174.4 299 F 1 5998 12 59 57 J1159+2914 11 52 47 83.3 166.8 -0.1 -12.2 81 1 9 5998 12 59 57 13 04 56 --- 11 57 47 83.4 176.2 0.0 -3.6 299 F 1 9987 13 04 56 NGC4261 11 57 47 59.6 169.2 -0.4 -8.8 -54 1 11 9987 13 04 56 13 47 49 --- 12 40 47 59.6 190.4 0.4 8.5 2519 F 1 9093 13 49 14 J0927+3902 12 42 11 51.6 289.9 3.2 79.1 12 1 11 9093 13 49 14 13 54 13 --- 12 47 11 50.7 290.2 3.3 78.6 299 F 1 13082 13 55 12 J1146+3958 12 48 11 77.3 293.7 1.0 104.3 0 1 11 13082 13 55 12 14 00 11 --- 12 53 11 76.4 292.7 1.1 102.6 299 F 1 17071 14 01 37 J1159+2914 12 54 36 76.7 244.3 0.9 56.9 47 1 12 17071 14 01 37 14 06 36 --- 12 59 36 75.8 246.7 1.0 58.6 299 R 1 14140 14 06 36 NGC4261 12 59 36 58.6 199.4 0.7 15.7 -40 1 14 14140 14 06 36 14 49 29 --- 13 42 36 54.5 217.3 1.4 29.6 2533 R 1 15033 14 51 11 J0927+3902 13 44 18 39.9 294.1 4.3 72.4 45 1 14 15033 14 51 11 14 56 10 --- 13 49 18 39.0 294.5 4.4 71.8 299 R 1 11044 14 57 09 J1146+3958 13 50 18 65.5 289.1 2.1 89.9 0 1 14 11044 14 57 09 15 02 08 --- 13 55 18 64.5 289.1 2.1 89.1 299 R 1 7055 15 02 41 J1159+2914 13 55 51 64.8 263.2 1.9 67.4 10 1 14 7055 15 02 41 15 07 40 --- 14 00 51 63.8 264.2 2.0 67.6 299 R 1 3066 ----------- Tape Change ------------ 15 07 40 NGC4261 14 00 51 52.1 223.8 1.7 34.3 -33 2 2 3066 15 07 40 15 50 33 --- 14 43 51 45.4 236.5 2.4 42.8 2540 R 1 3960 15 52 37 J0927+3902 14 45 55 28.8 299.3 5.3 65.6 76 2 3 3960 15 52 37 15 57 37 --- 14 50 55 27.9 299.8 5.4 65.0 299 F 1 29 15 58 36 J1146+3958 14 51 54 53.7 290.8 3.1 81.5 1 2 3 29 15 58 36 16 03 35 --- 14 56 54 52.8 291.1 3.2 80.9 299 F 1 4018 Schedule for VLBA_LA (Code La ) Page 4 43 GHz polarimetry of NGC4261 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 20 Dec 2004 Day 355 --- 16 04 00 J1159+2914 14 57 20 52.3 272.9 3.0 68.2 8 2 3 4018 16 04 00 16 09 00 --- 15 02 20 51.3 273.6 3.0 68.1 299 F 1 8007 16 09 00 NGC4261 15 02 20 42.2 241.0 2.7 45.5 -28 2 5 8007 16 09 00 16 51 52 --- 15 45 20 34.2 250.2 3.4 50.1 2545 F 1 7113 16 53 17 J0927+3902 15 46 44 18.4 305.3 6.3 58.4 41 2 5 7113 16 53 17 16 58 16 --- 15 51 44 17.5 305.9 6.4 57.8 299 F 1 11102 16 59 13 J1146+3958 15 52 42 42.3 294.5 4.1 74.4 2 2 5 11102 16 59 13 17 04 13 --- 15 57 42 41.4 294.8 4.2 73.9 299 F 1 15091 17 04 38 J1159+2914 15 58 08 40.1 280.4 4.0 66.1 10 2 6 15091 17 04 38 17 09 37 --- 16 03 08 39.1 280.9 4.1 65.9 299 R 1 16120 17 09 37 NGC4261 16 03 08 30.8 253.5 3.7 51.4 -24 2 7 16120 17 09 37 17 33 34 --- 16 27 08 26.1 257.6 4.1 52.8 1412 F 1 3028 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/filehost/cwalker/sched/setups/v7mm-256-8-2.set Matches group v7mm_c8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 42400.00 42400.00 42400.00 42400.00 42400.00 42400.00 42400.00 42400.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = A C A C A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.6 11.6 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 43201.49 43201.49 43209.49 43209.49 43217.49 43217.49 43225.49 43225.49 BBC fr= 801.49 801.49 809.49 809.49 817.49 817.49 825.49 825.49 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- 43 GHz polarimetry of NGC4261 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). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) (B1950) (J2000) (Date) * NGC4261 12 16 50.009407 * 12 19 23.221000 12 19 37.849326 06 06 08.73415 * 05 49 29.79500 05 47 51.24002 From catalog imbedded in main SCHED input file. Posn ref: 43 GHz map center in 2000ApJ...534..165J 5.402 scan hours, 218.990 baseline hours above horizon. * J0927+3902 09 23 55.319195 * 09 27 03.013916 09 27 22.408370 39 15 23.56655 * 39 02 20.85195 39 00 59.50655 From catalog imbedded in main SCHED input file. Polarization calibrator and fringe finder 0.665 scan hours, 27.009 baseline hours above horizon. * J1146+3958 11 44 21.020897 * 11 46 58.297909 11 47 13.867863 40 15 14.23970 * 39 58 34.30461 39 56 45.32051 From catalog imbedded in main SCHED input file. Polarization calibrator 0.665 scan hours, 29.170 baseline hours above horizon. * J1159+2914 11 56 57.786211 * 11 59 31.833912 11 59 46.871325 29 31 25.73884 * 29 14 43.82694 29 12 57.48804 From catalog imbedded in main SCHED input file. Polarization calibrator 0.665 scan hours, 28.422 baseline hours above horizon. 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) NGC4261 86.9 J0927+3902 132.9 J1146+3958 106.3 J1159+2914 100.4 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