COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: TESTS.SOFTWARE.CORRELATOR.SPECTRA.W75N.4STOKES Exp. Code: TC013A Schedule Version: 1.00 Processed by SCHED version: 6.05 June 2006 PI: Miller Goss Address: NRAO-Socorro 1003 Lopezville Rd. Socorro, NM 87801 Phone: (575) 835-7267 EMAIL: mgoss@nrao.edu Fax: (575) 835-7027 Phone during observation: Observing mode: 1612,1665,1665,1720 4 Stokes Notes: Dynamic scheduling, so make sure DAY is set correctly. Spectral line -- make sure PCALs are off Schedule for VLBA_LA (Code La ) Page 2 TESTS.SOFTWARE.CORRELATOR.SPECTRA.W75N.4STOKES 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. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. 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) SYNC ---------------------------------------------------------------------------------------- --- Fri 22 Feb 2008 Day 53 --- Next scan frequencies: 1612.23 1612.23 1720.51 1720.51 1667.33 1667.33 1665.40 1665.40 Next BBC frequencies: 787.77 787.77 679.49 679.49 732.67 732.67 734.60 734.60 Next scan bandwidths: 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 14 34 57 3C345 17 37 30 78.6 -65.4 0.9 106.3 0 1 1 0 14 33 37 14 49 54 --- 17 52 30 75.8 -68.4 1.2 100.9 898 F 1 4 14 34 12 14 51 52 W75N 17 54 28 57.8 65.0 -2.7 -88.3 23 1 1 4 14 49 54 15 21 47 --- 18 24 28 63.3 64.8 -2.2 -93.6 1795 F 1 12 14 49 54 15 23 40 3C345 18 26 21 69.3 -71.1 1.7 93.0 16 1 1 12 15 21 47 15 29 39 --- 18 32 21 68.2 -71.2 1.8 91.9 359 F 1 14 15 21 47 15 31 31 W75N 18 34 13 65.1 64.5 -2.1 -95.5 16 1 1 14 15 29 39 16 01 27 --- 19 04 13 70.5 62.2 -1.6 -102.7 1795 F 1 21 15 29 39 16 03 21 3C345 19 06 08 61.7 -71.0 2.4 86.7 20 1 1 21 16 01 27 16 09 20 --- 19 12 08 60.5 -70.8 2.5 85.8 359 F 1 23 16 01 27 16 09 24 3C345 19 12 13 60.5 -70.8 2.5 85.8 0 1 1 23 16 09 20 16 15 23 --- 19 18 13 59.4 -70.7 2.6 85.0 359 F 1 25 16 09 20 16 17 19 W75N 19 20 08 73.3 59.7 -1.3 -107.8 22 1 1 25 16 15 23 16 37 15 --- 19 40 08 76.7 54.3 -1.0 -116.3 1197 F 1 30 16 15 23 16 39 12 3C345 19 42 05 54.8 -69.7 3.0 82.0 28 1 1 30 16 37 15 16 45 11 --- 19 48 05 53.7 -69.4 3.1 81.3 359 F 1 32 16 37 15 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: oh1612.18cm Matches group v20cm_2 in /home/arana/cwalker/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 5 Station: VLBA_LA Total bit rate: 32 Format: VLBA1:1 Bits per sample: 2 Sample rate: 2.000 Number of channels: 8 Speedup factor: 4.00 Disk used to record data. 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 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= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 5 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 1612.23 1612.23 1720.51 1720.51 1667.33 1667.33 1665.40 1665.40 BBC fr= 787.77 787.77 679.49 679.49 732.67 732.67 734.60 734.60 Bandwd= 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 6, 10, 14, 18, 22, 26, 30 barrel=roll_off SOURCE LIST -- TESTS.SOFTWARE.CORRELATOR.SPECTRA.W75N.4STOKES 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) Error (B1950) (J2000) (Date) (mas) * W75N 20 36 49.997296 * 20 38 36.441000 20 38 52.245606 0.00 42 26 59.08576 * 42 37 35.49000 42 39 06.01224 0.00 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 6.00 6.00 10.00 10.00 10.00 10.00 6.00 6.00 1.330 scan hours, 59.836 baseline hours above horizon. J1642+3948 16 41 17.606231 * 16 42 58.809968 16 43 15.555012 0.26 1641+399 39 54 10.81494 * 39 48 36.99400 39 47 16.36531 0.40 * 3C345 /home/arana/cwalker/sched/catalogs/sources.vlba J1642+39 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro Doppler based on other sources. 0.648 scan hours, 29.170 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) W75N 57.9 3C345 92.4 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