COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: Mark5 pass thru test Exp. Code: tf028l Schedule Version: 1.00 Processed by SCHED version: Trial release of 30 July 2004 PI: Walter Brisken Address: National Radio Astronomy Observatory P. O. Box O Socorro, New Mexico, 87801 U.S.A. Phone: 505 835 7133 EMAIL: wbrisken@nrao.edu Fax: 505 835 7027 Phone during observation: 505 772 2580 Observing mode: Notes: No correlation needed. 5 stations tape only Schedule for VLBA_FD (Code Fd ) Page 2 Mark5 pass thru 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) ---------------------------------------------------------------------------------------- --- Thu 26 Aug 2004 Day 239 --- Next scan frequencies: 1409.99 1409.99 1503.99 1503.99 1589.99 1589.99 1679.99 1679.99 Next BBC frequencies: 990.01 990.01 896.01 896.01 810.01 810.01 720.01 720.01 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 20 35 00 J2327+8012 12 00 56 21.0 1.5-11.4 -7.7 0 1 1 0 20 34 50 20 38 00 =2325+799 12 03 56 21.0 1.7-11.4 -8.4 180 F 1 2533 20 40 00 J0017+8135 12 05 57 22.3 -0.5 11.8 2.7 111 1 1 2533 20 39 50 20 43 00 =0014+813 12 08 57 22.2 -0.3 11.9 2.0 180 F 1 5067 20 45 00 J2327+8012 12 10 58 21.0 2.0-11.3 -10.0 112 1 1 5067 20 44 50 20 48 00 =2325+799 12 13 58 21.1 2.1-11.2 -10.7 180 F 1 7600 20 50 00 J0017+8135 12 15 58 22.2 -0.1 12.0 0.4 112 1 1 7600 20 49 50 20 53 00 =0014+813 12 18 59 22.2 0.1-12.0 -0.3 180 F 1 10133 20 55 00 J2327+8012 12 20 59 21.1 2.4-11.1 -12.4 112 1 1 10133 20 54 50 20 58 00 =2325+799 12 24 00 21.1 2.6-11.1 -13.1 180 F 1 12667 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: mk5.20.256 Matches group v20cm_2 in /users/cwalker/sched_2004aug04/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. 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= 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: 1 Setup file default. Used pcal sets: 1 LO sum= 1409.99 1409.99 1503.99 1503.99 1589.99 1589.99 1679.99 1679.99 BBC fr= 990.01 990.01 896.01 896.01 810.01 810.01 720.01 720.01 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= 10 10 10 10 6010 6010 6010 6010 PCALFR2= 10 10 10 10 6010 6010 6010 6010 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- Mark5 pass thru 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). 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) * J0017+8135 00 14 04.461908 * 00 17 08.474953 00 17 29.179846 0014+813 81 18 28.65797 * 81 35 08.13633 81 36 29.54128 J0017+81 /users/cwalker/sched_2004aug04/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.100 scan hours, 1.000 baseline hours above horizon. * J2327+8012 23 25 28.589042 * 23 27 06.422700 23 27 19.301678 2325+799 79 56 27.90495 * 80 12 58.90700 80 14 21.84793 /users/cwalker/sched_2004aug04/catalogs/sources.vlba JVAS - Wilkinson et al. 1998, mnras, 300, 790; S8.4GHz= 148 mJy 0.150 scan hours, 1.500 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) J0017+8135 87.3 J2327+8012 89.3 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