COVER INFORMATION Station: ARECIBO (Code Ar ) Experiment: VLBI mapping of M15 Exp. Code: GV020C Schedule Version: 1.00 Processed by SCHED version: 9.30 Release near March 23, 2010 PI: W.H.T. Vlemmings Address: Argelander Institute for Astronomy Auf dem Huegel 71 Bonn Germany Phone: +49 (0)228 733670 EMAIL: wouter@astro.uni-bonn.de Fax: +49 (0)228 731775 Phone during observation: +49 (0)228 733670 Observing mode: Phase-referencing of a source at 18cm (1 Gb/s) Notes: Global VLBI incl. Arecibo and GBT(at 512 Gb/s) Westerbork (Wb1) used when source down at Arecibo PCAL off Schedule for ARECIBO (Code Ar ) Page 2 VLBI mapping of M15 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. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2010 Day 156 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 789.51 789.51 789.51 789.51 757.51 757.51 757.51 757.51 725.51 725.51 725.51 725.51 693.51 693.51 693.51 693.51 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 08 20 00 M15 20 47 37 78.0 119.2 -0.7 -58.0 0 1 1 0 08 20 00 08 23 30 --- 20 51 07 78.7 121.5 -0.7 -55.9 210 F 1 27 08 20 01 08 25 20 M15 20 52 57 79.1 122.8 -0.6 -54.7 92 1 1 27 08 25 20 08 28 50 --- 20 56 28 79.8 125.6 -0.6 -52.2 210 F 1 54 08 25 21 08 28 50 J2139+1423 20 56 28 79.0 109.1 -0.7 -67.8 -51 1 1 54 No stop 08 30 30 =2136+141 20 58 08 79.3 109.9 -0.7 -67.1 49 F 1 67 08 28 51 08 30 30 M15 20 58 08 80.1 127.0 -0.5 -50.8 -52 1 1 67 No stop 08 34 00 --- 21 01 39 80.7 130.4 -0.5 -47.7 158 F 1 94 08 30 31 08 35 50 M15 21 03 29 81.1 132.3 -0.5 -45.9 93 1 1 94 08 35 50 08 39 20 --- 21 07 00 81.7 136.4 -0.4 -42.0 210 F 1 121 08 35 51 08 39 20 J2139+1423 21 07 00 81.3 115.4 -0.5 -62.3 -62 1 1 121 No stop 08 41 00 =2136+141 21 08 40 81.6 116.7 -0.5 -61.2 38 F 1 134 08 39 21 08 41 00 M15 21 08 40 81.9 138.6 -0.4 -40.0 -64 1 1 134 No stop 08 44 30 --- 21 12 11 82.4 143.6 -0.3 -35.2 146 F 1 161 08 41 01 08 46 20 M15 21 14 01 82.7 146.5 -0.3 -32.4 92 1 1 161 08 46 20 08 49 50 --- 21 17 32 83.1 152.5 -0.2 -26.6 210 F 1 188 08 46 21 08 49 50 J2139+1423 21 17 32 83.4 125.7 -0.4 -52.8 -76 1 1 188 No stop 08 51 30 =2136+141 21 19 12 83.8 127.9 -0.3 -50.6 24 F 1 201 08 49 51 08 51 30 M15 21 19 12 83.3 155.6 -0.2 -23.6 -78 1 1 201 No stop 08 55 00 --- 21 22 42 83.6 162.7 -0.1 -16.8 132 F 1 228 08 51 31 08 56 50 M15 21 24 33 83.7 166.6 -0.1 -13.0 89 1 1 228 08 56 50 09 00 20 --- 21 28 03 83.8 174.4 -0.0 -5.4 210 F 1 255 08 56 51 Schedule for ARECIBO (Code Ar ) Page 3 VLBI mapping of M15 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. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2010 Day 156 --- 09 00 20 J2139+1423 21 28 03 85.2 144.4 -0.2 -34.8 -83 1 1 255 No stop 09 02 00 =2136+141 21 29 44 85.4 148.5 -0.2 -30.8 17 F 1 268 09 00 21 09 02 00 M15 21 29 44 83.9 178.2 -0.0 -1.7 -82 1 1 268 No stop 09 05 30 --- 21 33 14 83.8 186.2 0.0 6.1 128 F 1 295 09 02 01 09 07 20 M15 21 35 04 83.8 190.4 0.1 10.1 89 1 1 295 09 07 20 09 10 50 --- 21 38 35 83.6 197.9 0.1 17.4 210 F 1 323 09 07 21 09 10 50 J2139+1423 21 38 35 86.1 176.6 -0.0 -3.3 -69 1 1 323 No stop 09 12 30 =2136+141 21 40 15 86.1 182.5 0.0 2.5 31 F 1 335 09 10 51 09 12 30 M15 21 40 15 83.4 201.3 0.2 20.7 -72 1 1 335 No stop 09 16 00 --- 21 43 46 83.1 208.0 0.2 27.1 138 F 1 363 09 12 31 09 17 50 M15 21 45 36 82.9 211.2 0.3 30.2 91 1 1 363 09 17 50 09 21 20 --- 21 49 07 82.4 216.8 0.3 35.6 210 F 1 390 09 17 51 09 21 20 J2139+1423 21 49 07 85.5 210.8 0.2 30.1 -82 1 1 390 No stop 09 23 00 =2136+141 21 50 47 85.3 215.0 0.2 34.2 18 F 1 403 09 21 21 09 23 00 M15 21 50 47 82.2 219.3 0.3 37.9 -83 1 1 403 No stop 09 26 30 --- 21 54 18 81.6 223.9 0.4 42.4 127 F 1 430 09 23 01 09 28 20 M15 21 56 08 81.3 226.1 0.4 44.4 94 1 1 430 09 28 20 09 31 50 --- 21 59 38 80.7 229.9 0.5 48.0 210 F 1 457 09 28 21 09 31 50 J2139+1423 21 59 38 83.8 231.7 0.3 50.3 -84 1 1 457 No stop 09 33 30 =2136+141 22 01 19 83.5 234.0 0.4 52.5 16 F 1 470 09 31 51 09 33 30 M15 22 01 19 80.4 231.5 0.5 49.5 -83 1 1 470 No stop 09 37 00 --- 22 04 49 79.7 234.7 0.6 52.4 127 F 1 497 09 33 31 09 39 20 M15 22 07 10 79.2 236.5 0.6 54.1 120 1 1 497 09 39 20 09 43 20 --- 22 11 10 78.4 239.4 0.7 56.7 240 F 1 528 09 39 21 09 44 20 J2139+1423 22 12 10 81.3 244.7 0.5 62.4 -16 1 1 528 09 44 20 09 45 30 =2136+141 22 13 21 81.0 245.5 0.6 63.1 54 F 1 537 09 44 21 09 47 00 3C454.3 22 14 51 80.3 101.2 -0.7 -75.8 -267 1 1 537 09 47 00 10 00 00 --- 22 27 53 83.3 107.6 -0.4 -70.4 513 F 1 637 09 47 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: gv020.18cm Matching groups in /Users/wouter/bin/Sched/catalogs/freq.dat: arlb5c RX=LBW, with lfbf=5, upper 300 MHz CS 15-May-06 Setup group: 8 Station: ARECIBO Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 Speedup factor: 0.50 Disk used to record data. 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= L L U U L L U U L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 1 2 3 4 3 4 5 6 5 6 7 8 7 8 BBC SB= U U L L U U L L U U L L U U L L IF = A C A C A C A C A C A C A C A C The following frequency sets based on this setup were used. Frequency Set: 9 Setup file default. Used pcal sets: 1 LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 789.51 789.51 789.51 789.51 757.51 757.51 757.51 757.51 725.51 725.51 725.51 725.51 693.51 693.51 693.51 693.51 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 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, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off SOURCE LIST -- VLBI mapping of M15 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) * M15 21 27 33.315207 * 21 29 58.350000 21 30 30.007358 0.00 11 56 49.77559 * 12 10 01.50000 12 12 45.25125 0.00 From catalog imbedded in main SCHED input file. 3.742 scan hours, 89.668 baseline hours above horizon. * J2139+1423 21 36 37.412147 * 21 39 01.309269 21 39 32.675149 0.01 2136+141 14 10 00.62107 * 14 23 35.99222 14 26 24.08148 0.01 J2139+14 /Users/wouter/bin/Sched/catalogs/sources.vlba GSFC Nov. 2009 Solution 2009a 44965 Observations 1.322 scan hours, 25.406 baseline hours above horizon. J2253+1608 22 51 29.519743 * 22 53 57.747942 22 54 29.611486 0.01 * 3C454.3 15 52 54.34806 * 16 08 53.56089 16 12 11.82485 0.01 2251+158 /Users/wouter/bin/Sched/catalogs/sources.vlba J2253+16 GSFC Nov. 2009 Solution 2009a 39040 Observations 0.383 scan hours, 10.205 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) M15 103.7 J2139+1423 100.7 3C454.3 83.5 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