COVER INFORMATION Station: ARECIBO (Code Ar ) Experiment: VLBI mapping of M15 Exp. Code: GV020D Schedule Version: 3.00 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 v.3: Jb1 replaced by Jb2 & Wb in along with Ar (no Nt) 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 ---------------------------------------------------------------------------------------- --- Tue 2 Nov 2010 Day 306 --- 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 21 55 00 M15 20 16 14 71.1 106.2 -1.2 -68.8 0 1 1 0 21 55 00 21 58 30 --- 20 19 44 71.9 107.2 -1.2 -68.1 210 F 1 27 21 55 01 22 00 20 M15 20 21 35 72.3 107.8 -1.1 -67.6 91 1 1 27 22 00 20 22 03 50 --- 20 25 05 73.1 108.9 -1.1 -66.8 210 F 1 54 22 00 21 22 03 50 J2139+1423 20 25 05 71.7 99.6 -1.2 -75.1 -41 1 1 54 No stop 22 05 00 =2136+141 20 26 15 72.0 99.8 -1.2 -75.0 29 F 1 63 22 03 51 22 05 00 M15 20 26 15 73.3 109.3 -1.1 -66.4 -41 1 1 63 No stop 22 08 30 --- 20 29 46 74.1 110.5 -1.0 -65.4 169 F 1 90 22 05 01 22 10 20 M15 20 31 36 74.5 111.2 -1.0 -64.8 92 1 1 90 22 10 20 22 13 50 --- 20 35 07 75.3 112.7 -0.9 -63.7 210 F 1 117 22 10 21 22 13 50 J2139+1423 20 35 07 74.1 101.8 -1.1 -73.7 -39 1 1 117 No stop 22 15 00 =2136+141 20 36 17 74.3 102.1 -1.1 -73.4 31 F 1 126 22 13 51 22 15 00 M15 20 36 17 75.6 113.2 -0.9 -63.2 -38 1 1 126 No stop 22 18 30 --- 20 39 48 76.3 114.8 -0.8 -61.8 172 F 1 154 22 15 01 22 20 20 M15 20 41 38 76.7 115.7 -0.8 -61.0 92 1 1 154 22 20 20 22 23 50 --- 20 45 09 77.5 117.6 -0.8 -59.4 210 F 1 181 22 20 21 22 23 50 J2139+1423 20 45 09 76.4 104.6 -0.9 -71.5 -42 1 1 181 No stop 22 25 00 =2136+141 20 46 19 76.7 105.0 -0.9 -71.2 28 F 1 190 22 23 51 22 25 00 M15 20 46 19 77.7 118.3 -0.7 -58.7 -43 1 1 190 No stop 22 28 30 --- 20 49 49 78.4 120.5 -0.7 -56.8 167 F 1 217 22 25 01 22 30 20 M15 20 51 40 78.8 121.8 -0.6 -55.6 92 1 1 217 22 30 20 22 33 50 --- 20 55 10 79.5 124.5 -0.6 -53.2 210 F 1 244 22 30 21 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 ---------------------------------------------------------------------------------------- --- Tue 2 Nov 2010 Day 306 --- 22 33 50 J2139+1423 20 55 10 78.7 108.5 -0.7 -68.4 -50 1 1 244 No stop 22 35 00 =2136+141 20 56 20 78.9 109.0 -0.7 -67.9 20 F 1 253 22 33 51 22 35 00 M15 20 56 20 79.7 125.4 -0.6 -52.3 -51 1 1 253 No stop 22 38 30 --- 20 59 51 80.4 128.6 -0.5 -49.4 159 F 1 280 22 35 01 22 40 20 M15 21 01 41 80.7 130.4 -0.5 -47.7 93 1 1 280 22 40 20 22 43 50 --- 21 05 12 81.4 134.2 -0.4 -44.1 210 F 1 307 22 40 21 22 43 50 J2139+1423 21 05 12 80.9 114.0 -0.6 -63.5 -60 1 1 307 No stop 22 45 30 =2136+141 21 06 52 81.2 115.2 -0.5 -62.5 40 F 1 320 22 43 51 22 45 30 M15 21 06 52 81.6 136.2 -0.4 -42.2 -62 1 1 320 No stop 22 49 00 --- 21 10 23 82.2 140.9 -0.3 -37.8 148 F 1 347 22 45 31 22 50 50 M15 21 12 13 82.5 143.6 -0.3 -35.2 92 1 1 347 22 50 50 22 54 20 --- 21 15 44 82.9 149.3 -0.2 -29.7 210 F 1 374 22 50 51 22 54 20 J2139+1423 21 15 44 83.1 123.4 -0.4 -54.9 -73 1 1 374 No stop 22 56 00 =2136+141 21 17 24 83.4 125.4 -0.4 -53.0 27 F 1 387 22 54 21 22 56 00 M15 21 17 24 83.1 152.2 -0.2 -26.9 -75 1 1 387 No stop 22 59 30 --- 21 20 54 83.5 158.9 -0.2 -20.4 135 F 1 414 22 56 01 23 01 20 M15 21 22 45 83.6 162.7 -0.1 -16.8 90 1 1 414 23 01 20 23 04 50 --- 21 26 15 83.8 170.3 -0.1 -9.4 210 F 1 441 23 01 21 23 04 50 J2139+1423 21 26 15 85.0 140.2 -0.2 -38.9 -83 1 1 441 No stop 23 06 30 =2136+141 21 27 56 85.2 144.0 -0.2 -35.2 17 F 1 454 23 04 51 23 06 30 M15 21 27 56 83.8 174.1 0.0 -5.7 -83 1 1 454 No stop 23 10 00 --- 21 31 26 83.9 182.1 0.0 2.0 127 F 1 481 23 06 31 23 11 50 M15 21 33 16 83.8 186.3 0.0 6.1 89 1 1 481 23 11 50 23 15 20 --- 21 36 47 83.7 194.1 0.1 13.7 210 F 1 508 23 11 51 23 15 20 J2139+1423 21 36 47 86.0 170.2 0.0 -9.6 -68 1 1 508 No stop 23 17 00 =2136+141 21 38 27 86.1 176.1 0.0 -3.9 32 F 1 521 23 15 21 23 17 00 M15 21 38 27 83.6 197.6 0.1 17.1 -69 1 1 521 No stop 23 20 30 --- 21 41 58 83.3 204.7 0.2 23.9 141 F 1 548 23 17 01 23 22 20 M15 21 43 48 83.1 208.1 0.2 27.2 91 1 1 548 23 22 20 23 25 50 --- 21 47 19 82.7 214.1 0.3 32.9 210 F 1 575 23 22 21 Schedule for ARECIBO (Code Ar ) Page 4 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 ---------------------------------------------------------------------------------------- --- Tue 2 Nov 2010 Day 306 --- 23 25 50 J2139+1423 21 47 19 85.7 205.8 0.1 25.2 -81 1 1 575 No stop 23 27 30 =2136+141 21 48 59 85.5 210.4 0.2 29.8 19 F 1 588 23 25 51 23 27 30 M15 21 48 59 82.4 216.7 0.3 35.4 -82 1 1 588 No stop 23 31 00 --- 21 52 30 81.9 221.6 0.4 40.2 128 F 1 615 23 27 31 23 32 50 M15 21 54 20 81.6 224.0 0.4 42.4 93 1 1 615 23 32 50 23 36 20 --- 21 57 50 81.0 228.0 0.5 46.2 210 F 1 643 23 32 51 23 36 20 J2139+1423 21 57 50 84.1 229.0 0.3 47.7 -84 1 1 643 No stop 23 38 00 =2136+141 21 59 31 83.8 231.6 0.3 50.2 16 F 1 655 23 36 21 23 38 00 M15 21 59 31 80.7 229.8 0.5 47.9 -84 1 1 655 No stop 23 41 30 --- 22 03 01 80.1 233.1 0.5 51.0 126 F 1 683 23 38 01 23 43 20 M15 22 04 52 79.7 234.7 0.6 52.4 93 1 1 683 23 43 20 23 46 50 --- 22 08 22 79.0 237.5 0.6 55.0 210 F 1 710 23 43 21 23 46 50 J2139+1423 22 08 22 82.1 241.6 0.5 59.6 -82 1 1 710 No stop 23 48 30 =2136+141 22 10 02 81.7 243.1 0.5 60.9 18 F 1 723 23 46 51 23 48 30 M15 22 10 02 78.7 238.7 0.7 56.0 -82 1 1 723 No stop 23 52 00 --- 22 13 33 78.0 241.0 0.7 58.1 128 F 1 750 23 48 31 23 54 20 M15 22 15 53 77.5 242.4 0.8 59.4 120 1 1 750 23 54 20 23 58 20 --- 22 19 54 76.6 244.5 0.8 61.2 240 F 1 781 23 54 21 --- Start: Tue 2 Nov 2010 Day 306 -- Stop: Wed 3 Nov 2010 Day 307 --- 23 59 20 J2139+1423 22 20 54 79.3 250.1 0.7 67.1 -14 1 1 781 23 59 20 00 00 30 =2136+141 22 22 04 79.1 250.6 0.7 67.6 56 F 1 790 23 59 21 00 02 00 3C454.3 22 23 35 82.3 104.9 -0.5 -72.8 -271 1 1 790 00 02 00 00 15 00 --- 22 36 37 85.2 115.8 -0.3 -62.8 509 F 1 890 00 02 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 /aps3/sched9.3/catalogs/freq.dat: arlb5c RX=LBW, with lfbf=5, upper 300 MHz CS 15-May-06 Setup group: 7 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: 8 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 30.875852 0.00 11 56 49.77559 * 12 10 01.50000 12 13 08.36835 0.00 From catalog imbedded in main SCHED input file. 3.742 scan hours, 74.535 baseline hours above horizon. * J2139+1423 21 36 37.412147 * 21 39 01.309269 21 39 33.636871 0.01 2136+141 14 10 00.62107 * 14 23 35.99222 14 26 48.76615 0.01 J2139+14 /aps3/sched9.3/catalogs/sources.vlba GSFC Nov. 2009 Solution 2009a 44965 Observations 1.322 scan hours, 22.854 baseline hours above horizon. J2253+1608 22 51 29.519743 * 22 53 57.747942 22 54 31.472333 0.01 * 3C454.3 15 52 54.34806 * 16 08 53.56089 16 12 38.23678 0.01 2251+158 /aps3/sched9.3/catalogs/sources.vlba J2253+16 GSFC Nov. 2009 Solution 2009a 39040 Observations 0.383 scan hours, 9.027 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 107.1 J2139+1423 109.7 3C454.3 127.8 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