COVER INFORMATION Station: ARECIBO (Code Ar ) Experiment: VLBI mapping of M15 Exp. Code: GV020G Schedule Version: 1.00 Processed by SCHED version: 10.00 Release Sept. 15, 2011 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. GBT(at 512 Gb/s) and Arecibo Single Westerbork antenna (Wb1) PCAL off Schedule for ARECIBO (Code Ar ) Page 2 VLBI mapping of M15 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Nov 2011 Day 309 --- 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 40 00 M15 20 12 04 70.1 105.1 -1.3 D -69.6 0 0 21 40 00 21 43 30 --- 20 15 34 70.9 106.0 -1.2 -69.0 0 27 21 40 01 21 45 20 M15 20 17 25 71.3 106.5 -1.2 -68.6 100 27 21 45 20 21 48 50 --- 20 20 55 72.1 107.6 -1.2 -67.8 210 54 21 45 21 21 48 50 J2139+1423 20 20 55 70.7 98.7 -1.3 -75.7 -39 54 No stop 21 50 00 =2136+141 20 22 05 71.0 99.0 -1.3 -75.5 31 63 21 48 51 21 50 00 M15 20 22 05 72.4 107.9 -1.1 -67.5 -45 63 No stop 21 53 30 --- 20 25 36 73.2 109.0 -1.1 -66.6 165 90 21 50 01 21 55 20 M15 20 27 26 73.6 109.7 -1.1 -66.1 100 90 21 55 20 21 58 50 --- 20 30 57 74.4 111.0 -1.0 -65.1 210 117 21 55 21 21 58 50 J2139+1423 20 30 57 73.1 100.8 -1.1 -74.4 -37 117 No stop 22 00 00 =2136+141 20 32 07 73.4 101.0 -1.1 -74.2 33 126 21 58 51 22 00 00 M15 20 32 07 74.6 111.4 -1.0 -64.7 -42 126 No stop 22 03 30 --- 20 35 38 75.4 112.9 -0.9 -63.5 168 154 22 00 01 22 05 20 M15 20 37 28 75.8 113.7 -0.9 -62.8 100 154 22 05 20 22 08 50 --- 20 40 58 76.6 115.4 -0.8 -61.4 210 181 22 05 21 22 08 50 J2139+1423 20 40 58 75.4 103.3 -1.0 -72.5 -40 181 No stop 22 10 00 =2136+141 20 42 09 75.7 103.7 -1.0 -72.3 30 190 22 08 51 22 10 00 M15 20 42 09 76.8 116.0 -0.8 -60.8 -41 190 No stop 22 13 30 --- 20 45 39 77.6 117.9 -0.7 -59.1 169 217 22 10 01 22 15 20 M15 20 47 30 78.0 119.0 -0.7 -58.2 101 217 22 15 20 22 18 50 --- 20 51 00 78.7 121.3 -0.7 -56.1 210 244 22 15 21 Schedule for ARECIBO (Code Ar ) Page 3 VLBI mapping of M15 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Nov 2011 Day 309 --- 22 18 50 J2139+1423 20 51 00 77.7 106.7 -0.8 -69.9 -46 244 No stop 22 20 00 =2136+141 20 52 10 78.0 107.1 -0.8 -69.5 24 253 22 18 51 22 20 00 M15 20 52 10 78.9 122.1 -0.6 -55.3 -48 253 No stop 22 23 30 --- 20 55 41 79.6 124.8 -0.6 -52.9 162 280 22 20 01 22 25 20 M15 20 57 31 80.0 126.4 -0.6 -51.4 101 280 22 25 20 22 28 50 --- 21 01 02 80.6 129.6 -0.5 -48.4 210 307 22 25 21 22 28 50 J2139+1423 21 01 02 80.0 111.4 -0.6 -65.9 -54 307 No stop 22 30 30 =2136+141 21 02 42 80.3 112.4 -0.6 -65.0 46 320 22 28 51 22 30 30 M15 21 02 42 80.9 131.4 -0.5 -46.8 -59 320 No stop 22 34 00 --- 21 06 13 81.5 135.3 -0.4 -43.1 151 347 22 30 31 22 35 50 M15 21 08 03 81.8 137.6 -0.4 -40.9 100 347 22 35 50 22 39 20 --- 21 11 33 82.4 142.5 -0.3 -36.2 210 374 22 35 51 22 39 20 J2139+1423 21 11 33 82.2 119.0 -0.5 -59.0 -65 374 No stop 22 41 00 =2136+141 21 13 14 82.6 120.6 -0.4 -57.5 35 387 22 39 21 22 41 00 M15 21 13 14 82.6 145.1 -0.3 -33.8 -74 387 No stop 22 44 30 --- 21 16 44 83.0 150.9 -0.2 -28.1 136 414 22 41 01 22 46 20 M15 21 18 35 83.2 154.3 -0.2 -24.9 99 414 22 46 20 22 49 50 --- 21 22 05 83.5 161.2 -0.1 -18.2 210 441 22 46 21 22 49 50 J2139+1423 21 22 05 84.3 132.2 -0.3 -46.6 -76 441 No stop 22 51 30 =2136+141 21 23 45 84.6 135.1 -0.3 -43.8 24 454 22 49 51 22 51 30 M15 21 23 45 83.7 164.8 -0.1 -14.8 -89 454 No stop 22 55 00 --- 21 27 16 83.8 172.5 -0.1 -7.3 121 481 22 51 31 22 56 50 M15 21 29 06 83.9 176.7 -0.0 -3.2 98 481 22 56 50 23 00 20 --- 21 32 37 83.9 184.7 0.0 4.6 210 508 22 56 51 23 00 20 J2139+1423 21 32 37 85.8 156.4 -0.1 -23.1 -70 508 No stop 23 02 00 =2136+141 21 34 17 85.9 161.7 -0.1 -18.0 30 521 23 00 21 23 02 00 M15 21 34 17 83.8 188.5 0.1 8.2 -82 521 No stop 23 05 30 --- 21 37 48 83.6 196.2 0.1 15.7 128 548 23 02 01 23 07 20 M15 21 39 38 83.5 200.0 0.2 19.4 99 548 23 07 20 23 10 50 --- 21 43 09 83.2 206.8 0.2 26.0 210 575 23 07 21 Schedule for ARECIBO (Code Ar ) Page 4 VLBI mapping of M15 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Nov 2011 Day 309 --- 23 10 50 J2139+1423 21 43 09 86.0 192.4 0.1 12.2 -75 575 No stop 23 12 30 =2136+141 21 44 49 85.9 198.0 0.1 17.6 25 588 23 10 51 23 12 30 M15 21 44 49 83.0 209.8 0.2 28.9 -83 588 No stop 23 16 00 --- 21 48 19 82.5 215.6 0.3 34.4 127 615 23 12 31 23 17 50 M15 21 50 10 82.3 218.4 0.3 37.1 100 615 23 17 50 23 21 20 --- 21 53 40 81.7 223.1 0.4 41.6 210 643 23 17 51 23 21 20 J2139+1423 21 53 40 84.9 221.4 0.2 40.4 -79 643 No stop 23 23 00 =2136+141 21 55 21 84.6 224.7 0.3 43.6 21 655 23 21 21 23 23 00 M15 21 55 21 81.4 225.2 0.4 43.5 -89 655 No stop 23 26 30 --- 21 58 51 80.8 229.1 0.5 47.2 121 683 23 23 01 23 28 20 M15 22 00 41 80.5 230.9 0.5 49.0 100 683 23 28 20 23 31 50 --- 22 04 12 79.8 234.1 0.6 51.9 210 710 23 28 21 23 31 50 J2139+1423 22 04 12 82.9 237.5 0.4 55.7 -77 710 No stop 23 33 30 =2136+141 22 05 52 82.6 239.2 0.4 57.4 23 723 23 31 51 23 33 30 M15 22 05 52 79.5 235.5 0.6 53.2 -89 723 No stop 23 37 00 --- 22 09 23 78.8 238.2 0.6 55.6 121 750 23 33 31 23 39 20 M15 22 11 43 78.3 239.8 0.7 57.1 130 750 23 39 20 23 43 20 --- 22 15 44 77.5 242.3 0.8 59.3 240 781 23 39 21 23 44 20 J2139+1423 22 16 44 80.3 247.8 0.6 65.1 -14 781 23 44 20 23 45 30 =2136+141 22 17 54 80.0 248.4 0.6 65.7 56 790 23 44 21 23 47 00 3C454.3 22 19 25 81.3 102.9 -0.6 -74.5 -265 790 23 47 00 23 59 59 --- 22 32 27 84.3 111.1 -0.4 -67.3 514 890 23 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: 6 Station: ARECIBO Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: 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 these setups 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 Matching frequency sets: 8 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 SOURCES USED IN RECORDING SCANS -- 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 33.757960 0.00 11 56 49.77559 * 12 10 01.50000 12 13 26.07267 0.00 From catalog imbedded in main SCHED input file. 3.742 scan and 74.441 baseline hours in setup: gv020.18cm Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 * J2139+1423 21 36 37.412147 * 21 39 01.309269 21 39 36.504826 0.00 2136+141 14 10 00.62105 * 14 23 35.99220 14 27 06.85726 0.01 J2139+14 /Users/wouter/bin/Sched/catalogs/sources.vlba GSFC 2010a astro solution 47149 Observations 1.322 scan and 20.311 baseline hours in setup: gv020.18cm Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 J2253+1608 22 51 29.519738 * 22 53 57.747937 22 54 34.451983 0.76 * 3C454.3 15 52 54.34811 * 16 08 53.56094 16 12 58.32202 0.74 2251+158 /Users/wouter/bin/Sched/catalogs/sources.vlba J2253+16 GSFC 2010a astro solution 39550 Observations 0.383 scan and 9.032 baseline hours in setup: gv020.18cm Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 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 104.7 J2139+1423 107.3 3C454.3 125.4 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