COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: BP120; 15 GHz obs of the fast superluminal 0827+243 Exp. Code: bp120e Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Glenn Piner Address: Whittier College Dept. Physics and Astronomy 13406 E. Philadelphia St Whittier CA 90608 Phone: 562-464-4556 EMAIL: gpiner@whittier.edu Fax: 562-464-4514 Phone during observation: 562-464-4556 Observing mode: 128-8-1 Notes: Five epochs of 5 hours, with ~2 month separations Please use same keyin file for all five epochs Fringe finders/pol. cal. : J0423-01, OJ287, 3C279 Do not observe between 10-jul and 20-aug or between 20-sep and 2 Schedule for VLBA_MK (Code Mk ) Page 2 BP120; 15 GHz obs of the fast superluminal 0827+243 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). 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 ---------------------------------------------------------------------------------------- --- Mon 29 Aug 2005 Day 241 --- Next scan frequencies: 15349.49 15349.49 15357.49 15357.49 15365.49 15365.49 15373.49 15373.49 Next BBC frequencies: 749.49 749.49 757.49 757.49 765.49 765.49 773.49 773.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 14 40 52 J0423-01 02 50 39 58.9 130.2 -1.5 -46.0 0 1 1 0 14 40 52 14 44 51 --- 02 54 39 59.6 131.6 -1.5 -44.8 239 F 1 1596 14 41 05 14 47 01 0827+243 02 56 49 13.6 68.9 -5.6 -74.1 31 1 1 1596 14 47 01 15 06 57 --- 03 16 49 18.0 70.1 -5.2 -75.8 1197 F 1 9574 14 47 14 15 09 17 J0423-01 03 19 09 63.6 141.4 -1.1 -36.0 42 1 1 9574 15 09 17 15 13 16 --- 03 23 09 64.2 143.3 -1.0 -34.3 239 F 1 11169 15 09 30 15 15 46 OJ287 03 25 39 13.5 73.2 -5.5 -73.6 42 1 1 11169 15 15 46 15 19 45 --- 03 29 39 14.4 73.5 -5.4 -73.8 239 F 1 12765 15 15 59 15 20 15 0827+243 03 30 09 20.9 70.8 -5.0 -76.9 11 1 2 12765 15 20 15 15 34 13 --- 03 44 09 24.0 71.6 -4.8 -78.1 838 R 1 16850 15 20 28 15 36 43 J0423-01 03 46 39 67.0 155.8 -0.6 -22.7 58 1 2 16850 15 36 43 15 40 42 --- 03 50 39 67.4 158.2 -0.5 -20.5 239 R 1 15255 15 36 56 15 43 11 0827+243 03 53 09 26.1 72.0 -4.6 -78.8 61 1 2 15255 15 43 11 16 09 07 --- 04 19 09 31.9 73.2 -4.2 -80.9 1556 R 1 4883 15 43 24 16 09 37 OJ287 04 19 39 25.8 76.6 -4.6 -77.1 12 1 2 4883 16 09 37 16 14 06 --- 04 24 09 26.8 76.9 -4.5 -77.3 269 R 1 3088 16 09 50 16 14 36 0827+243 04 24 39 33.1 73.5 -4.1 -81.3 11 1 3 3088 16 14 36 16 40 32 --- 04 50 39 39.0 74.4 -3.7 -83.4 1556 F 1 7284 16 14 49 16 40 32 0827+243 04 50 39 39.0 74.4 -3.7 -83.4 -4 1 4 7284 16 40 32 17 07 28 --- 05 17 39 45.1 75.2 -3.2 -85.7 1612 R 1 17146 16 40 32 17 08 27 OJ287 05 18 39 39.4 79.8 -3.6 -80.4 42 1 4 17146 17 08 27 17 12 27 --- 05 22 39 40.3 80.0 -3.5 -80.6 239 R 1 15550 17 08 40 17 13 27 0827+243 05 23 39 46.5 75.4 -3.1 -86.2 41 1 4 15550 17 13 27 17 40 22 --- 05 50 39 52.7 75.8 -2.7 -88.6 1616 R 1 4780 17 13 40 Schedule for VLBA_MK (Code Mk ) Page 3 BP120; 15 GHz obs of the fast superluminal 0827+243 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). 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 ---------------------------------------------------------------------------------------- --- Mon 29 Aug 2005 Day 241 --- 17 40 22 0827+243 05 50 39 52.7 75.8 -2.7 -88.6 -4 1 5 4780 17 40 22 18 03 18 --- 06 13 39 57.9 75.8 -2.3 -91.0 1372 F 1 4395 17 40 22 18 11 17 OJ287 06 21 39 54.0 82.8 -2.6 -83.7 465 1 5 4395 18 11 17 18 15 16 --- 06 25 39 55.0 83.0 -2.5 -83.9 239 F 1 5991 18 11 30 18 16 16 0827+243 06 26 39 60.9 75.7 -2.1 -92.4 42 1 5 5991 18 16 16 18 40 12 --- 06 50 39 66.3 74.8 -1.7 -95.7 1436 F 1 15565 18 16 29 18 40 12 0827+243 06 50 39 66.3 74.8 -1.7 -95.7 -4 1 6 15565 18 40 12 19 07 08 --- 07 17 39 72.4 72.3 -1.2 -100.8 1612 R 1 8865 18 40 12 19 07 38 OJ287 07 18 09 67.2 85.1 -1.6 -86.5 14 1 6 8865 19 07 38 19 11 37 --- 07 22 09 68.2 85.2 -1.5 -86.7 239 R 1 7269 19 07 51 19 14 07 3C279 07 24 39 4.6 97.9 -5.5 -69.5 16 1 6 7269 19 14 07 19 18 06 --- 07 28 39 5.6 98.2 -5.5 -69.4 239 R 1 5674 19 14 20 19 18 36 0827+243 07 29 09 75.0 70.3 -1.0 -103.9 -115 1 7 5674 19 18 36 19 33 34 --- 07 44 09 78.3 66.0 -0.8 -109.5 783 F 1 310 19 18 49 19 36 03 3C279 07 46 39 9.7 99.8 -5.2 -68.7 7 1 7 310 19 36 03 19 40 03 --- 07 50 39 10.7 100.2 -5.1 -68.6 239 F 1 1906 19 36 16 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/filehost/cwalker/sched/setups/v2cm-128-8-1.set Matches group v2cm_d3 in /home/filehost/cwalker/sched/catalogs/freq.dat Fourth 2cm filter Setup group: 9 Station: VLBA_MK Total bit rate: 128 Format: VLBA1:4 Bits per sample: 1 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 2.00 Tape used at high density at 80.000 ips. Time per pass is 44.00 minutes. 1st LO= 14600.00 14600.00 14600.00 14600.00 14600.00 14600.00 14600.00 14600.00 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= U U U U U U U U IF = B D B D B D B D VLBA FE= omit 2cm omit 2cm VLBA Synth= 14.6 10.9 10.9 The following frequency sets based on this setup were used. Frequency Set: 9 Setup file default. Used pcal sets: 1 LO sum= 15349.49 15349.49 15357.49 15357.49 15365.49 15365.49 15373.49 15373.49 BBC fr= 749.49 749.49 757.49 757.49 765.49 765.49 773.49 773.49 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= 510 510 510 510 6510 6510 6510 6510 PCALFR2= 510 510 510 510 6510 6510 6510 6510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- BP120; 15 GHz obs of the fast superluminal 0827+243 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) J0423-0120 04 20 43.539850 * 04 23 15.800727 04 23 32.820027 0.20 0420-014 -01 27 28.70008 *-01 20 33.06538 -01 19 31.08695 0.30 * J0423-01 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.199 scan hours, 8.975 baseline hours above horizon. J0830+2410 08 27 54.398590 * 08 30 52.086189 08 31 10.862765 0.22 * 0827+243 24 21 07.66381 * 24 10 59.82040 24 10 01.61406 0.40 J0830+24 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 3.806 scan hours, 170.238 baseline hours above horizon. J0854+2006 08 51 57.250617 * 08 54 48.874929 08 55 06.938779 0.21 0851+202 20 17 58.41740 * 20 06 30.64085 20 05 24.34774 0.40 J0854+20 /home/filehost/cwalker/sched/catalogs/sources.vlba * OJ287 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.341 scan hours, 15.333 baseline hours above horizon. J1256-0547 12 53 35.831289 * 12 56 11.166557 12 56 27.491159 0.20 1253-055 -05 31 07.99581 *-05 47 21.52467 -05 49 06.18807 0.31 * 3C279 /home/filehost/cwalker/sched/catalogs/sources.vlba J1256-05 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.199 scan hours, 8.366 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) J0423-01 92.5 0827+243 32.7 OJ287 26.0 3C279 38.8 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