COVER INFORMATION Station: VLBA_BR (Code Br ) Experiment: be028 - VLBA 6cm observations of 3C303 Exp. Code: be028 Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 PI: Philip Edwards Address: Institute of Space and Astronautical Science 3-1-1 Yoshinodai, Sagamihara Kanagawa 229-8510 Japan Phone: +81-42-759-8342 EMAIL: pge@vsop.isas.ac.jp Fax: +81-42-759-8485 Phone during observation: +81-42-759-8342 Observing mode: 128-4-2 at 2cm Notes: Fringe-finder: 3C279 Schedule for VLBA_BR (Code Br ) Page 2 be028 - VLBA 6cm observations of 3C303 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) ---------------------------------------------------------------------------------------- --- Tue 15 Apr 2003 Day 105 --- Next scan frequencies: 4604.99 4604.99 4848.99 4848.99 4998.99 4998.99 5088.99 5088.99 Next BBC frequencies: 504.99 504.99 748.99 748.99 898.99 898.99 988.99 988.99 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 04 10 49 3C303 09 43 45 44.0 55.6 -5.0 -63.5 0 1 1 0 04 10 49 04 42 43 --- 10 15 45 48.4 58.6 -4.5 -67.7 1915 F 1 12765 04 44 43 1308+326 10 17 45 54.0 100.0 -2.9 -51.1 86 1 1 12765 04 44 43 04 48 42 --- 10 21 45 54.7 100.9 -2.8 -50.9 239 F 1 14361 04 50 42 3C279 10 23 45 26.5 136.6 -2.5 -27.4 57 1 1 14361 04 50 42 04 54 41 --- 10 27 45 27.0 137.6 -2.5 -26.9 239 F 1 15956 04 56 41 3C303 10 29 45 50.5 59.8 -4.2 -69.5 62 1 2 15956 04 56 41 05 28 36 --- 11 01 45 55.1 62.3 -3.7 -73.8 1915 R 1 6479 05 30 36 1308+326 11 03 45 61.4 111.9 -2.1 -47.1 81 1 2 6479 05 30 36 05 34 35 --- 11 07 45 62.0 113.1 -2.0 -46.6 239 R 1 4883 05 36 35 3C279 11 09 45 31.2 148.5 -1.8 -20.5 52 1 2 4883 05 36 35 05 40 34 --- 11 13 45 31.5 149.6 -1.7 -19.8 239 R 1 3287 05 42 34 3C303 11 15 45 57.2 63.4 -3.5 -75.7 56 1 3 3287 05 42 34 06 14 28 --- 11 47 45 62.0 65.4 -2.9 -80.3 1915 F 1 9478 06 16 28 3C279 11 49 45 34.1 159.9 -1.1 -13.4 51 1 3 9478 06 16 28 06 20 27 --- 11 53 45 34.3 161.0 -1.0 -12.6 239 F 1 11073 06 22 27 3C303 11 55 45 63.2 65.8 -2.8 -81.5 50 1 4 11073 06 22 27 06 54 22 --- 12 27 45 68.1 67.0 -2.3 -86.7 1915 R 1 11362 06 56 21 1749+096 12 29 45 13.5 90.6 -5.4 -42.6 4 1 4 11362 06 56 21 07 00 21 --- 12 33 45 14.2 91.3 -5.3 -42.6 239 R 1 9766 07 02 21 3C303 12 35 45 69.4 67.2 -2.1 -88.1 3 1 5 9766 07 02 21 07 34 15 --- 13 07 45 74.3 66.8 -1.6 -94.8 1915 F 1 2999 07 36 15 1308+326 13 09 45 74.2 179.3 0.0 -0.6 39 1 5 2999 07 36 15 07 40 14 --- 13 13 45 74.2 182.4 0.1 1.9 239 F 1 4595 Schedule for VLBA_BR (Code Br ) Page 3 be028 - VLBA 6cm observations of 3C303 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) ---------------------------------------------------------------------------------------- --- Tue 15 Apr 2003 Day 105 --- 07 42 14 3C279 13 15 45 35.9 186.0 0.3 4.0 37 1 5 4595 07 42 14 07 46 13 --- 13 19 45 35.8 187.2 0.4 4.8 239 F 1 6190 07 48 13 3C303 13 21 45 76.4 65.8 -1.4 -98.5 32 1 6 6190 07 48 13 08 20 08 --- 13 53 45 81.2 59.3 -0.8 -111.2 1915 R 1 16245 08 22 07 1308+326 13 55 45 72.0 212.4 0.8 25.0 12 1 6 16245 08 22 07 08 26 07 --- 13 59 45 71.7 214.9 0.8 26.8 239 R 1 14649 08 28 06 1749+096 14 01 45 28.6 108.8 -3.8 -39.9 27 1 6 14649 08 28 06 08 32 06 --- 14 05 45 29.2 109.6 -3.8 -39.6 239 R 1 13053 08 34 05 3C303 14 07 45 83.1 52.4 -0.6 -120.8 6 1 6 13053 08 34 05 09 06 00 --- 14 39 45 86.1 7.8 -0.1 -171.6 1915 R 1 288 09 08 00 1749+096 14 41 45 34.7 117.9 -3.2 -36.8 11 1 7 288 09 08 00 09 11 59 --- 14 45 45 35.3 118.8 -3.1 -36.4 239 F 1 1884 09 13 59 3C279 14 47 45 30.8 212.7 1.9 21.3 51 1 7 1884 09 13 59 09 17 58 --- 14 51 45 30.4 213.8 1.9 21.9 239 F 1 3480 09 19 58 3C303 14 53 45 85.8 337.4 0.2 155.4 3 1 7 3480 09 19 58 09 51 53 --- 15 25 45 82.2 303.6 0.7 115.4 1915 F 1 16245 09 53 52 1308+326 15 27 45 59.8 251.1 2.3 48.3 69 1 8 16245 09 53 52 09 57 52 --- 15 31 45 59.2 252.2 2.4 48.8 239 R 1 17360 09 59 51 1749+096 15 33 45 41.8 131.5 -2.3 -30.5 33 1 8 17360 09 59 51 10 03 51 --- 15 37 45 42.3 132.6 -2.2 -29.9 239 R 1 15764 10 05 50 3C303 15 39 45 80.2 298.5 0.9 107.6 3 1 8 15764 10 05 50 10 37 45 --- 16 11 45 75.3 293.6 1.5 96.5 1915 R 1 2999 10 39 45 1749+096 16 13 45 46.4 143.7 -1.6 -23.6 14 1 8 2999 10 39 45 10 43 44 --- 16 17 45 46.7 145.0 -1.6 -22.8 239 R 1 1403 10 45 44 3C279 16 19 45 20.1 235.2 3.4 33.4 54 1 9 1403 10 45 44 10 49 43 --- 16 23 45 19.6 236.1 3.5 33.8 239 F 1 192 10 51 43 3C303 16 25 45 73.2 293.0 1.7 93.1 6 1 9 192 10 51 43 11 23 38 --- 16 57 45 68.3 293.0 2.2 86.8 1915 F 1 12957 Schedule for VLBA_BR (Code Br ) Page 4 be028 - VLBA 6cm observations of 3C303 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) ---------------------------------------------------------------------------------------- --- Tue 15 Apr 2003 Day 105 --- 11 25 37 1308+326 16 59 45 44.7 271.3 3.8 52.2 66 1 9 12957 11 25 37 11 29 37 --- 17 03 45 44.0 272.1 3.9 52.1 239 F 1 14553 11 31 36 1749+096 17 05 45 50.3 162.1 -0.8 -12.0 40 1 9 14553 11 31 36 11 35 36 --- 17 09 45 50.5 163.6 -0.7 -11.0 239 F 1 16149 11 37 35 3C303 17 11 45 66.1 293.4 2.5 84.5 27 1 10 16149 11 37 35 12 09 30 --- 17 43 45 61.2 294.9 3.0 79.5 1915 R 1 6286 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: rm6cmv.set Matches group v6cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA 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 speeds: Low density - 133.330 ips, High density - 80.00 ips Time per pass for 17600 ft, High density tapes is: 00:44:00 1st LO= 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 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 = A C A C A C A C VLBA FE= 6cm omit 6cm omit VLBA Synth= 15.4 4.1 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 4604.99 4604.99 4848.99 4848.99 4998.99 4998.99 5088.99 5088.99 BBC fr= 504.99 504.99 748.99 748.99 898.99 898.99 988.99 988.99 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 -- be028 - VLBA 6cm observations of 3C303 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). Source Source position (RA/Dec) (B1950) (J2000) (Date) * 3C303 14 41 24.868281 * 14 43 02.784930 14 43 10.903942 52 14 18.01052 * 52 01 36.89000 52 00 40.14159 From catalog imbedded in main SCHED input file. J1256-0547 12 53 35.831293 * 12 56 11.166560 12 56 21.611497 1253-055 -05 31 07.99572 *-05 47 21.52458 -05 48 28.24651 * 3C279 /home/filehost/cwalker/sched/catalogs/sources.vlba J1256-05 ICRF - Ext.1 Source - 1998 IERS Annual Report J1310+3220 13 08 07.560126 * 13 10 28.663845 13 10 38.717090 * 1308+326 32 36 40.23888 * 32 20 43.78295 32 19 40.72048 J1310+32 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report J1751+0939 17 49 10.387930 * 17 51 32.818573 17 51 41.878563 * 1749+096 09 39 42.82596 * 09 39 00.72851 09 38 43.49869 J1751+09 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 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) 3C303 116.5 3C279 170.3 1308+326 137.7 1749+096 112.7 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