COVER INFORMATION Station: VLBA_LA (Code La ) 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_LA (Code La ) 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 10 37 30 44.4 49.2 -4.1 -85.7 0 1 1 0 04 10 49 04 42 43 --- 11 09 30 49.3 49.3 -3.6 -91.9 1915 F 1 12765 04 44 43 1308+326 11 11 30 65.2 89.3 -2.0 -73.8 82 1 1 12765 04 44 43 04 48 42 --- 11 15 30 66.0 89.9 -1.9 -73.8 239 F 1 14361 04 50 42 3C279 11 17 30 42.4 145.7 -1.6 -27.3 66 1 1 14361 04 50 42 04 54 41 --- 11 21 30 42.8 146.9 -1.6 -26.4 239 F 1 15956 04 56 41 3C303 11 23 30 51.5 49.1 -3.3 -94.8 48 1 2 15956 04 56 41 05 28 36 --- 11 55 30 56.3 47.9 -2.8 -102.1 1915 R 1 6479 05 30 36 1308+326 11 57 30 74.5 97.6 -1.2 -72.1 77 1 2 6479 05 30 36 05 34 35 --- 12 01 30 75.3 98.6 -1.2 -71.7 239 R 1 4883 05 36 35 3C279 12 03 30 46.6 160.7 -0.9 -15.7 56 1 2 4883 05 36 35 05 40 34 --- 12 07 30 46.9 162.1 -0.8 -14.5 239 R 1 3287 05 42 34 3C303 12 09 30 58.4 46.9 -2.6 -105.6 37 1 3 3287 05 42 34 06 14 28 --- 12 41 30 63.0 43.4 -2.0 -115.0 1915 F 1 9478 06 16 28 3C279 12 43 30 48.3 175.2 -0.2 -3.9 26 1 3 9478 06 16 28 06 20 27 --- 12 47 30 48.4 176.7 -0.1 -2.7 239 F 1 11073 06 22 27 3C303 12 49 30 64.1 42.2 -1.9 -117.7 24 1 4 11073 06 22 27 06 54 22 --- 13 21 30 68.2 35.4 -1.4 -130.2 1915 R 1 11362 06 56 21 1749+096 13 23 30 24.2 95.6 -4.5 -55.0 26 1 4 11362 06 56 21 07 00 21 --- 13 27 30 25.0 96.2 -4.4 -54.9 239 R 1 9766 07 02 21 3C303 13 29 30 69.2 33.1 -1.2 -133.9 25 1 5 9766 07 02 21 07 34 15 --- 14 01 30 72.2 21.3 -0.7 -151.4 1915 F 1 2999 07 36 15 1308+326 14 03 30 78.5 256.3 0.9 68.9 -43 1 5 2999 07 36 15 07 40 14 --- 14 07 30 77.7 257.8 0.9 69.8 196 F 1 4595 Schedule for VLBA_LA (Code La ) 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 14 09 30 45.0 206.2 1.2 21.1 48 1 5 4595 07 42 14 07 46 13 --- 14 13 30 44.6 207.5 1.3 22.1 239 F 1 6190 07 48 13 3C303 14 15 30 73.0 374.7 -0.5 -160.4 2 1 6 6190 07 48 13 08 20 08 --- 14 47 30 73.7 357.6 0.1 176.9 1915 R 1 16245 08 22 07 1308+326 14 49 30 69.3 267.6 1.6 73.6 54 1 6 16245 08 22 07 08 26 07 --- 14 53 30 68.5 268.2 1.7 73.7 239 R 1 14649 08 28 06 1749+096 14 55 30 42.3 112.1 -2.9 -49.7 10 1 6 14649 08 28 06 08 32 06 --- 14 59 30 43.0 113.0 -2.9 -49.3 239 R 1 13053 08 34 05 3C303 15 01 30 73.4 -9.9 0.3 166.9 32 1 6 13053 08 34 05 09 06 00 --- 15 33 30 71.5 -24.9 0.8 146.2 1915 R 1 288 09 08 00 1749+096 15 35 30 49.5 121.7 -2.3 -44.4 16 1 7 288 09 08 00 09 11 59 --- 15 39 30 50.2 122.8 -2.2 -43.7 239 F 1 1884 09 13 59 3C279 15 41 30 33.2 231.7 2.8 39.8 41 1 7 1884 09 13 59 09 17 58 --- 15 45 30 32.5 232.6 2.8 40.4 239 F 1 3480 09 19 58 3C303 15 47 30 70.2 329.9 1.1 138.6 38 1 7 3480 09 19 58 09 51 53 --- 16 19 30 66.4 321.1 1.6 124.1 1915 F 1 16245 09 53 52 1308+326 16 21 30 50.7 279.2 3.2 71.4 82 1 8 16245 09 53 52 09 57 52 --- 16 25 30 49.9 279.6 3.2 71.2 239 R 1 17360 09 59 51 1749+096 16 27 30 57.6 138.6 -1.4 -33.0 20 1 8 17360 09 59 51 10 03 51 --- 16 31 30 58.1 140.2 -1.3 -31.8 239 R 1 15764 10 05 50 3C303 16 33 30 64.6 318.4 1.8 118.9 -5 1 8 15764 10 05 50 10 37 45 --- 17 05 30 60.1 314.1 2.4 108.7 1910 R 1 2999 10 39 45 1749+096 17 07 30 62.0 156.3 -0.7 -19.3 8 1 8 2999 10 39 45 10 43 44 --- 17 11 30 62.3 158.3 -0.7 -17.7 239 R 1 1403 10 45 44 3C279 17 13 30 16.9 249.5 4.3 49.8 23 1 9 1403 10 45 44 10 49 43 --- 17 17 30 16.2 250.2 4.4 50.1 239 F 1 192 10 51 43 3C303 17 19 30 58.0 312.9 2.6 104.9 30 1 9 192 10 51 43 11 23 38 --- 17 51 30 53.2 311.2 3.1 97.3 1915 F 1 12957 Schedule for VLBA_LA (Code La ) 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 17 53 30 32.6 288.7 4.7 65.4 72 1 9 12957 11 25 37 11 29 37 --- 17 57 30 31.9 289.2 4.8 65.1 239 F 1 14553 11 31 36 1749+096 17 59 30 63.8 184.4 0.1 3.6 44 1 9 14553 11 31 36 11 35 36 --- 18 03 30 63.7 186.6 0.2 5.4 239 F 1 16149 11 37 35 3C303 18 05 30 51.1 310.8 3.4 94.2 31 1 10 16149 11 37 35 12 09 30 --- 18 37 30 46.1 310.7 3.9 87.8 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