COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: Small-separation CLASS lens candidates Exp. Code: BJ049C Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Neal Jackson Address: University of Manchester Jodrell Bank Observatory Macclesfield, Cheshire SK11 9DL U.K. Phone: +44 1477 572617 EMAIL: njj@jb.man.ac.uk Fax: +44 1477 571618 Phone during observation: +44 1477 572617 Observing mode: Continuum Notes: Schedule for VLBA_OV (Code Ov ) Page 2 Small-separation CLASS lens candidates 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) ---------------------------------------------------------------------------------------- --- Thu 29 Jan 2004 Day 29 --- Next scan frequencies: 4971.49 4979.49 4987.49 4995.49 Next BBC frequencies: 871.49 879.49 887.49 895.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 12 10 05 J1642+3948 12 49 22 45.0 67.9 -3.9 -73.7 0 1 1 0 12 10 05 12 20 04 --- 12 59 22 46.9 68.6 -3.7 -74.8 598 F 1 3989 12 20 04 J1457+0749 12 59 22 50.2 130.1 -2.0 -37.9 -47 1 1 3989 12 20 04 12 21 34 --- 13 00 52 50.4 130.6 -1.9 -37.6 43 F 1 4587 12 21 34 J1454+05 13 00 52 48.9 134.0 -1.9 -35.1 -9 1 1 4587 12 21 34 12 25 33 --- 13 04 52 49.5 135.3 -1.8 -34.3 230 F 1 6183 12 25 33 J1457+0749 13 04 52 51.0 131.8 -1.9 -36.8 -9 1 1 6183 12 25 33 12 27 03 --- 13 06 22 51.2 132.3 -1.9 -36.5 81 F 1 6781 12 27 03 J1454+05 13 06 22 49.7 135.7 -1.8 -33.9 -9 1 1 6781 12 27 03 12 31 02 --- 13 10 22 50.2 137.0 -1.7 -33.0 230 F 1 8377 12 31 02 J1457+0749 13 10 22 51.8 133.6 -1.8 -35.6 -9 1 1 8377 12 31 02 12 32 32 --- 13 11 52 52.0 134.1 -1.8 -35.2 81 F 1 8975 12 32 32 J1454+05 13 11 52 50.4 137.5 -1.7 -32.7 -9 1 1 8975 12 32 32 12 36 31 --- 13 15 52 51.0 138.8 -1.6 -31.8 230 F 1 10571 12 36 31 J1457+0749 13 15 52 52.6 135.4 -1.7 -34.3 -9 1 1 10571 12 36 31 12 38 01 --- 13 17 22 52.8 135.9 -1.7 -34.0 81 F 1 11169 12 38 01 J1454+05 13 17 22 51.2 139.4 -1.6 -31.4 -9 1 1 11169 12 38 01 12 42 00 --- 13 21 22 51.7 140.7 -1.5 -30.4 230 F 1 12765 12 42 00 J1457+0749 13 21 22 53.3 137.3 -1.6 -33.0 -9 1 1 12765 12 42 00 12 43 30 --- 13 22 52 53.5 137.8 -1.6 -32.6 80 F 1 13363 12 43 30 J1454+05 13 22 52 51.9 141.2 -1.5 -30.0 -9 1 1 13363 12 43 30 12 47 29 --- 13 26 52 52.4 142.7 -1.5 -29.0 230 F 1 14959 12 47 29 J1457+0749 13 26 52 54.1 139.3 -1.5 -31.6 -9 1 1 14959 12 47 29 12 48 59 --- 13 28 22 54.3 139.8 -1.5 -31.2 80 F 1 15557 12 48 59 J1454+05 13 28 22 52.5 143.2 -1.4 -28.6 -9 1 1 15557 12 48 59 12 52 58 --- 13 32 22 53.0 144.6 -1.4 -27.6 230 F 1 17153 Schedule for VLBA_OV (Code Ov ) Page 3 Small-separation CLASS lens candidates 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) ---------------------------------------------------------------------------------------- --- Thu 29 Jan 2004 Day 29 --- 12 52 58 J1457+0749 13 32 22 54.8 141.3 -1.4 -30.2 -10 1 2 17153 12 52 58 12 54 28 --- 13 33 52 55.0 141.8 -1.4 -29.8 80 R 1 16555 12 54 28 J1454+05 13 33 52 53.2 145.2 -1.3 -27.2 -10 1 2 16555 12 54 28 12 58 28 --- 13 37 52 53.6 146.7 -1.3 -26.0 230 R 1 14959 12 58 28 J1457+0749 13 37 52 55.4 143.3 -1.3 -28.7 -10 1 2 14959 12 58 28 12 59 57 --- 13 39 22 55.6 143.9 -1.3 -28.2 80 R 1 14361 12 59 57 J1454+05 13 39 22 53.8 147.3 -1.2 -25.6 -10 1 2 14361 12 59 57 13 03 57 --- 13 43 22 54.2 148.8 -1.2 -24.5 230 R 1 12765 13 03 57 J1457+0749 13 43 22 56.1 145.5 -1.2 -27.1 -10 1 2 12765 13 03 57 13 05 26 --- 13 44 52 56.2 146.1 -1.2 -26.6 80 R 1 12167 13 05 26 J1454+05 13 44 52 54.4 149.4 -1.2 -24.0 -10 1 2 12167 13 05 26 13 09 26 --- 13 48 52 54.8 151.0 -1.1 -22.8 230 R 1 10571 13 09 26 J1457+0749 13 48 52 56.7 147.7 -1.1 -25.4 -10 1 2 10571 13 09 26 13 10 55 --- 13 50 22 56.8 148.3 -1.1 -25.0 80 R 1 9973 13 10 55 J1454+05 13 50 22 54.9 151.5 -1.1 -22.4 -10 1 2 9973 13 10 55 13 14 55 --- 13 54 22 55.3 153.2 -1.0 -21.2 229 R 1 8377 13 16 54 J1457+0749 13 56 22 57.4 150.8 -1.0 -23.1 109 1 2 8377 13 16 54 13 18 24 --- 13 57 52 57.6 151.4 -1.0 -22.6 90 R 1 7779 13 20 24 J1454+05 13 59 52 55.8 155.4 -0.9 -19.4 110 1 2 7779 13 20 24 13 24 23 --- 14 03 52 56.1 157.1 -0.8 -18.1 239 R 1 6183 13 26 23 J1457+0749 14 05 52 58.3 154.9 -0.9 -19.9 109 1 2 6183 13 26 23 13 27 53 --- 14 07 22 58.4 155.6 -0.8 -19.4 90 R 1 5585 13 29 52 J1454+05 14 09 22 56.5 159.5 -0.7 -16.3 110 1 2 5585 13 29 52 13 33 52 --- 14 13 22 56.7 161.2 -0.7 -14.9 239 R 1 3989 13 35 51 J1457+0749 14 15 22 59.0 159.2 -0.7 -16.6 109 1 2 3989 13 35 51 13 37 21 --- 14 16 52 59.1 159.9 -0.7 -16.0 90 R 1 3391 13 39 21 J1454+05 14 18 52 57.1 163.6 -0.6 -13.0 110 1 2 3391 13 39 21 13 43 20 --- 14 22 52 57.3 165.4 -0.5 -11.6 239 R 1 1795 Schedule for VLBA_OV (Code Ov ) Page 4 Small-separation CLASS lens candidates 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) ---------------------------------------------------------------------------------------- --- Thu 29 Jan 2004 Day 29 --- 13 45 20 J1457+0749 14 24 52 59.6 163.7 -0.5 -13.0 109 1 2 1795 13 45 20 13 46 50 --- 14 26 22 59.7 164.4 -0.5 -12.5 90 R 1 1197 13 48 49 J1454+05 14 28 22 57.5 167.9 -0.4 -9.6 109 1 3 1197 13 48 49 13 52 49 --- 14 32 22 57.7 169.8 -0.4 -8.2 239 F 1 399 13 54 48 J1457+0749 14 34 22 60.1 168.3 -0.4 -9.4 109 1 3 399 13 54 48 13 56 18 --- 14 35 52 60.2 169.0 -0.4 -8.8 90 F 1 997 13 58 18 J1454+05 14 37 52 57.9 172.3 -0.3 -6.1 109 1 3 997 13 58 18 14 02 17 --- 14 41 52 58.0 174.2 -0.2 -4.6 239 F 1 2593 14 04 17 J1457+0749 14 43 52 60.4 173.0 -0.2 -5.6 109 1 3 2593 14 04 17 14 05 46 --- 14 45 22 60.4 173.7 -0.2 -5.0 90 F 1 3191 14 07 46 J1454+05 14 47 22 58.0 176.8 -0.1 -2.6 109 1 3 3191 14 07 46 14 11 45 --- 14 51 22 58.1 178.7 0.0 -1.1 239 F 1 4787 14 13 45 J1457+0749 14 53 22 60.6 177.8 -0.1 -1.8 109 1 3 4787 14 13 45 14 15 15 --- 14 54 52 60.6 178.5 0.0 -1.2 90 F 1 5385 14 17 15 J1454+05 14 56 52 58.1 181.2 0.0 1.0 109 1 3 5385 14 17 15 14 21 14 --- 15 00 52 58.0 183.1 0.1 2.5 239 F 1 6981 14 23 14 J1457+0749 15 02 52 60.6 182.5 0.1 2.0 109 1 3 6981 14 23 14 14 24 43 --- 15 04 22 60.5 183.3 0.1 2.7 90 F 1 7579 14 26 43 J1454+05 15 06 22 58.0 185.7 0.2 4.6 109 1 3 7579 14 26 43 14 30 42 --- 15 10 22 57.9 187.6 0.3 6.0 239 F 1 9175 14 32 42 J1457+0749 15 12 22 60.4 187.3 0.2 5.9 109 1 3 9175 14 32 42 14 34 12 --- 15 13 52 60.4 188.1 0.3 6.5 90 F 1 9773 14 36 11 J1454+05 15 15 52 57.7 190.1 0.4 8.1 108 1 3 9773 14 36 11 14 40 11 --- 15 19 52 57.5 192.0 0.4 9.5 239 F 1 11369 14 42 10 J1457+0749 15 21 52 60.1 192.0 0.4 9.6 109 1 3 11369 14 42 10 14 43 40 --- 15 23 22 60.0 192.7 0.4 10.2 90 F 1 11967 14 45 40 J1454+05 15 25 22 57.3 194.5 0.5 11.5 108 1 3 11967 14 45 40 14 49 39 --- 15 29 22 57.1 196.3 0.6 12.9 239 F 1 13563 Schedule for VLBA_OV (Code Ov ) Page 5 Small-separation CLASS lens candidates 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) ---------------------------------------------------------------------------------------- --- Thu 29 Jan 2004 Day 29 --- 14 51 39 J1457+0749 15 31 22 59.6 196.6 0.6 13.3 109 1 3 13563 14 51 39 14 53 09 --- 15 32 52 59.5 197.3 0.6 13.8 90 F 1 14161 14 55 08 J1454+05 15 34 52 56.8 198.7 0.7 14.8 108 1 3 14161 14 55 08 14 59 08 --- 15 38 52 56.5 200.4 0.7 16.2 239 F 1 15757 15 01 07 J1457+0749 15 40 52 59.0 201.1 0.7 16.8 109 1 3 15757 15 01 07 15 02 37 --- 15 42 22 58.9 201.7 0.7 17.3 90 F 1 16355 15 04 37 J1454+05 15 44 22 56.1 202.8 0.8 18.0 108 1 4 16355 15 04 37 15 08 36 --- 15 48 22 55.8 204.5 0.9 19.3 239 R 1 17249 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: v6cm-128-4-2-L.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: 2 Sample rate: 16.000 Number of channels: 4 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 Net SB= U U U U Pol. = LCP LCP LCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = C C C 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= 4971.49 4979.49 4987.49 4995.49 BBC fr= 871.49 879.49 887.49 895.49 Bandwd= 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 S1 S3 S1 S2 S3 S4 PCALXB2= S2 S4 S2 S4 M1 M2 M3 M4 PCALFR1= 510 510 6510 6510 0 0 0 0 PCALFR2= 510 510 6510 6510 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_auto SOURCE LIST -- Small-separation CLASS lens candidates 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) * J1642+3948 16 41 17.606214 * 16 42 58.809952 16 43 05.737103 39 54 10.81489 * 39 48 36.99395 39 47 51.00574 From catalog imbedded in main SCHED input file. * J1454+05 14 51 33.108942 * 14 54 02.536000 14 54 13.921152 05 32 06.75516 * 05 19 56.28000 05 18 48.90572 From catalog imbedded in main SCHED input file. * J1457+0749 14 55 10.829033 * 14 57 38.128708 14 57 49.339768 08 01 54.27957 * 07 49 54.71499 07 48 47.27717 From catalog imbedded in main SCHED input file. 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) J1642+3948 80.8 J1454+05 89.6 J1457+0749 89.6 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