COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: Exploratory follow up on a serendipitous discovery of a lens candidate Exp. Code: bk151 Schedule Version: 1.00 Processed by SCHED version: 6.05 June 2006 PI: Yuri Kovalev Address: MPIfR Auf dem Huegel 69, 53121 Bonn Germany Phone: +49-228-525-125 (w) / +49-228-850-7823 (h) EMAIL: ykovalev@mpifr-bonn.mpg.de Fax: +49-228-525-229 Phone during observation: +49-163-191-9961 (mobile) Observing mode: 2, 6, 18 cm continuum with corpol: 256-8-2 Notes: Two correlator passes are required on 0633-26A and 0633-26B Fringe finder: 0923+392 Schedule for VLBA_LA (Code La ) Page 2 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 7 Apr 2008 Day 98 --- Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 22 36 13 0923+392 04 37 30 33.9 63.2 -4.8 -68.7 0 1 1 0 22 36 03 22 39 42 --- 04 41 00 34.5 63.5 -4.8 -69.1 209 F 1 7 22 36 21 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 22 39 42 0923+392 04 41 00 34.5 63.5 -4.8 -69.1 -4 1 1 7 22 39 42 22 44 41 --- 04 46 00 35.4 63.9 -4.7 -69.7 295 F 1 17 22 39 42 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 22 44 41 0923+392 04 46 00 35.4 63.9 -4.7 -69.7 -4 1 1 17 22 44 41 22 48 11 --- 04 49 30 36.0 64.2 -4.6 -70.1 205 F 1 23 22 45 14 22 48 11 0633-263 04 49 30 23.0 154.2 -1.8 -23.2 -66 1 1 23 Stopped 22 49 51 --- 04 51 10 23.2 154.6 -1.7 -22.9 34 S 1 27 22 49 51 0633-263 04 51 10 23.2 154.6 -1.7 -22.9 -4 1 1 27 22 49 51 22 54 13 --- 04 55 33 23.5 155.6 -1.7 -22.0 258 F 1 35 22 50 09 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 22 54 13 0633-263 04 55 33 23.5 155.6 -1.7 -22.0 -4 1 1 35 22 54 13 23 02 42 --- 05 04 03 24.2 157.5 -1.5 -20.3 505 F 1 52 22 54 46 Schedule for VLBA_LA (Code La ) Page 3 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 7 Apr 2008 Day 98 --- Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 23 02 42 0633-263 05 04 03 24.2 157.5 -1.5 -20.3 -4 1 1 52 23 02 42 23 06 55 --- 05 08 17 24.5 158.5 -1.5 -19.4 249 F 1 60 23 02 42 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 23 06 55 0633-263 05 08 17 24.5 158.5 -1.5 -19.4 -4 1 1 60 23 06 55 23 11 17 --- 05 12 40 24.9 159.5 -1.4 -18.5 258 F 1 68 23 07 28 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 23 11 17 0633-263 05 12 40 24.9 159.5 -1.4 -18.5 -4 1 1 68 23 11 17 23 19 46 --- 05 21 10 25.4 161.5 -1.2 -16.7 505 F 1 85 23 11 50 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 23 19 46 0633-263 05 21 10 25.4 161.5 -1.2 -16.7 -4 1 1 85 23 19 46 23 23 59 --- 05 25 24 25.7 162.5 -1.2 -15.8 249 F 1 93 23 19 46 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 23 23 59 0633-263 05 25 24 25.7 162.5 -1.2 -15.8 -4 1 1 93 23 23 59 23 28 21 --- 05 29 47 26.0 163.6 -1.1 -14.8 258 F 1 101 23 24 32 Schedule for VLBA_LA (Code La ) Page 4 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 7 Apr 2008 Day 98 --- 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 23 28 21 0633-263 05 29 47 26.0 163.6 -1.1 -14.8 -4 1 1 101 23 28 21 23 36 50 --- 05 38 17 26.4 165.6 -1.0 -13.0 505 F 1 118 23 28 54 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 23 36 50 0633-263 05 38 17 26.4 165.6 -1.0 -13.0 -4 1 1 118 23 36 50 23 41 03 --- 05 42 31 26.6 166.7 -0.9 -12.0 249 F 1 126 23 36 50 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 23 41 03 0633-263 05 42 31 26.6 166.7 -0.9 -12.0 -4 1 1 126 23 41 03 23 45 26 --- 05 46 54 26.8 167.8 -0.8 -11.1 258 F 1 134 23 41 36 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 23 45 26 0633-263 05 46 54 26.8 167.8 -0.8 -11.1 -4 1 1 134 23 45 26 23 53 54 --- 05 55 24 27.1 169.9 -0.7 -9.2 505 F 1 151 23 45 59 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 23 53 54 0633-263 05 55 24 27.1 169.9 -0.7 -9.2 -4 1 1 151 23 53 54 23 58 07 --- 05 59 38 27.3 170.9 -0.6 -8.2 249 F 1 159 23 53 54 Schedule for VLBA_LA (Code La ) Page 5 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Start: Mon 7 Apr 2008 Day 98 -- Stop: Tue 8 Apr 2008 Day 99 --- Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 23 58 07 0633-263 05 59 38 27.3 170.9 -0.6 -8.2 -4 1 1 159 23 58 07 00 02 30 --- 06 04 01 27.4 172.0 -0.5 -7.2 258 F 1 167 23 58 40 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 00 02 30 0633-263 06 04 01 27.4 172.0 -0.5 -7.2 -4 1 1 167 00 02 30 00 10 58 --- 06 12 31 27.6 174.1 -0.4 -5.3 505 F 1 184 00 03 03 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 00 10 58 0633-263 06 12 31 27.6 174.1 -0.4 -5.3 -4 1 1 184 00 10 58 00 15 12 --- 06 16 45 27.7 175.2 -0.3 -4.3 249 F 1 192 00 10 58 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 00 15 12 0633-263 06 16 45 27.7 175.2 -0.3 -4.3 -4 1 1 192 00 15 12 00 19 34 --- 06 21 08 27.8 176.3 -0.2 -3.3 258 F 1 200 00 15 45 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 00 19 34 0633-263 06 21 08 27.8 176.3 -0.2 -3.3 -4 1 1 200 00 19 34 00 28 03 --- 06 29 38 27.9 178.5 -0.1 -1.4 505 F 1 217 00 20 07 Schedule for VLBA_LA (Code La ) Page 6 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Tue 8 Apr 2008 Day 99 --- Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 00 28 03 0633-263 06 29 38 27.9 178.5 -0.1 -1.4 -4 1 1 217 00 28 03 00 32 16 --- 06 33 52 27.9 179.5 0.0 -0.4 249 F 1 225 00 28 03 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 00 32 16 0633-263 06 33 52 27.9 179.5 0.0 -0.4 -4 1 1 225 00 32 16 00 36 38 --- 06 38 15 27.9 180.7 0.0 0.6 258 F 1 233 00 32 49 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 00 36 38 0633-263 06 38 15 27.9 180.7 0.0 0.6 -4 1 1 233 00 36 38 00 45 07 --- 06 46 45 27.8 182.8 0.2 2.5 505 F 1 250 00 37 11 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 00 45 07 0633-263 06 46 45 27.8 182.8 0.2 2.5 -4 1 1 250 00 45 07 00 49 20 --- 06 50 59 27.8 183.9 0.3 3.5 249 F 1 258 00 45 07 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 00 49 20 0633-263 06 50 59 27.8 183.9 0.3 3.5 -4 1 1 258 00 49 20 00 53 42 --- 06 55 22 27.7 185.0 0.3 4.5 258 F 1 266 00 49 53 Schedule for VLBA_LA (Code La ) Page 7 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Tue 8 Apr 2008 Day 99 --- 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 00 53 42 0633-263 06 55 22 27.7 185.0 0.3 4.5 -4 1 1 266 00 53 42 01 02 11 --- 07 03 52 27.5 187.1 0.5 6.4 505 F 1 283 00 54 15 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 01 02 11 0633-263 07 03 52 27.5 187.1 0.5 6.4 -4 1 1 283 01 02 11 01 06 24 --- 07 08 06 27.4 188.2 0.5 7.4 249 F 1 291 01 02 11 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 01 06 24 0633-263 07 08 06 27.4 188.2 0.5 7.4 -4 1 1 291 01 06 24 01 10 46 --- 07 12 29 27.3 189.3 0.6 8.4 258 F 1 299 01 06 57 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 01 10 46 0633-263 07 12 29 27.3 189.3 0.6 8.4 -4 1 1 299 01 10 46 01 19 15 --- 07 20 59 27.0 191.4 0.8 10.3 505 F 1 316 01 11 19 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 01 19 15 0633-263 07 20 59 27.0 191.4 0.8 10.3 -4 1 1 316 01 19 15 01 23 28 --- 07 25 13 26.8 192.4 0.8 11.2 249 F 1 324 01 19 15 Schedule for VLBA_LA (Code La ) Page 8 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Tue 8 Apr 2008 Day 99 --- Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 01 23 28 0633-263 07 25 13 26.8 192.4 0.8 11.2 -4 1 1 324 01 23 28 01 27 51 --- 07 29 36 26.6 193.5 0.9 12.2 258 F 1 332 01 24 01 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 01 27 51 0633-263 07 29 36 26.6 193.5 0.9 12.2 -4 1 1 332 01 27 51 01 36 19 --- 07 38 06 26.1 195.6 1.0 14.1 505 F 1 349 01 28 24 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 01 36 19 0633-263 07 38 06 26.1 195.6 1.0 14.1 -4 1 1 349 01 36 19 01 40 33 --- 07 42 20 25.9 196.6 1.1 15.0 249 F 1 357 01 36 19 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 01 40 33 0633-263 07 42 20 25.9 196.6 1.1 15.0 -4 1 1 357 01 40 33 01 44 55 --- 07 46 43 25.6 197.6 1.2 15.9 258 F 1 366 01 41 06 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 01 44 55 0633-263 07 46 43 25.6 197.6 1.2 15.9 -4 1 1 366 01 44 55 01 53 23 --- 07 55 13 25.1 199.7 1.3 17.7 505 F 1 382 01 45 28 Schedule for VLBA_LA (Code La ) Page 9 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Tue 8 Apr 2008 Day 99 --- Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 01 53 23 0633-263 07 55 13 25.1 199.7 1.3 17.7 -4 1 1 382 01 53 23 01 57 37 --- 07 59 27 24.8 200.7 1.4 18.6 249 F 1 390 01 53 23 Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 01 57 37 0633-263 07 59 27 24.8 200.7 1.4 18.6 -4 1 1 390 01 57 37 02 01 59 --- 08 03 50 24.5 201.7 1.5 19.5 258 F 1 399 01 58 10 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 02 01 59 0633-263 08 03 50 24.5 201.7 1.5 19.5 -4 1 1 399 02 01 59 02 10 28 --- 08 12 20 23.8 203.6 1.6 21.3 505 F 1 415 02 02 32 Next scan frequencies: 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 Next BBC frequencies: 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 02 10 28 0633-263 08 12 20 23.8 203.6 1.6 21.3 -4 1 1 415 02 10 28 02 14 41 --- 08 16 34 23.5 204.6 1.7 22.1 249 F 1 423 02 10 28 02 17 15 0923+392 08 19 09 76.0 71.5 -1.1 -98.0 43 1 1 423 02 17 05 02 20 45 --- 08 22 39 76.7 71.1 -1.1 -99.0 209 F 1 430 02 17 23 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 02 20 45 0923+392 08 22 39 76.7 71.1 -1.1 -99.0 -4 1 1 430 02 20 45 02 25 44 --- 08 27 39 77.7 70.3 -1.0 -100.5 295 F 1 440 02 20 45 Schedule for VLBA_LA (Code La ) Page 10 Exploratory follow up on a serendipitous discovery of a lens candidate 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. For disks, the footages are really the GBytes 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 ---------------------------------------------------------------------------------------- --- Tue 8 Apr 2008 Day 99 --- Next scan frequencies: 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 Next BBC frequencies: 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 02 25 44 0923+392 08 27 39 77.7 70.3 -1.0 -100.5 -4 1 1 440 02 25 44 02 29 14 --- 08 31 09 78.3 69.7 -0.9 -101.7 205 F 1 447 02 26 17 02 31 09 1328+307 08 33 05 28.8 71.5 -5.0 -63.2 11 1 1 447 02 30 59 02 36 08 --- 08 38 05 29.8 72.1 -4.9 -63.6 299 F 1 457 02 31 17 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/v6cm-256-8-2.set Matches group v6cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 5 Station: VLBA_LA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Speedup factor: 1.00 Disk used to record data. 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: 5 Setup file default. Used pcal sets: 1 LO sum= 4971.49 4971.49 4979.49 4979.49 4987.49 4987.49 4995.49 4995.49 BBC fr= 871.49 871.49 879.49 879.49 887.49 887.49 895.49 895.49 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_off Setup file: /home/filehost/cwalker/sched/setups/v2cm-256-8-2.set Matches group v2cm_d3 in /home/filehost/cwalker/sched/catalogs/freq.dat Fourth 2cm filter Setup group: 15 Station: VLBA_LA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Speedup factor: 1.00 Disk used to record data. 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: 14 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_off Setup file: /home/filehost/cwalker/sched/setups/v18cm-256-8-2.set Matches group v20cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 25 Station: VLBA_LA Total bit rate: 256 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Speedup factor: 1.00 Disk used to record data. 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 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= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 23 Setup file default. Used pcal sets: 1 LO sum= 1651.49 1651.49 1659.49 1659.49 1667.49 1667.49 1675.49 1675.49 BBC fr= 748.51 748.51 740.51 740.51 732.51 732.51 724.51 724.51 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_off SOURCE LIST -- Exploratory follow up on a serendipitous discovery of a lens candidate 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) * 0633-263 06 33 19.109504 * 06 35 20.163018 06 35 40.310915 0.00 J0635-2620 -26 18 18.33369 *-26 20 47.83847 -26 21 21.29822 0.00 From catalog imbedded in main SCHED input file. 3.414 scan hours, 147.414 baseline hours above horizon. J0927+3902 09 23 55.319214 * 09 27 03.013935 09 27 35.837488 0.00 * 0923+392 39 15 23.56646 * 39 02 20.85186 39 00 16.76292 0.00 4C39.25 From catalog imbedded in main SCHED input file. 2007c_astro Petrov catalog 0.399 scan hours, 15.976 baseline hours above horizon. J1331+3030 13 28 49.657756 * 13 31 08.288048 13 31 33.415154 0.00 * 1328+307 30 45 58.64059 * 30 30 32.95923 30 27 46.60934 0.00 3C286 From catalog imbedded in main SCHED input file. 2006a_astro Petrov catalog 0.083 scan hours, 2.992 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) 0633-263 85.9 0923+392 111.1 1328+307 141.9 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