COVER INFORMATION Station: VLBA_MK (Code Mk ) 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_MK (Code Mk ) 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: 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 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 22 48 11 0633-263 01 32 39 3.3 119.6 -5.1 -66.0 0 1 1 0 Stopped 22 49 51 --- 01 34 19 3.6 119.7 -5.0 -65.8 100 S 1 4 22 49 51 0633-263 01 34 19 3.6 119.7 -5.0 -65.8 -4 1 1 4 22 49 51 22 54 13 --- 01 38 42 4.5 120.1 -4.9 -65.3 258 F 1 12 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 01 38 42 4.5 120.1 -4.9 -65.3 -4 1 1 12 22 54 13 23 02 42 --- 01 47 12 6.2 120.9 -4.8 -64.3 505 F 1 28 22 54 46 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 01 47 12 6.2 120.9 -4.8 -64.3 -4 1 1 28 23 02 42 23 06 55 --- 01 51 26 7.1 121.3 -4.7 -63.7 249 F 1 37 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 01 51 26 7.1 121.3 -4.7 -63.7 -4 1 1 37 23 06 55 23 11 17 --- 01 55 49 8.0 121.8 -4.7 -63.2 258 F 1 45 23 07 28 Schedule for VLBA_MK (Code Mk ) 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: 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 01 55 49 8.0 121.8 -4.7 -63.2 -4 1 1 45 23 11 17 23 19 46 --- 02 04 19 9.7 122.7 -4.5 -62.1 505 F 1 61 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 02 04 19 9.7 122.7 -4.5 -62.1 -4 1 1 61 23 19 46 23 23 59 --- 02 08 33 10.5 123.1 -4.5 -61.6 249 F 1 70 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 02 08 33 10.5 123.1 -4.5 -61.6 -4 1 1 70 23 23 59 23 28 21 --- 02 12 56 11.3 123.6 -4.4 -61.0 258 F 1 78 23 24 32 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 02 12 56 11.3 123.6 -4.4 -61.0 -4 1 1 78 23 28 21 23 36 50 --- 02 21 26 13.0 124.6 -4.2 -59.8 505 F 1 94 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 02 21 26 13.0 124.6 -4.2 -59.8 -4 1 1 94 23 36 50 23 41 03 --- 02 25 40 13.8 125.1 -4.2 -59.3 249 F 1 103 23 36 50 Schedule for VLBA_MK (Code Mk ) 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: 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 02 25 40 13.8 125.1 -4.2 -59.3 -4 1 1 103 23 41 03 23 45 26 --- 02 30 03 14.7 125.6 -4.1 -58.6 258 F 1 111 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 02 30 03 14.7 125.6 -4.1 -58.6 -4 1 1 111 23 45 26 23 53 54 --- 02 38 33 16.3 126.6 -4.0 -57.4 505 F 1 128 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 02 38 33 16.3 126.6 -4.0 -57.4 -4 1 1 128 23 53 54 23 58 07 --- 02 42 47 17.1 127.2 -3.9 -56.8 249 F 1 136 23 53 54 --- 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 02 42 47 17.1 127.2 -3.9 -56.8 -4 1 1 136 23 58 07 00 02 30 --- 02 47 10 17.9 127.7 -3.8 -56.1 258 F 1 144 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 02 47 10 17.9 127.7 -3.8 -56.1 -4 1 1 144 00 02 30 00 10 58 --- 02 55 40 19.5 128.9 -3.7 -54.8 505 F 1 161 00 03 03 Schedule for VLBA_MK (Code Mk ) 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 ---------------------------------------------------------------------------------------- --- 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 10 58 0633-263 02 55 40 19.5 128.9 -3.7 -54.8 -4 1 1 161 00 10 58 00 15 12 --- 02 59 54 20.2 129.5 -3.6 -54.2 249 F 1 169 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 02 59 54 20.2 129.5 -3.6 -54.2 -4 1 1 169 00 15 12 00 19 34 --- 03 04 17 21.0 130.1 -3.5 -53.5 258 F 1 177 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 03 04 17 21.0 130.1 -3.5 -53.5 -4 1 1 177 00 19 34 00 28 03 --- 03 12 47 22.5 131.3 -3.4 -52.0 505 F 1 194 00 20 07 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 03 12 47 22.5 131.3 -3.4 -52.0 -4 1 1 194 00 28 03 00 32 16 --- 03 17 01 23.3 132.0 -3.3 -51.3 249 F 1 202 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 03 17 01 23.3 132.0 -3.3 -51.3 -4 1 1 202 00 32 16 00 36 38 --- 03 21 24 24.0 132.6 -3.2 -50.6 258 F 1 210 00 32 49 Schedule for VLBA_MK (Code Mk ) 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: 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 03 21 24 24.0 132.6 -3.2 -50.6 -4 1 1 210 00 36 38 00 45 07 --- 03 29 54 25.5 134.0 -3.1 -49.1 505 F 1 227 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 03 29 54 25.5 134.0 -3.1 -49.1 -4 1 1 227 00 45 07 00 49 20 --- 03 34 08 26.2 134.7 -3.0 -48.3 249 F 1 235 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 03 34 08 26.2 134.7 -3.0 -48.3 -4 1 1 235 00 49 20 00 53 42 --- 03 38 31 26.9 135.4 -3.0 -47.5 258 F 1 243 00 49 53 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 03 38 31 26.9 135.4 -3.0 -47.5 -4 1 1 243 00 53 42 01 02 11 --- 03 47 01 28.3 136.9 -2.8 -45.8 505 F 1 260 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 03 47 01 28.3 136.9 -2.8 -45.8 -4 1 1 260 01 02 11 01 06 24 --- 03 51 15 29.0 137.7 -2.7 -45.0 249 F 1 268 01 02 11 Schedule for VLBA_MK (Code Mk ) 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: 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 03 51 15 29.0 137.7 -2.7 -45.0 -4 1 1 268 01 06 24 01 10 46 --- 03 55 38 29.7 138.5 -2.7 -44.1 258 F 1 276 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 03 55 38 29.7 138.5 -2.7 -44.1 -4 1 1 276 01 10 46 01 19 15 --- 04 04 08 31.0 140.1 -2.5 -42.4 505 F 1 293 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 04 04 08 31.0 140.1 -2.5 -42.4 -4 1 1 293 01 19 15 01 23 28 --- 04 08 22 31.6 140.9 -2.5 -41.5 249 F 1 301 01 19 15 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 04 08 22 31.6 140.9 -2.5 -41.5 -4 1 1 301 01 23 28 01 27 51 --- 04 12 45 32.3 141.8 -2.4 -40.5 258 F 1 309 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 04 12 45 32.3 141.8 -2.4 -40.5 -4 1 1 309 01 27 51 01 36 19 --- 04 21 15 33.5 143.5 -2.2 -38.6 505 F 1 326 01 28 24 Schedule for VLBA_MK (Code Mk ) 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: 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 04 21 15 33.5 143.5 -2.2 -38.6 -4 1 1 326 01 36 19 01 40 33 --- 04 25 29 34.1 144.4 -2.2 -37.7 249 F 1 334 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 04 25 29 34.1 144.4 -2.2 -37.7 -4 1 1 334 01 40 33 01 44 55 --- 04 29 52 34.7 145.4 -2.1 -36.6 258 F 1 342 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 04 29 52 34.7 145.4 -2.1 -36.6 -4 1 1 342 01 44 55 01 53 23 --- 04 38 22 35.8 147.3 -2.0 -34.6 505 F 1 359 01 45 28 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 04 38 22 35.8 147.3 -2.0 -34.6 -4 1 1 359 01 53 23 01 57 37 --- 04 42 36 36.3 148.2 -1.9 -33.6 249 F 1 367 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 04 42 36 36.3 148.2 -1.9 -33.6 -4 1 1 367 01 57 37 02 01 59 --- 04 46 59 36.8 149.2 -1.8 -32.5 258 F 1 375 01 58 10 Schedule for VLBA_MK (Code Mk ) 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: 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 04 46 59 36.8 149.2 -1.8 -32.5 -4 1 1 375 02 01 59 02 10 28 --- 04 55 29 37.8 151.3 -1.7 -30.3 505 F 1 392 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 04 55 29 37.8 151.3 -1.7 -30.3 -4 1 1 392 02 10 28 02 14 41 --- 04 59 43 38.3 152.3 -1.6 -29.2 249 F 1 400 02 10 28 02 17 15 0923+392 05 02 18 30.5 55.6 -4.4 -88.3 84 1 1 400 02 17 05 02 20 45 --- 05 05 48 31.1 55.7 -4.4 -88.8 209 F 1 407 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 05 05 48 31.1 55.7 -4.4 -88.8 -4 1 1 407 02 20 45 02 25 44 --- 05 10 48 32.1 55.7 -4.3 -89.6 295 F 1 417 02 20 45 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 05 10 48 32.1 55.7 -4.3 -89.6 -4 1 1 417 02 25 44 02 29 14 --- 05 14 18 32.8 55.7 -4.2 -90.2 205 F 1 423 02 26 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/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: 30 Station: VLBA_MK 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: 28 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 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: 20 Station: VLBA_MK 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: 29 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/v6cm-256-8-2.set Matches group v6cm_2 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 10 Station: VLBA_MK 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: 30 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 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