COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: bw090 M87 fast movie. Walker, Ly, Junor, Hardee Exp. Code: bw090c Schedule Version: 1.00 Processed by SCHED version: 6.05 June 2006 PI: R.C. Walker Address: NRAO, P.O. Box O Socorro, NM 87801 USA Phone: +1-505-835-7247 (w) / +1-505-835-3972 (h) EMAIL: cwalker@nrao.edu Fax: +1-505-835-7027 Phone during observation: +1-505-835-7247 (w) / +1-505-835-3972 (h) Observing mode: VLBA Notes: COVER LETTER: This 10 session project is designed to provide a fast movie of jet component motions near the black hole in M87. It was proposed after the every-three-week movie made with BW088 was determined to be undersampled. Here is the key information from the time allocation email: PROPOSAL STATUS ( 12/31/2007 ): Approved for dynamic scheduling, high priority CURRENT TIME ALLOCATION: 10 times 10.0 hrs dynamically scheduled centered at LST 12.5 with 256 Mbits/sec recording Note request for 32 output spectral channels per baseband. ------------------------------------------------------------------------- Schedule for VLBA_HN (Code Hn ) Page 2 bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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 4 Feb 2008 Day 35 --- Next scan frequencies: 43119.49 43119.49 43135.49 43135.49 Next BBC frequencies: 719.49 719.49 735.49 735.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 05 47 22 OJ287 09 54 32 64.0 213.2 1.0 25.2 0 1 1 0 05 46 52 05 49 21 --- 09 56 32 63.8 214.1 1.0 25.9 120 F 1 5 05 47 10 05 51 25 3C274 09 58 36 45.1 121.3 -2.5 -39.8 56 1 1 5 05 50 55 06 11 21 --- 10 18 36 48.1 126.8 -2.2 -36.9 1197 F 1 44 05 51 13 06 13 27 OJ287 10 20 41 61.0 224.8 1.4 33.3 54 1 1 44 06 12 57 06 15 27 --- 10 22 41 60.7 225.6 1.5 33.8 120 F 1 49 06 13 15 06 17 33 3C274 10 24 48 49.0 128.7 -2.1 -35.8 55 1 1 49 06 17 03 06 37 29 --- 10 44 48 51.7 135.0 -1.8 -32.0 1197 F 1 89 06 17 21 06 38 13 3C279 10 45 32 32.9 140.1 -2.2 -28.2 0 1 1 89 06 37 43 06 40 13 --- 10 47 32 33.1 140.6 -2.2 -27.8 120 F 1 94 06 38 01 06 40 57 3C274 10 48 16 52.2 136.2 -1.7 -31.2 0 1 1 94 06 40 27 07 00 53 --- 11 08 16 54.5 143.4 -1.4 -26.6 1197 F 1 133 06 40 45 07 02 52 OJ287 11 10 15 53.7 241.7 2.2 43.3 47 1 1 133 07 02 22 07 04 52 --- 11 12 15 53.4 242.3 2.3 43.6 120 F 1 138 07 02 40 07 06 49 3C274 11 14 12 55.2 145.7 -1.3 -25.0 47 1 1 138 07 06 19 07 11 48 --- 11 19 12 55.7 147.6 -1.2 -23.7 299 F 1 149 07 06 37 07 11 48 M84 11 19 12 56.7 149.6 -1.1 -22.3 -8 1 1 149 07 11 48 07 12 28 --- 11 19 52 56.7 149.9 -1.1 -22.1 32 F 1 150 07 11 48 07 12 28 3C274 11 19 52 55.7 147.9 -1.2 -23.5 -8 1 1 150 07 12 28 07 12 58 --- 11 20 22 55.8 148.1 -1.2 -23.3 22 F 1 151 07 12 28 07 12 58 M84 11 20 22 56.8 150.1 -1.1 -22.0 -8 1 1 151 07 12 58 07 13 38 --- 11 21 02 56.8 150.3 -1.1 -21.8 32 F 1 152 07 12 58 07 13 38 3C274 11 21 02 55.8 148.3 -1.2 -23.2 -8 1 1 152 07 13 38 07 14 08 --- 11 21 32 55.9 148.5 -1.2 -23.0 22 F 1 153 07 13 38 07 14 08 M84 11 21 32 56.9 150.6 -1.1 -21.7 -8 1 1 153 07 14 08 07 14 48 --- 11 22 12 56.9 150.8 -1.1 -21.5 32 F 1 154 07 14 08 Schedule for VLBA_HN (Code Hn ) Page 3 bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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 4 Feb 2008 Day 35 --- 07 14 48 3C274 11 22 12 56.0 148.8 -1.2 -22.8 -8 1 1 154 07 14 48 07 15 18 --- 11 22 42 56.0 149.0 -1.1 -22.7 22 F 1 155 07 14 48 07 15 18 M84 11 22 42 57.0 151.0 -1.0 -21.3 -8 1 1 155 07 15 18 07 15 58 --- 11 23 22 57.0 151.3 -1.0 -21.1 32 F 1 157 07 15 18 07 16 06 3C274 11 23 31 56.1 149.3 -1.1 -22.5 1 1 1 157 07 15 58 07 21 06 --- 11 28 31 56.5 151.4 -1.0 -21.0 299 F 1 167 07 15 58 07 23 05 3C279 11 30 31 37.5 152.6 -1.4 -19.8 76 1 1 167 07 22 35 07 25 05 --- 11 32 31 37.6 153.2 -1.4 -19.4 120 F 1 171 07 22 53 07 25 50 3C274 11 33 16 56.9 153.4 -1.0 -19.6 0 1 1 171 07 25 20 07 45 46 --- 11 53 16 58.3 162.1 -0.6 -13.3 1197 F 1 211 07 25 38 07 47 19 OJ287 11 54 49 46.1 253.0 3.0 48.2 26 1 1 211 07 46 49 07 49 19 --- 11 56 49 45.8 253.5 3.0 48.4 120 F 1 216 07 47 07 07 50 54 3C274 11 58 24 58.6 164.5 -0.5 -11.6 29 1 1 216 07 50 24 08 10 50 --- 12 18 24 59.3 173.8 -0.2 -4.6 1197 F 1 255 07 50 42 08 11 34 3C279 12 19 08 40.5 167.7 -0.6 -9.0 0 1 1 255 08 11 04 08 13 34 --- 12 21 08 40.6 168.3 -0.6 -8.5 120 F 1 260 08 11 22 08 14 18 3C274 12 21 53 59.3 175.5 -0.2 -3.4 1 1 1 260 08 13 48 08 34 15 --- 12 41 53 59.3 185.1 0.2 3.8 1197 F 1 300 08 14 06 08 36 00 OJ287 12 43 38 37.4 263.0 3.8 50.7 47 1 1 300 08 35 30 08 38 00 --- 12 45 38 37.0 263.4 3.8 50.7 120 F 1 305 08 35 48 08 39 49 3C274 12 47 28 59.2 187.7 0.3 5.8 53 1 1 305 08 39 19 08 59 46 --- 13 07 28 58.4 197.1 0.6 12.7 1197 F 1 344 08 39 37 09 00 30 3C279 13 08 12 41.2 183.8 0.2 2.8 4 1 1 344 09 00 00 09 02 30 --- 13 10 12 41.1 184.5 0.2 3.3 120 F 1 349 09 00 18 09 03 14 3C274 13 10 57 58.2 198.6 0.7 13.9 4 1 1 349 09 02 44 09 08 13 --- 13 15 57 57.9 200.9 0.7 15.5 299 F 1 360 09 03 02 09 08 13 M84 13 15 57 58.0 203.7 0.8 17.6 -8 1 1 360 09 08 13 09 08 53 --- 13 16 37 57.9 204.0 0.9 17.8 32 F 1 361 09 08 13 Schedule for VLBA_HN (Code Hn ) Page 4 bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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 4 Feb 2008 Day 35 --- 09 08 53 3C274 13 16 37 57.9 201.2 0.8 15.7 -8 1 1 361 09 08 53 09 09 23 --- 13 17 07 57.8 201.4 0.8 15.9 22 F 1 362 09 08 53 09 09 23 M84 13 17 07 57.9 204.2 0.9 17.9 -8 1 1 362 09 09 23 09 10 03 --- 13 17 47 57.9 204.5 0.9 18.1 32 F 1 363 09 09 23 09 10 03 3C274 13 17 47 57.8 201.7 0.8 16.1 -8 1 1 363 09 10 03 09 10 33 --- 13 18 17 57.8 201.9 0.8 16.2 22 F 1 364 09 10 03 09 10 33 M84 13 18 17 57.8 204.7 0.9 18.3 -8 1 1 364 09 10 33 09 11 13 --- 13 18 57 57.8 205.0 0.9 18.5 32 F 1 365 09 10 33 09 11 13 3C274 13 18 57 57.7 202.2 0.8 16.4 -8 1 1 365 09 11 13 09 11 43 --- 13 19 27 57.7 202.4 0.8 16.6 22 F 1 366 09 11 13 09 11 43 M84 13 19 27 57.7 205.2 0.9 18.6 -8 1 1 366 09 11 43 09 12 23 --- 13 20 07 57.7 205.5 0.9 18.9 32 F 1 368 09 11 43 09 12 32 3C274 13 20 16 57.6 202.8 0.8 16.9 1 1 1 368 09 12 23 09 17 31 --- 13 25 16 57.3 204.9 0.9 18.4 299 F 1 378 09 12 23 09 19 31 BLANKSKY 13 27 16 57.3 205.9 0.9 19.1 113 1 1 378 09 19 01 09 21 30 --- 13 29 16 57.1 206.7 1.0 19.7 120 F 1 382 09 19 19 09 23 21 OJ287 13 31 07 28.7 271.4 4.6 51.2 48 1 1 382 09 22 51 09 25 21 --- 13 33 07 28.4 271.7 4.6 51.2 120 F 1 387 09 23 09 09 27 11 3C274 13 34 57 56.4 209.0 1.1 21.3 47 1 1 387 09 26 41 09 47 07 --- 13 54 57 54.5 216.9 1.4 26.7 1197 F 1 427 09 26 59 09 47 52 3C279 13 55 41 39.4 199.2 1.0 14.0 8 1 1 427 09 47 22 09 49 51 --- 13 57 41 39.3 199.8 1.0 14.4 120 F 1 432 09 47 40 09 50 36 3C274 13 58 26 54.1 218.2 1.5 27.6 9 1 1 432 09 50 06 10 10 32 --- 14 18 26 51.6 225.2 1.8 32.1 1197 F 1 471 09 50 24 10 12 24 OJ287 14 20 17 19.8 279.4 5.4 50.3 42 1 1 471 10 11 54 10 14 23 --- 14 22 17 19.4 279.7 5.4 50.2 120 F 1 476 10 12 12 10 16 13 3C274 14 24 07 50.9 227.1 1.9 33.3 41 1 1 476 10 15 43 10 36 10 --- 14 44 07 48.1 233.2 2.2 36.9 1197 F 1 516 10 16 01 Schedule for VLBA_HN (Code Hn ) Page 5 bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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 4 Feb 2008 Day 35 --- 10 36 54 3C279 14 44 52 35.4 213.7 1.8 24.1 13 1 1 516 10 36 24 10 38 54 --- 14 46 52 35.2 214.3 1.8 24.5 120 F 1 520 10 36 42 10 39 38 3C274 14 47 36 47.6 234.2 2.3 37.4 14 1 1 520 10 39 08 10 59 35 --- 15 07 36 44.5 239.7 2.6 40.3 1197 F 1 560 10 39 26 11 01 41 OJ287 15 09 43 11.0 287.3 6.2 48.1 53 1 1 560 11 01 11 11 03 40 --- 15 11 43 10.6 287.6 6.3 48.0 120 F 1 565 11 01 29 11 05 46 3C274 15 13 49 43.5 241.3 2.7 41.1 54 1 1 565 11 05 16 11 10 46 --- 15 18 49 42.7 242.5 2.8 41.7 299 F 1 575 11 05 34 11 10 46 M84 15 18 49 42.1 244.4 2.9 42.6 -7 1 1 575 11 10 46 11 11 26 --- 15 19 29 42.0 244.6 2.9 42.7 33 F 1 577 11 10 46 11 11 26 3C274 15 19 29 42.6 242.7 2.8 41.8 -7 1 1 577 11 11 26 11 11 55 --- 15 19 59 42.5 242.8 2.8 41.8 23 F 1 578 11 11 26 11 11 55 M84 15 19 59 41.9 244.7 2.9 42.8 -7 1 1 578 11 11 55 11 12 35 --- 15 20 39 41.8 244.9 2.9 42.8 33 F 1 579 11 11 55 11 12 35 3C274 15 20 39 42.4 243.0 2.8 41.9 -7 1 1 579 11 12 35 11 13 05 --- 15 21 09 42.3 243.1 2.8 42.0 23 F 1 580 11 12 35 11 13 05 M84 15 21 09 41.7 245.0 2.9 42.9 -7 1 1 580 11 13 05 11 13 45 --- 15 21 49 41.6 245.1 2.9 42.9 33 F 1 581 11 13 05 11 13 45 3C274 15 21 49 42.2 243.3 2.8 42.0 -7 1 1 581 11 13 45 11 14 15 --- 15 22 19 42.1 243.4 2.9 42.1 23 F 1 582 11 13 45 11 14 15 M84 15 22 19 41.5 245.2 2.9 43.0 -7 1 1 582 11 14 15 11 14 55 --- 15 22 59 41.4 245.4 3.0 43.1 33 F 1 584 11 14 15 11 15 04 3C274 15 23 08 42.0 243.6 2.9 42.2 2 1 1 584 11 14 55 11 20 03 --- 15 28 08 41.2 244.8 2.9 42.7 299 F 1 593 11 14 55 11 20 47 3C279 15 28 52 30.3 225.2 2.5 31.5 16 1 1 593 11 20 17 11 22 46 --- 15 30 52 30.0 225.7 2.6 31.8 120 F 1 598 11 20 35 11 23 30 3C274 15 31 35 40.6 245.6 3.0 43.1 16 1 1 598 11 23 00 11 43 27 --- 15 51 35 37.2 250.1 3.3 44.8 1197 F 1 638 11 23 18 Schedule for VLBA_HN (Code Hn ) Page 6 bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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 4 Feb 2008 Day 35 --- 11 51 32 3C274 15 59 43 35.8 251.9 3.5 45.4 477 1 1 638 11 51 02 12 11 29 --- 16 19 43 32.3 256.0 3.8 46.6 1197 F 1 677 11 51 20 12 12 10 3C279 16 20 23 22.9 237.0 3.4 38.1 16 1 1 677 12 11 40 12 14 10 --- 16 22 23 22.6 237.4 3.4 38.3 120 F 1 682 12 11 58 12 14 50 3C274 16 23 04 31.7 256.6 3.9 46.8 16 1 1 682 12 14 20 12 34 47 --- 16 43 04 28.1 260.5 4.2 47.7 1197 F 1 722 12 14 38 12 35 26 3C279 16 43 43 19.3 241.8 3.8 40.4 15 1 1 722 12 34 47 12 37 26 --- 16 45 43 18.9 242.2 3.8 40.6 120 F 1 727 12 34 47 12 38 05 3C274 16 46 22 27.5 261.1 4.3 47.8 16 1 1 727 12 37 26 12 58 01 --- 17 06 22 23.9 264.7 4.6 48.3 1197 F 1 767 12 37 26 12 58 41 3C279 17 07 02 15.4 246.4 4.2 42.4 17 1 1 767 12 58 01 13 00 41 --- 17 09 02 15.1 246.8 4.2 42.6 120 F 1 772 12 58 01 13 01 21 BLANKSKY 17 09 43 23.4 265.4 4.6 48.4 18 1 1 772 13 00 51 13 03 21 --- 17 11 43 23.0 265.8 4.7 48.4 120 F 1 777 13 01 09 13 03 27 3C274 17 11 49 22.9 265.7 4.7 48.4 0 1 1 777 13 03 21 13 08 26 --- 17 16 49 22.0 266.5 4.8 48.4 299 F 1 787 13 03 21 13 08 26 M84 17 16 49 21.2 267.9 4.9 48.6 -7 1 1 787 13 08 26 13 09 06 --- 17 17 29 21.1 268.1 4.9 48.6 32 F 1 788 13 08 26 13 09 06 3C274 17 17 29 21.8 266.7 4.8 48.4 -7 1 1 788 13 09 06 13 09 36 --- 17 17 59 21.7 266.8 4.8 48.4 23 F 1 789 13 09 06 13 09 36 M84 17 17 59 21.0 268.1 4.9 48.6 -7 1 1 789 13 09 36 13 10 16 --- 17 18 39 20.9 268.3 4.9 48.6 32 F 1 790 13 09 36 13 10 16 3C274 17 18 39 21.6 266.9 4.8 48.4 -7 1 1 790 13 10 16 13 10 46 --- 17 19 09 21.5 267.0 4.8 48.5 23 F 1 791 13 10 16 13 10 46 M84 17 19 09 20.8 268.4 4.9 48.6 -7 1 1 791 13 10 46 13 11 26 --- 17 19 49 20.7 268.5 4.9 48.6 32 F 1 792 13 10 46 13 11 26 3C274 17 19 49 21.4 267.1 4.8 48.5 -7 1 1 792 13 11 26 13 11 56 --- 17 20 19 21.3 267.2 4.8 48.5 23 F 1 793 13 11 26 Schedule for VLBA_HN (Code Hn ) Page 7 bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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 4 Feb 2008 Day 35 --- 13 11 56 M84 17 20 19 20.6 268.6 4.9 48.6 -7 1 1 793 13 11 56 13 12 35 --- 17 20 59 20.5 268.7 4.9 48.7 32 F 1 795 13 11 56 13 12 44 3C274 17 21 08 21.2 267.3 4.8 48.5 1 1 1 795 13 12 35 13 17 43 --- 17 26 08 20.3 268.2 4.9 48.5 299 F 1 805 13 12 35 13 19 43 3C274 17 28 08 19.9 268.5 4.9 48.5 113 1 1 805 13 19 13 13 39 40 --- 17 48 08 16.2 271.9 5.3 48.5 1197 F 1 844 13 19 31 13 43 08 3C274 17 51 37 15.6 272.5 5.3 48.5 201 1 1 844 13 42 38 14 03 05 --- 18 11 37 11.9 275.8 5.7 48.2 1197 F 1 884 13 42 56 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bw088.set Matches group v7mm_c8 in /users/cwalker/sched/catalogs/freq.dat Setup group: 2 Station: VLBA_HN Total bit rate: 256 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 Speedup factor: 1.00 Disk used to record data. 1st LO= 42400.00 42400.00 42400.00 42400.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.6 11.6 The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 43119.49 43119.49 43135.49 43135.49 BBC fr= 719.49 719.49 735.49 735.49 Bandwd= 16.000 16.000 16.000 16.000 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 13510 13510 0 0 0 0 PCALFR2= 510 510 13510 13510 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_off SOURCE LIST -- bw090 M87 fast movie. Walker, Ly, Junor, Hardee 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) * BLANKSKY 12 28 17.595540 * 12 30 49.423381 12 31 15.479103 0.00 12 50 01.74793 * 12 33 28.04383 12 30 33.01113 0.00 From catalog imbedded in main SCHED input file. Blank sky 10 arcmin from M87 0.066 scan hours, 2.992 baseline hours above horizon. J0854+2006 08 51 57.250618 * 08 54 48.874930 08 55 18.863821 0.21 0851+202 20 17 58.41741 * 20 06 30.64086 20 04 35.52236 0.40 J0854+20 /users/cwalker/sched/catalogs/sources.vlba * OJ287 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.332 scan hours, 13.230 baseline hours above horizon. J1225+1253 12 22 31.582015 * 12 25 03.743331 12 25 29.885828 0.32 * M84 13 09 49.76862 * 12 53 13.13923 12 50 17.76457 0.31 /users/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.222 scan hours, 6.951 baseline hours above horizon. J1230+1223 12 28 17.569279 * 12 30 49.423381 12 31 15.481626 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 20 33.05458 0.20 * 3C274 /users/cwalker/sched/catalogs/sources.vlba J1230+12 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 7.853 scan hours, 300.164 baseline hours above horizon. J1256-0547 12 53 35.831291 * 12 56 11.166559 12 56 37.524515 0.20 1253-055 -05 31 07.99586 *-05 47 21.52472 -05 50 08.62470 0.30 * 3C279 /users/cwalker/sched/catalogs/sources.vlba J1256-05 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.499 scan hours, 17.186 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) BLANKSKY 131.2 OJ287 174.9 M84 132.6 3C274 131.2 3C279 119.7 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