COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: bw082 M87 movie pilot. Walker, Ly, Junor, Hardee Exp. Code: bw082e Schedule Version: 1.00 Processed by SCHED version: 6.04 March 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: Special note for this session: The third run of this sequence was seriously degraded so the program committee has allowed me to get a second 3-day sequence which I will do in conjunction with the 12-16 day observation. The first of that pair will be April 18. The second should be on April 21. Normal cover letter for this project: This 6 session project samples different possible frame rates for a 7mm movie of M87. It is needed prior to full movie observations because the rate of changes near the core is not known. It is likely that they have been severly undersampled by previous observations. Each session will use the same schedule. The sessions should fall in the following windows (days) after the first: 0, 3, 6, 12-16, 31-39, 80-100. The program committee has asked me to coordinate with Phillip Hicks on the scheduling. I will do so. I propose to use long range forcasts to identify a 6 day window in which to start, and then, at 12, 31, and 80 days, identify a day within the 5, 9, and 21 day windows that follow in which to do a session. Here is the key information from the time allocation email: ------------------ PROPOSAL STATUS ( 01/06/05 ): Approved for dynamic scheduling, high priority Proposal Selection Committee - December 3, 2004: We ask Phillip Hicks to seek permission from Craig Walker before starting the observing sequence, rather than having Phillip be responsible for making the long-term weather forecast. CURRENT TIME ALLOCATION: 6 times 10.0 hrs dynamically scheduled centered at LST 12.5 with 128 Mbits/sec recording --------------------- I apologize for the long delay in starting this project, but it will take my attention once started and, for personal reasons, I did not feel I was in a position to provide that over the last year. ------------------------------------------------------------------------- Schedule for VLBA_FD (Code Fd ) Page 2 bw082 M87 movie pilot. 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 ---------------------------------------------------------------------------------------- --- Fri 21 Apr 2006 Day 111 --- Next scan frequencies: 43127.49 43127.49 43135.49 43135.49 Next BBC frequencies: 727.49 727.49 735.49 735.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 00 46 38 OJ287 07 46 42 71.3 120.3 -1.1 -52.2 0 1 1 0 00 46 08 00 54 37 --- 07 54 42 72.8 124.2 -1.0 -49.3 479 F 1 8 00 46 31 00 56 41 3C274 07 56 46 24.6 89.8 -4.6 -61.7 22 1 1 8 00 56 11 01 11 38 --- 08 11 46 27.8 91.8 -4.3 -61.7 898 F 1 23 00 56 34 01 12 21 3C279 08 12 29 13.1 105.0 -4.7 -56.7 8 1 1 23 01 11 38 01 14 21 --- 08 14 29 13.5 105.3 -4.7 -56.5 120 F 1 26 01 11 38 01 15 05 3C274 08 15 13 28.5 92.2 -4.3 -61.7 7 1 1 26 01 14 21 01 30 02 --- 08 30 13 31.8 94.2 -4.0 -61.5 898 F 1 41 01 14 21 01 30 46 3C279 08 30 57 16.9 107.7 -4.4 -55.5 8 1 1 41 01 30 02 01 32 45 --- 08 32 57 17.3 108.0 -4.4 -55.4 120 F 1 44 01 30 02 01 33 29 3C274 08 33 41 32.5 94.7 -4.0 -61.4 8 1 1 44 01 32 45 01 48 27 --- 08 48 41 35.7 96.9 -3.7 -61.0 898 F 1 59 01 32 45 01 49 11 3C279 08 49 25 20.7 110.5 -4.1 -54.1 8 1 1 59 01 48 27 01 51 10 --- 08 51 25 21.1 110.8 -4.1 -54.0 120 F 1 61 01 48 27 01 51 55 3C274 08 52 09 36.4 97.4 -3.7 -60.9 8 1 1 61 01 51 10 02 06 52 --- 09 07 09 39.6 99.7 -3.4 -60.3 898 F 1 77 01 51 10 02 07 36 3C279 09 07 53 24.4 113.4 -3.8 -52.5 8 1 1 77 02 06 52 02 09 36 --- 09 09 53 24.8 113.8 -3.8 -52.3 120 F 1 79 02 06 52 02 10 21 3C274 09 10 38 40.4 100.2 -3.3 -60.1 7 1 1 79 02 09 36 02 25 18 --- 09 25 38 43.5 102.7 -3.1 -59.2 898 F 1 94 02 09 36 02 26 03 3C279 09 26 23 28.0 116.6 -3.5 -50.6 7 1 1 94 02 25 18 02 28 02 --- 09 28 23 28.3 117.0 -3.5 -50.4 120 F 1 97 02 25 18 02 28 47 3C274 09 29 07 44.3 103.3 -3.0 -59.0 7 1 1 97 02 28 02 02 43 44 --- 09 44 07 47.4 106.1 -2.8 -57.8 898 F 1 112 02 28 02 02 44 29 3C279 09 44 52 31.5 120.0 -3.2 -48.5 6 1 1 112 02 43 44 02 46 28 --- 09 46 52 31.8 120.4 -3.2 -48.2 120 F 1 115 02 43 44 Schedule for VLBA_FD (Code Fd ) Page 3 bw082 M87 movie pilot. 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 ---------------------------------------------------------------------------------------- --- Fri 21 Apr 2006 Day 111 --- 02 47 13 3C274 09 47 36 48.1 106.7 -2.7 -57.5 6 1 1 115 02 46 28 03 02 11 --- 10 02 36 51.2 109.8 -2.5 -56.0 898 F 1 130 02 46 28 03 02 54 3C279 10 03 20 34.8 123.8 -2.9 -46.0 5 1 1 130 03 02 11 03 04 54 --- 10 05 20 35.2 124.2 -2.9 -45.7 120 F 1 133 03 02 11 03 06 54 OJ287 10 07 20 70.6 241.3 1.2 53.4 36 1 1 133 03 06 24 03 11 53 --- 10 12 20 69.7 243.3 1.3 54.9 299 F 1 138 03 06 47 03 13 43 J1159+2914 10 14 11 67.1 86.8 -1.8 -79.8 0 1 1 138 03 13 13 03 18 42 =1156+295 10 19 11 68.2 87.3 -1.7 -80.0 299 F 1 143 03 13 36 03 19 44 3C274 10 20 13 54.7 113.9 -2.2 -53.6 29 1 1 143 03 19 14 03 34 41 --- 10 35 13 57.6 118.0 -1.9 -51.1 898 F 1 158 03 19 37 03 35 26 3C279 10 35 57 40.4 131.2 -2.3 -40.6 4 1 1 158 03 34 41 03 37 25 --- 10 37 57 40.7 131.7 -2.3 -40.2 120 F 1 161 03 34 41 03 38 10 3C274 10 38 42 58.2 119.0 -1.9 -50.4 4 1 1 161 03 37 25 03 53 08 --- 10 53 42 61.0 123.8 -1.6 -47.1 898 F 1 176 03 37 25 03 53 52 3C279 10 54 26 43.3 136.0 -2.0 -36.9 3 1 1 176 03 53 08 03 55 52 --- 10 56 26 43.6 136.6 -2.0 -36.5 120 F 1 179 03 53 08 03 56 36 3C274 10 57 11 61.6 125.0 -1.6 -46.2 2 1 1 179 03 55 52 04 11 34 --- 11 12 11 64.2 130.8 -1.3 -41.9 898 F 1 194 03 55 52 04 12 18 3C279 11 12 55 45.9 141.3 -1.7 -32.7 2 1 1 194 04 11 34 04 14 17 --- 11 14 55 46.2 142.0 -1.7 -32.2 120 F 1 197 04 11 34 04 15 02 3C274 11 15 40 64.7 132.2 -1.3 -40.7 1 1 1 197 04 14 17 04 29 59 --- 11 30 40 67.0 139.3 -1.0 -35.1 898 F 1 212 04 14 17 04 30 43 3C279 11 31 24 48.2 147.2 -1.4 -28.0 0 1 1 212 04 29 59 04 32 43 --- 11 33 24 48.5 147.8 -1.4 -27.4 120 F 1 214 04 29 59 04 33 27 3C274 11 34 08 67.5 141.1 -1.0 -33.6 0 1 1 214 04 32 43 04 48 25 --- 11 49 08 69.3 149.7 -0.7 -26.4 898 F 1 230 04 32 43 04 49 09 3C279 11 49 52 50.2 153.5 -1.1 -22.7 0 1 1 230 04 48 25 04 51 09 --- 11 51 52 50.4 154.3 -1.1 -22.1 120 F 1 232 04 48 25 Schedule for VLBA_FD (Code Fd ) Page 4 bw082 M87 movie pilot. 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 ---------------------------------------------------------------------------------------- --- Fri 21 Apr 2006 Day 111 --- 04 51 53 3C274 11 52 37 69.7 151.9 -0.6 -24.5 0 1 1 232 04 51 09 05 06 51 --- 12 07 37 70.9 162.1 -0.4 -15.7 898 F 1 248 04 51 09 05 07 35 3C279 12 08 21 51.8 160.4 -0.8 -16.9 0 1 1 248 05 06 51 05 09 35 --- 12 10 21 51.9 161.2 -0.8 -16.2 120 F 1 250 05 06 51 05 10 19 3C274 12 11 06 71.1 164.7 -0.3 -13.5 0 1 1 250 05 09 35 05 25 17 --- 12 26 06 71.7 176.1 -0.1 -3.5 898 F 1 265 05 09 35 05 26 01 3C279 12 26 51 52.9 167.7 -0.5 -10.6 1 1 1 265 05 25 17 05 28 01 --- 12 28 51 52.9 168.5 -0.5 -9.9 120 F 1 268 05 25 17 05 30 01 J1159+2914 12 30 51 83.1 260.0 0.5 76.1 53 1 1 268 05 29 31 05 35 00 =1156+295 12 35 51 82.1 261.9 0.6 77.4 299 F 1 273 05 29 54 05 37 01 J1310+3220 12 37 52 82.8 434.5 -0.5 -101.2 0 1 1 273 05 36 31 05 42 00 =1308+326 12 42 52 83.8 432.5 -0.5 -103.9 299 F 1 279 05 36 54 05 44 47 3C274 12 45 39 71.4 191.2 0.2 9.8 0 1 1 279 05 44 17 05 59 44 --- 13 00 39 70.5 202.0 0.5 19.3 898 F 1 294 05 44 40 06 00 29 3C279 13 01 24 53.5 182.0 0.1 1.8 4 1 1 294 05 59 44 06 02 28 --- 13 03 24 53.5 182.9 0.1 2.5 120 F 1 296 05 59 44 06 03 13 3C274 13 04 08 70.2 204.4 0.5 21.4 5 1 1 296 06 02 28 06 18 10 --- 13 19 08 68.6 213.8 0.8 29.4 898 F 1 311 06 02 28 06 18 54 3C279 13 19 52 53.1 189.7 0.4 8.4 7 1 1 311 06 18 10 06 20 53 --- 13 21 52 53.0 190.5 0.4 9.1 120 F 1 314 06 18 10 06 21 37 3C274 13 22 36 68.2 215.8 0.9 31.0 7 1 1 314 06 20 53 06 36 35 --- 13 37 36 66.1 223.6 1.1 37.4 898 F 1 329 06 20 53 06 37 17 3C279 13 38 19 52.2 197.1 0.7 14.7 9 1 1 329 06 36 35 06 39 17 --- 13 40 19 52.1 197.9 0.7 15.4 120 F 1 332 06 36 35 06 40 00 3C274 13 41 01 65.6 225.2 1.2 38.7 10 1 1 332 06 39 17 06 54 57 --- 13 56 01 63.2 231.6 1.4 43.7 898 F 1 347 06 39 17 06 55 39 3C279 13 56 43 50.8 204.1 1.0 20.7 11 1 1 347 06 54 57 06 57 39 --- 13 58 43 50.6 204.9 1.0 21.3 120 F 1 350 06 54 57 Schedule for VLBA_FD (Code Fd ) Page 5 bw082 M87 movie pilot. 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 ---------------------------------------------------------------------------------------- --- Fri 21 Apr 2006 Day 111 --- 06 58 20 3C274 13 59 25 62.6 232.9 1.5 44.7 12 1 1 350 06 57 39 07 13 18 --- 14 14 25 60.0 238.2 1.7 48.5 898 F 1 365 06 57 39 07 13 58 3C279 14 15 06 49.0 210.6 1.3 26.1 13 1 1 365 07 13 18 07 15 58 --- 14 17 06 48.8 211.3 1.3 26.7 120 F 1 367 07 13 18 07 16 38 3C274 14 17 46 59.3 239.2 1.8 49.2 13 1 1 367 07 15 58 07 31 36 --- 14 32 46 56.5 243.6 2.0 52.1 898 F 1 382 07 15 58 07 32 15 3C279 14 33 26 46.8 216.6 1.6 31.0 14 1 1 382 07 31 36 07 34 15 --- 14 35 26 46.5 217.2 1.6 31.5 120 F 1 385 07 31 36 07 34 54 3C274 14 36 05 55.9 244.5 2.1 52.7 14 1 1 385 07 34 15 07 49 51 --- 14 51 05 52.9 248.2 2.3 54.9 898 F 1 400 07 34 15 07 50 30 3C279 14 51 44 44.3 222.0 1.9 35.4 15 1 1 400 07 49 51 07 52 30 --- 14 53 44 44.0 222.6 2.0 35.8 120 F 1 403 07 49 51 07 54 30 J1159+2914 14 55 44 52.1 279.3 2.9 76.6 76 1 1 403 07 54 00 07 59 29 =1156+295 15 00 44 51.1 279.8 3.0 76.3 299 F 1 408 07 54 23 08 00 06 J1310+3220 15 01 21 66.4 281.3 1.8 86.7 0 1 1 408 07 59 29 08 05 05 =1308+326 15 06 21 65.4 281.5 1.9 86.1 299 F 1 413 07 59 29 08 05 55 3C274 15 07 11 49.7 251.8 2.6 56.8 13 1 1 413 08 05 25 08 20 53 --- 15 22 11 46.6 254.7 2.9 58.2 898 F 1 428 08 05 48 08 21 35 3C279 15 22 54 39.5 230.2 2.4 41.6 20 1 1 428 08 20 53 08 23 35 --- 15 24 54 39.1 230.7 2.5 42.0 120 F 1 431 08 20 53 08 24 18 3C274 15 25 37 45.9 255.3 2.9 58.4 21 1 1 431 08 23 35 08 39 16 --- 15 40 37 42.7 258.0 3.2 59.5 898 F 1 446 08 23 35 08 40 00 3C279 15 41 21 36.3 234.4 2.7 44.7 23 1 1 446 08 39 16 08 42 00 --- 15 43 21 36.0 234.9 2.8 45.0 120 F 1 449 08 39 16 08 42 44 3C274 15 44 06 42.0 258.6 3.2 59.7 23 1 1 449 08 42 00 08 57 42 --- 15 59 06 38.8 261.0 3.5 60.4 898 F 1 464 08 42 00 08 58 25 3C279 15 59 50 33.0 238.3 3.1 47.4 22 1 1 464 08 57 42 09 00 25 --- 16 01 50 32.6 238.7 3.1 47.7 120 F 1 467 08 57 42 Schedule for VLBA_FD (Code Fd ) Page 6 bw082 M87 movie pilot. 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 ---------------------------------------------------------------------------------------- --- Fri 21 Apr 2006 Day 111 --- 09 01 08 3C274 16 02 33 38.1 261.5 3.5 60.6 22 1 1 467 09 00 25 09 16 06 --- 16 17 33 34.9 263.7 3.8 61.1 898 F 1 482 09 00 25 09 16 45 3C279 16 18 13 29.6 241.8 3.4 49.7 19 1 1 482 09 16 06 09 18 45 --- 16 20 13 29.2 242.2 3.4 49.9 120 F 1 484 09 16 06 09 19 23 3C274 16 20 51 34.2 264.2 3.8 61.2 18 1 1 484 09 18 45 09 34 21 --- 16 35 51 31.0 266.3 4.1 61.5 898 F 1 499 09 18 45 09 34 57 3C279 16 36 27 26.1 245.1 3.7 51.7 16 1 1 499 09 34 21 09 36 56 --- 16 38 27 25.7 245.4 3.7 51.9 120 F 1 502 09 34 21 09 37 33 3C274 16 39 04 30.3 266.7 4.1 61.6 16 1 1 502 09 36 56 09 52 31 --- 16 54 04 27.0 268.7 4.4 61.7 898 F 1 517 09 36 56 09 53 07 3C279 16 54 40 22.5 248.1 4.0 53.4 17 1 1 517 09 52 31 09 55 07 --- 16 56 40 22.1 248.4 4.0 53.6 120 F 1 520 09 52 31 09 55 43 3C274 16 57 17 26.3 269.1 4.4 61.7 17 1 1 520 09 55 07 10 10 41 --- 17 12 17 23.1 271.0 4.7 61.7 898 F 1 535 09 55 07 10 11 16 3C279 17 12 52 18.8 251.0 4.3 54.8 16 1 1 535 10 10 41 10 13 15 --- 17 14 52 18.4 251.3 4.3 55.0 120 F 1 537 10 10 41 10 13 50 3C274 17 15 27 22.4 271.4 4.7 61.7 15 1 1 537 10 13 15 10 28 48 --- 17 30 27 19.2 273.3 5.0 61.6 898 F 1 552 10 13 15 10 29 21 3C279 17 31 00 15.1 253.6 4.6 56.1 14 1 1 552 10 28 48 10 31 20 --- 17 33 00 14.7 253.9 4.6 56.2 120 F 1 555 10 28 48 10 33 59 1726+455 17 35 40 75.1 354.6 0.1 173.3 32 1 1 555 10 33 29 10 36 59 --- 17 38 40 75.0 352.5 0.2 170.8 180 F 1 558 10 33 52 10 40 17 1751+288 17 41 58 86.8 124.5 -0.2 -54.0 40 1 1 558 10 39 47 10 43 16 --- 17 44 58 87.3 132.7 -0.2 -46.2 180 F 1 561 10 40 10 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bw082.set Matches group v7mm_c8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 4 Station: VLBA_FD Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Speedup factor: 2.00 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: 4 Setup file default. Used pcal sets: 1 LO sum= 43127.49 43127.49 43135.49 43135.49 BBC fr= 727.49 727.49 735.49 735.49 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_off SOURCE LIST -- bw082 M87 movie pilot. 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) J0854+2006 08 51 57.250618 * 08 54 48.874930 08 55 10.791396 0.21 0851+202 20 17 58.41741 * 20 06 30.64086 20 05 10.33376 0.40 J0854+20 /home/filehost/cwalker/sched/catalogs/sources.vlba * OJ287 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.216 scan hours, 9.723 baseline hours above horizon. * J1159+2914 11 56 57.786209 * 11 59 31.833910 11 59 52.694997 0.23 1156+295 29 31 25.73874 * 29 14 43.82684 29 12 37.05144 0.40 J1159+29 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.249 scan hours, 11.219 baseline hours above horizon. J1230+1223 12 28 17.569279 * 12 30 49.423381 12 31 09.770533 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 21 17.14059 0.20 * 3C274 /home/filehost/cwalker/sched/catalogs/sources.vlba J1230+12 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 7.230 scan hours, 292.449 baseline hours above horizon. J1256-0547 12 53 35.831291 * 12 56 11.166559 12 56 31.801981 0.20 1253-055 -05 31 07.99586 *-05 47 21.52472 -05 49 33.21172 0.30 * 3C279 /home/filehost/cwalker/sched/catalogs/sources.vlba J1256-05 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.964 scan hours, 36.334 baseline hours above horizon. * J1310+3220 13 08 07.560131 * 13 10 28.663850 13 10 48.162054 0.24 1308+326 32 36 40.23883 * 32 20 43.78290 32 18 37.85933 0.40 J1310+32 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.166 scan hours, 7.480 baseline hours above horizon. J1727+4530 17 26 01.198750 * 17 27 27.650804 17 27 39.743662 0.29 * 1726+455 45 33 04.55118 * 45 30 39.73133 45 29 57.42754 0.40 J1727+45 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.050 scan hours, 2.244 baseline hours above horizon. J1753+2848 17 51 45.401869 * 17 53 42.473641 17 53 57.954430 0.23 * 1751+288 28 48 36.64959 * 28 48 04.93887 28 47 38.40938 0.40 J1753+28 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro 0.050 scan hours, 2.244 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) OJ287 99.6 J1159+2914 130.4 3C274 148.0 3C279 164.3 J1310+3220 134.6 1726+455 105.4 1751+288 109.6 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