COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: bw082 M87 movie pilot. Walker, Ly, Junor, Hardee Exp. Code: bw082b 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: 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 ---------------------------------------------------------------------------------------- --- Tue 11 Apr 2006 Day 101 --- 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 01 25 57 OJ287 07 46 42 71.3 120.3 -1.1 -52.2 0 1 1 0 01 25 27 01 33 56 --- 07 54 42 72.8 124.2 -1.0 -49.3 479 F 1 8 01 25 50 01 36 00 3C274 07 56 46 24.6 89.8 -4.6 -61.7 22 1 1 8 01 35 30 01 50 58 --- 08 11 46 27.8 91.8 -4.3 -61.7 898 F 1 23 01 35 53 01 51 41 3C279 08 12 29 13.1 105.0 -4.7 -56.7 8 1 1 23 01 50 58 01 53 40 --- 08 14 29 13.5 105.3 -4.7 -56.5 120 F 1 26 01 50 58 01 54 24 3C274 08 15 13 28.5 92.2 -4.3 -61.7 7 1 1 26 01 53 40 02 09 21 --- 08 30 13 31.8 94.2 -4.0 -61.5 898 F 1 41 01 53 40 02 10 05 3C279 08 30 57 16.9 107.7 -4.4 -55.5 8 1 1 41 02 09 21 02 12 04 --- 08 32 57 17.3 108.0 -4.4 -55.4 120 F 1 44 02 09 21 02 12 48 3C274 08 33 41 32.5 94.7 -4.0 -61.4 8 1 1 44 02 12 04 02 27 46 --- 08 48 41 35.7 96.9 -3.7 -61.0 898 F 1 59 02 12 04 02 28 30 3C279 08 49 25 20.7 110.5 -4.1 -54.1 8 1 1 59 02 27 46 02 30 29 --- 08 51 25 21.1 110.8 -4.1 -54.0 120 F 1 61 02 27 46 02 31 14 3C274 08 52 09 36.4 97.4 -3.7 -60.9 8 1 1 61 02 30 29 02 46 11 --- 09 07 09 39.6 99.7 -3.4 -60.3 898 F 1 77 02 30 29 02 46 56 3C279 09 07 53 24.4 113.4 -3.8 -52.5 8 1 1 77 02 46 11 02 48 55 --- 09 09 53 24.8 113.8 -3.8 -52.3 120 F 1 79 02 46 11 02 49 40 3C274 09 10 38 40.4 100.2 -3.3 -60.1 7 1 1 79 02 48 55 03 04 37 --- 09 25 38 43.5 102.7 -3.1 -59.2 898 F 1 94 02 48 55 03 05 22 3C279 09 26 23 28.0 116.6 -3.5 -50.6 7 1 1 94 03 04 37 03 07 21 --- 09 28 23 28.3 117.0 -3.5 -50.4 120 F 1 97 03 04 37 03 08 06 3C274 09 29 07 44.3 103.3 -3.0 -59.0 7 1 1 97 03 07 21 03 23 03 --- 09 44 07 47.4 106.1 -2.8 -57.8 898 F 1 112 03 07 21 03 23 48 3C279 09 44 52 31.5 120.0 -3.2 -48.5 6 1 1 112 03 23 03 03 25 48 --- 09 46 52 31.8 120.4 -3.2 -48.2 120 F 1 115 03 23 03 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 ---------------------------------------------------------------------------------------- --- Tue 11 Apr 2006 Day 101 --- 03 26 32 3C274 09 47 36 48.1 106.7 -2.7 -57.5 6 1 1 115 03 25 48 03 41 30 --- 10 02 36 51.2 109.8 -2.5 -56.0 898 F 1 130 03 25 48 03 42 13 3C279 10 03 20 34.8 123.8 -2.9 -46.0 5 1 1 130 03 41 30 03 44 13 --- 10 05 20 35.2 124.2 -2.9 -45.7 120 F 1 133 03 41 30 03 46 13 OJ287 10 07 20 70.6 241.3 1.2 53.4 36 1 1 133 03 45 43 03 51 12 --- 10 12 20 69.7 243.3 1.3 54.9 299 F 1 138 03 46 06 03 53 02 J1159+2914 10 14 11 67.1 86.8 -1.8 -79.8 0 1 1 138 03 52 32 03 58 01 =1156+295 10 19 11 68.2 87.3 -1.7 -80.0 299 F 1 143 03 52 55 03 59 03 3C274 10 20 13 54.7 113.9 -2.2 -53.6 29 1 1 143 03 58 33 04 14 01 --- 10 35 13 57.6 118.0 -1.9 -51.1 898 F 1 158 03 58 56 04 14 45 3C279 10 35 57 40.4 131.2 -2.3 -40.6 4 1 1 158 04 14 01 04 16 45 --- 10 37 57 40.7 131.7 -2.3 -40.2 120 F 1 161 04 14 01 04 17 29 3C274 10 38 42 58.2 119.0 -1.9 -50.4 4 1 1 161 04 16 45 04 32 27 --- 10 53 42 61.0 123.8 -1.6 -47.1 898 F 1 176 04 16 45 04 33 11 3C279 10 54 26 43.3 136.0 -2.0 -36.9 3 1 1 176 04 32 27 04 35 11 --- 10 56 26 43.6 136.6 -2.0 -36.5 120 F 1 179 04 32 27 04 35 55 3C274 10 57 11 61.6 125.0 -1.6 -46.2 2 1 1 179 04 35 11 04 50 53 --- 11 12 11 64.2 130.8 -1.3 -41.9 898 F 1 194 04 35 11 04 51 37 3C279 11 12 55 45.9 141.3 -1.7 -32.7 2 1 1 194 04 50 53 04 53 37 --- 11 14 55 46.2 142.0 -1.7 -32.2 120 F 1 197 04 50 53 04 54 21 3C274 11 15 40 64.7 132.2 -1.3 -40.7 1 1 1 197 04 53 37 05 09 18 --- 11 30 40 67.0 139.3 -1.0 -35.1 898 F 1 212 04 53 37 05 10 02 3C279 11 31 24 48.2 147.2 -1.4 -28.0 0 1 1 212 05 09 18 05 12 02 --- 11 33 24 48.5 147.8 -1.4 -27.4 120 F 1 214 05 09 18 05 12 46 3C274 11 34 08 67.5 141.1 -1.0 -33.6 0 1 1 214 05 12 02 05 27 44 --- 11 49 08 69.3 149.7 -0.7 -26.4 898 F 1 230 05 12 02 05 28 28 3C279 11 49 52 50.2 153.5 -1.1 -22.7 0 1 1 230 05 27 44 05 30 28 --- 11 51 52 50.4 154.3 -1.1 -22.1 120 F 1 232 05 27 44 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 ---------------------------------------------------------------------------------------- --- Tue 11 Apr 2006 Day 101 --- 05 31 12 3C274 11 52 37 69.7 151.9 -0.6 -24.5 0 1 1 232 05 30 28 05 46 10 --- 12 07 37 70.9 162.1 -0.4 -15.7 898 F 1 248 05 30 28 05 46 54 3C279 12 08 21 51.8 160.4 -0.8 -16.9 0 1 1 248 05 46 10 05 48 54 --- 12 10 21 51.9 161.2 -0.8 -16.2 120 F 1 250 05 46 10 05 49 38 3C274 12 11 06 71.1 164.7 -0.3 -13.5 0 1 1 250 05 48 54 06 04 36 --- 12 26 06 71.7 176.1 -0.1 -3.5 898 F 1 265 05 48 54 06 05 20 3C279 12 26 51 52.9 167.7 -0.5 -10.6 1 1 1 265 06 04 36 06 07 20 --- 12 28 51 52.9 168.5 -0.5 -9.9 120 F 1 268 06 04 36 06 09 20 J1159+2914 12 30 51 83.1 260.0 0.5 76.1 53 1 1 268 06 08 50 06 14 19 =1156+295 12 35 51 82.1 261.9 0.6 77.4 299 F 1 273 06 09 13 06 16 20 J1310+3220 12 37 52 82.8 434.5 -0.5 -101.2 0 1 1 273 06 15 50 06 21 19 =1308+326 12 42 52 83.8 432.5 -0.5 -103.9 299 F 1 279 06 16 13 06 24 06 3C274 12 45 39 71.4 191.2 0.2 9.8 0 1 1 279 06 23 36 06 39 03 --- 13 00 39 70.5 202.0 0.5 19.3 898 F 1 294 06 23 59 06 39 48 3C279 13 01 24 53.5 182.0 0.1 1.8 4 1 1 294 06 39 03 06 41 47 --- 13 03 24 53.5 182.9 0.1 2.5 120 F 1 296 06 39 03 06 42 32 3C274 13 04 08 70.2 204.4 0.5 21.4 5 1 1 296 06 41 47 06 57 29 --- 13 19 08 68.6 213.8 0.8 29.4 898 F 1 311 06 41 47 06 58 13 3C279 13 19 52 53.1 189.7 0.4 8.4 7 1 1 311 06 57 29 07 00 13 --- 13 21 52 53.0 190.5 0.4 9.1 120 F 1 314 06 57 29 07 00 56 3C274 13 22 36 68.2 215.8 0.9 31.0 7 1 1 314 07 00 13 07 15 54 --- 13 37 36 66.1 223.6 1.1 37.4 898 F 1 329 07 00 13 07 16 36 3C279 13 38 19 52.2 197.1 0.7 14.7 9 1 1 329 07 15 54 07 18 36 --- 13 40 19 52.1 197.9 0.7 15.4 120 F 1 332 07 15 54 07 19 19 3C274 13 41 01 65.6 225.2 1.2 38.7 10 1 1 332 07 18 36 07 34 16 --- 13 56 01 63.2 231.6 1.4 43.7 898 F 1 347 07 18 36 07 34 58 3C279 13 56 43 50.8 204.1 1.0 20.7 11 1 1 347 07 34 16 07 36 58 --- 13 58 43 50.6 204.9 1.0 21.3 120 F 1 350 07 34 16 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 ---------------------------------------------------------------------------------------- --- Tue 11 Apr 2006 Day 101 --- 07 37 39 3C274 13 59 25 62.6 232.9 1.5 44.7 12 1 1 350 07 36 58 07 52 37 --- 14 14 25 60.0 238.2 1.7 48.5 898 F 1 365 07 36 58 07 53 17 3C279 14 15 06 49.0 210.6 1.3 26.1 13 1 1 365 07 52 37 07 55 17 --- 14 17 06 48.8 211.3 1.3 26.7 120 F 1 367 07 52 37 07 55 57 3C274 14 17 46 59.3 239.2 1.8 49.2 13 1 1 367 07 55 17 08 10 55 --- 14 32 46 56.5 243.6 2.0 52.1 898 F 1 382 07 55 17 08 11 34 3C279 14 33 26 46.8 216.6 1.6 31.0 14 1 1 382 08 10 55 08 13 34 --- 14 35 26 46.5 217.2 1.6 31.5 120 F 1 385 08 10 55 08 14 13 3C274 14 36 05 55.9 244.5 2.1 52.7 14 1 1 385 08 13 34 08 29 11 --- 14 51 05 52.9 248.2 2.3 54.9 898 F 1 400 08 13 34 08 29 49 3C279 14 51 44 44.3 222.0 1.9 35.4 15 1 1 400 08 29 11 08 31 49 --- 14 53 44 44.0 222.6 2.0 35.8 120 F 1 403 08 29 11 08 33 49 J1159+2914 14 55 44 52.1 279.3 2.9 76.6 76 1 1 403 08 33 19 08 38 48 =1156+295 15 00 44 51.1 279.8 3.0 76.3 299 F 1 408 08 33 42 08 39 25 J1310+3220 15 01 21 66.4 281.3 1.8 86.7 0 1 1 408 08 38 48 08 44 24 =1308+326 15 06 21 65.4 281.5 1.9 86.1 299 F 1 413 08 38 48 08 45 14 3C274 15 07 11 49.7 251.8 2.6 56.8 13 1 1 413 08 44 44 09 00 12 --- 15 22 11 46.6 254.7 2.9 58.2 898 F 1 428 08 45 07 09 00 54 3C279 15 22 54 39.5 230.2 2.4 41.6 20 1 1 428 09 00 12 09 02 54 --- 15 24 54 39.1 230.7 2.5 42.0 120 F 1 431 09 00 12 09 03 37 3C274 15 25 37 45.9 255.3 2.9 58.4 21 1 1 431 09 02 54 09 18 35 --- 15 40 37 42.7 258.0 3.2 59.5 898 F 1 446 09 02 54 09 19 19 3C279 15 41 21 36.3 234.4 2.7 44.7 23 1 1 446 09 18 35 09 21 19 --- 15 43 21 36.0 234.9 2.8 45.0 120 F 1 449 09 18 35 09 22 03 3C274 15 44 06 42.0 258.6 3.2 59.7 23 1 1 449 09 21 19 09 37 01 --- 15 59 06 38.8 261.0 3.5 60.4 898 F 1 464 09 21 19 09 37 44 3C279 15 59 50 33.0 238.3 3.1 47.4 22 1 1 464 09 37 01 09 39 44 --- 16 01 50 32.6 238.7 3.1 47.7 120 F 1 467 09 37 01 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 ---------------------------------------------------------------------------------------- --- Tue 11 Apr 2006 Day 101 --- 09 40 27 3C274 16 02 33 38.1 261.5 3.5 60.6 22 1 1 467 09 39 44 09 55 25 --- 16 17 33 34.9 263.7 3.8 61.1 898 F 1 482 09 39 44 09 56 04 3C279 16 18 13 29.6 241.8 3.4 49.7 19 1 1 482 09 55 25 09 58 04 --- 16 20 13 29.2 242.2 3.4 49.9 120 F 1 484 09 55 25 09 58 42 3C274 16 20 51 34.2 264.2 3.8 61.2 18 1 1 484 09 58 04 10 13 40 --- 16 35 51 31.0 266.3 4.1 61.5 898 F 1 499 09 58 04 10 14 16 3C279 16 36 27 26.1 245.1 3.7 51.7 16 1 1 499 10 13 40 10 16 15 --- 16 38 27 25.7 245.4 3.7 51.9 120 F 1 502 10 13 40 10 16 52 3C274 16 39 04 30.3 266.7 4.1 61.6 16 1 1 502 10 16 15 10 31 50 --- 16 54 04 27.0 268.7 4.4 61.7 898 F 1 517 10 16 15 10 32 26 3C279 16 54 40 22.5 248.1 4.0 53.4 17 1 1 517 10 31 50 10 34 26 --- 16 56 40 22.1 248.4 4.0 53.6 120 F 1 520 10 31 50 10 35 02 3C274 16 57 17 26.3 269.1 4.4 61.7 17 1 1 520 10 34 26 10 50 00 --- 17 12 17 23.1 271.0 4.7 61.7 898 F 1 535 10 34 26 10 50 35 3C279 17 12 52 18.8 251.0 4.3 54.8 16 1 1 535 10 50 00 10 52 35 --- 17 14 52 18.4 251.3 4.3 55.0 120 F 1 537 10 50 00 10 53 09 3C274 17 15 27 22.4 271.4 4.7 61.7 15 1 1 537 10 52 35 11 08 07 --- 17 30 27 19.2 273.3 5.0 61.6 898 F 1 552 10 52 35 11 08 40 3C279 17 31 00 15.1 253.6 4.6 56.1 14 1 1 552 11 08 07 11 10 39 --- 17 33 00 14.7 253.9 4.6 56.2 120 F 1 555 11 08 07 11 13 18 1726+455 17 35 39 75.1 354.6 0.1 173.3 32 1 1 555 11 12 48 11 16 18 --- 17 38 39 75.0 352.5 0.2 170.8 180 F 1 558 11 13 11 11 19 36 1751+288 17 41 58 86.8 124.5 -0.2 -54.0 40 1 1 558 11 19 06 11 22 35 --- 17 44 58 87.3 132.7 -0.1 -46.1 180 F 1 561 11 19 29 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/arana/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 10.932367 0.21 0851+202 20 17 58.41741 * 20 06 30.64086 20 05 09.97530 0.40 J0854+2006 /home/arana/cwalker/sched/catalogs/sources.vlba J0854+20 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro * OJ287 0.216 scan hours, 9.723 baseline hours above horizon. * J1159+2914 11 56 57.786209 * 11 59 31.833910 11 59 52.729654 0.23 1156+295 29 31 25.73874 * 29 14 43.82684 29 12 35.54423 0.40 J1159+29 /home/arana/cwalker/sched/catalogs/sources.vlba J1159+2914 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro J1159+2914 0.249 scan hours, 11.219 baseline hours above horizon. J1230+1223 12 28 17.569279 * 12 30 49.423381 12 31 09.757820 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 21 16.34555 0.20 * 3C274 /home/arana/cwalker/sched/catalogs/sources.vlba J1230+12 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro J1230+1223 7.230 scan hours, 292.449 baseline hours above horizon. J1256-0547 12 53 35.831291 * 12 56 11.166559 12 56 31.754712 0.20 1253-055 -05 31 07.99586 *-05 47 21.52472 -05 49 33.01787 0.30 * 3C279 /home/arana/cwalker/sched/catalogs/sources.vlba J1256-05 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro J1256-0547 0.964 scan hours, 36.334 baseline hours above horizon. * J1310+3220 13 08 07.560131 * 13 10 28.663850 13 10 48.127739 0.24 1308+326 32 36 40.23883 * 32 20 43.78290 32 18 35.95428 0.40 J1310+32 /home/arana/cwalker/sched/catalogs/sources.vlba J1310+3220 VLBA Calib Survey - GSFC sols. - created L.Petrov 2005f_astro J1310+3220 0.166 scan hours, 7.480 baseline hours above horizon. J1727+4530 17 26 01.198750 * 17 27 27.650804 17 27 39.423874 0.29 * 1726+455 45 33 04.55118 * 45 30 39.73133 45 29 55.47578 0.40 J1727+45 /home/arana/cwalker/sched/catalogs/sources.vlba J1727+4530 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 57.656264 0.23 * 1751+288 28 48 36.64959 * 28 48 04.93887 28 47 36.87293 0.40 J1753+28 /home/arana/cwalker/sched/catalogs/sources.vlba J1753+2848 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 109.3 J1159+2914 138.0 3C274 156.2 3C279 174.0 J1310+3220 139.4 1726+455 102.7 1751+288 104.1 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