COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: bw082 M87 movie pilot. Walker, Ly, Junor, Hardee Exp. Code: bw082a 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 ---------------------------------------------------------------------------------------- --- Sat 8 Apr 2006 Day 98 --- 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 37 45 OJ287 07 46 42 71.3 120.3 -1.1 -52.2 0 1 1 0 01 37 15 01 45 44 --- 07 54 42 72.8 124.2 -1.0 -49.3 479 F 1 8 01 37 38 01 47 48 3C274 07 56 46 24.6 89.8 -4.6 -61.7 22 1 1 8 01 47 18 02 02 45 --- 08 11 46 27.8 91.8 -4.3 -61.7 898 F 1 23 01 47 41 02 03 28 3C279 08 12 29 13.1 105.0 -4.7 -56.7 8 1 1 23 02 02 45 02 05 28 --- 08 14 29 13.5 105.3 -4.7 -56.5 120 F 1 26 02 02 45 02 06 11 3C274 08 15 13 28.5 92.2 -4.3 -61.7 7 1 1 26 02 05 28 02 21 09 --- 08 30 13 31.8 94.2 -4.0 -61.5 898 F 1 41 02 05 28 02 21 52 3C279 08 30 57 16.9 107.7 -4.4 -55.5 8 1 1 41 02 21 09 02 23 52 --- 08 32 57 17.3 108.0 -4.4 -55.4 120 F 1 44 02 21 09 02 24 36 3C274 08 33 41 32.5 94.7 -4.0 -61.4 8 1 1 44 02 23 52 02 39 34 --- 08 48 41 35.7 96.9 -3.7 -61.0 898 F 1 59 02 23 52 02 40 18 3C279 08 49 25 20.7 110.5 -4.1 -54.1 8 1 1 59 02 39 34 02 42 17 --- 08 51 25 21.1 110.8 -4.1 -54.0 120 F 1 61 02 39 34 02 43 02 3C274 08 52 09 36.4 97.4 -3.7 -60.9 8 1 1 61 02 42 17 02 57 59 --- 09 07 09 39.6 99.7 -3.4 -60.3 898 F 1 77 02 42 17 02 58 43 3C279 09 07 53 24.4 113.4 -3.8 -52.5 8 1 1 77 02 57 59 03 00 43 --- 09 09 53 24.8 113.8 -3.8 -52.3 120 F 1 79 02 57 59 03 01 27 3C274 09 10 38 40.4 100.2 -3.3 -60.1 7 1 1 79 03 00 43 03 16 25 --- 09 25 38 43.5 102.7 -3.1 -59.2 898 F 1 94 03 00 43 03 17 09 3C279 09 26 23 28.0 116.6 -3.5 -50.6 7 1 1 94 03 16 25 03 19 09 --- 09 28 23 28.3 117.0 -3.5 -50.4 120 F 1 97 03 16 25 03 19 54 3C274 09 29 07 44.3 103.3 -3.0 -59.0 7 1 1 97 03 19 09 03 34 51 --- 09 44 07 47.4 106.1 -2.8 -57.8 898 F 1 112 03 19 09 03 35 36 3C279 09 44 52 31.5 120.0 -3.2 -48.5 6 1 1 112 03 34 51 03 37 35 --- 09 46 52 31.8 120.4 -3.2 -48.2 120 F 1 115 03 34 51 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 ---------------------------------------------------------------------------------------- --- Sat 8 Apr 2006 Day 98 --- 03 38 20 3C274 09 47 36 48.1 106.7 -2.7 -57.5 6 1 1 115 03 37 35 03 53 17 --- 10 02 36 51.2 109.8 -2.5 -56.0 898 F 1 130 03 37 35 03 54 01 3C279 10 03 20 34.8 123.8 -2.9 -46.0 5 1 1 130 03 53 17 03 56 01 --- 10 05 20 35.2 124.2 -2.9 -45.7 120 F 1 133 03 53 17 03 58 01 OJ287 10 07 20 70.6 241.3 1.2 53.4 36 1 1 133 03 57 31 04 03 00 --- 10 12 20 69.7 243.3 1.3 54.9 299 F 1 138 03 57 54 04 04 50 J1159+2914 10 14 11 67.1 86.8 -1.8 -79.8 0 1 1 138 04 04 20 04 09 49 =1156+295 10 19 11 68.2 87.3 -1.7 -80.0 299 F 1 143 04 04 43 04 10 51 3C274 10 20 13 54.7 113.9 -2.2 -53.6 29 1 1 143 04 10 21 04 25 48 --- 10 35 13 57.6 118.0 -1.9 -51.1 898 F 1 158 04 10 44 04 26 33 3C279 10 35 57 40.4 131.2 -2.3 -40.6 4 1 1 158 04 25 48 04 28 32 --- 10 37 57 40.7 131.7 -2.3 -40.2 120 F 1 161 04 25 48 04 29 17 3C274 10 38 42 58.2 119.0 -1.9 -50.4 4 1 1 161 04 28 32 04 44 14 --- 10 53 42 61.0 123.8 -1.6 -47.1 898 F 1 176 04 28 32 04 44 59 3C279 10 54 26 43.3 136.0 -2.0 -36.9 3 1 1 176 04 44 14 04 46 58 --- 10 56 26 43.6 136.6 -2.0 -36.5 120 F 1 179 04 44 14 04 47 43 3C274 10 57 11 61.6 125.0 -1.6 -46.2 2 1 1 179 04 46 58 05 02 40 --- 11 12 11 64.2 130.8 -1.3 -41.9 898 F 1 194 04 46 58 05 03 25 3C279 11 12 55 45.9 141.3 -1.7 -32.7 2 1 1 194 05 02 40 05 05 24 --- 11 14 55 46.2 142.0 -1.7 -32.2 120 F 1 197 05 02 40 05 06 08 3C274 11 15 40 64.7 132.2 -1.3 -40.7 1 1 1 197 05 05 24 05 21 06 --- 11 30 40 67.0 139.3 -1.0 -35.1 898 F 1 212 05 05 24 05 21 50 3C279 11 31 24 48.2 147.2 -1.4 -28.0 0 1 1 212 05 21 06 05 23 50 --- 11 33 24 48.5 147.8 -1.4 -27.4 120 F 1 214 05 21 06 05 24 34 3C274 11 34 08 67.5 141.1 -1.0 -33.6 0 1 1 214 05 23 50 05 39 31 --- 11 49 08 69.3 149.7 -0.7 -26.4 898 F 1 230 05 23 50 05 40 16 3C279 11 49 52 50.2 153.5 -1.1 -22.7 0 1 1 230 05 39 31 05 42 15 --- 11 51 52 50.4 154.3 -1.1 -22.1 120 F 1 232 05 39 31 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 ---------------------------------------------------------------------------------------- --- Sat 8 Apr 2006 Day 98 --- 05 43 00 3C274 11 52 37 69.7 151.9 -0.6 -24.5 0 1 1 232 05 42 15 05 57 57 --- 12 07 37 70.9 162.1 -0.4 -15.7 898 F 1 248 05 42 15 05 58 42 3C279 12 08 21 51.8 160.4 -0.8 -16.9 0 1 1 248 05 57 57 06 00 41 --- 12 10 21 51.9 161.2 -0.8 -16.2 120 F 1 250 05 57 57 06 01 26 3C274 12 11 06 71.1 164.7 -0.3 -13.5 0 1 1 250 06 00 41 06 16 24 --- 12 26 06 71.7 176.1 -0.1 -3.5 898 F 1 265 06 00 41 06 17 08 3C279 12 26 51 52.9 167.7 -0.5 -10.6 1 1 1 265 06 16 24 06 19 08 --- 12 28 51 52.9 168.5 -0.5 -9.9 120 F 1 268 06 16 24 06 21 07 J1159+2914 12 30 51 83.1 260.0 0.5 76.1 53 1 1 268 06 20 37 06 26 07 =1156+295 12 35 51 82.1 261.9 0.6 77.4 299 F 1 273 06 21 00 06 28 08 J1310+3220 12 37 52 82.8 434.5 -0.5 -101.2 0 1 1 273 06 27 38 06 33 07 =1308+326 12 42 52 83.8 432.5 -0.5 -103.9 299 F 1 279 06 28 01 06 35 54 3C274 12 45 39 71.4 191.2 0.2 9.8 0 1 1 279 06 35 24 06 50 51 --- 13 00 39 70.5 202.0 0.5 19.3 898 F 1 294 06 35 47 06 51 35 3C279 13 01 24 53.5 182.0 0.1 1.8 4 1 1 294 06 50 51 06 53 35 --- 13 03 24 53.5 182.9 0.1 2.5 120 F 1 296 06 50 51 06 54 19 3C274 13 04 08 70.2 204.4 0.5 21.4 5 1 1 296 06 53 35 07 09 17 --- 13 19 08 68.6 213.8 0.8 29.4 898 F 1 311 06 53 35 07 10 01 3C279 13 19 52 53.1 189.7 0.4 8.4 7 1 1 311 07 09 17 07 12 00 --- 13 21 52 53.0 190.5 0.4 9.1 120 F 1 314 07 09 17 07 12 44 3C274 13 22 36 68.2 215.8 0.9 31.0 7 1 1 314 07 12 00 07 27 41 --- 13 37 36 66.1 223.6 1.1 37.4 898 F 1 329 07 12 00 07 28 24 3C279 13 38 19 52.2 197.1 0.7 14.7 9 1 1 329 07 27 41 07 30 24 --- 13 40 19 52.1 197.9 0.7 15.4 120 F 1 332 07 27 41 07 31 06 3C274 13 41 01 65.6 225.2 1.2 38.7 10 1 1 332 07 30 24 07 46 04 --- 13 56 01 63.2 231.6 1.4 43.7 898 F 1 347 07 30 24 07 46 46 3C279 13 56 43 50.8 204.1 1.0 20.7 11 1 1 347 07 46 04 07 48 45 --- 13 58 43 50.6 204.9 1.0 21.3 120 F 1 350 07 46 04 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 ---------------------------------------------------------------------------------------- --- Sat 8 Apr 2006 Day 98 --- 07 49 27 3C274 13 59 25 62.6 232.9 1.5 44.7 12 1 1 350 07 48 45 08 04 25 --- 14 14 25 60.0 238.2 1.7 48.5 898 F 1 365 07 48 45 08 05 05 3C279 14 15 06 49.0 210.6 1.3 26.1 13 1 1 365 08 04 25 08 07 05 --- 14 17 06 48.8 211.3 1.3 26.7 120 F 1 367 08 04 25 08 07 45 3C274 14 17 46 59.3 239.2 1.8 49.2 13 1 1 367 08 07 05 08 22 43 --- 14 32 46 56.5 243.6 2.0 52.1 898 F 1 382 08 07 05 08 23 22 3C279 14 33 26 46.8 216.6 1.6 31.0 14 1 1 382 08 22 43 08 25 22 --- 14 35 26 46.5 217.2 1.6 31.5 120 F 1 385 08 22 43 08 26 01 3C274 14 36 05 55.9 244.5 2.1 52.7 14 1 1 385 08 25 22 08 40 58 --- 14 51 05 52.9 248.2 2.3 54.9 898 F 1 400 08 25 22 08 41 37 3C279 14 51 44 44.3 222.0 1.9 35.4 15 1 1 400 08 40 58 08 43 37 --- 14 53 44 44.0 222.6 2.0 35.8 120 F 1 403 08 40 58 08 45 37 J1159+2914 14 55 44 52.1 279.3 2.9 76.6 76 1 1 403 08 45 07 08 50 36 =1156+295 15 00 44 51.1 279.8 3.0 76.3 299 F 1 408 08 45 30 08 51 13 J1310+3220 15 01 21 66.4 281.3 1.8 86.7 0 1 1 408 08 50 36 08 56 12 =1308+326 15 06 21 65.4 281.5 1.9 86.1 299 F 1 413 08 50 36 08 57 02 3C274 15 07 11 49.7 251.8 2.6 56.8 13 1 1 413 08 56 32 09 11 59 --- 15 22 11 46.6 254.7 2.9 58.2 898 F 1 428 08 56 55 09 12 42 3C279 15 22 54 39.5 230.2 2.4 41.6 20 1 1 428 09 11 59 09 14 42 --- 15 24 54 39.1 230.7 2.5 42.0 120 F 1 431 09 11 59 09 15 25 3C274 15 25 37 45.9 255.3 2.9 58.4 21 1 1 431 09 14 42 09 30 23 --- 15 40 37 42.7 258.0 3.2 59.5 898 F 1 446 09 14 42 09 31 07 3C279 15 41 21 36.3 234.4 2.7 44.7 23 1 1 446 09 30 23 09 33 06 --- 15 43 21 36.0 234.9 2.8 45.0 120 F 1 449 09 30 23 09 33 51 3C274 15 44 06 42.0 258.6 3.2 59.7 23 1 1 449 09 33 06 09 48 49 --- 15 59 06 38.8 261.0 3.5 60.4 898 F 1 464 09 33 06 09 49 32 3C279 15 59 50 33.0 238.3 3.1 47.4 22 1 1 464 09 48 49 09 51 32 --- 16 01 50 32.6 238.7 3.1 47.7 120 F 1 467 09 48 49 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 ---------------------------------------------------------------------------------------- --- Sat 8 Apr 2006 Day 98 --- 09 52 15 3C274 16 02 33 38.1 261.5 3.5 60.6 22 1 1 467 09 51 32 10 07 12 --- 16 17 33 34.9 263.7 3.8 61.1 898 F 1 482 09 51 32 10 07 52 3C279 16 18 13 29.6 241.8 3.4 49.7 19 1 1 482 10 07 12 10 09 52 --- 16 20 13 29.2 242.2 3.4 49.9 120 F 1 484 10 07 12 10 10 30 3C274 16 20 51 34.2 264.2 3.8 61.2 18 1 1 484 10 09 52 10 25 28 --- 16 35 51 31.0 266.3 4.1 61.5 898 F 1 499 10 09 52 10 26 04 3C279 16 36 27 26.1 245.1 3.7 51.7 16 1 1 499 10 25 28 10 28 03 --- 16 38 27 25.7 245.4 3.7 51.9 120 F 1 502 10 25 28 10 28 40 3C274 16 39 04 30.3 266.7 4.1 61.6 16 1 1 502 10 28 03 10 43 37 --- 16 54 04 27.0 268.7 4.4 61.7 898 F 1 517 10 28 03 10 44 14 3C279 16 54 40 22.5 248.1 4.0 53.4 17 1 1 517 10 43 37 10 46 13 --- 16 56 40 22.1 248.4 4.0 53.6 120 F 1 520 10 43 37 10 46 50 3C274 16 57 17 26.3 269.1 4.4 61.7 17 1 1 520 10 46 13 11 01 48 --- 17 12 17 23.1 271.0 4.7 61.7 898 F 1 535 10 46 13 11 02 23 3C279 17 12 52 18.8 251.0 4.3 54.8 16 1 1 535 11 01 48 11 04 22 --- 17 14 52 18.4 251.3 4.3 55.0 120 F 1 537 11 01 48 11 04 57 3C274 17 15 27 22.4 271.4 4.7 61.7 15 1 1 537 11 04 22 11 19 55 --- 17 30 27 19.2 273.3 5.0 61.6 898 F 1 552 11 04 22 11 20 27 3C279 17 31 00 15.1 253.6 4.6 56.1 14 1 1 552 11 19 55 11 22 27 --- 17 33 00 14.7 253.9 4.6 56.2 120 F 1 555 11 19 55 11 25 06 1726+455 17 35 39 75.1 354.6 0.1 173.3 32 1 1 555 11 24 36 11 28 06 --- 17 38 39 75.0 352.5 0.2 170.8 180 F 1 558 11 24 59 11 31 23 1751+288 17 41 58 86.8 124.5 -0.2 -54.0 40 1 1 558 11 30 53 11 34 23 --- 17 44 58 87.3 132.7 -0.1 -46.1 180 F 1 561 11 31 16 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 10.989287 0.21 0851+202 20 17 58.41741 * 20 06 30.64086 20 05 09.67465 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 52.744463 0.23 1156+295 29 31 25.73874 * 29 14 43.82684 29 12 34.98941 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 09.762255 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 21 16.04731 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 31.752519 0.20 1253-055 -05 31 07.99586 *-05 47 21.52472 -05 49 32.98891 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 48.118906 0.24 1308+326 32 36 40.23883 * 32 20 43.78290 32 18 35.34772 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 39.330524 0.29 * 1726+455 45 33 04.55118 * 45 30 39.73133 45 29 55.12204 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 57.576149 0.23 * 1751+288 28 48 36.64959 * 28 48 04.93887 28 47 36.64878 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 112.3 J1159+2914 140.1 3C274 158.5 3C279 177.0 J1310+3220 140.5 1726+455 101.8 1751+288 102.4 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