COVER INFORMATION Station: VLBA_KP (Code Kp ) 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_KP (Code Kp ) 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 16 02 64.8 112.1 -1.7 -56.8 0 1 1 0 00 46 08 00 54 37 --- 07 24 02 66.4 114.6 -1.5 -55.2 479 F 1 8 00 46 31 00 56 41 3C274 07 26 06 18.1 86.5 -5.1 -60.1 21 1 1 8 00 56 11 01 11 38 --- 07 41 06 21.2 88.4 -4.8 -60.3 898 F 1 23 00 56 34 01 12 21 3C279 07 41 49 6.4 101.0 -5.2 -56.8 7 1 1 23 01 11 38 01 14 21 --- 07 43 49 6.8 101.3 -5.2 -56.8 120 F 1 26 01 11 38 01 15 05 3C274 07 44 33 22.0 88.8 -4.8 -60.3 7 1 1 26 01 14 21 01 30 02 --- 07 59 33 25.2 90.8 -4.5 -60.3 898 F 1 41 01 14 21 01 30 46 3C279 08 00 16 10.3 103.6 -4.9 -56.0 8 1 1 41 01 30 02 01 32 45 --- 08 02 16 10.7 103.8 -4.9 -55.9 120 F 1 44 01 30 02 01 33 29 3C274 08 03 00 25.9 91.3 -4.5 -60.3 7 1 1 44 01 32 45 01 48 27 --- 08 18 00 29.1 93.3 -4.2 -60.1 898 F 1 59 01 32 45 01 49 11 3C279 08 18 44 14.0 106.2 -4.6 -55.0 8 1 1 59 01 48 27 01 51 10 --- 08 20 44 14.4 106.5 -4.6 -54.9 120 F 1 61 01 48 27 01 51 55 3C274 08 21 29 29.8 93.8 -4.2 -60.1 8 1 1 61 01 51 10 02 06 52 --- 08 36 29 33.0 96.0 -3.9 -59.8 898 F 1 77 01 51 10 02 07 36 3C279 08 37 13 17.8 109.0 -4.3 -53.7 8 1 1 77 02 06 52 02 09 36 --- 08 39 13 18.2 109.3 -4.3 -53.6 120 F 1 79 02 06 52 02 10 21 3C274 08 39 58 33.7 96.5 -3.9 -59.7 7 1 1 79 02 09 36 02 25 18 --- 08 54 58 36.9 98.8 -3.6 -59.1 898 F 1 94 02 09 36 02 26 03 3C279 08 55 42 21.4 111.9 -4.0 -52.3 8 1 1 94 02 25 18 02 28 02 --- 08 57 42 21.8 112.3 -4.0 -52.1 120 F 1 97 02 25 18 02 28 47 3C274 08 58 27 37.6 99.3 -3.5 -59.0 7 1 1 97 02 28 02 02 43 44 --- 09 13 27 40.7 101.8 -3.3 -58.2 898 F 1 112 02 28 02 02 44 29 3C279 09 14 12 25.0 115.1 -3.7 -50.6 7 1 1 112 02 43 44 02 46 28 --- 09 16 12 25.4 115.4 -3.7 -50.4 120 F 1 115 02 43 44 Schedule for VLBA_KP (Code Kp ) 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 16 56 41.4 102.4 -3.2 -58.0 7 1 1 115 02 46 28 03 02 11 --- 09 31 56 44.5 105.1 -3.0 -57.0 898 F 1 130 02 46 28 03 02 54 3C279 09 32 40 28.5 118.4 -3.4 -48.6 6 1 1 130 03 02 11 03 04 54 --- 09 34 40 28.9 118.8 -3.4 -48.4 120 F 1 133 03 02 11 03 06 54 OJ287 09 36 40 74.9 220.6 0.7 36.0 22 1 1 133 03 06 24 03 11 53 --- 09 41 40 74.2 224.1 0.8 38.9 299 F 1 138 03 06 47 03 13 43 J1159+2914 09 43 31 60.6 86.3 -2.3 -75.9 12 1 1 138 03 13 13 03 18 42 =1156+295 09 48 31 61.7 86.9 -2.2 -76.1 299 F 1 143 03 13 36 03 19 44 3C274 09 49 32 48.1 108.5 -2.7 -55.4 28 1 1 143 03 19 14 03 34 41 --- 10 04 32 51.1 111.8 -2.4 -53.8 898 F 1 158 03 19 37 03 35 26 3C279 10 05 17 34.4 124.9 -2.9 -44.4 5 1 1 158 03 34 41 03 37 25 --- 10 07 17 34.8 125.4 -2.8 -44.1 120 F 1 161 03 34 41 03 38 10 3C274 10 08 02 51.8 112.6 -2.4 -53.3 5 1 1 161 03 37 25 03 53 08 --- 10 23 02 54.7 116.4 -2.1 -51.1 898 F 1 176 03 37 25 03 53 52 3C279 10 23 46 37.6 129.1 -2.5 -41.4 4 1 1 176 03 53 08 03 55 52 --- 10 25 46 37.9 129.6 -2.5 -41.1 120 F 1 179 03 53 08 03 56 36 3C274 10 26 31 55.3 117.3 -2.1 -50.5 4 1 1 179 03 55 52 04 11 34 --- 10 41 31 58.1 121.7 -1.8 -47.7 898 F 1 194 03 55 52 04 12 18 3C279 10 42 15 40.5 133.7 -2.2 -38.1 3 1 1 194 04 11 34 04 14 17 --- 10 44 15 40.8 134.2 -2.2 -37.7 120 F 1 197 04 11 34 04 15 02 3C274 10 44 59 58.7 122.8 -1.8 -46.9 2 1 1 197 04 14 17 04 29 59 --- 10 59 59 61.3 127.9 -1.5 -43.2 898 F 1 212 04 14 17 04 30 43 3C279 11 00 43 43.2 138.6 -1.9 -34.3 2 1 1 212 04 29 59 04 32 43 --- 11 02 43 43.5 139.2 -1.9 -33.9 120 F 1 214 04 29 59 04 33 27 3C274 11 03 28 61.9 129.3 -1.5 -42.3 1 1 1 214 04 32 43 04 48 25 --- 11 18 28 64.2 135.5 -1.2 -37.5 898 F 1 230 04 32 43 04 49 09 3C279 11 19 12 45.7 144.1 -1.6 -30.0 1 1 1 230 04 48 25 04 51 09 --- 11 21 12 45.9 144.7 -1.6 -29.5 120 F 1 232 04 48 25 Schedule for VLBA_KP (Code Kp ) 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 21 57 64.8 137.0 -1.2 -36.3 1 1 1 232 04 51 09 05 06 51 --- 11 36 57 66.8 144.5 -0.9 -30.3 898 F 1 248 04 51 09 05 07 35 3C279 11 37 41 47.8 150.0 -1.3 -25.2 0 1 1 248 05 06 51 05 09 35 --- 11 39 41 48.0 150.7 -1.3 -24.7 120 F 1 250 05 06 51 05 10 19 3C274 11 40 26 67.2 146.4 -0.8 -28.7 0 1 1 250 05 09 35 05 25 17 --- 11 55 26 68.7 155.3 -0.6 -21.3 898 F 1 265 05 09 35 05 26 01 3C279 11 56 10 49.6 156.5 -1.0 -19.9 0 1 1 265 05 25 17 05 28 01 --- 11 58 10 49.7 157.2 -1.0 -19.3 120 F 1 268 05 25 17 05 30 01 J1159+2914 12 00 10 87.3 181.4 0.0 1.3 39 1 1 268 05 29 31 05 35 00 =1156+295 12 05 10 87.0 202.9 0.1 22.2 299 F 1 273 05 29 54 05 37 01 J1310+3220 12 07 12 76.5 84.3 -1.1 -87.2 36 1 1 273 05 36 31 05 42 00 =1308+326 12 12 12 77.6 84.5 -1.0 -87.7 299 F 1 279 05 36 54 05 44 47 3C274 12 14 59 70.0 168.4 -0.3 -10.1 105 1 1 279 05 44 17 05 59 44 --- 12 29 59 70.4 179.1 0.0 -0.7 898 F 1 294 05 44 40 06 00 29 3C279 12 30 44 51.7 169.6 -0.4 -8.9 1 1 1 294 05 59 44 06 02 28 --- 12 32 44 51.8 170.4 -0.4 -8.2 120 F 1 296 05 59 44 06 03 13 3C274 12 33 28 70.4 181.7 0.0 1.5 1 1 1 296 06 02 28 06 18 10 --- 12 48 28 70.0 192.4 0.3 10.8 898 F 1 311 06 02 28 06 18 54 3C279 12 49 12 52.2 177.0 -0.1 -2.5 2 1 1 311 06 18 10 06 20 53 --- 12 51 12 52.2 177.8 -0.1 -1.8 120 F 1 314 06 18 10 06 21 37 3C274 12 51 55 69.8 194.8 0.3 12.9 2 1 1 314 06 20 53 06 36 35 --- 13 06 55 68.7 204.8 0.6 21.3 898 F 1 329 06 20 53 06 37 17 3C279 13 07 38 52.1 184.5 0.2 3.8 4 1 1 329 06 36 35 06 39 17 --- 13 09 38 52.1 185.3 0.2 4.5 120 F 1 332 06 36 35 06 40 00 3C274 13 10 21 68.4 206.9 0.7 23.1 4 1 1 332 06 39 17 06 54 57 --- 13 25 21 66.8 215.5 0.9 30.3 898 F 1 347 06 39 17 06 55 39 3C279 13 26 03 51.6 191.9 0.5 10.1 5 1 1 347 06 54 57 06 57 39 --- 13 28 03 51.5 192.6 0.5 10.8 120 F 1 350 06 54 57 Schedule for VLBA_KP (Code Kp ) 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 28 45 66.4 217.3 1.0 31.7 6 1 1 350 06 57 39 07 13 18 --- 13 43 45 64.3 224.5 1.2 37.5 898 F 1 365 06 57 39 07 13 58 3C279 13 44 25 50.5 198.9 0.8 16.1 7 1 1 365 07 13 18 07 15 58 --- 13 46 25 50.4 199.7 0.8 16.7 120 F 1 367 07 13 18 07 16 38 3C274 13 47 06 63.8 226.0 1.3 38.6 8 1 1 367 07 15 58 07 31 36 --- 14 02 06 61.4 232.0 1.5 43.2 898 F 1 382 07 15 58 07 32 15 3C279 14 02 45 49.1 205.6 1.1 21.7 9 1 1 382 07 31 36 07 34 15 --- 14 04 45 48.9 206.3 1.1 22.2 120 F 1 385 07 31 36 07 34 54 3C274 14 05 24 60.8 233.2 1.6 44.0 9 1 1 385 07 34 15 07 49 51 --- 14 20 24 58.2 238.2 1.8 47.6 898 F 1 400 07 34 15 07 50 30 3C279 14 21 03 47.2 211.9 1.4 26.7 11 1 1 400 07 49 51 07 52 30 --- 14 23 03 47.0 212.5 1.4 27.3 120 F 1 403 07 49 51 07 54 30 J1159+2914 14 25 03 58.8 274.6 2.4 75.7 72 1 1 403 07 54 00 07 59 29 =1156+295 14 30 03 57.7 275.1 2.5 75.5 299 F 1 408 07 54 23 08 00 06 J1310+3220 14 30 40 73.1 276.5 1.3 85.8 0 1 1 408 07 59 29 08 05 05 =1308+326 14 35 40 72.1 276.8 1.4 85.4 299 F 1 413 07 59 29 08 05 55 3C274 14 36 31 55.2 242.9 2.1 50.6 10 1 1 413 08 05 25 08 20 53 --- 14 51 31 52.3 246.7 2.3 52.9 898 F 1 428 08 05 48 08 21 35 3C279 14 52 13 43.2 221.3 1.9 34.3 18 1 1 428 08 20 53 08 23 35 --- 14 54 13 43.0 221.9 2.0 34.7 120 F 1 431 08 20 53 08 24 18 3C274 14 54 57 51.6 247.5 2.4 53.4 20 1 1 431 08 23 35 08 39 16 --- 15 09 57 48.7 250.9 2.6 55.2 898 F 1 446 08 23 35 08 40 00 3C279 15 10 41 40.5 226.3 2.2 38.1 22 1 1 446 08 39 16 08 42 00 --- 15 12 41 40.2 226.8 2.3 38.5 120 F 1 449 08 39 16 08 42 44 3C274 15 13 26 48.0 251.6 2.7 55.5 22 1 1 449 08 42 00 08 57 42 --- 15 28 26 44.9 254.6 3.0 56.9 898 F 1 464 08 42 00 08 58 25 3C279 15 29 09 37.6 230.9 2.5 41.4 22 1 1 464 08 57 42 09 00 25 --- 15 31 09 37.3 231.3 2.6 41.8 120 F 1 467 08 57 42 Schedule for VLBA_KP (Code Kp ) 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 15 31 53 44.2 255.2 3.0 57.1 21 1 1 467 09 00 25 09 16 06 --- 15 46 53 41.1 257.9 3.3 58.1 898 F 1 482 09 00 25 09 16 45 3C279 15 47 32 34.5 235.0 2.9 44.3 18 1 1 482 09 16 06 09 18 45 --- 15 49 32 34.1 235.4 2.9 44.6 120 F 1 484 09 16 06 09 19 23 3C274 15 50 11 40.4 258.4 3.3 58.3 17 1 1 484 09 18 45 09 34 21 --- 16 05 11 37.3 260.9 3.6 59.0 898 F 1 499 09 18 45 09 34 57 3C279 16 05 47 31.2 238.8 3.2 46.8 15 1 1 499 09 34 21 09 36 56 --- 16 07 47 30.9 239.2 3.2 47.1 120 F 1 502 09 34 21 09 37 33 3C274 16 08 24 36.6 261.4 3.6 59.2 16 1 1 502 09 36 56 09 52 31 --- 16 23 24 33.5 263.7 3.9 59.7 898 F 1 517 09 36 56 09 53 07 3C279 16 24 00 27.9 242.3 3.5 49.0 16 1 1 517 09 52 31 09 55 07 --- 16 26 00 27.5 242.6 3.5 49.2 120 F 1 520 09 52 31 09 55 43 3C274 16 26 37 32.8 264.1 3.9 59.8 16 1 1 520 09 55 07 10 10 41 --- 16 41 37 29.6 266.3 4.2 60.1 898 F 1 535 09 55 07 10 11 16 3C279 16 42 12 24.4 245.5 3.8 50.9 15 1 1 535 10 10 41 10 13 15 --- 16 44 12 24.0 245.9 3.8 51.1 120 F 1 537 10 10 41 10 13 50 3C274 16 44 47 29.0 266.7 4.2 60.1 15 1 1 537 10 13 15 10 28 48 --- 16 59 47 25.8 268.8 4.5 60.3 898 F 1 552 10 13 15 10 29 21 3C279 17 00 20 20.9 248.5 4.1 52.5 13 1 1 552 10 28 48 10 31 20 --- 17 02 20 20.5 248.9 4.1 52.7 120 F 1 555 10 28 48 10 33 59 1726+455 17 04 59 75.8 376.4 -0.4 -160.1 43 1 1 555 10 33 29 10 36 59 --- 17 07 59 75.9 374.3 -0.3 -162.6 180 F 1 558 10 33 52 10 40 17 1751+288 17 11 18 80.3 106.2 -0.7 -68.4 13 1 1 558 10 39 47 10 43 16 --- 17 14 18 80.9 107.7 -0.7 -67.3 180 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: 7 Station: VLBA_KP 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: 7 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