COVER INFORMATION Station: VLBA_KP (Code Kp ) Experiment: bw082 M87 movie pilot. Walker, Ly, Junor, Hardee Exp. Code: bw082c 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_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 14 Apr 2006 Day 104 --- 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 14 10 OJ287 07 16 02 64.8 112.1 -1.7 -56.8 0 1 1 0 01 13 40 01 22 08 --- 07 24 02 66.4 114.6 -1.5 -55.2 479 F 1 8 01 14 03 01 24 12 3C274 07 26 06 18.1 86.5 -5.1 -60.1 21 1 1 8 01 23 42 01 39 10 --- 07 41 06 21.2 88.4 -4.8 -60.3 898 F 1 23 01 24 05 01 39 53 3C279 07 41 49 6.4 101.0 -5.2 -56.8 7 1 1 23 01 39 10 01 41 53 --- 07 43 49 6.8 101.3 -5.2 -56.8 120 F 1 26 01 39 10 01 42 36 3C274 07 44 33 22.0 88.8 -4.8 -60.3 7 1 1 26 01 41 53 01 57 34 --- 07 59 33 25.2 90.8 -4.5 -60.3 898 F 1 41 01 41 53 01 58 17 3C279 08 00 16 10.3 103.6 -4.9 -56.0 8 1 1 41 01 57 34 02 00 17 --- 08 02 16 10.7 103.8 -4.9 -55.9 120 F 1 44 01 57 34 02 01 01 3C274 08 03 00 25.9 91.3 -4.5 -60.3 7 1 1 44 02 00 17 02 15 58 --- 08 18 00 29.1 93.3 -4.2 -60.1 898 F 1 59 02 00 17 02 16 42 3C279 08 18 44 14.0 106.2 -4.6 -55.0 8 1 1 59 02 15 58 02 18 42 --- 08 20 44 14.4 106.5 -4.6 -54.9 120 F 1 61 02 15 58 02 19 26 3C274 08 21 29 29.8 93.8 -4.2 -60.1 8 1 1 61 02 18 42 02 34 24 --- 08 36 29 33.0 96.0 -3.9 -59.8 898 F 1 77 02 18 42 02 35 08 3C279 08 37 13 17.8 109.0 -4.3 -53.7 8 1 1 77 02 34 24 02 37 07 --- 08 39 13 18.2 109.3 -4.3 -53.6 120 F 1 79 02 34 24 02 37 52 3C274 08 39 58 33.7 96.5 -3.9 -59.7 7 1 1 79 02 37 07 02 52 50 --- 08 54 58 36.9 98.8 -3.6 -59.1 898 F 1 94 02 37 07 02 53 34 3C279 08 55 42 21.4 111.9 -4.0 -52.3 8 1 1 94 02 52 50 02 55 34 --- 08 57 42 21.8 112.3 -4.0 -52.1 120 F 1 97 02 52 50 02 56 18 3C274 08 58 27 37.6 99.3 -3.5 -59.0 7 1 1 97 02 55 34 03 11 16 --- 09 13 27 40.7 101.8 -3.3 -58.2 898 F 1 112 02 55 34 03 12 00 3C279 09 14 12 25.0 115.1 -3.7 -50.6 7 1 1 112 03 11 16 03 14 00 --- 09 16 12 25.4 115.4 -3.7 -50.4 120 F 1 115 03 11 16 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 14 Apr 2006 Day 104 --- 03 14 44 3C274 09 16 56 41.4 102.4 -3.2 -58.0 7 1 1 115 03 14 00 03 29 42 --- 09 31 56 44.5 105.1 -3.0 -57.0 898 F 1 130 03 14 00 03 30 26 3C279 09 32 40 28.5 118.4 -3.4 -48.6 6 1 1 130 03 29 42 03 32 25 --- 09 34 40 28.9 118.8 -3.4 -48.4 120 F 1 133 03 29 42 03 34 25 OJ287 09 36 40 74.9 220.6 0.7 36.0 22 1 1 133 03 33 55 03 39 24 --- 09 41 40 74.2 224.1 0.8 38.9 299 F 1 138 03 34 18 03 41 15 J1159+2914 09 43 31 60.6 86.3 -2.3 -75.9 12 1 1 138 03 40 45 03 46 14 =1156+295 09 48 31 61.7 86.9 -2.2 -76.1 299 F 1 143 03 41 08 03 47 15 3C274 09 49 32 48.1 108.5 -2.7 -55.4 28 1 1 143 03 46 45 04 02 13 --- 10 04 32 51.1 111.8 -2.4 -53.8 898 F 1 158 03 47 08 04 02 57 3C279 10 05 17 34.4 124.9 -2.9 -44.4 5 1 1 158 04 02 13 04 04 57 --- 10 07 17 34.8 125.4 -2.8 -44.1 120 F 1 161 04 02 13 04 05 41 3C274 10 08 02 51.8 112.6 -2.4 -53.3 5 1 1 161 04 04 57 04 20 39 --- 10 23 02 54.7 116.4 -2.1 -51.1 898 F 1 176 04 04 57 04 21 23 3C279 10 23 46 37.6 129.1 -2.5 -41.4 4 1 1 176 04 20 39 04 23 23 --- 10 25 46 37.9 129.6 -2.5 -41.1 120 F 1 179 04 20 39 04 24 08 3C274 10 26 31 55.3 117.3 -2.1 -50.5 4 1 1 179 04 23 23 04 39 05 --- 10 41 31 58.1 121.7 -1.8 -47.7 898 F 1 194 04 23 23 04 39 49 3C279 10 42 15 40.5 133.7 -2.2 -38.1 3 1 1 194 04 39 05 04 41 49 --- 10 44 15 40.8 134.2 -2.2 -37.7 120 F 1 197 04 39 05 04 42 33 3C274 10 44 59 58.7 122.8 -1.8 -46.9 2 1 1 197 04 41 49 04 57 31 --- 10 59 59 61.3 127.9 -1.5 -43.2 898 F 1 212 04 41 49 04 58 14 3C279 11 00 43 43.2 138.6 -1.9 -34.3 2 1 1 212 04 57 31 05 00 14 --- 11 02 43 43.5 139.2 -1.9 -33.9 120 F 1 214 04 57 31 05 00 58 3C274 11 03 28 61.9 129.3 -1.5 -42.3 1 1 1 214 05 00 14 05 15 56 --- 11 18 28 64.2 135.5 -1.2 -37.5 898 F 1 230 05 00 14 05 16 40 3C279 11 19 12 45.7 144.1 -1.6 -30.0 1 1 1 230 05 15 56 05 18 40 --- 11 21 12 45.9 144.7 -1.6 -29.5 120 F 1 232 05 15 56 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 14 Apr 2006 Day 104 --- 05 19 24 3C274 11 21 57 64.8 137.0 -1.2 -36.3 1 1 1 232 05 18 40 05 34 22 --- 11 36 57 66.8 144.5 -0.9 -30.3 898 F 1 248 05 18 40 05 35 06 3C279 11 37 41 47.8 150.0 -1.3 -25.2 0 1 1 248 05 34 22 05 37 06 --- 11 39 41 48.0 150.7 -1.3 -24.7 120 F 1 250 05 34 22 05 37 51 3C274 11 40 26 67.2 146.4 -0.8 -28.7 0 1 1 250 05 37 06 05 52 48 --- 11 55 26 68.7 155.3 -0.6 -21.3 898 F 1 265 05 37 06 05 53 33 3C279 11 56 10 49.6 156.5 -1.0 -19.9 0 1 1 265 05 52 48 05 55 32 --- 11 58 10 49.7 157.2 -1.0 -19.3 120 F 1 268 05 52 48 05 57 32 J1159+2914 12 00 10 87.3 181.3 0.0 1.3 39 1 1 268 05 57 02 06 02 31 =1156+295 12 05 10 87.0 202.9 0.1 22.2 299 F 1 273 05 57 25 06 04 32 J1310+3220 12 07 12 76.5 84.3 -1.1 -87.2 36 1 1 273 06 04 02 06 09 31 =1308+326 12 12 12 77.6 84.5 -1.0 -87.7 299 F 1 279 06 04 25 06 12 18 3C274 12 14 59 70.0 168.4 -0.3 -10.1 105 1 1 279 06 11 48 06 27 16 --- 12 29 59 70.4 179.1 0.0 -0.7 898 F 1 294 06 12 11 06 28 00 3C279 12 30 44 51.7 169.6 -0.4 -8.9 1 1 1 294 06 27 16 06 30 00 --- 12 32 44 51.8 170.4 -0.4 -8.2 120 F 1 296 06 27 16 06 30 44 3C274 12 33 28 70.4 181.7 0.0 1.5 1 1 1 296 06 30 00 06 45 41 --- 12 48 28 70.0 192.4 0.3 10.8 898 F 1 311 06 30 00 06 46 25 3C279 12 49 12 52.2 177.0 -0.1 -2.5 2 1 1 311 06 45 41 06 48 25 --- 12 51 12 52.2 177.8 -0.1 -1.8 120 F 1 314 06 45 41 06 49 08 3C274 12 51 55 69.8 194.8 0.3 12.9 2 1 1 314 06 48 25 07 04 06 --- 13 06 55 68.7 204.8 0.6 21.3 898 F 1 329 06 48 25 07 04 49 3C279 13 07 38 52.1 184.5 0.2 3.8 4 1 1 329 07 04 06 07 06 48 --- 13 09 38 52.1 185.3 0.2 4.5 120 F 1 332 07 04 06 07 07 31 3C274 13 10 21 68.4 206.9 0.7 23.1 4 1 1 332 07 06 48 07 22 28 --- 13 25 21 66.8 215.5 0.9 30.3 898 F 1 347 07 06 48 07 23 10 3C279 13 26 03 51.6 191.9 0.5 10.1 5 1 1 347 07 22 28 07 25 10 --- 13 28 03 51.5 192.6 0.5 10.8 120 F 1 350 07 22 28 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 14 Apr 2006 Day 104 --- 07 25 52 3C274 13 28 45 66.4 217.3 1.0 31.7 6 1 1 350 07 25 10 07 40 49 --- 13 43 45 64.3 224.5 1.2 37.5 898 F 1 365 07 25 10 07 41 30 3C279 13 44 25 50.5 198.9 0.8 16.1 7 1 1 365 07 40 49 07 43 29 --- 13 46 25 50.4 199.7 0.8 16.7 120 F 1 367 07 40 49 07 44 10 3C274 13 47 06 63.8 226.0 1.3 38.6 8 1 1 367 07 43 29 07 59 07 --- 14 02 06 61.4 232.0 1.5 43.2 898 F 1 382 07 43 29 07 59 47 3C279 14 02 45 49.1 205.6 1.1 21.7 9 1 1 382 07 59 07 08 01 46 --- 14 04 45 48.9 206.3 1.1 22.2 120 F 1 385 07 59 07 08 02 25 3C274 14 05 24 60.8 233.2 1.6 44.0 9 1 1 385 08 01 46 08 17 23 --- 14 20 24 58.2 238.2 1.8 47.6 898 F 1 400 08 01 46 08 18 02 3C279 14 21 03 47.2 211.9 1.4 26.7 11 1 1 400 08 17 23 08 20 01 --- 14 23 03 47.0 212.5 1.4 27.3 120 F 1 403 08 17 23 08 22 01 J1159+2914 14 25 03 58.8 274.6 2.4 75.7 72 1 1 403 08 21 31 08 27 00 =1156+295 14 30 03 57.7 275.1 2.5 75.5 299 F 1 408 08 21 54 08 27 37 J1310+3220 14 30 40 73.1 276.5 1.3 85.8 0 1 1 408 08 27 00 08 32 36 =1308+326 14 35 40 72.1 276.8 1.4 85.4 299 F 1 413 08 27 00 08 33 26 3C274 14 36 31 55.2 242.9 2.1 50.6 10 1 1 413 08 32 56 08 48 24 --- 14 51 31 52.3 246.7 2.3 52.9 898 F 1 428 08 33 19 08 49 07 3C279 14 52 13 43.2 221.3 1.9 34.3 18 1 1 428 08 48 24 08 51 06 --- 14 54 13 43.0 221.9 2.0 34.7 120 F 1 431 08 48 24 08 51 50 3C274 14 54 57 51.6 247.5 2.4 53.4 20 1 1 431 08 51 06 09 06 47 --- 15 09 57 48.7 250.9 2.6 55.2 898 F 1 446 08 51 06 09 07 31 3C279 15 10 41 40.5 226.3 2.2 38.1 22 1 1 446 09 06 47 09 09 31 --- 15 12 41 40.2 226.8 2.3 38.5 120 F 1 449 09 06 47 09 10 16 3C274 15 13 26 48.0 251.6 2.7 55.5 22 1 1 449 09 09 31 09 25 13 --- 15 28 26 44.9 254.6 3.0 56.9 898 F 1 464 09 09 31 09 25 57 3C279 15 29 09 37.6 230.9 2.5 41.4 22 1 1 464 09 25 13 09 27 56 --- 15 31 09 37.3 231.3 2.6 41.8 120 F 1 467 09 25 13 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 14 Apr 2006 Day 104 --- 09 28 39 3C274 15 31 53 44.2 255.2 3.0 57.1 21 1 1 467 09 27 56 09 43 37 --- 15 46 53 41.1 257.9 3.3 58.1 898 F 1 482 09 27 56 09 44 17 3C279 15 47 32 34.5 235.0 2.9 44.3 18 1 1 482 09 43 37 09 46 16 --- 15 49 32 34.1 235.4 2.9 44.6 120 F 1 484 09 43 37 09 46 55 3C274 15 50 11 40.4 258.4 3.3 58.3 17 1 1 484 09 46 16 10 01 52 --- 16 05 11 37.3 260.9 3.6 59.0 898 F 1 499 09 46 16 10 02 28 3C279 16 05 47 31.2 238.8 3.2 46.8 15 1 1 499 10 01 52 10 04 28 --- 16 07 47 30.9 239.2 3.2 47.1 120 F 1 502 10 01 52 10 05 04 3C274 16 08 24 36.6 261.4 3.6 59.2 16 1 1 502 10 04 28 10 20 02 --- 16 23 24 33.5 263.7 3.9 59.7 898 F 1 517 10 04 28 10 20 38 3C279 16 24 00 27.9 242.3 3.5 49.0 16 1 1 517 10 20 02 10 22 38 --- 16 26 00 27.5 242.6 3.5 49.2 120 F 1 520 10 20 02 10 23 15 3C274 16 26 37 32.8 264.1 3.9 59.8 16 1 1 520 10 22 38 10 38 12 --- 16 41 37 29.6 266.3 4.2 60.1 898 F 1 535 10 22 38 10 38 47 3C279 16 42 12 24.4 245.5 3.8 50.9 15 1 1 535 10 38 12 10 40 47 --- 16 44 12 24.0 245.9 3.8 51.1 120 F 1 537 10 38 12 10 41 22 3C274 16 44 47 29.0 266.7 4.2 60.1 15 1 1 537 10 40 47 10 56 19 --- 16 59 47 25.8 268.8 4.5 60.3 898 F 1 552 10 40 47 10 56 52 3C279 17 00 20 20.9 248.5 4.1 52.5 13 1 1 552 10 56 19 10 58 52 --- 17 02 20 20.5 248.9 4.1 52.7 120 F 1 555 10 56 19 11 01 31 1726+455 17 04 59 75.8 376.3 -0.4 -160.1 43 1 1 555 11 01 01 11 04 30 --- 17 07 59 75.9 374.3 -0.3 -162.6 180 F 1 558 11 01 24 11 07 48 1751+288 17 11 18 80.3 106.2 -0.7 -68.4 13 1 1 558 11 07 18 11 10 47 --- 17 14 18 80.9 107.7 -0.7 -67.3 180 F 1 561 11 07 41 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 10.866022 0.21 0851+202 20 17 58.41741 * 20 06 30.64086 20 05 10.19179 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 52.700672 0.23 1156+295 29 31 25.73874 * 29 14 43.82684 29 12 36.13857 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 09.742905 0.31 1228+126 12 40 01.74901 * 12 23 28.04383 12 21 16.71264 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 31.749447 0.20 1253-055 -05 31 07.99586 *-05 47 21.52472 -05 49 32.95757 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 48.121939 0.24 1308+326 32 36 40.23883 * 32 20 43.78290 32 18 36.65081 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 39.510219 0.29 * 1726+455 45 33 04.55118 * 45 30 39.73133 45 29 56.02484 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 57.730499 0.23 * 1751+288 28 48 36.64959 * 28 48 04.93887 28 47 37.28540 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 106.4 J1159+2914 135.8 3C274 153.9 3C279 171.1 J1310+3220 138.1 1726+455 103.6 1751+288 105.8 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