COVER INFORMATION Station: VLBA_HN (Code Hn ) 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_HN (Code Hn ) 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 09 54 32 64.0 213.2 1.0 25.3 0 1 1 0 00 46 08 00 54 37 --- 10 02 32 63.1 217.0 1.1 28.0 479 F 1 8 00 46 31 00 56 41 3C274 10 04 36 46.0 122.9 -2.4 -39.0 55 1 1 8 00 56 11 01 11 38 --- 10 19 36 48.3 127.2 -2.2 -36.7 898 F 1 23 00 56 34 01 12 21 3C279 10 20 19 29.8 133.8 -2.6 -32.1 0 1 1 23 01 11 38 01 14 21 --- 10 22 19 30.0 134.3 -2.6 -31.8 120 F 1 26 01 11 38 01 15 05 3C274 10 23 03 48.8 128.2 -2.1 -36.1 0 1 1 26 01 14 21 01 30 02 --- 10 38 03 50.9 132.9 -1.9 -33.3 898 F 1 41 01 14 21 01 30 46 3C279 10 38 47 32.1 138.4 -2.3 -29.3 0 1 1 41 01 30 02 01 32 45 --- 10 40 47 32.4 138.9 -2.3 -28.9 120 F 1 44 01 30 02 01 33 29 3C274 10 41 31 51.3 134.0 -1.8 -32.6 0 1 1 44 01 32 45 01 48 27 --- 10 56 31 53.2 139.1 -1.6 -29.4 898 F 1 59 01 32 45 01 49 11 3C279 10 57 15 34.2 143.2 -2.0 -26.1 0 1 1 59 01 48 27 01 51 10 --- 10 59 15 34.5 143.8 -2.0 -25.8 120 F 1 61 01 48 27 01 51 55 3C274 10 59 59 53.6 140.4 -1.5 -28.6 0 1 1 61 01 51 10 02 06 52 --- 11 14 59 55.3 146.0 -1.3 -24.8 898 F 1 77 01 51 10 02 07 36 3C279 11 15 43 36.1 148.4 -1.7 -22.7 0 1 1 77 02 06 52 02 09 36 --- 11 17 43 36.3 148.9 -1.6 -22.3 120 F 1 79 02 06 52 02 10 21 3C274 11 18 28 55.6 147.4 -1.2 -23.8 0 1 1 79 02 09 36 02 25 18 --- 11 33 28 57.0 153.5 -1.0 -19.5 898 F 1 94 02 09 36 02 26 03 3C279 11 34 13 37.8 153.7 -1.4 -19.0 0 1 1 94 02 25 18 02 28 02 --- 11 36 13 37.9 154.3 -1.3 -18.6 120 F 1 97 02 25 18 02 28 47 3C274 11 36 57 57.2 155.0 -0.9 -18.5 0 1 1 97 02 28 02 02 43 44 --- 11 51 57 58.3 161.6 -0.7 -13.7 898 F 1 112 02 28 02 02 44 29 3C279 11 52 42 39.1 159.4 -1.1 -15.0 0 1 1 112 02 43 44 02 46 28 --- 11 54 42 39.3 160.0 -1.0 -14.6 120 F 1 115 02 43 44 Schedule for VLBA_HN (Code Hn ) 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 11 55 26 58.5 163.1 -0.6 -12.5 0 1 1 115 02 46 28 03 02 11 --- 12 10 26 59.1 170.1 -0.3 -7.4 898 F 1 130 02 46 28 03 02 54 3C279 12 11 10 40.2 165.2 -0.8 -10.9 0 1 1 130 03 02 11 03 04 54 --- 12 13 10 40.3 165.8 -0.7 -10.4 120 F 1 133 03 02 11 03 06 54 OJ287 12 15 10 42.5 257.5 3.3 49.6 53 1 1 133 03 06 24 03 11 53 --- 12 20 10 41.6 258.5 3.4 49.8 299 F 1 138 03 06 47 03 13 43 J1159+2914 12 22 01 75.6 199.8 0.4 16.5 36 1 1 138 03 13 13 03 18 42 =1156+295 12 27 01 75.2 203.9 0.5 19.8 299 F 1 143 03 13 36 03 19 44 3C274 12 28 03 59.4 178.5 -0.1 -1.1 24 1 1 143 03 19 14 03 34 41 --- 12 43 03 59.3 185.7 0.2 4.3 898 F 1 158 03 19 37 03 35 26 3C279 12 43 47 41.2 175.8 -0.2 -3.1 2 1 1 158 03 34 41 03 37 25 --- 12 45 47 41.2 176.4 -0.2 -2.6 120 F 1 161 03 34 41 03 38 10 3C274 12 46 32 59.2 187.4 0.3 5.5 2 1 1 161 03 37 25 03 53 08 --- 13 01 32 58.7 194.4 0.5 10.7 898 F 1 176 03 37 25 03 53 52 3C279 13 02 16 41.2 181.9 0.1 1.4 3 1 1 176 03 53 08 03 55 52 --- 13 04 16 41.2 182.6 0.1 1.9 120 F 1 179 03 53 08 03 56 36 3C274 13 05 01 58.6 196.0 0.6 11.9 4 1 1 179 03 55 52 04 11 34 --- 13 20 01 57.6 202.7 0.8 16.8 898 F 1 194 03 55 52 04 12 18 3C279 13 20 45 40.9 188.0 0.4 5.9 5 1 1 194 04 11 34 04 14 17 --- 13 22 45 40.9 188.6 0.4 6.3 120 F 1 197 04 11 34 04 15 02 3C274 13 23 30 57.4 204.2 0.9 17.9 5 1 1 197 04 14 17 04 29 59 --- 13 38 30 56.1 210.5 1.1 22.4 898 F 1 212 04 14 17 04 30 43 3C279 13 39 14 40.3 194.0 0.7 10.2 6 1 1 212 04 29 59 04 32 43 --- 13 41 14 40.2 194.6 0.7 10.7 120 F 1 214 04 29 59 04 33 27 3C274 13 41 58 55.8 211.9 1.2 23.3 7 1 1 214 04 32 43 04 48 25 --- 13 56 58 54.2 217.7 1.4 27.3 898 F 1 230 04 32 43 04 49 09 3C279 13 57 42 39.3 199.8 1.0 14.5 8 1 1 230 04 48 25 04 51 09 --- 13 59 42 39.2 200.4 1.1 14.9 120 F 1 232 04 48 25 Schedule for VLBA_HN (Code Hn ) 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 14 00 27 53.8 219.0 1.5 28.1 9 1 1 232 04 51 09 05 06 51 --- 14 15 27 52.0 224.2 1.7 31.5 898 F 1 248 04 51 09 05 07 35 3C279 14 16 11 38.0 205.5 1.3 18.5 10 1 1 248 05 06 51 05 09 35 --- 14 18 11 37.8 206.1 1.4 18.9 120 F 1 250 05 06 51 05 10 19 3C274 14 18 56 51.6 225.4 1.8 32.3 11 1 1 250 05 09 35 05 25 17 --- 14 33 56 49.5 230.2 2.0 35.2 898 F 1 265 05 09 35 05 26 01 3C279 14 34 41 36.4 210.9 1.6 22.2 12 1 1 265 05 25 17 05 28 01 --- 14 36 41 36.2 211.5 1.7 22.6 120 F 1 268 05 25 17 05 30 01 J1159+2914 14 38 41 55.5 259.8 2.6 55.6 75 1 1 268 05 29 31 05 35 00 =1156+295 14 43 41 54.6 260.9 2.7 55.9 299 F 1 273 05 29 54 05 37 01 J1310+3220 14 45 42 68.5 248.2 1.6 53.6 87 1 1 273 05 36 31 05 42 00 =1308+326 14 50 42 67.7 249.9 1.7 54.4 299 F 1 279 05 36 54 05 44 47 3C274 14 53 29 46.7 235.9 2.4 38.4 119 1 1 279 05 44 17 05 59 44 --- 15 08 29 44.3 240.0 2.6 40.5 898 F 1 294 05 44 40 06 00 29 3C279 15 09 14 32.7 220.3 2.2 28.4 15 1 1 294 05 59 44 06 02 28 --- 15 11 14 32.5 220.8 2.2 28.8 120 F 1 296 05 59 44 06 03 13 3C274 15 11 58 43.8 240.9 2.7 40.9 16 1 1 296 06 02 28 06 18 10 --- 15 26 58 41.3 244.6 2.9 42.6 898 F 1 311 06 02 28 06 18 54 3C279 15 27 42 30.4 225.0 2.5 31.4 16 1 1 311 06 18 10 06 20 53 --- 15 29 42 30.2 225.5 2.6 31.7 120 F 1 314 06 18 10 06 21 37 3C274 15 30 26 40.8 245.4 3.0 43.0 16 1 1 314 06 20 53 06 36 35 --- 15 45 26 38.2 248.8 3.2 44.3 898 F 1 329 06 20 53 06 37 17 3C279 15 46 09 27.9 229.4 2.8 34.0 16 1 1 329 06 36 35 06 39 17 --- 15 48 09 27.7 229.9 2.9 34.2 120 F 1 332 06 36 35 06 40 00 3C274 15 48 51 37.7 249.6 3.3 44.6 17 1 1 332 06 39 17 06 54 57 --- 16 03 51 35.1 252.8 3.5 45.7 898 F 1 347 06 39 17 06 55 39 3C279 16 04 33 25.3 233.6 3.1 36.3 16 1 1 347 06 54 57 06 57 39 --- 16 06 33 25.0 234.0 3.2 36.6 120 F 1 350 06 54 57 Schedule for VLBA_HN (Code Hn ) 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 16 07 15 34.5 253.5 3.6 45.9 17 1 1 350 06 57 39 07 13 18 --- 16 22 15 31.8 256.5 3.9 46.8 898 F 1 365 06 57 39 07 13 58 3C279 16 22 56 22.5 237.6 3.4 38.4 16 1 1 365 07 13 18 07 15 58 --- 16 24 56 22.2 238.0 3.5 38.6 120 F 1 367 07 13 18 07 16 38 3C274 16 25 36 31.2 257.2 3.9 47.0 16 1 1 367 07 15 58 07 31 36 --- 16 40 36 28.5 260.0 4.2 47.6 898 F 1 382 07 15 58 07 32 15 3C279 16 41 16 19.6 241.4 3.7 40.2 16 1 1 382 07 31 36 07 34 15 --- 16 43 16 19.3 241.8 3.8 40.4 120 F 1 385 07 31 36 07 34 54 3C274 16 43 55 27.9 260.7 4.2 47.7 16 1 1 385 07 34 15 07 49 51 --- 16 58 55 25.2 263.4 4.5 48.1 898 F 1 400 07 34 15 07 50 30 3C279 16 59 34 16.7 245.0 4.1 41.8 16 1 1 400 07 49 51 07 52 30 --- 17 01 34 16.3 245.4 4.1 42.0 120 F 1 403 07 49 51 07 54 30 J1159+2914 17 03 34 29.2 284.1 5.1 54.4 88 1 1 403 07 54 00 07 59 29 =1156+295 17 08 34 28.3 284.8 5.1 54.2 299 F 1 408 07 54 23 08 00 06 J1310+3220 17 09 11 42.6 277.8 4.0 59.1 2 1 1 408 07 59 29 08 05 05 =1308+326 17 14 11 41.7 278.5 4.1 58.9 299 F 1 413 07 59 29 08 05 55 3C274 17 15 01 22.3 266.3 4.7 48.4 5 1 1 413 08 05 25 08 20 53 --- 17 30 01 19.5 268.9 5.0 48.5 898 F 1 428 08 05 48 08 21 35 3C279 17 30 44 11.4 250.8 4.6 44.0 20 1 1 428 08 20 53 08 23 35 --- 17 32 44 11.0 251.2 4.6 44.2 120 F 1 431 08 20 53 08 24 18 3C274 17 33 27 18.9 269.4 5.0 48.5 22 1 1 431 08 23 35 08 39 16 --- 17 48 27 16.2 272.0 5.3 48.5 898 F 1 446 08 23 35 08 40 00 3C279 17 49 11 8.2 254.1 4.9 45.1 22 1 1 446 08 39 16 08 42 00 --- 17 51 11 7.8 254.5 4.9 45.2 120 F 1 449 08 39 16 08 42 44 3C274 17 51 56 15.5 272.6 5.3 48.5 23 1 1 449 08 42 00 08 57 42 --- 18 06 56 12.8 275.1 5.6 48.3 898 F 1 464 08 42 00 08 58 25 3C279 18 07 40 4.9 257.4 5.2 H 45.9 22 1 1 464 08 57 42 09 00 25 --- 18 09 40 4.5 257.7 5.2 H 46.0 0 F 1 467 08 57 42 Schedule for VLBA_HN (Code Hn ) 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 18 10 23 12.2 275.7 5.7 48.2 22 1 1 467 09 00 25 09 16 06 --- 18 25 23 9.4 278.2 5.9 47.9 898 F 1 482 09 00 25 09 19 23 3C274 18 28 41 8.8 278.7 6.0 47.8 191 1 1 482 09 18 53 09 34 21 --- 18 43 41 6.1 281.2 6.2 47.3 898 F 1 497 09 19 16 09 37 33 3C274 18 46 54 5.5 281.7 6.3 47.2 185 1 1 497 09 37 03 09 52 31 --- 19 01 54 2.9 284.2 6.5 H 46.6 0 F 1 512 09 37 26 09 55 43 3C274 19 05 07 2.3 284.8 6.6 H 46.4 186 1 1 512 09 55 13 10 10 41 --- 19 20 07 -0.3 287.3 6.8 D 45.7 0 F 1 527 09 55 36 10 33 59 1726+455 19 43 29 65.7 287.9 2.3 83.8 1266 1 1 527 10 33 29 10 36 59 --- 19 46 29 65.2 288.0 2.3 83.4 180 F 1 530 10 33 52 10 40 17 1751+288 19 49 48 62.8 248.2 1.9 50.9 165 1 1 530 10 39 47 10 43 16 --- 19 52 48 62.3 249.1 2.0 51.3 180 F 1 533 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: 2 Station: VLBA_HN 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: 2 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