COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 08 36 11 67.9 168.0 -0.3 -9.5 0 1 1 0 00 46 08 00 54 37 --- 08 44 11 68.2 173.0 -0.2 -5.5 479 F 1 3391 00 46 21 00 56 41 3C274 08 46 15 33.2 104.0 -3.7 -47.8 48 1 1 3391 00 56 11 01 11 38 --- 09 01 15 35.9 107.0 -3.5 -46.9 898 F 1 9575 00 56 24 01 12 21 3C279 09 01 58 18.6 116.3 -3.9 -42.2 2 1 1 9575 01 11 38 01 14 21 --- 09 03 58 18.9 116.7 -3.9 -42.0 120 F 1 10659 01 11 38 01 15 05 3C274 09 04 42 36.5 107.7 -3.4 -46.7 2 1 1 10659 01 14 21 01 30 02 --- 09 19 42 39.1 110.9 -3.2 -45.5 898 F 1 16933 01 14 21 01 30 46 3C279 09 20 25 21.6 120.0 -3.6 -40.5 2 1 2 16933 01 30 02 01 32 45 --- 09 22 25 21.9 120.4 -3.6 -40.3 120 R 1 17179 01 30 02 01 33 29 3C274 09 23 10 39.7 111.7 -3.1 -45.2 2 1 2 17179 01 32 45 01 48 27 --- 09 38 10 42.3 115.2 -2.9 -43.7 898 R 1 10903 01 32 45 01 49 11 3C279 09 38 54 24.5 123.9 -3.3 -38.5 2 1 2 10903 01 48 27 01 51 10 --- 09 40 54 24.8 124.3 -3.3 -38.3 120 R 1 9812 01 48 27 01 51 55 3C274 09 41 38 42.9 116.0 -2.8 -43.3 2 1 2 9812 01 51 10 02 06 52 --- 09 56 38 45.4 119.8 -2.6 -41.5 898 R 1 3533 01 51 10 02 07 36 3C279 09 57 22 27.3 127.9 -3.0 -36.3 2 1 2 3533 02 06 52 02 09 36 --- 09 59 22 27.6 128.4 -3.0 -36.0 120 R 1 2441 02 06 52 02 10 21 3C274 10 00 07 45.9 120.7 -2.5 -41.0 2 1 3 2441 02 09 36 02 25 18 --- 10 15 07 48.3 124.8 -2.3 -38.8 898 F 1 3840 02 09 36 02 26 03 3C279 10 15 52 30.0 132.2 -2.7 -33.7 2 1 3 3840 02 25 18 02 28 02 --- 10 17 52 30.2 132.7 -2.6 -33.4 120 F 1 4934 02 25 18 02 28 47 3C274 10 18 36 48.8 125.8 -2.2 -38.3 1 1 3 4934 02 28 02 02 43 44 --- 10 33 36 51.0 130.4 -2.0 -35.6 898 F 1 11214 02 28 02 02 44 29 3C279 10 34 21 32.4 136.8 -2.4 -30.9 1 1 3 11214 02 43 44 02 46 28 --- 10 36 21 32.7 137.3 -2.3 -30.6 120 F 1 12308 02 43 44 Schedule for VLBA_NL (Code Nl ) 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 10 37 05 51.5 131.5 -1.9 -34.9 1 1 4 12308 02 46 28 03 02 11 --- 10 52 05 53.5 136.5 -1.7 -31.7 898 R 1 16611 02 46 28 03 02 54 3C279 10 52 49 34.7 141.6 -2.1 -27.8 0 1 4 16611 03 02 11 03 04 54 --- 10 54 49 34.9 142.1 -2.0 -27.4 120 R 1 15521 03 02 11 03 06 54 OJ287 10 56 49 56.4 239.2 2.0 43.0 49 1 4 15521 03 06 24 03 11 53 --- 11 01 49 55.6 240.7 2.1 43.8 299 R 1 13327 03 06 37 03 13 43 J1159+2914 11 03 40 73.1 133.4 -0.9 -38.4 33 1 4 13327 03 13 13 03 18 42 =1156+295 11 08 40 73.7 136.4 -0.9 -36.1 299 R 1 11132 03 13 26 03 19 44 3C274 11 09 42 55.6 143.0 -1.4 -27.4 19 1 4 11132 03 19 14 03 34 41 --- 11 24 42 57.2 148.9 -1.1 -23.2 898 R 1 4948 03 19 27 03 35 26 3C279 11 25 26 38.1 150.7 -1.5 -21.5 0 1 4 4948 03 34 41 03 37 25 --- 11 27 26 38.2 151.3 -1.5 -21.1 120 R 1 3855 03 34 41 03 38 10 3C274 11 28 11 57.5 150.4 -1.0 -22.2 0 1 5 3855 03 37 25 03 53 08 --- 11 43 11 58.8 156.9 -0.8 -17.4 898 F 1 2426 03 37 25 03 53 52 3C279 11 43 55 39.6 156.3 -1.2 -17.6 0 1 5 2426 03 53 08 03 55 52 --- 11 45 55 39.7 156.9 -1.2 -17.1 120 F 1 3519 03 53 08 03 56 36 3C274 11 46 40 59.0 158.5 -0.7 -16.2 0 1 5 3519 03 55 52 04 11 34 --- 12 01 40 59.9 165.5 -0.5 -11.0 898 F 1 9800 03 55 52 04 12 18 3C279 12 02 24 40.8 162.1 -0.9 -13.3 0 1 5 9800 04 11 34 04 14 17 --- 12 04 24 40.9 162.7 -0.9 -12.9 120 F 1 10892 04 11 34 04 15 02 3C274 12 05 09 60.0 167.2 -0.4 -9.7 0 1 5 10892 04 14 17 04 29 59 --- 12 20 09 60.5 174.5 -0.2 -4.2 898 F 1 17170 04 14 17 04 30 43 3C279 12 20 53 41.7 168.1 -0.6 -8.9 0 1 6 17170 04 29 59 04 32 43 --- 12 22 53 41.8 168.7 -0.6 -8.4 120 R 1 16080 04 29 59 04 33 27 3C274 12 23 37 60.5 176.3 -0.1 -2.9 1 1 6 16080 04 32 43 04 48 25 --- 12 38 37 60.5 183.7 0.1 2.8 898 R 1 9801 04 32 43 04 49 09 3C279 12 39 21 42.2 174.2 -0.3 -4.3 2 1 6 9801 04 48 25 04 51 09 --- 12 41 21 42.3 174.9 -0.3 -3.8 120 R 1 8708 04 48 25 Schedule for VLBA_NL (Code Nl ) 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 12 42 06 60.5 185.4 0.2 4.1 2 1 6 8708 04 51 09 05 06 51 --- 12 57 06 60.0 192.8 0.4 9.7 898 R 1 2427 04 51 09 05 07 35 3C279 12 57 50 42.4 180.4 0.0 0.3 3 1 6 2427 05 06 51 05 09 35 --- 12 59 50 42.4 181.1 0.1 0.8 120 R 1 1334 05 06 51 05 10 19 3C274 13 00 35 59.9 194.4 0.5 11.0 4 1 7 1334 05 09 35 05 25 17 --- 13 15 35 59.0 201.4 0.7 16.2 898 F 1 4947 05 09 35 05 26 01 3C279 13 16 20 42.2 186.7 0.3 5.0 5 1 7 4947 05 25 17 05 28 01 --- 13 18 20 42.1 187.3 0.4 5.5 120 F 1 6041 05 25 17 05 30 01 J1159+2914 13 20 20 69.5 238.8 1.3 46.9 59 1 7 6041 05 29 31 05 35 00 =1156+295 13 25 20 68.6 240.8 1.4 48.2 299 F 1 8235 05 29 44 05 37 01 J1310+3220 13 27 21 80.0 200.5 0.3 18.0 88 1 7 8235 05 36 31 05 42 00 =1308+326 13 32 21 79.6 206.1 0.4 22.9 299 F 1 10430 05 36 44 05 44 47 3C274 13 35 08 57.4 210.0 1.1 22.5 117 1 7 10430 05 44 17 05 59 44 --- 13 50 08 55.9 216.1 1.3 26.7 898 F 1 16613 05 44 30 06 00 29 3C279 13 50 53 40.8 198.0 0.9 13.4 8 1 8 16613 05 59 44 06 02 28 --- 13 52 53 40.7 198.6 0.9 13.9 120 R 1 17494 05 59 44 06 03 13 3C274 13 53 37 55.5 217.4 1.4 27.6 9 1 8 17494 06 02 28 06 18 10 --- 14 08 37 53.7 222.9 1.6 31.3 898 R 1 11215 06 02 28 06 18 54 3C279 14 09 21 39.6 203.8 1.2 17.6 9 1 8 11215 06 18 10 06 20 53 --- 14 11 21 39.4 204.4 1.2 18.0 120 R 1 10126 06 18 10 06 21 37 3C274 14 12 05 53.3 224.1 1.7 32.1 10 1 8 10126 06 20 53 06 36 35 --- 14 27 05 51.2 229.1 1.9 35.3 898 R 1 3852 06 20 53 06 37 17 3C279 14 27 47 38.0 209.3 1.5 21.5 10 1 8 3852 06 36 35 06 39 17 --- 14 29 47 37.9 209.9 1.6 22.0 120 R 1 2769 06 36 35 06 40 00 3C274 14 30 30 50.8 230.2 2.0 35.9 11 1 9 2769 06 39 17 06 54 57 --- 14 45 30 48.5 234.7 2.2 38.5 898 F 1 3499 06 39 17 06 55 39 3C279 14 46 12 36.2 214.6 1.8 25.2 11 1 9 3499 06 54 57 06 57 39 --- 14 48 12 36.0 215.2 1.9 25.6 120 F 1 4575 06 54 57 Schedule for VLBA_NL (Code Nl ) 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 14 48 54 48.0 235.7 2.3 39.1 12 1 9 4575 06 57 39 07 13 18 --- 15 03 54 45.7 239.8 2.5 41.3 898 F 1 10836 06 57 39 07 13 58 3C279 15 04 35 34.2 219.6 2.1 28.5 12 1 9 10836 07 13 18 07 15 58 --- 15 06 35 33.9 220.1 2.2 28.9 120 F 1 11905 07 13 18 07 16 38 3C274 15 07 15 45.1 240.6 2.6 41.7 12 1 10 11905 07 15 58 07 31 36 --- 15 22 15 42.6 244.4 2.9 43.5 898 R 1 17042 07 15 58 07 32 15 3C279 15 22 54 31.9 224.3 2.4 31.6 12 1 10 17042 07 31 36 07 34 15 --- 15 24 54 31.6 224.8 2.5 31.9 120 R 1 15983 07 31 36 07 34 54 3C274 15 25 34 42.1 245.2 2.9 43.9 12 1 10 15983 07 34 15 07 49 51 --- 15 40 34 39.5 248.6 3.2 45.3 898 R 1 9739 07 34 15 07 50 30 3C279 15 41 13 29.4 228.7 2.7 34.3 13 1 10 9739 07 49 51 07 52 30 --- 15 43 13 29.1 229.2 2.8 34.6 120 R 1 8682 07 49 51 07 54 30 J1159+2914 15 45 13 43.3 273.3 3.8 58.5 84 1 10 8682 07 54 00 07 59 29 =1156+295 15 50 13 42.4 274.1 3.8 58.5 299 R 1 6487 07 54 13 08 00 06 J1310+3220 15 50 50 57.0 266.6 2.7 61.7 1 1 10 6487 07 59 29 08 05 05 =1308+326 15 55 50 56.1 267.5 2.8 61.8 299 R 1 4247 07 59 29 08 05 55 3C274 15 56 40 36.7 252.1 3.4 46.6 5 1 11 4247 08 05 25 08 20 53 --- 16 11 40 34.0 255.1 3.7 47.6 898 F 1 1936 08 05 38 08 21 35 3C279 16 12 23 24.8 235.8 3.3 38.3 18 1 11 1936 08 20 53 08 23 35 --- 16 14 23 24.5 236.2 3.3 38.5 120 F 1 3018 08 20 53 08 24 18 3C274 16 15 06 33.4 255.8 3.7 47.8 20 1 11 3018 08 23 35 08 39 16 --- 16 30 06 30.6 258.7 4.0 48.5 898 F 1 9291 08 23 35 08 40 00 3C279 16 30 50 21.9 239.6 3.6 40.3 21 1 11 9291 08 39 16 08 42 00 --- 16 32 50 21.6 240.0 3.6 40.5 120 F 1 10383 08 39 16 08 42 44 3C274 16 33 35 30.0 259.4 4.0 48.6 22 1 11 10383 08 42 00 08 57 42 --- 16 48 35 27.2 262.1 4.3 49.1 898 F 1 16664 08 42 00 08 58 25 3C279 16 49 19 18.9 243.3 3.9 42.1 21 1 12 16664 08 57 42 09 00 25 --- 16 51 19 18.5 243.7 3.9 42.2 120 R 1 17448 08 57 42 Schedule for VLBA_NL (Code Nl ) 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 16 52 02 26.6 262.7 4.3 49.2 21 1 12 17448 09 00 25 09 16 06 --- 17 07 02 23.8 265.4 4.6 49.6 898 R 1 11176 09 00 25 09 16 45 3C279 17 07 42 15.8 246.8 4.2 43.6 17 1 12 11176 09 16 06 09 18 45 --- 17 09 42 15.4 247.2 4.2 43.7 120 R 1 10115 09 16 06 09 19 23 3C274 17 10 20 23.2 265.9 4.7 49.6 17 1 12 10115 09 18 45 09 34 21 --- 17 25 20 20.4 268.5 4.9 49.7 898 R 1 3875 09 18 45 09 34 57 3C279 17 25 56 12.6 250.2 4.5 44.9 14 1 12 3875 09 34 21 09 36 56 --- 17 27 56 12.2 250.5 4.5 45.0 120 R 1 2838 09 34 21 09 37 33 3C274 17 28 33 19.8 269.0 5.0 49.8 15 1 13 2838 09 36 56 09 52 31 --- 17 43 33 17.0 271.5 5.2 49.7 898 F 1 3390 09 36 56 09 53 07 3C279 17 44 09 9.4 253.4 4.8 45.9 15 1 13 3390 09 52 31 09 55 07 --- 17 46 09 9.0 253.8 4.8 46.0 120 F 1 4430 09 52 31 09 55 43 3C274 17 46 46 16.4 272.1 5.3 49.7 16 1 13 4430 09 55 07 10 10 41 --- 18 01 46 13.6 274.5 5.5 49.6 898 F 1 10658 09 55 07 10 11 16 3C279 18 02 21 6.1 256.6 5.1 46.8 14 1 13 10658 10 10 41 10 13 15 --- 18 04 21 5.7 256.9 5.1 46.9 120 F 1 11689 10 10 41 10 13 50 3C274 18 04 56 13.0 275.0 5.6 49.5 14 1 14 11689 10 13 15 10 28 48 --- 18 19 56 10.3 277.5 5.8 49.2 898 R 1 17295 10 13 15 10 29 21 3C279 18 20 29 2.8 259.6 5.4 47.5 12 1 14 17295 10 28 48 10 31 20 --- 18 22 29 2.4 260.0 5.4 47.6 120 R 1 16279 10 28 48 10 33 59 1726+455 18 25 08 79.0 294.6 1.0 104.6 0 1 14 16279 10 33 29 10 36 59 --- 18 28 08 78.5 293.9 1.0 103.5 180 R 1 14882 10 33 42 10 40 17 1751+288 18 31 27 75.0 213.4 0.6 27.9 138 1 14 14882 10 39 47 10 43 16 --- 18 34 27 74.6 215.5 0.7 29.7 180 R 1 13485 10 40 00 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: 3 Station: VLBA_NL Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 2.00 Tape used at high density at 80.000 ips. Time per pass is 44.00 minutes. 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: 3 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_auto 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