COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_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 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 08 36 11 67.9 168.0 -0.3 -9.5 0 1 1 0 01 13 40 01 22 08 --- 08 44 11 68.2 173.0 -0.2 -5.5 479 F 1 3391 01 13 53 01 24 12 3C274 08 46 15 33.2 104.0 -3.7 -47.8 48 1 1 3391 01 23 42 01 39 10 --- 09 01 15 35.9 107.0 -3.5 -46.9 898 F 1 9575 01 23 55 01 39 53 3C279 09 01 58 18.6 116.3 -3.9 -42.2 2 1 1 9575 01 39 10 01 41 53 --- 09 03 58 18.9 116.7 -3.9 -42.0 120 F 1 10659 01 39 10 01 42 36 3C274 09 04 42 36.5 107.7 -3.4 -46.7 2 1 1 10659 01 41 53 01 57 34 --- 09 19 42 39.1 110.9 -3.2 -45.5 898 F 1 16933 01 41 53 01 58 17 3C279 09 20 25 21.6 120.0 -3.6 -40.5 2 1 2 16933 01 57 34 02 00 17 --- 09 22 25 21.9 120.4 -3.6 -40.3 120 R 1 17179 01 57 34 02 01 01 3C274 09 23 10 39.7 111.7 -3.1 -45.2 2 1 2 17179 02 00 17 02 15 58 --- 09 38 10 42.3 115.2 -2.9 -43.7 898 R 1 10903 02 00 17 02 16 42 3C279 09 38 54 24.5 123.9 -3.3 -38.5 2 1 2 10903 02 15 58 02 18 42 --- 09 40 54 24.8 124.3 -3.3 -38.3 120 R 1 9812 02 15 58 02 19 26 3C274 09 41 38 42.9 116.0 -2.8 -43.3 2 1 2 9812 02 18 42 02 34 24 --- 09 56 38 45.4 119.8 -2.6 -41.5 898 R 1 3533 02 18 42 02 35 08 3C279 09 57 22 27.3 127.9 -3.0 -36.3 2 1 2 3533 02 34 24 02 37 07 --- 09 59 22 27.6 128.4 -3.0 -36.0 120 R 1 2441 02 34 24 02 37 52 3C274 10 00 07 45.9 120.7 -2.5 -41.0 2 1 3 2441 02 37 07 02 52 50 --- 10 15 07 48.3 124.8 -2.3 -38.8 898 F 1 3840 02 37 07 02 53 34 3C279 10 15 52 30.0 132.2 -2.7 -33.7 2 1 3 3840 02 52 50 02 55 34 --- 10 17 52 30.2 132.7 -2.6 -33.4 120 F 1 4933 02 52 50 02 56 18 3C274 10 18 36 48.8 125.8 -2.2 -38.3 1 1 3 4933 02 55 34 03 11 16 --- 10 33 36 51.0 130.4 -2.0 -35.6 898 F 1 11214 02 55 34 03 12 00 3C279 10 34 21 32.4 136.8 -2.4 -30.9 1 1 3 11214 03 11 16 03 14 00 --- 10 36 21 32.7 137.3 -2.3 -30.6 120 F 1 12308 03 11 16 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 14 Apr 2006 Day 104 --- 03 14 44 3C274 10 37 05 51.5 131.5 -1.9 -34.9 1 1 4 12308 03 14 00 03 29 42 --- 10 52 05 53.5 136.5 -1.7 -31.7 898 R 1 16611 03 14 00 03 30 26 3C279 10 52 49 34.7 141.6 -2.1 -27.8 0 1 4 16611 03 29 42 03 32 25 --- 10 54 49 34.9 142.1 -2.0 -27.4 120 R 1 15521 03 29 42 03 34 25 OJ287 10 56 49 56.4 239.2 2.0 43.0 49 1 4 15521 03 33 55 03 39 24 --- 11 01 49 55.6 240.7 2.1 43.8 299 R 1 13327 03 34 08 03 41 15 J1159+2914 11 03 40 73.1 133.4 -0.9 -38.4 33 1 4 13327 03 40 45 03 46 14 =1156+295 11 08 40 73.7 136.4 -0.9 -36.1 299 R 1 11132 03 40 58 03 47 15 3C274 11 09 42 55.6 143.0 -1.4 -27.4 19 1 4 11132 03 46 45 04 02 13 --- 11 24 42 57.2 148.9 -1.1 -23.2 898 R 1 4948 03 46 58 04 02 57 3C279 11 25 26 38.1 150.7 -1.5 -21.5 0 1 4 4948 04 02 13 04 04 57 --- 11 27 26 38.2 151.3 -1.5 -21.1 120 R 1 3855 04 02 13 04 05 41 3C274 11 28 11 57.5 150.4 -1.0 -22.2 0 1 5 3855 04 04 57 04 20 39 --- 11 43 11 58.8 156.9 -0.8 -17.4 898 F 1 2426 04 04 57 04 21 23 3C279 11 43 55 39.6 156.3 -1.2 -17.6 0 1 5 2426 04 20 39 04 23 23 --- 11 45 55 39.7 156.9 -1.2 -17.1 120 F 1 3519 04 20 39 04 24 08 3C274 11 46 40 59.0 158.5 -0.7 -16.2 0 1 5 3519 04 23 23 04 39 05 --- 12 01 40 59.9 165.5 -0.5 -11.0 898 F 1 9800 04 23 23 04 39 49 3C279 12 02 24 40.8 162.1 -0.9 -13.3 0 1 5 9800 04 39 05 04 41 49 --- 12 04 24 40.9 162.7 -0.9 -12.9 120 F 1 10892 04 39 05 04 42 33 3C274 12 05 09 60.0 167.2 -0.4 -9.7 0 1 5 10892 04 41 49 04 57 31 --- 12 20 09 60.5 174.5 -0.2 -4.2 898 F 1 17170 04 41 49 04 58 14 3C279 12 20 53 41.7 168.1 -0.6 -8.9 0 1 6 17170 04 57 31 05 00 14 --- 12 22 53 41.8 168.7 -0.6 -8.4 120 R 1 16080 04 57 31 05 00 58 3C274 12 23 37 60.5 176.3 -0.1 -2.9 1 1 6 16080 05 00 14 05 15 56 --- 12 38 37 60.5 183.7 0.1 2.8 898 R 1 9801 05 00 14 05 16 40 3C279 12 39 21 42.2 174.2 -0.3 -4.3 2 1 6 9801 05 15 56 05 18 40 --- 12 41 21 42.3 174.9 -0.3 -3.8 120 R 1 8708 05 15 56 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 14 Apr 2006 Day 104 --- 05 19 24 3C274 12 42 06 60.5 185.4 0.2 4.1 2 1 6 8708 05 18 40 05 34 22 --- 12 57 06 60.0 192.8 0.4 9.7 898 R 1 2427 05 18 40 05 35 06 3C279 12 57 50 42.4 180.4 0.0 0.3 3 1 6 2427 05 34 22 05 37 06 --- 12 59 50 42.4 181.1 0.1 0.8 120 R 1 1334 05 34 22 05 37 51 3C274 13 00 35 59.9 194.4 0.5 11.0 4 1 7 1334 05 37 06 05 52 48 --- 13 15 35 59.0 201.4 0.7 16.2 898 F 1 4947 05 37 06 05 53 33 3C279 13 16 20 42.2 186.7 0.3 5.0 5 1 7 4947 05 52 48 05 55 32 --- 13 18 20 42.1 187.3 0.4 5.5 120 F 1 6041 05 52 48 05 57 32 J1159+2914 13 20 20 69.5 238.8 1.3 46.9 59 1 7 6041 05 57 02 06 02 31 =1156+295 13 25 20 68.6 240.8 1.4 48.2 299 F 1 8235 05 57 15 06 04 32 J1310+3220 13 27 21 80.0 200.5 0.3 18.0 88 1 7 8235 06 04 02 06 09 31 =1308+326 13 32 21 79.6 206.1 0.4 22.9 299 F 1 10430 06 04 15 06 12 18 3C274 13 35 08 57.4 210.0 1.1 22.5 117 1 7 10430 06 11 48 06 27 16 --- 13 50 08 55.9 216.1 1.3 26.7 898 F 1 16613 06 12 01 06 28 00 3C279 13 50 53 40.8 198.0 0.9 13.4 8 1 8 16613 06 27 16 06 30 00 --- 13 52 53 40.7 198.6 0.9 13.9 120 R 1 17494 06 27 16 06 30 44 3C274 13 53 37 55.5 217.4 1.4 27.6 9 1 8 17494 06 30 00 06 45 41 --- 14 08 37 53.7 222.9 1.6 31.3 898 R 1 11215 06 30 00 06 46 25 3C279 14 09 21 39.6 203.8 1.2 17.6 9 1 8 11215 06 45 41 06 48 25 --- 14 11 21 39.4 204.4 1.2 18.0 120 R 1 10126 06 45 41 06 49 08 3C274 14 12 05 53.3 224.1 1.7 32.1 10 1 8 10126 06 48 25 07 04 06 --- 14 27 05 51.2 229.1 1.9 35.3 898 R 1 3852 06 48 25 07 04 49 3C279 14 27 47 38.0 209.3 1.5 21.5 10 1 8 3852 07 04 06 07 06 48 --- 14 29 47 37.9 209.9 1.6 22.0 120 R 1 2769 07 04 06 07 07 31 3C274 14 30 30 50.8 230.2 2.0 35.9 11 1 9 2769 07 06 48 07 22 28 --- 14 45 30 48.5 234.7 2.2 38.5 898 F 1 3499 07 06 48 07 23 10 3C279 14 46 12 36.2 214.6 1.8 25.2 11 1 9 3499 07 22 28 07 25 10 --- 14 48 12 36.0 215.2 1.9 25.6 120 F 1 4575 07 22 28 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 14 Apr 2006 Day 104 --- 07 25 52 3C274 14 48 54 48.0 235.7 2.3 39.1 12 1 9 4575 07 25 10 07 40 49 --- 15 03 54 45.7 239.8 2.5 41.3 898 F 1 10836 07 25 10 07 41 30 3C279 15 04 35 34.2 219.6 2.1 28.5 12 1 9 10836 07 40 49 07 43 29 --- 15 06 35 33.9 220.1 2.2 28.9 120 F 1 11905 07 40 49 07 44 10 3C274 15 07 15 45.1 240.6 2.6 41.7 12 1 10 11905 07 43 29 07 59 07 --- 15 22 15 42.6 244.4 2.9 43.5 898 R 1 17042 07 43 29 07 59 47 3C279 15 22 54 31.9 224.3 2.4 31.6 12 1 10 17042 07 59 07 08 01 46 --- 15 24 54 31.6 224.8 2.5 31.9 120 R 1 15983 07 59 07 08 02 25 3C274 15 25 34 42.1 245.2 2.9 43.9 12 1 10 15983 08 01 46 08 17 23 --- 15 40 34 39.5 248.6 3.2 45.3 898 R 1 9739 08 01 46 08 18 02 3C279 15 41 13 29.4 228.7 2.7 34.3 13 1 10 9739 08 17 23 08 20 01 --- 15 43 13 29.1 229.2 2.8 34.6 120 R 1 8682 08 17 23 08 22 01 J1159+2914 15 45 13 43.3 273.3 3.8 58.5 84 1 10 8682 08 21 31 08 27 00 =1156+295 15 50 13 42.4 274.1 3.8 58.5 299 R 1 6487 08 21 44 08 27 37 J1310+3220 15 50 50 57.0 266.6 2.7 61.7 1 1 10 6487 08 27 00 08 32 36 =1308+326 15 55 50 56.1 267.5 2.8 61.8 299 R 1 4247 08 27 00 08 33 26 3C274 15 56 40 36.7 252.1 3.4 46.6 5 1 11 4247 08 32 56 08 48 24 --- 16 11 40 34.0 255.1 3.7 47.6 898 F 1 1936 08 33 09 08 49 07 3C279 16 12 22 24.8 235.8 3.3 38.3 18 1 11 1936 08 48 24 08 51 06 --- 16 14 22 24.5 236.2 3.3 38.5 120 F 1 3018 08 48 24 08 51 50 3C274 16 15 06 33.4 255.8 3.7 47.8 20 1 11 3018 08 51 06 09 06 47 --- 16 30 06 30.6 258.7 4.0 48.5 898 F 1 9291 08 51 06 09 07 31 3C279 16 30 50 21.9 239.6 3.6 40.3 21 1 11 9291 09 06 47 09 09 31 --- 16 32 50 21.6 240.0 3.6 40.5 120 F 1 10383 09 06 47 09 10 16 3C274 16 33 35 30.0 259.4 4.0 48.6 22 1 11 10383 09 09 31 09 25 13 --- 16 48 35 27.2 262.1 4.3 49.1 898 F 1 16664 09 09 31 09 25 57 3C279 16 49 19 18.9 243.3 3.9 42.1 21 1 12 16664 09 25 13 09 27 56 --- 16 51 19 18.5 243.7 3.9 42.2 120 R 1 17448 09 25 13 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 14 Apr 2006 Day 104 --- 09 28 39 3C274 16 52 02 26.6 262.7 4.3 49.2 21 1 12 17448 09 27 56 09 43 37 --- 17 07 02 23.8 265.4 4.6 49.6 898 R 1 11176 09 27 56 09 44 17 3C279 17 07 42 15.8 246.8 4.2 43.6 17 1 12 11176 09 43 37 09 46 16 --- 17 09 42 15.4 247.2 4.2 43.7 120 R 1 10115 09 43 37 09 46 55 3C274 17 10 20 23.2 265.9 4.7 49.6 17 1 12 10115 09 46 16 10 01 52 --- 17 25 20 20.4 268.5 4.9 49.7 898 R 1 3875 09 46 16 10 02 28 3C279 17 25 56 12.6 250.2 4.5 44.9 14 1 12 3875 10 01 52 10 04 28 --- 17 27 56 12.2 250.5 4.5 45.0 120 R 1 2838 10 01 52 10 05 04 3C274 17 28 33 19.8 269.0 5.0 49.8 15 1 13 2838 10 04 28 10 20 02 --- 17 43 33 17.0 271.5 5.2 49.7 898 F 1 3390 10 04 28 10 20 38 3C279 17 44 09 9.4 253.4 4.8 45.9 15 1 13 3390 10 20 02 10 22 38 --- 17 46 09 9.0 253.8 4.8 46.0 120 F 1 4430 10 20 02 10 23 15 3C274 17 46 46 16.4 272.0 5.3 49.7 16 1 13 4430 10 22 38 10 38 12 --- 18 01 46 13.6 274.5 5.5 49.6 898 F 1 10658 10 22 38 10 38 47 3C279 18 02 21 6.1 256.6 5.1 46.8 14 1 13 10658 10 38 12 10 40 47 --- 18 04 21 5.7 256.9 5.1 46.9 120 F 1 11689 10 38 12 10 41 22 3C274 18 04 56 13.0 275.0 5.6 49.5 14 1 14 11689 10 40 47 10 56 19 --- 18 19 56 10.3 277.5 5.8 49.2 898 R 1 17295 10 40 47 10 56 52 3C279 18 20 29 2.8 259.6 5.4 47.5 12 1 14 17295 10 56 19 10 58 52 --- 18 22 29 2.4 260.0 5.4 47.6 120 R 1 16279 10 56 19 11 01 31 1726+455 18 25 08 79.0 294.6 1.0 104.6 0 1 14 16279 11 01 01 11 04 30 --- 18 28 08 78.5 293.9 1.0 103.5 180 R 1 14882 11 01 14 11 07 48 1751+288 18 31 27 75.0 213.4 0.6 27.9 138 1 14 14882 11 07 18 11 10 47 --- 18 34 27 74.6 215.6 0.7 29.7 180 R 1 13485 11 07 31 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 10.866022 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