COVER INFORMATION Station: VLBA_PT (Code Pt ) 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_PT (Code Pt ) 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 30 00 66.4 121.5 -1.4 -48.6 0 1 1 0 01 13 40 01 22 08 --- 07 38 00 67.8 124.8 -1.3 -46.2 479 F 1 3391 01 13 53 01 24 12 3C274 07 40 04 21.1 89.2 -4.9 -57.7 25 1 1 3391 01 23 42 01 39 10 --- 07 55 04 24.2 91.3 -4.6 -57.7 898 F 1 9575 01 23 55 01 39 53 3C279 07 55 47 8.8 103.3 -5.0 -53.9 6 1 1 9575 01 39 10 01 41 53 --- 07 57 47 9.2 103.6 -5.0 -53.8 120 F 1 10659 01 39 10 01 42 36 3C274 07 58 31 24.9 91.8 -4.5 -57.7 6 1 1 10659 01 41 53 01 57 34 --- 08 13 31 28.0 94.0 -4.3 -57.5 898 F 1 16933 01 41 53 01 58 17 3C279 08 14 15 12.5 106.1 -4.7 -52.9 7 1 2 16933 01 57 34 02 00 17 --- 08 16 15 12.9 106.4 -4.7 -52.8 120 R 1 17179 01 57 34 02 01 01 3C274 08 16 59 28.7 94.5 -4.2 -57.5 6 1 2 17179 02 00 17 02 15 58 --- 08 31 59 31.8 96.8 -4.0 -57.1 898 R 1 10903 02 00 17 02 16 42 3C279 08 32 43 16.1 109.0 -4.4 -51.7 7 1 2 10903 02 15 58 02 18 42 --- 08 34 43 16.5 109.3 -4.4 -51.6 120 R 1 9812 02 15 58 02 19 26 3C274 08 35 27 32.5 97.3 -3.9 -57.0 6 1 2 9812 02 18 42 02 34 24 --- 08 50 27 35.5 99.7 -3.7 -56.5 898 R 1 3533 02 18 42 02 35 08 3C279 08 51 12 19.7 112.0 -4.1 -50.3 7 1 2 3533 02 34 24 02 37 07 --- 08 53 12 20.1 112.3 -4.1 -50.2 120 R 1 2441 02 34 24 02 37 52 3C274 08 53 56 36.3 100.3 -3.6 -56.3 6 1 3 2441 02 37 07 02 52 50 --- 09 08 56 39.3 102.9 -3.4 -55.5 898 F 1 3840 02 37 07 02 53 34 3C279 09 09 41 23.2 115.2 -3.8 -48.7 6 1 3 3840 02 52 50 02 55 34 --- 09 11 41 23.6 115.6 -3.7 -48.5 120 F 1 4933 02 52 50 02 56 18 3C274 09 12 25 40.0 103.5 -3.3 -55.3 6 1 3 4933 02 55 34 03 11 16 --- 09 27 25 43.0 106.4 -3.1 -54.2 898 F 1 11214 02 55 34 03 12 00 3C279 09 28 10 26.6 118.6 -3.5 -46.8 6 1 3 11214 03 11 16 03 14 00 --- 09 30 10 27.0 119.0 -3.4 -46.6 120 F 1 12308 03 11 16 Schedule for VLBA_PT (Code Pt ) 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 30 55 43.7 107.1 -3.0 -53.9 5 1 4 12308 03 14 00 03 29 42 --- 09 45 55 46.6 110.2 -2.8 -52.5 898 R 1 16611 03 14 00 03 30 26 3C279 09 46 39 29.9 122.3 -3.2 -44.6 4 1 4 16611 03 29 42 03 32 25 --- 09 48 39 30.2 122.7 -3.1 -44.3 120 R 1 15521 03 29 42 03 34 25 OJ287 09 50 39 71.2 224.4 0.9 38.0 32 1 4 15521 03 33 55 03 39 24 --- 09 55 39 70.5 227.1 1.0 40.1 299 R 1 13327 03 34 08 03 41 15 J1159+2914 09 57 29 63.6 92.6 -2.0 -71.0 15 1 4 13327 03 40 45 03 46 14 =1156+295 10 02 29 64.6 93.4 -2.0 -70.9 299 R 1 11132 03 40 58 03 47 15 3C274 10 03 31 50.0 114.2 -2.5 -50.5 26 1 4 11132 03 46 45 04 02 13 --- 10 18 31 52.8 118.0 -2.2 -48.3 898 R 1 4948 03 46 58 04 02 57 3C279 10 19 15 35.4 129.4 -2.6 -39.9 3 1 4 4948 04 02 13 04 04 57 --- 10 21 15 35.7 129.9 -2.6 -39.6 120 R 1 3855 04 02 13 04 05 41 3C274 10 22 00 53.4 118.9 -2.2 -47.7 3 1 5 3855 04 04 57 04 20 39 --- 10 37 00 56.0 123.3 -1.9 -45.0 898 F 1 2426 04 04 57 04 21 23 3C279 10 37 44 38.2 133.9 -2.3 -36.8 3 1 5 2426 04 20 39 04 23 23 --- 10 39 44 38.5 134.4 -2.3 -36.4 120 F 1 3519 04 20 39 04 24 08 3C274 10 40 29 56.6 124.4 -1.8 -44.2 2 1 5 3519 04 23 23 04 39 05 --- 10 55 29 59.1 129.5 -1.6 -40.7 898 F 1 9800 04 23 23 04 39 49 3C279 10 56 13 40.8 138.8 -2.0 -33.2 2 1 5 9800 04 39 05 04 41 49 --- 10 58 13 41.1 139.3 -2.0 -32.8 120 F 1 10892 04 39 05 04 42 33 3C274 10 58 58 59.7 130.8 -1.5 -39.8 1 1 5 10892 04 41 49 04 57 31 --- 11 13 58 61.9 136.7 -1.3 -35.4 898 F 1 17170 04 41 49 04 58 14 3C279 11 14 42 43.2 144.1 -1.7 -29.2 0 1 6 17170 04 57 31 05 00 14 --- 11 16 42 43.5 144.7 -1.7 -28.7 120 R 1 16080 04 57 31 05 00 58 3C274 11 17 26 62.4 138.2 -1.2 -34.3 0 1 6 16080 05 00 14 05 15 56 --- 11 32 26 64.3 145.2 -1.0 -28.9 898 R 1 9801 05 00 14 05 16 40 3C279 11 33 10 45.3 149.8 -1.4 -24.7 0 1 6 9801 05 15 56 05 18 40 --- 11 35 10 45.5 150.4 -1.4 -24.2 120 R 1 8708 05 15 56 Schedule for VLBA_PT (Code Pt ) 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 35 55 64.7 146.9 -0.9 -27.5 0 1 6 8708 05 18 40 05 34 22 --- 11 50 55 66.2 155.0 -0.7 -21.0 898 R 1 2427 05 18 40 05 35 06 3C279 11 51 40 47.0 155.9 -1.1 -19.8 0 1 6 2427 05 34 22 05 37 06 --- 11 53 40 47.2 156.6 -1.0 -19.2 120 R 1 1334 05 34 22 05 37 51 3C274 11 54 24 66.5 157.0 -0.6 -19.3 0 1 7 1334 05 37 06 05 52 48 --- 12 09 24 67.5 166.0 -0.4 -11.8 898 F 1 4947 05 37 06 05 53 33 3C279 12 10 09 48.4 162.5 -0.8 -14.5 0 1 7 4947 05 52 48 05 55 32 --- 12 12 09 48.5 163.2 -0.7 -13.9 120 F 1 6041 05 52 48 05 57 32 J1159+2914 12 14 09 84.1 211.7 0.2 29.9 43 1 7 6041 05 57 02 06 02 31 =1156+295 12 19 09 83.5 220.1 0.3 37.6 299 F 1 8235 05 57 15 06 04 32 J1310+3220 12 21 10 79.4 97.4 -0.8 -75.8 33 1 7 8235 06 04 02 06 09 31 =1308+326 12 26 10 80.5 98.9 -0.7 -74.9 299 F 1 10430 06 04 15 06 12 18 3C274 12 28 58 68.0 178.6 0.0 -1.2 108 1 7 10430 06 11 48 06 27 16 --- 12 43 58 67.9 188.3 0.2 7.0 898 F 1 16613 06 12 01 06 28 00 3C279 12 44 42 49.8 175.4 -0.2 -3.8 2 1 8 16613 06 27 16 06 30 00 --- 12 46 42 49.8 176.2 -0.2 -3.1 120 R 1 17494 06 27 16 06 30 44 3C274 12 47 26 67.7 190.5 0.3 8.9 2 1 8 17494 06 30 00 06 45 41 --- 13 02 26 66.9 199.8 0.5 16.7 898 R 1 11215 06 30 00 06 46 25 3C279 13 03 10 49.8 182.6 0.1 2.1 3 1 8 11215 06 45 41 06 48 25 --- 13 05 10 49.8 183.3 0.1 2.8 120 R 1 10126 06 45 41 06 49 08 3C274 13 05 54 66.7 201.9 0.6 18.4 4 1 8 10126 06 48 25 07 04 06 --- 13 20 54 65.3 210.2 0.8 25.2 898 R 1 3852 06 48 25 07 04 49 3C279 13 21 37 49.4 189.6 0.4 8.0 5 1 8 3852 07 04 06 07 06 48 --- 13 23 37 49.4 190.4 0.5 8.6 120 R 1 2769 07 04 06 07 07 31 3C274 13 24 19 64.9 212.0 0.9 26.6 5 1 9 2769 07 06 48 07 22 28 --- 13 39 19 63.1 219.3 1.1 32.4 898 F 1 3499 07 06 48 07 23 10 3C279 13 40 01 48.6 196.5 0.7 13.6 7 1 9 3499 07 22 28 07 25 10 --- 13 42 01 48.5 197.2 0.8 14.2 120 F 1 4575 07 22 28 Schedule for VLBA_PT (Code Pt ) 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 42 43 62.7 220.8 1.2 33.6 7 1 9 4575 07 25 10 07 40 49 --- 13 57 43 60.5 227.1 1.4 38.3 898 F 1 10836 07 25 10 07 41 30 3C279 13 58 24 47.3 203.0 1.0 19.0 8 1 9 10836 07 40 49 07 43 29 --- 14 00 24 47.1 203.7 1.1 19.5 120 F 1 11905 07 40 49 07 44 10 3C274 14 01 04 60.0 228.4 1.5 39.2 9 1 10 11905 07 43 29 07 59 07 --- 14 16 04 57.6 233.7 1.7 43.0 898 R 1 17042 07 43 29 07 59 47 3C279 14 16 44 45.6 209.2 1.3 23.9 9 1 10 17042 07 59 07 08 01 46 --- 14 18 44 45.4 209.8 1.4 24.4 120 R 1 15983 07 59 07 08 02 25 3C274 14 19 23 57.1 234.8 1.8 43.7 10 1 10 15983 08 01 46 08 17 23 --- 14 34 23 54.5 239.4 2.1 46.7 898 R 1 9739 08 01 46 08 18 02 3C279 14 35 02 43.6 214.9 1.6 28.4 11 1 10 9739 08 17 23 08 20 01 --- 14 37 02 43.4 215.5 1.7 28.9 120 R 1 8682 08 17 23 08 22 01 J1159+2914 14 39 02 56.0 272.6 2.7 71.0 76 1 10 8682 08 21 31 08 27 00 =1156+295 14 44 02 55.0 273.2 2.7 70.9 299 R 1 6487 08 21 44 08 27 37 J1310+3220 14 44 39 70.3 270.8 1.6 77.8 0 1 10 6487 08 27 00 08 32 36 =1308+326 14 49 39 69.3 271.4 1.6 77.7 299 R 1 4247 08 27 00 08 33 26 3C274 14 50 29 51.5 243.8 2.3 49.3 9 1 11 4247 08 32 56 08 48 24 --- 15 05 29 48.7 247.4 2.6 51.3 898 F 1 1936 08 33 09 08 49 07 3C279 15 06 12 39.5 223.7 2.2 35.0 18 1 11 1936 08 48 24 08 51 06 --- 15 08 12 39.2 224.3 2.2 35.4 120 F 1 3018 08 48 24 08 51 50 3C274 15 08 55 48.1 248.2 2.6 51.7 20 1 11 3018 08 51 06 09 06 47 --- 15 23 55 45.1 251.4 2.9 53.3 898 F 1 9291 08 51 06 09 07 31 3C279 15 24 39 36.8 228.4 2.5 38.4 22 1 11 9291 09 06 47 09 09 31 --- 15 26 39 36.5 228.9 2.5 38.7 120 F 1 10383 09 06 47 09 10 16 3C274 15 27 24 44.5 252.1 2.9 53.6 23 1 11 10383 09 09 31 09 25 13 --- 15 42 24 41.5 255.1 3.2 54.8 898 F 1 16664 09 09 31 09 25 57 3C279 15 43 08 33.8 232.7 2.8 41.4 22 1 12 16664 09 25 13 09 27 56 --- 15 45 08 33.5 233.2 2.8 41.7 120 R 1 17448 09 25 13 Schedule for VLBA_PT (Code Pt ) 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 45 51 40.8 255.7 3.2 55.0 22 1 12 17448 09 27 56 09 43 37 --- 16 00 51 37.8 258.4 3.5 55.9 898 R 1 11176 09 27 56 09 44 17 3C279 16 01 31 30.7 236.7 3.1 44.0 19 1 12 11176 09 43 37 09 46 16 --- 16 03 31 30.4 237.1 3.1 44.2 120 R 1 10115 09 43 37 09 46 55 3C274 16 04 09 37.1 259.0 3.5 56.1 18 1 12 10115 09 46 16 10 01 52 --- 16 19 09 34.1 261.5 3.8 56.8 898 R 1 3875 09 46 16 10 02 28 3C279 16 19 45 27.5 240.4 3.4 46.2 16 1 12 3875 10 01 52 10 04 28 --- 16 21 45 27.2 240.8 3.4 46.4 120 R 1 2838 10 01 52 10 05 04 3C274 16 22 22 33.4 262.0 3.9 56.9 17 1 13 2838 10 04 28 10 20 02 --- 16 37 22 30.3 264.3 4.1 57.3 898 F 1 3390 10 04 28 10 20 38 3C279 16 37 59 24.2 243.8 3.7 48.2 17 1 13 3390 10 20 02 10 22 38 --- 16 39 59 23.8 244.2 3.7 48.4 120 F 1 4430 10 20 02 10 23 15 3C274 16 40 35 29.7 264.8 4.2 57.4 17 1 13 4430 10 22 38 10 38 12 --- 16 55 35 26.6 267.0 4.4 57.6 898 F 1 10658 10 22 38 10 38 47 3C279 16 56 10 20.8 247.0 4.0 49.9 16 1 13 10658 10 38 12 10 40 47 --- 16 58 10 20.4 247.4 4.0 50.0 120 F 1 11689 10 38 12 10 41 22 3C274 16 58 45 25.9 267.5 4.5 57.7 15 1 14 11689 10 40 47 10 56 19 --- 17 13 45 22.8 269.6 4.7 57.7 898 R 1 17295 10 40 47 10 56 52 3C279 17 14 18 17.3 250.1 4.3 51.3 14 1 14 17295 10 56 19 10 58 52 --- 17 16 18 16.9 250.4 4.3 51.5 120 R 1 16279 10 56 19 11 01 31 1726+455 17 18 58 78.7 367.8 -0.1 -170.8 30 1 14 16279 11 01 01 11 04 30 --- 17 21 58 78.7 365.1 -0.1 -174.0 180 R 1 14882 11 01 14 11 07 48 1751+288 17 25 16 81.8 130.1 -0.5 -46.2 35 1 14 14882 11 07 18 11 10 47 --- 17 28 16 82.2 133.4 -0.4 -43.2 180 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: 6 Station: VLBA_PT 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: 6 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