COVER INFORMATION Station: EFLSBERG (Code Ef ) Experiment: X band NME+FTP-FT Experiment Exp. Code: N13X4 Schedule Version: 1.00 Processed by SCHED version: 10.20 Release of about July 12, 2012 PI: Gabriele SURCIS Address: JIVE Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31-521-596508 EMAIL: surcis@jive.nl Fax: Phone during observation: +31-521-596508 Observing mode: 512-8-2 Notes: 8 x 16 MHz, 2 bit sampling Check antenna pointing, Please Two FTP-FT scan scheduled. COVER LETTER: This is the schedule for the 3.6 NME and ftp fringe-test on 04 November 2013 involving 12 antennas: Eb Wb On20 Mc Nt Ys Sv Zc Bd Ur Sh Hh (+Md). The schedule consists of long integrations on strong calibrators like J1751+0939 and J1850+2825 as well as phase-referencing parts with a continuum source as target. Two ftp-fringe tests are scheduled throughout the experiment: ~10:40 (scan 2, 2 sec, J1751+0939) ~13:22 (scan 67, 2 sec, J1850+2825) Please make sure that the autoftp is set up correctly. Thanks! Good luck with the session! Gabriele Schedule for EFLSBERG (Code Ef ) Page 2 X band NME+FTP-FT Experiment UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Mon 4 Nov 2013 Day 308 --- Next scan frequencies: 8391.49 8391.49 8391.49 8391.49 8407.49 8407.49 8407.49 8407.49 8423.49 8423.49 8423.49 8423.49 8439.49 8439.49 8439.49 8439.49 Next BBC frequencies: 691.49 691.49 691.49 691.49 707.49 707.49 707.49 707.49 723.49 723.49 723.49 723.49 739.49 739.49 739.49 739.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 10 30 00 J1751+0939 13 52 52 26.4 107.9 -4.0 -37.8 0 0 10 30 00 10 35 00 =1749+096 13 57 53 27.1 109.0 -3.9 -37.6 300 19 10 30 01 10 36 00 J1751+0939 13 58 53 27.3 109.2 -3.9 -37.5 49 19 10 36 00 10 41 00 =1749+096 14 03 54 28.0 110.4 -3.8 -37.2 300 39 10 36 01 10 42 00 J1751+0939 14 04 54 28.2 110.6 -3.8 -37.1 49 39 10 42 00 10 47 00 =1749+096 14 09 55 28.9 111.7 -3.7 -36.8 300 58 10 42 01 10 49 00 J1925+2106 14 11 55 23.3 84.5 -5.2 -42.7 25 58 10 49 00 10 51 00 =1923+210 14 13 55 23.6 84.9 -5.2 -42.8 120 66 10 49 01 10 51 00 J1925+2106 14 13 55 23.6 84.9 -5.2 -42.8 -9 66 No stop 10 53 00 =1923+210 14 15 56 23.9 85.3 -5.2 -42.8 111 74 10 51 01 10 54 00 J1931+2243 14 16 56 24.4 83.2 -5.3 -43.2 30 74 10 54 00 10 55 30 =1929+226 14 18 26 24.6 83.5 -5.2 -43.2 90 79 10 54 01 10 55 30 J1925+2106 14 18 26 24.3 85.7 -5.1 -42.8 -30 79 No stop 10 57 30 =1923+210 14 20 26 24.6 86.1 -5.1 -42.8 90 87 10 55 31 10 58 30 J1931+2243 14 21 26 25.1 84.1 -5.2 -43.3 30 87 10 58 30 11 00 00 =1929+226 14 22 57 25.3 84.3 -5.2 -43.3 90 93 10 58 31 11 00 00 J1925+2106 14 22 57 25.0 86.6 -5.1 -42.9 -30 93 No stop 11 02 00 =1923+210 14 24 57 25.3 87.0 -5.0 -42.9 90 101 11 00 01 11 03 00 J1931+2243 14 25 57 25.8 84.9 -5.1 -43.4 30 101 11 03 00 11 04 30 =1929+226 14 27 27 26.0 85.2 -5.1 -43.4 90 106 11 03 01 11 04 30 J1925+2106 14 27 27 25.7 87.4 -5.0 -42.9 -31 106 No stop 11 06 30 =1923+210 14 29 28 26.0 87.8 -5.0 -42.9 89 114 11 04 31 11 07 30 J1931+2243 14 30 28 26.5 85.7 -5.0 -43.4 30 114 11 07 30 11 09 00 =1929+226 14 31 58 26.8 86.0 -5.0 -43.5 90 120 11 07 31 11 09 00 J1925+2106 14 31 58 26.4 88.3 -4.9 -42.9 -31 120 No stop 11 11 00 =1923+210 14 33 59 26.8 88.7 -4.9 -43.0 89 128 11 09 01 Schedule for EFLSBERG (Code Ef ) Page 3 X band NME+FTP-FT Experiment UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Mon 4 Nov 2013 Day 308 --- 11 12 00 J1931+2243 14 34 59 27.2 86.6 -5.0 -43.5 30 128 11 12 00 11 13 30 =1929+226 14 36 29 27.5 86.9 -4.9 -43.5 90 134 11 12 01 11 13 30 J1925+2106 14 36 29 27.2 89.2 -4.8 -43.0 -31 134 No stop 11 15 30 =1923+210 14 38 29 27.5 89.5 -4.8 -43.0 89 141 11 13 31 11 16 30 J1931+2243 14 39 29 28.0 87.4 -4.9 -43.5 30 141 11 16 30 11 18 00 =1929+226 14 41 00 28.2 87.7 -4.9 -43.5 90 147 11 16 31 11 18 00 J1925+2106 14 41 00 27.9 90.0 -4.8 -43.0 -31 147 No stop 11 20 00 =1923+210 14 43 00 28.2 90.4 -4.7 -43.0 89 155 11 18 01 11 21 00 J1931+2243 14 44 00 28.7 88.3 -4.8 -43.6 30 155 11 21 00 11 22 30 =1929+226 14 45 30 28.9 88.6 -4.8 -43.6 90 161 11 21 01 11 22 30 J1925+2106 14 45 30 28.6 90.9 -4.7 -43.0 -31 161 No stop 11 24 30 =1923+210 14 47 31 28.9 91.3 -4.7 -43.0 89 168 11 22 31 11 25 30 J1931+2243 14 48 31 29.4 89.2 -4.7 -43.6 30 168 11 25 30 11 27 00 =1929+226 14 50 01 29.6 89.5 -4.7 -43.6 90 174 11 25 31 11 27 00 J1925+2106 14 50 01 29.3 91.8 -4.6 -42.9 -31 174 No stop 11 29 00 =1923+210 14 52 01 29.6 92.2 -4.6 -42.9 89 182 11 27 01 11 30 00 J1931+2243 14 53 02 30.1 90.0 -4.6 -43.6 30 182 11 30 00 11 31 30 =1929+226 14 54 32 30.3 90.3 -4.6 -43.6 90 188 11 30 01 11 31 30 J1925+2106 14 54 32 30.0 92.7 -4.5 -42.9 -31 188 No stop 11 33 30 =1923+210 14 56 32 30.3 93.1 -4.5 -42.9 89 195 11 31 31 11 34 30 J1931+2243 14 57 32 30.8 90.9 -4.6 -43.6 30 195 11 34 30 11 36 00 =1929+226 14 59 03 31.1 91.2 -4.5 -43.6 90 201 11 34 31 11 36 00 J1925+2106 14 59 03 30.7 93.6 -4.5 -42.9 -31 201 No stop 11 38 00 =1923+210 15 01 03 31.1 94.0 -4.4 -42.8 89 209 11 36 01 11 39 00 J1931+2243 15 02 03 31.5 91.8 -4.5 -43.6 30 209 11 39 00 11 40 30 =1929+226 15 03 33 31.8 92.1 -4.5 -43.5 90 215 11 39 01 11 40 30 J1925+2106 15 03 33 31.5 94.5 -4.4 -42.8 -31 215 No stop 11 42 30 =1923+210 15 05 34 31.8 94.9 -4.4 -42.8 89 223 11 40 31 11 43 30 J1931+2243 15 06 34 32.3 92.7 -4.4 -43.5 29 223 11 43 30 11 45 00 =1929+226 15 08 04 32.5 93.0 -4.4 -43.5 90 228 11 43 31 Schedule for EFLSBERG (Code Ef ) Page 4 X band NME+FTP-FT Experiment UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Mon 4 Nov 2013 Day 308 --- 11 45 00 J1925+2106 15 08 04 32.2 95.4 -4.3 -42.7 -31 228 No stop 11 47 00 =1923+210 15 10 04 32.5 95.8 -4.3 -42.7 89 236 11 45 01 11 48 00 J1931+2243 15 11 05 33.0 93.6 -4.3 -43.5 29 236 11 48 00 11 49 30 =1929+226 15 12 35 33.2 93.9 -4.3 -43.5 90 242 11 48 01 11 49 30 J1925+2106 15 12 35 32.9 96.3 -4.2 -42.7 -31 242 No stop 11 51 30 =1923+210 15 14 35 33.2 96.7 -4.2 -42.6 89 250 11 49 31 11 52 30 J1931+2243 15 15 35 33.7 94.5 -4.3 -43.4 29 250 11 52 30 11 54 00 =1929+226 15 17 06 33.9 94.8 -4.2 -43.4 90 255 11 52 31 11 54 00 J1925+2106 15 17 06 33.6 97.2 -4.2 -42.5 -31 255 No stop 11 56 00 =1923+210 15 19 06 33.9 97.6 -4.1 -42.5 89 263 11 54 01 11 57 00 J1931+2243 15 20 06 34.4 95.4 -4.2 -43.3 29 263 11 57 00 11 58 30 =1929+226 15 21 36 34.6 95.7 -4.2 -43.3 90 269 11 57 01 11 58 30 J1925+2106 15 21 36 34.3 98.1 -4.1 -42.4 -31 269 No stop 12 00 30 =1923+210 15 23 37 34.6 98.6 -4.0 -42.4 89 277 11 58 31 12 01 30 J1931+2243 15 24 37 35.1 96.3 -4.1 -43.3 29 277 12 01 30 12 03 00 =1929+226 15 26 07 35.4 96.6 -4.1 -43.2 90 283 12 01 31 12 03 00 J1925+2106 15 26 07 35.0 99.1 -4.0 -42.3 -32 283 No stop 12 05 00 =1923+210 15 28 07 35.3 99.5 -4.0 -42.2 88 290 12 03 01 12 06 00 J1931+2243 15 29 08 35.8 97.2 -4.0 -43.2 29 290 12 06 00 12 07 30 =1929+226 15 30 38 36.1 97.6 -4.0 -43.1 90 296 12 06 01 12 07 30 J1925+2106 15 30 38 35.7 100.0 -3.9 -42.2 -32 296 No stop 12 09 30 =1923+210 15 32 38 36.0 100.5 -3.9 -42.1 88 304 12 07 31 12 10 30 J1931+2243 15 33 38 36.5 98.2 -4.0 -43.0 29 304 12 10 30 12 12 00 =1929+226 15 35 09 36.8 98.5 -3.9 -43.0 90 310 12 10 31 12 12 00 J1925+2106 15 35 09 36.4 101.0 -3.9 -42.0 -32 310 No stop 12 14 00 =1923+210 15 37 09 36.7 101.4 -3.8 -41.9 88 317 12 12 01 12 15 00 J1931+2243 15 38 09 37.2 99.1 -3.9 -42.9 29 317 12 15 00 12 16 30 =1929+226 15 39 39 37.5 99.5 -3.9 -42.8 90 323 12 15 01 12 16 30 J1925+2106 15 39 39 37.1 102.0 -3.8 -41.8 -32 323 No stop 12 18 30 =1923+210 15 41 40 37.4 102.4 -3.7 -41.7 88 331 12 16 31 Schedule for EFLSBERG (Code Ef ) Page 5 X band NME+FTP-FT Experiment UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Mon 4 Nov 2013 Day 308 --- 12 19 30 J1931+2243 15 42 40 38.0 100.1 -3.8 -42.7 29 331 12 19 30 12 21 00 =1929+226 15 44 10 38.2 100.4 -3.8 -42.7 90 337 12 19 31 12 21 00 J1925+2106 15 44 10 37.8 103.0 -3.7 -41.6 -32 337 No stop 12 23 00 =1923+210 15 46 10 38.1 103.4 -3.7 -41.5 88 344 12 21 01 12 24 00 J1931+2243 15 47 11 38.7 101.1 -3.7 -42.6 29 344 12 24 00 12 25 30 =1929+226 15 48 41 38.9 101.4 -3.7 -42.5 90 350 12 24 01 12 25 30 J1925+2106 15 48 41 38.5 104.0 -3.6 -41.4 -32 350 No stop 12 27 30 =1923+210 15 50 41 38.8 104.4 -3.6 -41.3 88 358 12 25 31 12 28 30 J1931+2243 15 51 41 39.4 102.1 -3.7 -42.4 29 358 12 28 30 12 30 00 =1929+226 15 53 11 39.6 102.4 -3.6 -42.3 90 364 12 28 31 12 30 00 J1925+2106 15 53 11 39.2 105.0 -3.6 -41.2 -32 364 No stop 12 32 00 =1923+210 15 55 12 39.5 105.5 -3.5 -41.1 88 372 12 30 01 12 33 00 J1931+2243 15 56 12 40.1 103.1 -3.6 -42.2 28 372 12 33 00 12 34 30 =1929+226 15 57 42 40.3 103.4 -3.6 -42.1 90 377 12 33 01 12 34 30 J1925+2106 15 57 42 39.9 106.0 -3.5 -40.9 -32 377 No stop 12 36 30 =1923+210 15 59 43 40.2 106.5 -3.4 -40.8 88 385 12 34 31 12 37 30 J1931+2243 16 00 43 40.8 104.1 -3.5 -42.0 28 385 12 37 30 12 39 00 =1929+226 16 02 13 41.0 104.4 -3.5 -41.9 90 391 12 37 31 12 39 00 J1925+2106 16 02 13 40.6 107.1 -3.4 -40.7 -32 391 No stop 12 41 00 =1923+210 16 04 13 40.9 107.5 -3.4 -40.5 88 399 12 39 01 12 42 00 J1931+2243 16 05 13 41.5 105.1 -3.4 -41.7 28 399 12 42 00 12 43 30 =1929+226 16 06 44 41.7 105.4 -3.4 -41.6 90 404 12 42 01 12 43 30 J1925+2106 16 06 44 41.3 108.1 -3.3 -40.4 -33 404 No stop 12 45 30 =1923+210 16 08 44 41.6 108.6 -3.3 -40.2 87 412 12 43 31 12 46 30 J1931+2243 16 09 44 42.1 106.1 -3.4 -41.5 28 412 12 46 30 12 48 00 =1929+226 16 11 14 42.4 106.5 -3.3 -41.4 90 418 12 46 31 12 48 00 J1925+2106 16 11 14 42.0 109.2 -3.3 -40.1 -33 418 No stop 12 50 00 =1923+210 16 13 15 42.3 109.7 -3.2 -39.9 87 426 12 48 01 12 51 00 J1931+2243 16 14 15 42.8 107.2 -3.3 -41.2 28 426 12 51 00 12 52 30 =1929+226 16 15 45 43.1 107.6 -3.3 -41.1 90 432 12 51 01 Schedule for EFLSBERG (Code Ef ) Page 6 X band NME+FTP-FT Experiment UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Mon 4 Nov 2013 Day 308 --- 12 52 30 J1925+2106 16 15 45 42.6 110.3 -3.2 -39.7 -33 432 No stop 12 54 30 =1923+210 16 17 46 42.9 110.8 -3.1 -39.6 87 439 12 52 31 12 55 30 J1931+2243 16 18 46 43.5 108.3 -3.2 -40.9 28 439 12 55 30 12 57 00 =1929+226 16 20 16 43.7 108.6 -3.2 -40.8 90 445 12 55 31 12 57 00 J1925+2106 16 20 16 43.3 111.4 -3.1 -39.4 -33 445 No stop 12 59 00 =1923+210 16 22 16 43.6 111.9 -3.1 -39.2 87 453 12 57 01 13 00 00 J1931+2243 16 23 16 44.2 109.4 -3.1 -40.6 28 453 13 00 00 13 01 30 =1929+226 16 24 47 44.4 109.7 -3.1 -40.5 90 459 13 00 01 13 01 30 J1925+2106 16 24 47 44.0 112.5 -3.0 -39.0 -33 459 No stop 13 03 30 =1923+210 16 26 47 44.3 113.0 -3.0 -38.8 87 466 13 01 31 13 04 30 J1931+2243 16 27 47 44.9 110.5 -3.1 -40.2 28 466 13 04 30 13 06 00 =1929+226 16 29 17 45.1 110.9 -3.0 -40.1 90 472 13 04 31 13 07 00 J1925+2106 16 30 18 44.8 113.9 -2.9 -38.5 27 472 13 07 00 13 09 00 =1923+210 16 32 18 45.1 114.4 -2.9 -38.4 120 480 13 07 01 13 11 00 J1850+2825 16 34 18 56.1 117.6 -2.3 -39.8 55 480 13 11 00 13 17 00 =1848+283 16 40 19 57.0 119.5 -2.2 -39.0 360 503 13 11 01 13 18 00 J1850+2825 16 41 19 57.1 119.8 -2.2 -38.9 48 503 13 18 00 13 23 00 =1848+283 16 46 20 57.8 121.4 -2.1 -38.1 300 523 13 18 01 13 24 00 J1850+2825 16 47 20 57.9 121.7 -2.1 -37.9 48 523 13 24 00 13 30 00 =1848+283 16 53 21 58.7 123.7 -2.0 -37.0 360 546 13 24 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess313.X512 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 9 Station: EFLSBERG Total bit rate: 512 Format: MARK5B Bits per sample: 2 Sample rate: 16.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 7700.00 Net SB= L L U U L L U U L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 BBC SB= L L U U L L U U L L U U L L U U IF = A1 B3 A1 B3 A1 B3 A1 B3 A1 B3 A1 B3 A1 B3 A1 B3 The following frequency sets based on these setups were used. Frequency Set: 1 Setup file default. LO sum= 8391.49 8391.49 8391.49 8391.49 8407.49 8407.49 8407.49 8407.49 8423.49 8423.49 8423.49 8423.49 8439.49 8439.49 8439.49 8439.49 BBC fr= 691.49 691.49 691.49 691.49 707.49 707.49 707.49 707.49 723.49 723.49 723.49 723.49 739.49 739.49 739.49 739.49 Bandwd= 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 Matching frequency sets: 1 Track assignments are: track1= 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 barrel=roll_off SOURCES USED IN RECORDING SCANS -- X band NME+FTP-FT Experiment 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) * J1751+0939 17 49 10.387929 * 17 51 32.818572 17 52 11.762260 0.10 1749+096 09 39 42.82574 * 09 39 00.72829 09 39 06.27166 0.10 J1751+09 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 133560 observations 0.250 scan and 19.500 baseline hours in setup: sess313.X512 Frequency sets (dups not shown): 1 2 3 4 5 6 7 10 11 12 13 * J1850+2825 18 48 29.069767 * 18 50 27.589825 18 51 00.058301 0.16 1848+283 28 21 38.48500 * 28 25 13.15523 28 26 35.21469 0.19 J1850+28 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 71 observations 0.283 scan and 22.100 baseline hours in setup: sess313.X512 Frequency sets (dups not shown): 1 2 3 4 5 6 7 10 11 12 13 * J1925+2106 19 23 49.792391 * 19 25 59.605354 19 26 35.488565 0.11 1923+210 21 00 23.30482 * 21 06 26.16190 21 08 28.42838 0.10 J1925+21 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 32646 observations 1.067 scan and 70.050 baseline hours in setup: sess313.X512 Frequency sets (dups not shown): 1 2 3 4 5 6 7 10 11 12 13 * J1931+2243 19 29 16.894885 * 19 31 24.916779 19 32 00.333106 0.11 1929+226 22 37 06.35047 * 22 43 31.25849 22 45 40.08861 0.10 J1931+22 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 3020 observations 0.750 scan and 58.500 baseline hours in setup: sess313.X512 Frequency sets (dups not shown): 1 2 3 4 5 6 7 10 11 12 13 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) J1751+0939 54.0 J1850+2825 75.1 J1925+2106 79.4 J1931+2243 81.2 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