COVER INFORMATION Station: SVETLOE (Code Sv ) 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 SVETLOE (Code Sv ) 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: 311.49 311.49 311.49 311.49 327.49 327.49 327.49 327.49 343.49 343.49 343.49 343.49 359.49 359.49 359.49 359.49 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 15 24 27 32.2 495.5 -2.5 -20.5 0 0 10 30 00 10 35 00 =1749+096 15 29 28 32.7 496.9 -2.4 -19.9 300 19 10 30 01 10 36 00 J1751+0939 15 30 28 32.8 497.2 -2.4 -19.8 54 19 10 36 00 10 41 00 =1749+096 15 35 29 33.2 498.6 -2.3 -19.3 300 39 10 36 01 10 42 00 J1751+0939 15 36 29 33.3 498.9 -2.3 -19.2 54 39 10 42 00 10 47 00 =1749+096 15 41 30 33.7 500.3 -2.2 -18.6 300 58 10 42 01 10 49 00 J1925+2106 15 43 30 34.9 469.9 -3.7 -29.7 64 58 10 49 00 10 51 00 =1923+210 15 45 31 35.1 470.4 -3.7 -29.6 120 66 10 49 01 10 51 00 J1925+2106 15 45 31 35.1 470.4 -3.7 -29.6 -5 66 No stop 10 53 00 =1923+210 15 47 31 35.4 470.9 -3.7 -29.5 115 74 10 51 01 10 54 00 J1931+2243 15 48 31 36.3 468.8 -3.7 -30.3 41 74 10 54 00 10 55 30 =1929+226 15 50 02 36.4 469.2 -3.7 -30.3 90 79 10 54 01 10 55 30 J1925+2106 15 50 02 35.6 471.5 -3.6 -29.4 -19 79 No stop 10 57 30 =1923+210 15 52 02 35.9 472.0 -3.6 -29.3 101 87 10 55 31 10 58 30 J1931+2243 15 53 02 36.8 469.9 -3.6 -30.1 41 87 10 58 30 11 00 00 =1929+226 15 54 32 36.9 470.3 -3.6 -30.0 90 93 10 58 31 11 00 00 J1925+2106 15 54 32 36.2 472.7 -3.5 -29.1 -19 93 No stop 11 02 00 =1923+210 15 56 33 36.4 473.2 -3.5 -29.0 101 101 11 00 01 11 03 00 J1931+2243 15 57 33 37.3 471.1 -3.6 -29.9 41 101 11 03 00 11 04 30 =1929+226 15 59 03 37.5 471.4 -3.5 -29.8 90 106 11 03 01 11 04 30 J1925+2106 15 59 03 36.7 473.8 -3.5 -28.9 -19 106 No stop 11 06 30 =1923+210 16 01 03 36.9 474.3 -3.4 -28.7 101 114 11 04 31 11 07 30 J1931+2243 16 02 04 37.8 472.2 -3.5 -29.6 41 114 11 07 30 11 09 00 =1929+226 16 03 34 38.0 472.6 -3.5 -29.5 90 120 11 07 31 11 09 00 J1925+2106 16 03 34 37.2 475.0 -3.4 -28.6 -19 120 No stop 11 11 00 =1923+210 16 05 34 37.4 475.5 -3.4 -28.4 101 128 11 09 01 Schedule for SVETLOE (Code Sv ) 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 16 06 34 38.3 473.4 -3.4 -29.3 41 128 11 12 00 11 13 30 =1929+226 16 08 05 38.5 473.7 -3.4 -29.2 90 134 11 12 01 11 13 30 J1925+2106 16 08 05 37.7 476.1 -3.3 -28.3 -19 134 No stop 11 15 30 =1923+210 16 10 05 37.9 476.7 -3.3 -28.1 101 141 11 13 31 11 16 30 J1931+2243 16 11 05 38.8 474.5 -3.3 -29.0 41 141 11 16 30 11 18 00 =1929+226 16 12 35 39.0 474.9 -3.3 -28.9 90 147 11 16 31 11 18 00 J1925+2106 16 12 35 38.2 477.3 -3.2 -27.9 -19 147 No stop 11 20 00 =1923+210 16 14 36 38.4 477.8 -3.2 -27.8 101 155 11 18 01 11 21 00 J1931+2243 16 15 36 39.3 475.7 -3.3 -28.7 41 155 11 21 00 11 22 30 =1929+226 16 17 06 39.5 476.1 -3.2 -28.6 90 161 11 21 01 11 22 30 J1925+2106 16 17 06 38.7 478.5 -3.2 -27.6 -19 161 No stop 11 24 30 =1923+210 16 19 06 38.9 479.0 -3.1 -27.5 101 168 11 22 31 11 25 30 J1931+2243 16 20 06 39.8 476.9 -3.2 -28.4 41 168 11 25 30 11 27 00 =1929+226 16 21 37 40.0 477.3 -3.2 -28.3 90 174 11 25 31 11 27 00 J1925+2106 16 21 37 39.1 479.7 -3.1 -27.3 -19 174 No stop 11 29 00 =1923+210 16 23 37 39.4 480.2 -3.0 -27.1 101 182 11 27 01 11 30 00 J1931+2243 16 24 37 40.3 478.1 -3.1 -28.1 41 182 11 30 00 11 31 30 =1929+226 16 26 07 40.5 478.5 -3.1 -28.0 90 188 11 30 01 11 31 30 J1925+2106 16 26 07 39.6 480.9 -3.0 -26.9 -19 188 No stop 11 33 30 =1923+210 16 28 08 39.8 481.4 -3.0 -26.7 101 195 11 31 31 11 34 30 J1931+2243 16 29 08 40.8 479.3 -3.0 -27.7 41 195 11 34 30 11 36 00 =1929+226 16 30 38 41.0 479.7 -3.0 -27.6 90 201 11 34 31 11 36 00 J1925+2106 16 30 38 40.1 482.1 -2.9 -26.5 -19 201 No stop 11 38 00 =1923+210 16 32 39 40.3 482.7 -2.9 -26.4 101 209 11 36 01 11 39 00 J1931+2243 16 33 39 41.3 480.5 -3.0 -27.4 41 209 11 39 00 11 40 30 =1929+226 16 35 09 41.5 480.9 -2.9 -27.2 90 215 11 39 01 11 40 30 J1925+2106 16 35 09 40.6 483.4 -2.9 -26.1 -19 215 No stop 11 42 30 =1923+210 16 37 09 40.8 483.9 -2.8 -26.0 101 223 11 40 31 11 43 30 J1931+2243 16 38 09 41.8 481.7 -2.9 -27.0 41 223 11 43 30 11 45 00 =1929+226 16 39 40 41.9 482.2 -2.9 -26.8 90 228 11 43 31 Schedule for SVETLOE (Code Sv ) 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 16 39 40 41.0 484.6 -2.8 -25.7 -19 228 No stop 11 47 00 =1923+210 16 41 40 41.2 485.2 -2.7 -25.5 101 236 11 45 01 11 48 00 J1931+2243 16 42 40 42.2 483.0 -2.8 -26.6 41 236 11 48 00 11 49 30 =1929+226 16 44 10 42.4 483.4 -2.8 -26.4 90 242 11 48 01 11 49 30 J1925+2106 16 44 10 41.5 485.9 -2.7 -25.3 -19 242 No stop 11 51 30 =1923+210 16 46 11 41.7 486.4 -2.7 -25.1 101 250 11 49 31 11 52 30 J1931+2243 16 47 11 42.7 484.3 -2.7 -26.2 41 250 11 52 30 11 54 00 =1929+226 16 48 41 42.8 484.7 -2.7 -26.0 90 255 11 52 31 11 54 00 J1925+2106 16 48 41 41.9 487.2 -2.6 -24.9 -19 255 No stop 11 56 00 =1923+210 16 50 41 42.1 487.7 -2.6 -24.7 101 263 11 54 01 11 57 00 J1931+2243 16 51 42 43.2 485.5 -2.7 -25.7 41 263 11 57 00 11 58 30 =1929+226 16 53 12 43.3 486.0 -2.6 -25.6 90 269 11 57 01 11 58 30 J1925+2106 16 53 12 42.4 488.4 -2.6 -24.4 -19 269 No stop 12 00 30 =1923+210 16 55 12 42.6 489.0 -2.5 -24.2 101 277 11 58 31 12 01 30 J1931+2243 16 56 12 43.6 486.8 -2.6 -25.3 41 277 12 01 30 12 03 00 =1929+226 16 57 43 43.7 487.3 -2.6 -25.1 90 283 12 01 31 12 03 00 J1925+2106 16 57 43 42.8 489.8 -2.5 -23.9 -19 283 No stop 12 05 00 =1923+210 16 59 43 43.0 490.3 -2.4 -23.7 101 290 12 03 01 12 06 00 J1931+2243 17 00 43 44.0 488.1 -2.5 -24.8 41 290 12 06 00 12 07 30 =1929+226 17 02 13 44.2 488.6 -2.5 -24.7 90 296 12 06 01 12 07 30 J1925+2106 17 02 13 43.2 491.1 -2.4 -23.4 -19 296 No stop 12 09 30 =1923+210 17 04 14 43.4 491.7 -2.4 -23.2 101 304 12 07 31 12 10 30 J1931+2243 17 05 14 44.5 489.5 -2.4 -24.3 41 304 12 10 30 12 12 00 =1929+226 17 06 44 44.6 489.9 -2.4 -24.2 90 310 12 10 31 12 12 00 J1925+2106 17 06 44 43.6 492.4 -2.3 -22.9 -19 310 No stop 12 14 00 =1923+210 17 08 44 43.8 493.0 -2.3 -22.7 101 317 12 12 01 12 15 00 J1931+2243 17 09 45 44.9 490.8 -2.4 -23.8 41 317 12 15 00 12 16 30 =1929+226 17 11 15 45.0 491.2 -2.3 -23.7 90 323 12 15 01 12 16 30 J1925+2106 17 11 15 44.0 493.7 -2.3 -22.4 -19 323 No stop 12 18 30 =1923+210 17 13 15 44.2 494.3 -2.2 -22.2 101 331 12 16 31 Schedule for SVETLOE (Code Sv ) 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 17 14 15 45.3 492.1 -2.3 -23.3 41 331 12 19 30 12 21 00 =1929+226 17 15 46 45.4 492.6 -2.3 -23.1 90 337 12 19 31 12 21 00 J1925+2106 17 15 46 44.4 495.1 -2.2 -21.9 -19 337 No stop 12 23 00 =1923+210 17 17 46 44.6 495.7 -2.1 -21.6 101 344 12 21 01 12 24 00 J1931+2243 17 18 46 45.7 493.5 -2.2 -22.8 41 344 12 24 00 12 25 30 =1929+226 17 20 16 45.9 494.0 -2.2 -22.6 90 350 12 24 01 12 25 30 J1925+2106 17 20 16 44.8 496.5 -2.1 -21.3 -19 350 No stop 12 27 30 =1923+210 17 22 17 45.0 497.1 -2.1 -21.0 101 358 12 25 31 12 28 30 J1931+2243 17 23 17 46.1 494.9 -2.1 -22.2 41 358 12 28 30 12 30 00 =1929+226 17 24 47 46.2 495.3 -2.1 -22.0 90 364 12 28 31 12 30 00 J1925+2106 17 24 47 45.2 497.9 -2.0 -20.7 -19 364 No stop 12 32 00 =1923+210 17 26 47 45.4 498.5 -2.0 -20.5 101 372 12 30 01 12 33 00 J1931+2243 17 27 48 46.5 496.3 -2.1 -21.6 41 372 12 33 00 12 34 30 =1929+226 17 29 18 46.6 496.8 -2.0 -21.4 90 377 12 33 01 12 34 30 J1925+2106 17 29 18 45.6 499.3 -2.0 -20.1 -19 377 No stop 12 36 30 =1923+210 17 31 18 45.7 499.9 -1.9 -19.9 101 385 12 34 31 12 37 30 J1931+2243 17 32 18 46.9 497.7 -2.0 -21.0 41 385 12 37 30 12 39 00 =1929+226 17 33 49 47.0 498.2 -2.0 -20.8 90 391 12 37 31 12 39 00 J1925+2106 17 33 49 45.9 500.7 -1.9 -19.5 -19 391 No stop 12 41 00 =1923+210 17 35 49 46.1 501.3 -1.8 -19.2 101 399 12 39 01 12 42 00 J1931+2243 17 36 49 47.3 499.1 -1.9 -20.4 41 399 12 42 00 12 43 30 =1929+226 17 38 19 47.4 499.6 -1.9 -20.2 90 404 12 42 01 12 43 30 J1925+2106 17 38 19 46.3 502.1 -1.8 -18.9 -19 404 No stop 12 45 30 =1923+210 17 40 20 46.4 502.8 -1.8 -18.6 101 412 12 43 31 12 46 30 J1931+2243 17 41 20 47.6 500.6 -1.8 -19.8 41 412 12 46 30 12 48 00 =1929+226 17 42 50 47.7 501.1 -1.8 -19.6 90 418 12 46 31 12 48 00 J1925+2106 17 42 50 46.6 503.6 -1.7 -18.3 -19 418 No stop 12 50 00 =1923+210 17 44 50 46.7 504.2 -1.7 -18.0 101 426 12 48 01 12 51 00 J1931+2243 17 45 51 48.0 502.0 -1.8 -19.2 41 426 12 51 00 12 52 30 =1929+226 17 47 21 48.1 502.5 -1.7 -18.9 90 432 12 51 01 Schedule for SVETLOE (Code Sv ) 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 17 47 21 46.9 505.0 -1.7 -17.6 -19 432 No stop 12 54 30 =1923+210 17 49 21 47.1 505.7 -1.6 -17.3 101 439 12 52 31 12 55 30 J1931+2243 17 50 21 48.3 503.5 -1.7 -18.5 41 439 12 55 30 12 57 00 =1929+226 17 51 52 48.4 504.0 -1.7 -18.3 90 445 12 55 31 12 57 00 J1925+2106 17 51 52 47.2 506.5 -1.6 -16.9 -19 445 No stop 12 59 00 =1923+210 17 53 52 47.4 507.2 -1.5 -16.6 101 453 12 57 01 13 00 00 J1931+2243 17 54 52 48.6 505.0 -1.6 -17.8 41 453 13 00 00 13 01 30 =1929+226 17 56 22 48.7 505.5 -1.6 -17.6 90 459 13 00 01 13 01 30 J1925+2106 17 56 22 47.5 508.0 -1.5 -16.2 -19 459 No stop 13 03 30 =1923+210 17 58 23 47.7 508.7 -1.5 -15.9 101 466 13 01 31 13 04 30 J1931+2243 17 59 23 48.9 506.5 -1.5 -17.1 41 466 13 04 30 13 06 00 =1929+226 18 00 53 49.0 507.0 -1.5 -16.9 90 472 13 04 31 13 07 00 J1925+2106 18 01 53 47.9 509.8 -1.4 -15.4 41 472 13 07 00 13 09 00 =1923+210 18 03 53 48.0 510.5 -1.4 -15.0 120 480 13 07 01 13 11 00 J1850+2825 18 05 54 57.0 521.6 -0.8 -10.2 86 480 13 11 00 13 17 00 =1848+283 18 11 55 57.2 524.0 -0.7 -8.9 360 503 13 11 01 13 18 00 J1850+2825 18 12 55 57.3 524.4 -0.6 -8.7 53 503 13 18 00 13 23 00 =1848+283 18 17 56 57.4 526.4 -0.6 -7.6 300 523 13 18 01 13 24 00 J1850+2825 18 18 56 57.5 526.8 -0.5 -7.3 53 523 13 24 00 13 30 00 =1848+283 18 24 57 57.6 529.3 -0.4 -6.0 360 546 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 Matching groups in /aps3/sched10.2/catalogs/freq.dat: kvzr_x Added by Des Small, 24 February 2012 Setup group: 4 Station: SVETLOE 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= 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 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 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 7 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= 311.49 311.49 311.49 311.49 327.49 327.49 327.49 327.49 343.49 343.49 343.49 343.49 359.49 359.49 359.49 359.49 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: 7 8 9 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