COVER INFORMATION Station: YEBES40M (Code Ys ) 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 YEBES40M (Code Ys ) 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: 741.49 741.49 741.49 741.49 757.49 757.49 757.49 757.49 773.49 773.49 773.49 773.49 789.49 789.49 789.49 789.49 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 12 59 21.6 95.8 -4.7 -50.1 0 0 10 30 00 10 35 00 =1749+096 13 18 00 22.5 96.6 -4.6 -50.0 300 19 10 30 01 10 36 00 J1751+0939 13 19 00 22.7 96.8 -4.6 -50.0 45 19 10 36 00 10 41 00 =1749+096 13 24 01 23.7 97.7 -4.5 -49.8 300 39 10 36 01 10 42 00 J1751+0939 13 25 01 23.8 97.9 -4.5 -49.8 45 39 10 42 00 10 47 00 =1749+096 13 30 02 24.8 98.7 -4.4 -49.7 300 58 10 42 01 10 49 00 J1925+2106 13 32 02 14.5 74.4 -5.9 -51.7 80 58 10 49 00 10 51 00 =1923+210 13 34 02 14.9 74.7 -5.9 -51.8 120 66 10 49 01 10 51 00 J1925+2106 13 34 02 14.9 74.7 -5.9 -51.8 -15 66 No stop 10 53 00 =1923+210 13 36 03 15.3 75.0 -5.8 -51.9 105 74 10 51 01 10 54 00 J1931+2243 13 37 03 15.5 73.1 -5.9 -52.0 43 74 10 54 00 10 55 30 =1929+226 13 38 33 15.7 73.3 -5.9 -52.1 90 79 10 54 01 10 55 30 J1925+2106 13 38 33 15.7 75.4 -5.8 -52.1 -17 79 No stop 10 57 30 =1923+210 13 40 33 16.1 75.7 -5.8 -52.2 103 87 10 55 31 10 58 30 J1931+2243 13 41 34 16.3 73.7 -5.8 -52.3 43 87 10 58 30 11 00 00 =1929+226 13 43 04 16.6 73.9 -5.8 -52.4 90 93 10 58 31 11 00 00 J1925+2106 13 43 04 16.6 76.1 -5.7 -52.3 -17 93 No stop 11 02 00 =1923+210 13 45 04 16.9 76.4 -5.7 -52.4 103 101 11 00 01 11 03 00 J1931+2243 13 46 04 17.1 74.4 -5.8 -52.5 43 101 11 03 00 11 04 30 =1929+226 13 47 35 17.4 74.6 -5.7 -52.6 90 106 11 03 01 11 04 30 J1925+2106 13 47 35 17.4 76.7 -5.7 -52.5 -17 106 No stop 11 06 30 =1923+210 13 49 35 17.8 77.0 -5.6 -52.6 103 114 11 04 31 11 07 30 J1931+2243 13 50 35 17.9 75.0 -5.7 -52.8 43 114 11 07 30 11 09 00 =1929+226 13 52 05 18.2 75.3 -5.7 -52.9 90 120 11 07 31 11 09 00 J1925+2106 13 52 05 18.2 77.4 -5.6 -52.7 -17 120 No stop 11 11 00 =1923+210 13 54 06 18.6 77.7 -5.5 -52.8 103 128 11 09 01 Schedule for YEBES40M (Code Ys ) 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 13 55 06 18.8 75.7 -5.6 -53.0 43 128 11 12 00 11 13 30 =1929+226 13 56 36 19.1 75.9 -5.6 -53.1 90 134 11 12 01 11 13 30 J1925+2106 13 56 36 19.1 78.1 -5.5 -52.9 -17 134 No stop 11 15 30 =1923+210 13 58 36 19.5 78.4 -5.5 -53.0 103 141 11 13 31 11 16 30 J1931+2243 13 59 36 19.6 76.4 -5.5 -53.2 43 141 11 16 30 11 18 00 =1929+226 14 01 07 19.9 76.6 -5.5 -53.3 90 147 11 16 31 11 18 00 J1925+2106 14 01 07 19.9 78.8 -5.4 -53.1 -17 147 No stop 11 20 00 =1923+210 14 03 07 20.3 79.1 -5.4 -53.1 103 155 11 18 01 11 21 00 J1931+2243 14 04 07 20.4 77.0 -5.5 -53.4 43 155 11 21 00 11 22 30 =1929+226 14 05 37 20.7 77.2 -5.4 -53.5 90 161 11 21 01 11 22 30 J1925+2106 14 05 37 20.8 79.4 -5.3 -53.2 -17 161 No stop 11 24 30 =1923+210 14 07 38 21.1 79.7 -5.3 -53.3 103 168 11 22 31 11 25 30 J1931+2243 14 08 38 21.3 77.7 -5.4 -53.6 43 168 11 25 30 11 27 00 =1929+226 14 10 08 21.6 77.9 -5.4 -53.7 90 174 11 25 31 11 27 00 J1925+2106 14 10 08 21.6 80.1 -5.3 -53.4 -17 174 No stop 11 29 00 =1923+210 14 12 09 22.0 80.4 -5.2 -53.5 103 182 11 27 01 11 30 00 J1931+2243 14 13 09 22.1 78.3 -5.3 -53.8 43 182 11 30 00 11 31 30 =1929+226 14 14 39 22.4 78.6 -5.3 -53.9 90 188 11 30 01 11 31 30 J1925+2106 14 14 39 22.5 80.8 -5.2 -53.6 -17 188 No stop 11 33 30 =1923+210 14 16 39 22.8 81.1 -5.2 -53.6 103 195 11 31 31 11 34 30 J1931+2243 14 17 39 23.0 79.0 -5.2 -54.0 43 195 11 34 30 11 36 00 =1929+226 14 19 10 23.2 79.2 -5.2 -54.1 90 201 11 34 31 11 36 00 J1925+2106 14 19 10 23.3 81.5 -5.1 -53.7 -17 201 No stop 11 38 00 =1923+210 14 21 10 23.7 81.8 -5.1 -53.8 103 209 11 36 01 11 39 00 J1931+2243 14 22 10 23.8 79.7 -5.2 -54.2 43 209 11 39 00 11 40 30 =1929+226 14 23 40 24.1 79.9 -5.1 -54.2 90 215 11 39 01 11 40 30 J1925+2106 14 23 40 24.1 82.1 -5.0 -53.8 -17 215 No stop 11 42 30 =1923+210 14 25 41 24.5 82.4 -5.0 -53.9 103 223 11 40 31 11 43 30 J1931+2243 14 26 41 24.6 80.3 -5.1 -54.4 43 223 11 43 30 11 45 00 =1929+226 14 28 11 24.9 80.6 -5.1 -54.4 90 228 11 43 31 Schedule for YEBES40M (Code Ys ) 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 14 28 11 25.0 82.8 -5.0 -54.0 -17 228 No stop 11 47 00 =1923+210 14 30 12 25.4 83.1 -4.9 -54.0 103 236 11 45 01 11 48 00 J1931+2243 14 31 12 25.5 81.0 -5.0 -54.5 43 236 11 48 00 11 49 30 =1929+226 14 32 42 25.8 81.2 -5.0 -54.6 90 242 11 48 01 11 49 30 J1925+2106 14 32 42 25.9 83.5 -4.9 -54.1 -17 242 No stop 11 51 30 =1923+210 14 34 42 26.2 83.8 -4.9 -54.1 103 250 11 49 31 11 52 30 J1931+2243 14 35 42 26.3 81.7 -4.9 -54.7 43 250 11 52 30 11 54 00 =1929+226 14 37 13 26.6 81.9 -4.9 -54.7 90 255 11 52 31 11 54 00 J1925+2106 14 37 13 26.7 84.2 -4.8 -54.2 -17 255 No stop 11 56 00 =1923+210 14 39 13 27.1 84.5 -4.8 -54.2 103 263 11 54 01 11 57 00 J1931+2243 14 40 13 27.2 82.4 -4.9 -54.8 43 263 11 57 00 11 58 30 =1929+226 14 41 43 27.5 82.6 -4.8 -54.8 90 269 11 57 01 11 58 30 J1925+2106 14 41 43 27.6 84.9 -4.7 -54.3 -17 269 No stop 12 00 30 =1923+210 14 43 44 27.9 85.2 -4.7 -54.3 103 277 11 58 31 12 01 30 J1931+2243 14 44 44 28.0 83.0 -4.8 -54.9 43 277 12 01 30 12 03 00 =1929+226 14 46 14 28.3 83.3 -4.8 -54.9 90 283 12 01 31 12 03 00 J1925+2106 14 46 14 28.4 85.6 -4.7 -54.3 -17 283 No stop 12 05 00 =1923+210 14 48 14 28.8 85.9 -4.6 -54.4 103 290 12 03 01 12 06 00 J1931+2243 14 49 15 28.9 83.7 -4.7 -55.0 43 290 12 06 00 12 07 30 =1929+226 14 50 45 29.2 83.9 -4.7 -55.1 90 296 12 06 01 12 07 30 J1925+2106 14 50 45 29.3 86.3 -4.6 -54.4 -17 296 No stop 12 09 30 =1923+210 14 52 45 29.6 86.6 -4.6 -54.4 103 304 12 07 31 12 10 30 J1931+2243 14 53 45 29.7 84.4 -4.6 -55.1 43 304 12 10 30 12 12 00 =1929+226 14 55 16 30.0 84.6 -4.6 -55.2 90 310 12 10 31 12 12 00 J1925+2106 14 55 16 30.1 87.0 -4.5 -54.5 -17 310 No stop 12 14 00 =1923+210 14 57 16 30.5 87.3 -4.5 -54.5 103 317 12 12 01 12 15 00 J1931+2243 14 58 16 30.6 85.1 -4.6 -55.2 43 317 12 15 00 12 16 30 =1929+226 14 59 46 30.9 85.3 -4.5 -55.2 90 323 12 15 01 12 16 30 J1925+2106 14 59 46 31.0 87.7 -4.4 -54.5 -17 323 No stop 12 18 30 =1923+210 15 01 47 31.4 88.0 -4.4 -54.5 103 331 12 16 31 Schedule for YEBES40M (Code Ys ) 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 02 47 31.5 85.8 -4.5 -55.3 43 331 12 19 30 12 21 00 =1929+226 15 04 17 31.7 86.0 -4.5 -55.3 90 337 12 19 31 12 21 00 J1925+2106 15 04 17 31.8 88.4 -4.4 -54.6 -17 337 No stop 12 23 00 =1923+210 15 06 17 32.2 88.7 -4.3 -54.6 103 344 12 21 01 12 24 00 J1931+2243 15 07 18 32.3 86.5 -4.4 -55.4 43 344 12 24 00 12 25 30 =1929+226 15 08 48 32.6 86.7 -4.4 -55.4 90 350 12 24 01 12 25 30 J1925+2106 15 08 48 32.7 89.1 -4.3 -54.6 -17 350 No stop 12 27 30 =1923+210 15 10 48 33.1 89.5 -4.3 -54.6 103 358 12 25 31 12 28 30 J1931+2243 15 11 48 33.2 87.2 -4.3 -55.4 43 358 12 28 30 12 30 00 =1929+226 15 13 19 33.5 87.4 -4.3 -55.4 90 364 12 28 31 12 30 00 J1925+2106 15 13 19 33.6 89.9 -4.2 -54.6 -17 364 No stop 12 32 00 =1923+210 15 15 19 33.9 90.2 -4.2 -54.6 103 372 12 30 01 12 33 00 J1931+2243 15 16 19 34.0 87.9 -4.3 -55.5 43 372 12 33 00 12 34 30 =1929+226 15 17 49 34.3 88.1 -4.2 -55.5 90 377 12 33 01 12 34 30 J1925+2106 15 17 49 34.4 90.6 -4.1 -54.6 -17 377 No stop 12 36 30 =1923+210 15 19 50 34.8 90.9 -4.1 -54.6 103 385 12 34 31 12 37 30 J1931+2243 15 20 50 34.9 88.6 -4.2 -55.5 43 385 12 37 30 12 39 00 =1929+226 15 22 20 35.2 88.8 -4.2 -55.5 90 391 12 37 31 12 39 00 J1925+2106 15 22 20 35.3 91.3 -4.1 -54.6 -18 391 No stop 12 41 00 =1923+210 15 24 20 35.6 91.7 -4.0 -54.6 102 399 12 39 01 12 42 00 J1931+2243 15 25 21 35.7 89.3 -4.1 -55.5 42 399 12 42 00 12 43 30 =1929+226 15 26 51 36.0 89.6 -4.1 -55.5 90 404 12 42 01 12 43 30 J1925+2106 15 26 51 36.1 92.1 -4.0 -54.5 -18 404 No stop 12 45 30 =1923+210 15 28 51 36.5 92.4 -4.0 -54.5 102 412 12 43 31 12 46 30 J1931+2243 15 29 51 36.6 90.0 -4.0 -55.5 42 412 12 46 30 12 48 00 =1929+226 15 31 22 36.9 90.3 -4.0 -55.5 90 418 12 46 31 12 48 00 J1925+2106 15 31 22 37.0 92.8 -3.9 -54.5 -18 418 No stop 12 50 00 =1923+210 15 33 22 37.4 93.2 -3.9 -54.5 102 426 12 48 01 12 51 00 J1931+2243 15 34 22 37.5 90.8 -4.0 -55.5 42 426 12 51 00 12 52 30 =1929+226 15 35 52 37.7 91.0 -3.9 -55.5 90 432 12 51 01 Schedule for YEBES40M (Code Ys ) 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 15 35 52 37.8 93.6 -3.8 -54.4 -18 432 No stop 12 54 30 =1923+210 15 37 53 38.2 94.0 -3.8 -54.4 102 439 12 52 31 12 55 30 J1931+2243 15 38 53 38.3 91.5 -3.9 -55.5 42 439 12 55 30 12 57 00 =1929+226 15 40 23 38.6 91.8 -3.9 -55.5 90 445 12 55 31 12 57 00 J1925+2106 15 40 23 38.7 94.4 -3.8 -54.3 -18 445 No stop 12 59 00 =1923+210 15 42 23 39.1 94.8 -3.7 -54.3 102 453 12 57 01 13 00 00 J1931+2243 15 43 24 39.2 92.3 -3.8 -55.5 42 453 13 00 00 13 01 30 =1929+226 15 44 54 39.5 92.5 -3.8 -55.4 90 459 13 00 01 13 01 30 J1925+2106 15 44 54 39.5 95.2 -3.7 -54.3 -18 459 No stop 13 03 30 =1923+210 15 46 54 39.9 95.5 -3.7 -54.2 102 466 13 01 31 13 04 30 J1931+2243 15 47 54 40.0 93.1 -3.7 -55.4 42 466 13 04 30 13 06 00 =1929+226 15 49 24 40.3 93.3 -3.7 -55.4 90 472 13 04 31 13 07 00 J1925+2106 15 50 25 40.6 96.2 -3.6 -54.1 42 472 13 07 00 13 09 00 =1923+210 15 52 25 41.0 96.5 -3.6 -54.1 120 480 13 07 01 13 11 00 J1850+2825 15 54 25 52.1 94.5 -2.9 -59.5 94 480 13 11 00 13 17 00 =1848+283 16 00 26 53.2 95.6 -2.8 -59.4 360 503 13 11 01 13 18 00 J1850+2825 16 01 26 53.4 95.8 -2.8 -59.3 45 503 13 18 00 13 23 00 =1848+283 16 06 27 54.4 96.7 -2.7 -59.2 300 523 13 18 01 13 24 00 J1850+2825 16 07 27 54.6 96.9 -2.7 -59.1 45 523 13 24 00 13 30 00 =1848+283 16 13 28 55.7 98.1 -2.6 -58.8 360 546 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: ys40_4cm LO taken from D.Grahams S/X configuration for EK028A Setup group: 3 Station: YEBES40M 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= 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 7650.00 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 2 1 2 3 4 3 4 5 6 5 6 7 8 7 8 BBC SB= L L U U L L U U L L U U L L U U IF = A C A C A C A C A C A C A C A C The following frequency sets based on these setups were used. Frequency Set: 6 Setup file default. Used pcal sets: 1 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= 741.49 741.49 741.49 741.49 757.49 757.49 757.49 757.49 773.49 773.49 773.49 773.49 789.49 789.49 789.49 789.49 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: 6 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S9 S11 S13 S15 PCALXB2= S2 S4 S6 S8 S10 S12 S14 S16 PCALFR1= 490 510 490 510 490 510 490 510 PCALFR2= 490 510 490 510 490 510 490 510 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