COVER INFORMATION Station: TORUN (Code Tr ) Experiment: Radioastron-EVN-Gb-Ev: 0642+449 Exp. Code: gk047a Schedule Version: 1.00 Processed by SCHED version: 10.20 Release of about July 12, 2012 PI: Yuri Kovalev Address: ASC Lebedev Profsoyuznaya 84/32 117997 Moscow, Russia Phone: +7-495-3332167 EMAIL: yyk@asc.rssi.ru Fax: +7-495-3332378 Phone during observation: +7-915-1546281 Observing mode: L-band, dual-pol Notes: L-band, Radioastron-compatible frequency setup PCAL is ON Mk5 disk packs should be sent for correlation to Bonn Schedule for TORUN (Code Tr ) Page 2 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- Next scan frequencies: 1668.00 1668.00 1668.00 1668.00 Next BBC frequencies: 632.00 632.00 632.00 632.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 10 00 00 0642+449 22 23 17 18.3 37.1 -8.4 -30.7 0 0 10 00 00 10 09 30 --- 22 32 48 19.1 38.6 -8.2 -31.9 570 18 10 00 01 10 10 00 0642+449 22 33 19 19.2 38.7 -8.2 -32.0 24 18 10 10 00 10 19 30 --- 22 42 50 20.1 40.2 -8.1 -33.2 570 37 10 10 01 10 20 00 0642+449 22 43 20 20.1 40.3 -8.1 -33.2 24 37 10 20 00 10 29 30 --- 22 52 52 21.1 41.8 -7.9 -34.4 570 55 10 20 01 10 30 00 0642+449 22 53 22 21.1 41.9 -7.9 -34.4 24 55 10 30 00 10 39 30 --- 23 02 53 22.1 43.4 -7.7 -35.6 570 74 10 30 01 10 40 00 0642+449 23 03 23 22.1 43.5 -7.7 -35.6 24 74 10 40 00 10 49 20 --- 23 12 45 23.1 44.9 -7.6 -36.7 560 92 10 40 01 10 49 50 0642+449 23 13 15 23.2 45.0 -7.6 -36.8 24 92 10 49 50 10 59 10 --- 23 22 37 24.2 46.4 -7.4 -37.8 560 110 10 49 51 10 59 40 0642+449 23 23 07 24.2 46.5 -7.4 -37.9 24 110 10 59 40 11 09 00 --- 23 32 28 25.3 47.9 -7.3 -39.0 560 128 10 59 41 11 09 30 0642+449 23 32 58 25.3 48.0 -7.2 -39.0 24 128 11 09 30 11 18 50 --- 23 42 20 26.4 49.4 -7.1 -40.0 560 146 11 09 31 11 19 20 0642+449 23 42 50 26.4 49.5 -7.1 -40.1 24 146 11 19 20 11 28 40 --- 23 52 11 27.5 50.9 -6.9 -41.1 560 164 11 19 21 11 29 10 0642+449 23 52 42 27.6 51.0 -6.9 -41.2 24 164 11 29 10 11 38 30 --- 00 02 03 28.7 52.4 -6.8 -42.1 560 182 11 29 11 11 39 00 0642+449 00 02 33 28.7 52.5 -6.7 -42.2 24 182 11 39 00 11 48 20 --- 00 11 55 29.9 53.9 -6.6 -43.2 560 200 11 39 01 11 49 00 0642+449 00 12 35 29.9 54.0 -6.6 -43.2 34 200 11 49 00 11 58 30 --- 00 22 06 31.1 55.4 -6.4 -44.2 570 218 11 49 01 11 59 00 0642+449 00 22 36 31.2 55.5 -6.4 -44.2 24 218 11 59 00 12 08 30 --- 00 32 08 32.4 56.9 -6.3 -45.2 570 237 11 59 01 12 09 00 0642+449 00 32 38 32.4 57.0 -6.2 -45.2 24 237 12 09 00 12 18 30 --- 00 42 10 33.6 58.4 -6.1 -46.1 570 255 12 09 01 Schedule for TORUN (Code Tr ) Page 3 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- 12 19 00 0642+449 00 42 40 33.7 58.4 -6.1 -46.2 24 255 12 19 00 12 28 30 --- 00 52 11 34.9 59.8 -5.9 -47.1 570 274 12 19 01 12 29 00 0642+449 00 52 41 35.0 59.9 -5.9 -47.1 24 274 12 29 00 12 38 00 --- 01 01 43 36.2 61.2 -5.8 -47.9 540 291 12 29 01 12 38 30 0642+449 01 02 13 36.2 61.3 -5.8 -48.0 24 291 12 38 30 12 47 30 --- 01 11 14 37.4 62.6 -5.6 -48.8 540 308 12 38 31 12 48 00 0642+449 01 11 44 37.5 62.7 -5.6 -48.8 24 308 12 48 00 12 57 00 --- 01 20 46 38.7 64.0 -5.4 -49.6 540 326 12 48 01 12 57 30 0642+449 01 21 16 38.8 64.1 -5.4 -49.6 24 326 12 57 30 13 06 30 --- 01 30 17 40.0 65.5 -5.3 -50.4 540 343 12 57 31 13 07 00 0642+449 01 30 48 40.1 65.5 -5.3 -50.4 24 343 13 07 00 13 16 00 --- 01 39 49 41.3 66.9 -5.1 -51.1 540 361 13 07 01 13 16 30 0642+449 01 40 19 41.4 66.9 -5.1 -51.2 24 361 13 16 30 13 25 30 --- 01 49 21 42.6 68.3 -5.0 -51.9 540 378 13 16 31 13 26 00 0642+449 01 49 51 42.7 68.3 -5.0 -51.9 24 378 13 26 00 13 35 00 --- 01 58 52 44.0 69.7 -4.8 -52.6 540 395 13 26 01 13 36 00 0642+449 01 59 52 44.1 69.8 -4.8 -52.7 54 395 13 36 00 13 45 30 --- 02 09 24 45.5 71.3 -4.6 -53.3 570 414 13 36 01 13 46 00 0642+449 02 09 54 45.5 71.4 -4.6 -53.4 24 414 13 46 00 13 55 30 --- 02 19 26 46.9 72.8 -4.5 -54.0 570 432 13 46 01 13 56 00 0642+449 02 19 56 47.0 72.9 -4.5 -54.0 24 432 13 56 00 14 05 30 --- 02 29 27 48.3 74.3 -4.3 -54.6 570 451 13 56 01 14 06 00 0642+449 02 29 57 48.4 74.4 -4.3 -54.7 24 451 14 06 00 14 15 30 --- 02 39 29 49.8 75.9 -4.1 -55.2 570 469 14 06 01 14 16 00 0642+449 02 39 59 49.9 76.0 -4.1 -55.2 24 469 14 16 00 14 25 00 --- 02 49 00 51.2 77.4 -4.0 -55.7 540 486 14 16 01 14 25 30 0642+449 02 49 30 51.3 77.5 -4.0 -55.8 24 486 14 25 30 14 34 30 --- 02 58 32 52.6 78.9 -3.8 -56.2 540 504 14 25 31 14 35 00 0642+449 02 59 02 52.7 79.0 -3.8 -56.2 24 504 14 35 00 14 44 00 --- 03 08 04 54.0 80.5 -3.7 -56.6 540 521 14 35 01 Schedule for TORUN (Code Tr ) Page 4 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- 14 44 30 0642+449 03 08 34 54.1 80.6 -3.6 -56.7 24 521 14 44 30 14 53 30 --- 03 17 35 55.4 82.1 -3.5 -57.0 540 539 14 44 31 14 54 00 0642+449 03 18 05 55.5 82.2 -3.5 -57.0 24 539 14 54 00 15 03 00 --- 03 27 07 56.8 83.7 -3.3 -57.3 540 556 14 54 01 15 08 26 0851+202 03 32 33 21.4 84.7 -5.4 -39.5 177 556 15 08 26 15 17 46 --- 03 42 15 22.8 86.6 -5.2 -39.7 560 574 15 08 27 15 23 00 0642+449 03 47 10 59.8 87.4 -3.0 -57.8 163 574 15 23 00 15 32 30 --- 03 56 41 61.2 89.2 -2.8 -57.9 570 593 15 23 01 15 33 00 0642+449 03 57 12 61.3 89.3 -2.8 -57.9 24 593 15 33 00 15 42 30 --- 04 06 43 62.8 91.2 -2.7 -57.8 570 611 15 33 01 15 43 00 0642+449 04 07 13 62.8 91.3 -2.7 -57.8 24 611 15 43 00 15 52 30 --- 04 16 45 64.3 93.3 -2.5 -57.7 570 629 15 43 01 15 53 00 0642+449 04 17 15 64.3 93.4 -2.5 -57.7 24 629 15 53 00 16 02 30 --- 04 26 46 65.8 95.6 -2.3 -57.4 570 648 15 53 01 16 07 28 0851+202 04 31 46 30.3 96.7 -4.4 -39.4 150 648 16 07 28 16 16 38 --- 04 41 17 31.7 98.7 -4.2 -39.2 550 665 16 07 29 16 21 47 0642+449 04 46 06 68.6 100.4 -2.0 -56.4 157 665 16 21 47 16 30 57 --- 04 55 38 70.0 103.1 -1.9 -55.6 550 683 16 21 48 16 31 39 0642+449 04 56 00 70.1 103.2 -1.9 -55.5 34 683 16 31 39 16 40 49 --- 05 05 32 71.5 106.1 -1.7 -54.4 550 701 16 31 40 16 41 31 0642+449 05 05 54 71.5 106.3 -1.7 -54.4 34 701 16 41 31 16 50 41 --- 05 15 25 72.9 109.5 -1.5 -52.9 550 719 16 41 32 16 55 40 0851+202 05 20 05 37.4 107.3 -3.6 -37.6 150 719 16 55 40 17 04 50 --- 05 29 36 38.7 109.6 -3.4 -37.0 550 736 16 55 41 17 10 00 0642+449 05 34 28 75.5 117.4 -1.2 -48.8 160 736 17 10 00 17 19 30 --- 05 43 59 76.7 122.1 -1.1 -45.8 570 755 17 10 01 17 20 00 0642+449 05 44 29 76.8 122.4 -1.1 -45.6 23 755 17 20 00 17 29 30 --- 05 54 01 78.0 128.0 -0.9 -41.9 570 773 17 20 01 17 30 00 0642+449 05 54 31 78.0 128.3 -0.9 -41.6 23 773 17 30 00 17 39 30 --- 06 04 02 79.1 134.9 -0.7 -36.8 570 792 17 30 01 Schedule for TORUN (Code Tr ) Page 5 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- 17 40 00 0642+449 06 04 32 79.2 135.3 -0.7 -36.6 23 792 17 40 00 17 49 30 --- 06 14 04 80.1 143.1 -0.6 -30.5 570 810 17 40 01 17 50 10 0642+449 06 14 44 80.2 143.7 -0.5 -30.1 32 810 17 50 10 17 58 40 --- 06 23 36 80.9 152.3 -0.4 -23.2 510 826 17 50 11 17 59 22 0642+449 06 23 58 80.9 152.6 -0.4 -22.9 33 826 17 59 22 18 07 52 --- 06 32 49 81.4 162.3 -0.2 -14.9 510 843 17 59 23 18 12 51 0851+202 06 37 29 47.6 127.8 -2.3 -30.3 157 843 18 12 51 18 22 21 --- 06 47 20 48.8 130.8 -2.1 -28.9 570 861 18 12 52 18 26 57 1328+307 06 51 37 18.4 63.4 -6.7 -38.5 125 861 18 26 57 18 36 27 --- 07 01 28 19.7 65.2 -6.5 -39.2 570 880 18 26 58 18 48 06 0642+449 07 12 50 80.8 209.1 0.4 24.4 411 880 18 48 06 18 56 26 --- 07 21 31 80.1 217.3 0.6 30.9 500 896 18 48 07 18 57 00 0642+449 07 21 45 80.0 217.5 0.6 31.1 25 896 18 57 00 19 06 30 --- 07 31 17 79.1 225.3 0.7 37.0 570 914 18 57 01 19 07 00 0642+449 07 31 47 79.0 225.6 0.7 37.3 23 914 19 07 00 19 16 30 --- 07 41 18 78.0 232.2 0.9 42.0 570 933 19 07 01 19 17 00 0642+449 07 41 48 77.9 232.5 0.9 42.2 23 933 19 17 00 19 26 30 --- 07 51 20 76.7 238.0 1.1 45.9 570 951 19 17 01 19 27 00 0642+449 07 51 50 76.7 238.3 1.1 46.1 23 951 19 27 00 19 36 30 --- 08 01 22 75.4 243.0 1.2 49.0 570 969 19 27 01 19 45 00 1328+307 08 09 53 29.4 77.4 -5.4 -42.8 163 969 19 45 00 19 51 20 --- 08 16 34 30.4 78.6 -5.3 -43.1 380 982 19 45 01 20 00 45 0642+449 08 25 41 72.0 252.6 1.6 53.9 205 982 20 00 45 20 07 45 --- 08 33 02 71.0 255.0 1.8 54.9 420 995 20 00 46 20 13 57 0851+202 08 38 55 56.8 172.8 -0.3 -4.6 189 995 20 13 57 20 20 47 --- 08 46 06 56.9 175.9 -0.2 -2.6 410 1008 20 13 58 20 26 14 1328+307 08 51 14 35.5 85.1 -4.7 -43.9 129 1008 20 26 14 20 32 34 --- 08 57 55 36.5 86.4 -4.6 -44.0 380 1021 20 26 15 20 44 00 0642+449 09 09 03 65.6 264.6 2.4 57.5 317 1021 20 44 00 20 53 30 --- 09 18 34 64.2 266.7 2.5 57.7 570 1039 20 44 01 Schedule for TORUN (Code Tr ) Page 6 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- 20 54 00 0642+449 09 19 04 64.1 266.8 2.5 57.7 24 1039 20 54 00 21 03 30 --- 09 28 36 62.7 268.8 2.7 57.9 570 1057 20 54 01 21 04 00 0642+449 09 29 06 62.6 268.9 2.7 57.9 24 1057 21 04 00 21 13 30 --- 09 38 38 61.2 270.9 2.9 57.9 570 1076 21 04 01 21 14 00 0642+449 09 39 08 61.1 271.0 2.9 57.9 24 1076 21 14 00 21 23 30 --- 09 48 39 59.7 272.8 3.0 57.8 570 1094 21 14 01 21 24 00 0642+449 09 49 09 59.6 272.9 3.0 57.8 24 1094 21 24 00 21 34 00 --- 09 59 11 58.1 274.7 3.2 57.6 600 1113 21 24 01 21 40 56 0851+202 10 06 08 54.3 209.2 1.2 18.1 266 1113 21 40 56 21 50 56 --- 10 16 29 53.5 213.1 1.3 20.4 600 1133 21 40 57 21 57 40 1328+307 10 22 55 49.2 104.5 -3.1 -42.4 171 1133 21 57 40 22 07 50 --- 10 33 26 50.7 107.2 -3.0 -41.7 610 1153 21 57 41 22 20 19 0642+449 10 45 37 51.2 282.5 4.0 55.8 385 1153 22 20 19 22 30 19 --- 10 55 59 49.7 284.2 4.1 55.2 600 1172 22 20 20 22 31 00 0642+449 10 56 20 49.7 284.2 4.1 55.2 34 1172 22 31 00 22 40 30 --- 11 05 52 48.3 285.7 4.3 54.6 570 1190 22 31 01 22 41 00 0642+449 11 06 22 48.2 285.8 4.3 54.6 24 1190 22 41 00 22 50 30 --- 11 15 53 46.9 287.2 4.5 54.0 570 1209 22 41 01 22 51 00 0642+449 11 16 24 46.8 287.3 4.5 53.9 24 1209 22 51 00 23 00 30 --- 11 25 55 45.4 288.8 4.6 53.3 570 1227 22 51 01 23 01 00 0642+449 11 26 25 45.3 288.8 4.6 53.3 24 1227 23 01 00 23 10 30 --- 11 35 57 44.0 290.3 4.8 52.6 570 1245 23 01 01 23 11 00 0642+449 11 36 27 43.9 290.3 4.8 52.6 24 1245 23 11 00 23 21 10 --- 11 46 38 42.5 291.9 5.0 51.8 610 1265 23 11 01 23 28 50 0851+202 11 54 20 42.5 243.6 3.0 34.9 345 1265 23 28 50 23 39 00 --- 12 04 51 41.0 246.3 3.2 35.8 610 1285 23 28 51 23 46 57 1328+307 12 12 30 63.1 139.7 -1.3 -26.8 245 1285 23 46 57 23 57 07 --- 12 23 02 64.1 144.3 -1.1 -24.0 610 1304 23 46 58 Schedule for TORUN (Code Tr ) Page 7 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sun 10 Mar 2013 Day 69 --- 00 09 11 0642+449 12 34 47 36.0 299.0 5.8 47.8 401 1304 00 09 11 00 19 21 --- 12 45 19 34.6 300.5 6.0 46.8 610 1324 00 09 12 00 20 00 0642+449 12 45 38 34.6 300.6 6.0 46.8 32 1324 00 20 00 00 29 30 --- 12 55 10 33.3 302.0 6.1 45.9 570 1342 00 20 01 00 30 00 0642+449 12 55 40 33.3 302.0 6.1 45.9 24 1342 00 30 00 00 39 30 --- 13 05 11 32.1 303.5 6.3 45.0 570 1361 00 30 01 00 40 00 0642+449 13 05 41 32.0 303.5 6.3 44.9 24 1361 00 40 00 00 49 30 --- 13 15 13 30.8 304.9 6.5 44.0 570 1379 00 40 01 00 50 00 0642+449 13 15 43 30.8 305.0 6.5 43.9 24 1379 00 50 00 00 59 30 --- 13 25 15 29.6 306.4 6.6 42.9 570 1398 00 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess113.L256 Matching groups in /usr/local/sched/catalogs/freq.dat: tr18cm E-mail Borkowski 12Mar98, preferred alternative Setup group: 4 Station: TORUN Total bit rate: 256 Format: MKIV1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2300.00 2300.00 2300.00 2300.00 Net SB= L L U U Pol. = RCP LCP RCP LCP BBC = 1 2 1 2 BBC SB= U U L L IF = C A C A The following frequency sets based on these setups were used. Frequency Set: 4 Setup file default. Used pcal sets: 1 LO sum= 1668.00 1668.00 1668.00 1668.00 BBC fr= 632.00 632.00 632.00 632.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 4 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= 1000 1000 13000 13000 0 0 0 0 PCALFR2= 1000 1000 13000 13000 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_off SOURCES USED IN RECORDING SCANS -- Radioastron-EVN-Gb-Ev: 0642+449 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) J0646+4451 06 42 53.021452 * 06 46 32.025999 06 47 31.646758 0.14 * 0642+449 44 54 30.82734 * 44 51 16.59009 44 50 22.84237 0.10 J0646+44 /usr/local/sched/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 125872 observations 10.258 scan and 388.050 baseline hours in setup: sess113.L256 Frequency sets (dups not shown): 1 2 3 4 5 6 8 9 11 12 J0854+2006 08 51 57.250618 * 08 54 48.874930 08 55 36.082187 0.11 * 0851+202 20 17 58.41733 * 20 06 30.64078 20 03 15.97687 0.10 J0854+20 /usr/local/sched/catalogs/sources.vlba OJ287 rfc_2012b Petrov, 2012, unpublished 191510 observations 1.069 scan and 48.286 baseline hours in setup: sess113.L256 Frequency sets (dups not shown): 1 2 3 4 5 6 8 9 11 12 J1331+3030 13 28 49.657778 * 13 31 08.288070 13 31 46.592508 0.20 3C286 30 45 58.64061 * 30 30 32.95925 30 26 13.73130 0.19 * 1328+307 /usr/local/sched/catalogs/sources.vlba J1331+30 rfc_2012b Petrov, 2012, unpublished 542 observations 0.708 scan and 29.036 baseline hours in setup: sess113.L256 Frequency sets (dups not shown): 1 2 3 4 5 6 8 9 12 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) 0642+449 108.3 0851+202 141.3 1328+307 139.5 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