COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: J1715+2145 imaging @ C-band Exp. Code: EG103B Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Leonid Gurvits Address: JIVE Oude Hoogeveensedijk 4 7991 PD Dwingeloo The Netherlands Phone: +31-521-596514 EMAIL: lgurvits@jive.eu Fax: Phone during observation: +31-521-596500 Observing mode: Notes: Based on the example eg103a.key file provided by Z. Paragi COVER LETTER: This is the schedule for the 6 cm run EG103B on 06 June 2019 (DOY 157 ~ 100*pi/2) 15 antennas + 4_Nt, MERLIN: Jb2, Wb, Ef, Mc, Nt, O8, T6, Ur, Tr, Ys, Hh, Sv, Zc, Bd, Ir, MER A standard C-band setup with 1 Gbps. Thanks! Leonid Gurvits Schedule for MEDICINA (Code Mc ) Page 2 J1715+2145 imaging @ C-band 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 ---------------------------------------------------------------------------------------- --- Thu 6 Jun 2019 Day 157 --- Next scan frequencies: 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 Next BBC frequencies: 342.49 342.49 342.49 342.49 374.49 374.49 374.49 374.49 406.49 406.49 406.49 406.49 438.49 438.49 438.49 438.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16 30 00 1156+295 10 15 47 64.2 477.7 -1.7 -46.3 0 0 16 30 00 16 40 00 --- 10 25 49 65.8 481.3 -1.6 -44.2 600 77 16 30 01 16 41 30 3C286 10 27 19 51.3 455.3 -3.1 -55.4 51 77 16 41 30 16 51 30 --- 10 37 21 53.1 457.3 -2.9 -55.1 600 155 16 41 31 17 24 00 1713+21M 11 09 56 14.0 433.1 -6.1 -47.3 1857 155 17 24 00 17 34 00 --- 11 19 58 15.7 434.7 -5.9 -47.8 600 232 17 24 01 17 34 30 J1716+2152 11 20 28 15.7 434.6 -5.9 -47.8 26 232 17 34 30 17 35 30 =1714+219 11 21 28 15.9 434.8 -5.9 -47.8 60 240 17 34 31 17 36 00 1713+21M 11 21 58 16.1 435.1 -5.9 -47.9 26 240 17 36 00 17 46 00 --- 11 32 00 17.8 436.7 -5.7 -48.3 600 317 17 36 01 17 46 30 1713+21M 11 32 30 17.9 436.8 -5.7 -48.4 27 317 17 46 30 17 56 30 --- 11 42 31 19.6 438.4 -5.6 -48.8 600 394 17 46 31 17 57 00 1713+21M 11 43 01 19.7 438.5 -5.6 -48.8 27 394 17 57 00 18 07 00 --- 11 53 03 21.5 440.1 -5.4 -49.1 600 471 17 57 01 ---------- Calibrator ---------- 18 10 00 1739+522 11 56 03 35.6 408.8 -5.8 -61.1 134 471 18 10 00 18 11 00 --- 11 57 04 35.8 408.9 -5.7 -61.2 60 479 18 10 01 18 14 00 J1716+2152 12 00 04 22.6 441.0 -5.3 -49.4 134 479 18 14 00 18 15 00 =1714+219 12 01 04 22.8 441.2 -5.3 -49.4 60 487 18 14 01 18 15 30 1713+21M 12 01 34 23.0 441.5 -5.2 -49.4 26 487 18 15 30 18 25 30 --- 12 11 36 24.7 443.2 -5.1 -49.7 600 564 18 15 31 18 26 00 1713+21M 12 12 06 24.8 443.2 -5.1 -49.7 27 564 18 26 00 18 36 00 --- 12 22 08 26.6 444.9 -4.9 -49.9 600 642 18 26 01 18 36 30 1713+21M 12 22 38 26.7 445.0 -4.9 -49.9 27 642 18 36 30 18 46 30 --- 12 32 39 28.5 446.7 -4.7 -50.0 600 719 18 36 31 Schedule for MEDICINA (Code Mc ) Page 3 J1715+2145 imaging @ C-band 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 ---------------------------------------------------------------------------------------- --- Thu 6 Jun 2019 Day 157 --- 18 47 00 J1716+2152 12 33 10 28.5 446.5 -4.7 -50.1 26 719 18 47 00 18 48 00 =1714+219 12 34 10 28.7 446.7 -4.7 -50.1 60 727 18 47 01 18 48 30 1713+21M 12 34 40 28.8 447.0 -4.7 -50.0 26 727 18 48 30 18 58 30 --- 12 44 41 30.6 448.7 -4.5 -50.1 600 804 18 48 31 18 59 00 1713+21M 12 45 12 30.7 448.8 -4.5 -50.1 27 804 18 59 00 19 09 00 --- 12 55 13 32.5 450.6 -4.3 -50.1 600 881 18 59 01 19 09 30 1713+21M 12 55 43 32.6 450.7 -4.3 -50.1 27 881 19 09 30 19 19 30 --- 13 05 45 34.4 452.5 -4.2 -50.1 600 958 19 09 31 19 20 00 J1716+2152 13 06 15 34.4 452.3 -4.2 -50.1 26 958 19 20 00 19 21 00 =1714+219 13 07 15 34.6 452.5 -4.2 -50.1 60 966 19 20 01 19 21 30 1713+21M 13 07 45 34.7 452.8 -4.1 -50.1 26 966 19 21 30 19 31 30 --- 13 17 47 36.5 454.7 -4.0 -49.9 600 1043 19 21 31 19 32 00 1713+21M 13 18 17 36.6 454.8 -4.0 -49.9 27 1043 19 32 00 19 42 00 --- 13 28 19 38.4 456.7 -3.8 -49.7 600 1121 19 32 01 19 42 30 1713+21M 13 28 49 38.5 456.8 -3.8 -49.7 27 1121 19 42 30 19 52 30 --- 13 38 50 40.2 458.7 -3.6 -49.4 600 1198 19 42 31 19 53 00 J1716+2152 13 39 20 40.2 458.5 -3.6 -49.4 26 1198 19 53 00 19 54 00 =1714+219 13 40 21 40.4 458.7 -3.6 -49.4 60 1206 19 53 01 19 54 30 1713+21M 13 40 51 40.6 459.1 -3.6 -49.3 26 1206 19 54 30 20 04 30 --- 13 50 52 42.3 461.1 -3.4 -48.9 600 1283 19 54 31 20 05 00 1713+21M 13 51 22 42.4 461.2 -3.4 -48.8 27 1283 20 05 00 20 15 00 --- 14 01 24 44.2 463.4 -3.2 -48.3 600 1360 20 05 01 20 15 30 1713+21M 14 01 54 44.3 463.5 -3.2 -48.3 27 1360 20 15 30 20 25 30 --- 14 11 56 46.0 465.7 -3.1 -47.7 600 1438 20 15 31 20 26 00 J1716+2152 14 12 26 46.0 465.5 -3.1 -47.8 26 1438 20 26 00 20 27 00 =1714+219 14 13 26 46.2 465.7 -3.1 -47.7 60 1445 20 26 01 20 27 30 1713+21M 14 13 56 46.3 466.1 -3.0 -47.5 26 1445 20 27 30 20 37 30 --- 14 23 58 48.0 468.5 -2.9 -46.7 600 1523 20 27 31 20 38 00 1713+21M 14 24 28 48.1 468.6 -2.9 -46.7 27 1523 20 38 00 20 48 00 --- 14 34 29 49.8 471.0 -2.7 -45.8 600 1600 20 38 01 Schedule for MEDICINA (Code Mc ) Page 4 J1715+2145 imaging @ C-band 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 ---------------------------------------------------------------------------------------- --- Thu 6 Jun 2019 Day 157 --- 20 48 30 1713+21M 14 35 00 49.9 471.2 -2.7 -45.7 27 1600 20 48 30 20 58 30 --- 14 45 01 51.5 473.8 -2.5 -44.6 600 1677 20 48 31 20 59 00 J1716+2152 14 45 31 51.6 473.5 -2.5 -44.8 26 1677 20 59 00 21 00 00 =1714+219 14 46 31 51.7 473.8 -2.5 -44.7 60 1685 20 59 01 21 00 30 1713+21M 14 47 01 51.9 474.3 -2.5 -44.4 26 1685 21 00 30 21 10 30 --- 14 57 03 53.5 477.1 -2.3 -43.1 600 1762 21 00 31 21 11 00 1713+21M 14 57 33 53.6 477.2 -2.3 -43.1 27 1762 21 11 00 21 21 00 --- 15 07 35 55.1 480.2 -2.1 -41.6 600 1840 21 11 01 21 21 30 1713+21M 15 08 05 55.2 480.3 -2.1 -41.5 27 1840 21 21 30 21 31 30 --- 15 18 07 56.7 483.5 -2.0 -39.8 600 1917 21 21 31 21 32 00 J1716+2152 15 18 37 56.8 483.2 -2.0 -40.0 26 1917 21 32 00 21 33 00 =1714+219 15 19 37 56.9 483.6 -2.0 -39.8 60 1925 21 32 01 21 33 30 1713+21M 15 20 07 57.0 484.1 -1.9 -39.4 26 1925 21 33 30 21 43 30 --- 15 30 09 58.5 487.5 -1.8 -37.5 600 2002 21 33 31 21 44 00 1713+21M 15 30 39 58.5 487.7 -1.8 -37.4 27 2002 21 44 00 21 54 00 --- 15 40 40 59.9 491.4 -1.6 -35.2 600 2079 21 44 01 21 54 30 1713+21M 15 41 10 60.0 491.6 -1.6 -35.0 27 2079 21 54 30 22 04 30 --- 15 51 12 61.3 495.5 -1.4 -32.5 600 2156 21 54 31 22 05 00 J1716+2152 15 51 42 61.3 495.3 -1.4 -32.7 26 2156 22 05 00 22 06 00 =1714+219 15 52 42 61.5 495.7 -1.4 -32.5 60 2164 22 05 01 22 06 30 1713+21M 15 53 12 61.5 496.4 -1.4 -32.0 25 2164 22 06 30 22 16 30 --- 16 03 14 62.7 500.6 -1.2 -29.1 600 2241 22 06 31 22 17 00 1713+21M 16 03 44 62.8 500.9 -1.2 -29.0 27 2241 22 17 00 22 27 00 --- 16 13 46 63.8 505.5 -1.0 -25.8 600 2319 22 17 01 ---------- Ef pointing check please ---------- 22 27 30 1713+21M 16 14 16 63.9 505.7 -1.0 -25.6 27 2319 22 27 30 22 37 30 --- 16 24 17 64.8 510.6 -0.9 -22.1 600 2396 22 27 31 ---------- Calibrator ---------- 22 40 30 1739+522 16 27 18 75.6 411.3 -1.2 -114.8 44 2396 22 40 30 22 41 30 --- 16 28 18 75.7 411.0 -1.2 -115.3 60 2404 22 40 31 Schedule for MEDICINA (Code Mc ) Page 5 J1715+2145 imaging @ C-band 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 ---------------------------------------------------------------------------------------- --- Thu 6 Jun 2019 Day 157 --- 22 44 30 J1716+2152 16 31 19 65.5 513.7 -0.8 -19.9 40 2404 22 44 30 22 45 30 =1714+219 16 32 19 65.5 514.3 -0.7 -19.5 60 2411 22 44 31 22 46 00 1713+21M 16 32 49 65.5 515.1 -0.7 -18.9 25 2411 22 46 00 22 56 00 --- 16 42 50 66.2 520.5 -0.6 -14.8 600 2489 22 46 01 22 56 30 1713+21M 16 43 21 66.2 520.8 -0.5 -14.6 27 2489 22 56 30 23 06 30 --- 16 53 22 66.7 526.5 -0.4 -10.3 600 2566 22 56 31 23 07 00 1713+21M 16 53 52 66.8 526.8 -0.4 -10.1 27 2566 23 07 00 23 17 00 --- 17 03 54 67.1 532.7 -0.2 -5.6 600 2643 23 07 01 23 17 30 J1716+2152 17 04 24 67.2 532.4 -0.2 -5.8 25 2643 23 17 30 23 18 30 =1714+219 17 05 24 67.2 533.0 -0.2 -5.4 60 2651 23 17 31 23 19 00 1713+21M 17 05 54 67.1 533.9 -0.2 -4.7 25 2651 23 19 00 23 29 00 --- 17 15 56 67.2 539.9 -0.0 -0.1 600 2728 23 19 01 23 29 30 1713+21M 17 16 26 67.2 540.2 0.0 0.1 27 2728 23 29 30 23 39 30 --- 17 26 28 67.1 546.2 0.2 4.7 600 2806 23 29 31 23 40 00 1713+21M 17 26 58 67.1 546.5 0.2 5.0 27 2806 23 40 00 23 50 00 --- 17 36 59 66.8 552.4 0.3 9.5 600 2883 23 40 01 23 50 30 J1716+2152 17 37 29 66.9 552.2 0.3 9.3 26 2883 23 50 30 23 51 30 =1714+219 17 38 30 66.9 552.8 0.4 9.8 60 2891 23 50 31 --- Start: Thu 6 Jun 2019 Day 157 -- Stop: Fri 7 Jun 2019 Day 158 --- 23 52 00 1713+21M 17 39 00 66.7 553.5 0.4 10.3 25 2891 23 52 00 00 02 00 --- 17 49 01 66.2 559.2 0.5 14.6 600 2968 23 52 01 00 02 30 1713+21M 17 49 31 66.2 559.5 0.6 14.9 27 2968 00 02 30 00 12 30 --- 17 59 33 65.5 565.0 0.7 18.9 600 3045 00 02 31 00 13 00 1713+21M 18 00 03 65.5 565.2 0.7 19.1 27 3045 00 13 00 00 23 00 --- 18 10 05 64.7 570.4 0.9 22.8 600 3123 00 13 01 00 23 30 J1716+2152 18 10 35 64.8 570.3 0.9 22.8 26 3123 00 23 30 00 24 30 =1714+219 18 11 35 64.7 570.8 0.9 23.2 60 3130 00 23 31 00 25 00 1713+21M 18 12 05 64.5 571.4 0.9 23.6 25 3130 00 25 00 00 35 00 --- 18 22 07 63.5 576.2 1.1 26.9 600 3208 00 25 01 Schedule for MEDICINA (Code Mc ) Page 6 J1715+2145 imaging @ C-band 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 ---------------------------------------------------------------------------------------- --- Fri 7 Jun 2019 Day 158 --- 00 35 30 1713+21M 18 22 37 63.4 576.4 1.1 27.1 27 3208 00 35 30 00 45 30 --- 18 32 38 62.3 580.9 1.3 30.2 600 3285 00 35 31 00 46 00 1713+21M 18 33 09 62.3 581.1 1.3 30.3 27 3285 00 46 00 00 56 00 --- 18 43 10 61.0 585.3 1.4 33.1 600 3362 00 46 01 00 56 30 J1716+2152 18 43 40 61.2 585.3 1.4 33.1 25 3362 00 56 30 00 57 30 =1714+219 18 44 40 61.0 585.7 1.5 33.3 60 3370 00 56 31 00 58 00 1713+21M 18 45 11 60.8 586.1 1.5 33.6 25 3370 00 58 00 01 08 00 --- 18 55 12 59.4 589.9 1.7 36.0 600 3447 00 58 01 01 08 30 1713+21M 18 55 42 59.4 590.1 1.7 36.1 27 3447 01 08 30 01 18 30 --- 19 05 44 58.0 593.7 1.8 38.2 600 3524 01 08 31 01 19 00 1713+21M 19 06 14 57.9 593.9 1.8 38.3 27 3524 01 19 00 01 29 00 --- 19 16 16 56.4 597.2 2.0 40.2 600 3602 01 19 01 01 29 30 J1716+2152 19 16 46 56.6 597.2 2.0 40.2 25 3602 01 29 30 01 30 30 =1714+219 19 17 46 56.4 597.5 2.0 40.4 60 3610 01 29 31 01 31 00 1713+21M 19 18 16 56.1 597.8 2.0 40.5 25 3610 01 31 00 01 41 00 --- 19 28 18 54.6 600.9 2.2 42.1 600 3687 01 31 01 01 41 30 1713+21M 19 28 48 54.5 601.0 2.2 42.2 27 3687 01 41 30 01 51 30 --- 19 38 49 52.9 603.9 2.4 43.6 600 3764 01 41 31 01 52 00 1713+21M 19 39 19 52.8 604.1 2.4 43.7 27 3764 01 52 00 02 02 00 --- 19 49 21 51.2 606.8 2.6 44.9 600 3841 01 52 01 02 02 30 J1716+2152 19 49 51 51.3 606.8 2.5 44.9 25 3841 02 02 30 02 03 30 =1714+219 19 50 51 51.2 607.1 2.6 45.0 60 3849 02 02 31 02 04 00 1713+21M 19 51 21 50.9 607.3 2.6 45.1 25 3849 02 04 00 02 14 00 --- 20 01 23 49.2 609.8 2.8 46.1 600 3926 02 04 01 02 14 30 1713+21M 20 01 53 49.1 610.0 2.8 46.2 27 3926 02 14 30 02 24 30 --- 20 11 55 47.4 612.4 2.9 47.0 600 4004 02 14 31 02 25 00 1713+21M 20 12 25 47.4 612.5 2.9 47.1 27 4004 02 25 00 02 30 00 --- 20 17 26 46.5 613.6 3.0 47.4 300 4042 02 25 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.C1024 --- 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: 11 Station: MEDICINA Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U 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 = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 4 Setup file default. Used with PCAL = off LO sum= 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 BBC fr= 342.49 342.49 342.49 342.49 374.49 374.49 374.49 374.49 406.49 406.49 406.49 406.49 438.49 438.49 438.49 438.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 4 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 1713+21M 17 13 12.457730 * 17 15 20.063100 17 16 10.206358 0.00 21 49 14.88987 * 21 45 56.33400 21 44 44.14027 0.00 From catalog imbedded in main SCHED input file. mid-point between the two targets * 1156+295 11 56 57.786211 * 11 59 31.833912 12 00 30.776679 0.00 J1159+2914 29 31 25.73880 * 29 14 43.82690 29 08 28.87403 0.00 J1159+29 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 78215 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 01.961223 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 48.21904 0.16 1328+307 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 observations. 1714+219 17 14 03.743305 * 17 16 11.190717 17 17 01.274565 0.11 * J1716+2152 21 55 28.56442 * 21 52 13.66744 21 51 02.84436 0.16 J1716+21 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 136 observations. * 1739+522 17 39 29.003554 * 17 40 36.977851 17 41 05.059591 0.19 J1740+5211 52 13 10.43847 * 52 11 43.40742 52 11 11.28812 0.15 J1740+52 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 215623 observations. SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline 1713+21M sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 8.417 1480.333 1156+295 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.167 35.000 3C286 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.167 34.873 J1716+2152 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 14 + 0.283 49.001 1739+522 sess219.C1024 1 2 3 4 5 6 7 8 9 10 11 16 + 0.033 5.098 EFFECT OF SOLAR CORONA 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) 1713+21M 135.4 1156+295 91.5 3C286 107.3 J1716+2152 135.2 1739+522 104.6 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