COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: Imaging the jet in NGC 1068 at 5 GHz Exp. Code: EY043A Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Jun Yang Address: Onsala Space Observatory SE-439 92 Onsala Sweden Phone: +46 31 7725531 EMAIL: jun.yang@chalmers.se Fax: +46 31 7725590 Phone during observation: +46 31 7725531 Observing mode: 2048-16-2 Notes: 2048 Mbps, 16x32 MHz, RCP & LCP, 2 bit sampling Reverse phase-referencing observations at 5 GHz Ef: A 10-min gap was left for pointing observations during scans 71-73 Schedule for URUMQI (Code Ur ) Page 2 Imaging the jet in NGC 1068 at 5 GHz 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 210.49 210.49 210.49 210.49 274.49 274.49 274.49 274.49 338.49 338.49 338.49 338.49 402.49 402.49 402.49 402.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 11 30 00 R11-J0243 03 49 53 44.1 203.1 1.1 16.5 0 0 11 30 00 11 32 00 --- 03 51 53 43.9 203.8 1.1 17.0 120 31 11 30 01 11 32 00 NGC1068 03 51 53 44.0 204.0 1.1 17.2 -3 31 No stop 11 36 00 --- 03 55 54 43.7 205.3 1.2 18.1 237 92 11 32 01 11 36 40 J0239-0234 03 56 34 41.0 205.4 1.3 18.2 32 92 11 36 40 11 38 40 =0237-027 03 58 34 40.9 206.0 1.3 18.6 120 123 11 36 41 11 39 20 NGC1068 03 59 14 43.5 206.4 1.3 18.8 32 123 11 39 20 11 43 20 --- 04 03 15 43.1 207.7 1.3 19.7 240 185 11 39 21 11 43 20 R11-J0243 04 03 15 43.0 207.5 1.3 19.6 -3 185 No stop 11 45 50 --- 04 05 46 42.8 208.3 1.4 20.1 147 223 11 43 21 11 46 20 NGC1068 04 06 16 42.9 208.7 1.4 20.4 27 223 11 46 20 11 50 20 --- 04 10 16 42.5 210.0 1.4 21.2 240 285 11 46 21 11 50 20 R11-J0243 04 10 16 42.4 209.7 1.4 21.1 -3 285 No stop 11 52 50 --- 04 12 47 42.2 210.5 1.5 21.6 147 323 11 50 21 11 52 50 NGC1068 04 12 47 42.3 210.7 1.5 21.8 -3 323 No stop 11 57 20 --- 04 17 17 41.9 212.1 1.6 22.7 267 392 11 52 51 11 57 20 R11-J0243 04 17 17 41.8 211.9 1.5 22.6 -3 392 No stop 11 59 50 --- 04 19 48 41.5 212.7 1.6 23.1 147 431 11 57 21 11 59 50 NGC1068 04 19 48 41.6 212.9 1.6 23.2 -3 431 No stop 12 04 20 --- 04 24 19 41.2 214.3 1.7 24.1 267 500 11 59 51 12 05 20 J0239-0234 04 25 19 38.4 214.1 1.7 24.0 52 500 12 05 20 12 07 20 =0237-027 04 27 19 38.2 214.7 1.8 24.4 120 531 12 05 21 12 08 20 NGC1068 04 28 19 40.7 215.5 1.7 24.9 52 531 12 08 20 12 12 20 --- 04 32 20 40.3 216.7 1.8 25.7 240 592 12 08 21 12 12 20 R11-J0243 04 32 20 40.2 216.5 1.8 25.6 -3 592 No stop 12 14 50 --- 04 34 50 40.0 217.2 1.8 26.0 147 631 12 12 21 Schedule for URUMQI (Code Ur ) Page 3 Imaging the jet in NGC 1068 at 5 GHz 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- 12 14 50 NGC1068 04 34 50 40.0 217.4 1.8 26.2 -3 631 No stop 12 19 20 --- 04 39 21 39.5 218.8 1.9 27.0 267 700 12 14 51 12 19 20 R11-J0243 04 39 21 39.5 218.5 1.9 26.9 -3 700 No stop 12 21 50 --- 04 41 51 39.2 219.3 2.0 27.3 147 738 12 19 21 12 22 20 NGC1068 04 42 22 39.2 219.6 2.0 27.6 27 738 12 22 20 12 26 20 --- 04 46 22 38.7 220.8 2.0 28.3 240 800 12 22 21 12 26 20 R11-J0243 04 46 22 38.7 220.5 2.0 28.1 -3 800 No stop 12 28 50 --- 04 48 53 38.4 221.2 2.1 28.6 147 838 12 26 21 12 28 50 NGC1068 04 48 53 38.4 221.5 2.1 28.7 -3 838 No stop 12 33 20 --- 04 53 23 37.9 222.7 2.2 29.5 267 908 12 28 51 12 33 20 R11-J0243 04 53 23 37.8 222.5 2.2 29.4 -3 908 No stop 12 35 50 --- 04 55 54 37.5 223.2 2.2 29.8 147 946 12 33 21 12 35 50 NGC1068 04 55 54 37.6 223.4 2.2 29.9 -3 946 No stop 12 40 20 --- 05 00 25 37.0 224.6 2.3 30.6 267 1015 12 35 51 12 41 20 J0239-0234 05 01 25 34.3 224.1 2.3 30.3 52 1015 12 41 20 12 43 20 =0237-027 05 03 25 34.0 224.6 2.4 30.7 120 1046 12 41 21 12 44 20 NGC1068 05 04 25 36.5 225.7 2.3 31.3 52 1046 12 44 20 12 48 20 --- 05 08 26 36.0 226.8 2.4 31.9 240 1108 12 44 21 12 48 20 R11-J0243 05 08 26 35.9 226.5 2.4 31.8 -3 1108 No stop 12 50 50 --- 05 10 56 35.6 227.2 2.4 32.2 147 1146 12 48 21 12 50 50 NGC1068 05 10 56 35.6 227.4 2.5 32.3 -3 1146 No stop 12 55 20 --- 05 15 27 35.0 228.6 2.5 33.0 267 1215 12 50 51 12 55 20 R11-J0243 05 15 27 35.0 228.4 2.5 32.8 -3 1215 No stop 12 57 50 --- 05 17 57 34.6 229.0 2.6 33.2 147 1254 12 55 21 12 58 20 NGC1068 05 18 27 34.6 229.3 2.6 33.4 27 1254 12 58 20 13 02 20 --- 05 22 28 34.0 230.4 2.6 34.0 240 1315 12 58 21 13 02 20 R11-J0243 05 22 28 34.0 230.1 2.6 33.9 -3 1315 No stop 13 04 50 --- 05 24 59 33.6 230.8 2.7 34.2 147 1354 13 02 21 13 04 50 NGC1068 05 24 59 33.7 231.0 2.7 34.3 -3 1354 No stop 13 09 20 --- 05 29 29 33.1 232.1 2.8 34.9 267 1423 13 04 51 Schedule for URUMQI (Code Ur ) Page 4 Imaging the jet in NGC 1068 at 5 GHz 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- 13 09 20 R11-J0243 05 29 29 33.0 231.9 2.8 34.8 -3 1423 No stop 13 11 50 --- 05 32 00 32.7 232.5 2.8 35.1 147 1462 13 09 21 13 11 50 NGC1068 05 32 00 32.7 232.7 2.8 35.3 -3 1462 No stop 13 16 20 --- 05 36 30 32.0 233.8 2.9 35.8 267 1531 13 11 51 13 17 20 J0239-0234 05 37 31 29.4 233.0 2.9 35.4 52 1531 13 17 20 13 19 20 =0237-027 05 39 31 29.1 233.4 3.0 35.7 120 1562 13 17 21 13 20 20 NGC1068 05 40 31 31.4 234.7 2.9 36.3 52 1562 13 20 20 13 24 20 --- 05 44 32 30.9 235.7 3.0 36.8 240 1623 13 20 21 13 24 20 R11-J0243 05 44 32 30.8 235.5 3.0 36.7 -3 1623 No stop 13 26 50 --- 05 47 02 30.4 236.1 3.0 37.0 147 1662 13 24 21 13 26 50 NGC1068 05 47 02 30.5 236.3 3.1 37.1 -3 1662 No stop 13 31 20 --- 05 51 33 29.8 237.3 3.1 37.6 267 1731 13 26 51 13 31 20 R11-J0243 05 51 33 29.8 237.1 3.1 37.5 -3 1731 No stop 13 33 50 --- 05 54 03 29.4 237.7 3.2 37.8 147 1769 13 31 21 13 34 20 NGC1068 05 54 33 29.3 238.0 3.2 38.0 27 1769 13 34 20 13 38 20 --- 05 58 34 28.7 238.9 3.2 38.4 240 1831 13 34 21 13 38 20 R11-J0243 05 58 34 28.7 238.7 3.2 38.3 -3 1831 No stop 13 40 50 --- 06 01 04 28.3 239.2 3.3 38.6 147 1869 13 38 21 13 40 50 NGC1068 06 01 04 28.3 239.4 3.3 38.7 -3 1869 No stop 13 45 20 --- 06 05 35 27.6 240.4 3.4 39.1 267 1938 13 40 51 13 45 20 R11-J0243 06 05 35 27.6 240.2 3.4 39.0 -3 1938 No stop 13 47 50 --- 06 08 06 27.2 240.8 3.4 39.3 147 1977 13 45 21 13 47 50 NGC1068 06 08 06 27.2 241.0 3.4 39.4 -3 1977 No stop 13 52 20 --- 06 12 36 26.5 242.0 3.5 39.8 267 2046 13 47 51 13 53 20 J0239-0234 06 13 36 23.9 241.0 3.5 39.4 52 2046 13 53 20 13 55 20 =0237-027 06 15 37 23.6 241.4 3.6 39.6 120 2077 13 53 21 13 56 20 NGC1068 06 16 37 25.8 242.8 3.5 40.2 52 2077 13 56 20 14 00 20 --- 06 20 38 25.2 243.7 3.6 40.6 240 2138 13 56 21 14 00 20 R11-J0243 06 20 38 25.2 243.5 3.6 40.5 -3 2138 No stop 14 02 50 --- 06 23 08 24.8 244.0 3.6 40.7 147 2177 14 00 21 Schedule for URUMQI (Code Ur ) Page 5 Imaging the jet in NGC 1068 at 5 GHz 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- 14 02 50 NGC1068 06 23 08 24.8 244.2 3.7 40.8 -3 2177 No stop 14 07 20 --- 06 27 39 24.1 245.1 3.7 41.2 267 2246 14 02 51 14 07 20 R11-J0243 06 27 39 24.0 244.9 3.7 41.1 -3 2246 No stop 14 09 50 --- 06 30 09 23.6 245.4 3.8 41.3 147 2285 14 07 21 14 10 20 NGC1068 06 30 39 23.6 245.7 3.8 41.4 27 2285 14 10 20 14 14 20 --- 06 34 40 22.9 246.6 3.8 41.7 240 2346 14 10 21 14 14 20 R11-J0243 06 34 40 22.9 246.4 3.8 41.7 -3 2346 No stop 14 16 50 --- 06 37 10 22.4 246.9 3.9 41.9 147 2385 14 14 21 14 16 50 NGC1068 06 37 10 22.5 247.1 3.9 41.9 -3 2385 No stop 14 21 20 --- 06 41 41 21.7 248.0 4.0 42.3 267 2454 14 16 51 14 21 20 R11-J0243 06 41 41 21.7 247.8 4.0 42.2 -3 2454 No stop 14 23 50 --- 06 44 12 21.3 248.3 4.0 42.4 147 2492 14 21 21 14 23 50 NGC1068 06 44 12 21.3 248.5 4.0 42.5 -3 2492 No stop 14 28 20 --- 06 48 42 20.5 249.3 4.1 42.8 267 2562 14 23 51 14 29 20 J0239-0234 06 49 42 18.0 248.3 4.1 42.4 52 2562 14 29 20 14 31 20 =0237-027 06 51 43 17.6 248.7 4.2 42.6 120 2592 14 29 21 14 32 20 NGC1068 06 52 43 19.8 250.1 4.1 43.0 52 2592 14 32 20 14 36 20 --- 06 56 44 19.2 250.9 4.2 43.3 240 2654 14 32 21 14 36 20 R11-J0243 06 56 44 19.1 250.7 4.2 43.2 -3 2654 No stop 14 38 50 --- 06 59 14 18.7 251.2 4.2 43.4 147 2692 14 36 21 14 38 50 NGC1068 06 59 14 18.7 251.4 4.3 43.5 -3 2692 No stop 14 43 20 --- 07 03 45 18.0 252.2 4.3 43.7 267 2762 14 38 51 14 43 20 R11-J0243 07 03 45 17.9 252.1 4.3 43.7 -3 2762 No stop 14 45 50 --- 07 06 15 17.5 252.5 4.4 43.8 147 2800 14 43 21 14 46 20 NGC1068 07 06 45 17.4 252.8 4.4 43.9 27 2800 14 46 20 14 50 20 --- 07 10 46 16.7 253.6 4.4 44.1 240 2862 14 46 21 14 50 20 R11-J0243 07 10 46 16.7 253.4 4.4 44.1 -3 2862 No stop 14 52 50 --- 07 13 16 16.3 253.8 4.5 44.2 147 2900 14 50 21 14 52 50 NGC1068 07 13 16 16.3 254.0 4.5 44.2 -3 2900 No stop 14 57 20 --- 07 17 47 15.5 254.9 4.6 44.5 267 2969 14 52 51 Schedule for URUMQI (Code Ur ) Page 6 Imaging the jet in NGC 1068 at 5 GHz 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- 14 57 20 R11-J0243 07 17 47 15.5 254.7 4.6 44.4 -3 2969 No stop 14 59 50 --- 07 20 17 15.1 255.2 4.6 44.5 147 3008 14 57 21 14 59 50 NGC1068 07 20 17 15.1 255.3 4.6 44.6 -3 3008 No stop 15 04 20 --- 07 24 48 14.3 256.2 4.7 44.8 267 3077 14 59 51 15 05 20 J0239-0234 07 25 48 11.8 255.0 4.7 44.6 52 3077 15 05 20 15 07 20 =0237-027 07 27 49 11.4 255.4 4.8 44.7 120 3108 15 05 21 15 08 20 NGC1068 07 28 49 13.6 256.9 4.7 45.0 52 3108 15 08 20 15 12 20 --- 07 32 49 12.9 257.6 4.8 45.1 240 3169 15 08 21 15 12 20 R11-J0243 07 32 49 12.8 257.4 4.8 45.1 -3 3169 No stop 15 14 50 --- 07 35 20 12.4 257.9 4.8 45.2 147 3208 15 12 21 15 14 50 NGC1068 07 35 20 12.4 258.1 4.9 45.2 -3 3208 No stop 15 19 20 --- 07 39 51 11.6 258.9 4.9 45.4 267 3277 15 14 51 15 19 20 R11-J0243 07 39 51 11.6 258.7 4.9 45.4 -3 3277 No stop 15 21 50 --- 07 42 21 11.2 259.2 5.0 45.5 147 3315 15 19 21 15 22 20 NGC1068 07 42 51 11.1 259.4 5.0 45.5 27 3315 15 22 20 15 26 20 --- 07 46 52 10.4 260.1 5.0 45.6 240 3377 15 22 21 15 26 20 R11-J0243 07 46 52 10.3 260.0 5.0 45.6 -3 3377 No stop 15 28 50 --- 07 49 22 9.9 260.4 5.1 45.7 147 3415 15 26 21 15 28 50 NGC1068 07 49 22 9.9 260.6 5.1 45.7 -3 3415 No stop 15 33 20 --- 07 53 53 9.1 261.4 5.2 45.9 267 3485 15 28 51 15 33 20 R11-J0243 07 53 53 9.1 261.2 5.2 45.8 -3 3485 No stop 15 35 50 --- 07 56 23 8.6 261.6 5.2 45.9 147 3523 15 33 21 15 35 50 NGC1068 07 56 23 8.7 261.8 5.2 45.9 -3 3523 No stop 15 40 20 --- 08 00 54 7.8 262.6 5.3 46.0 267 3592 15 35 51 15 41 20 J0239-0234 08 01 54 5.4 261.5 5.3 45.9 52 3592 15 41 20 15 43 20 =0237-027 08 03 55 5.0 261.8 5.4 D 46.0 0 3623 15 41 21 15 44 20 NGC1068 08 04 55 7.1 263.3 5.4 46.1 52 3623 15 44 20 15 48 20 --- 08 08 55 6.4 264.0 5.4 46.2 240 3685 15 44 21 15 48 20 R11-J0243 08 08 55 6.4 263.8 5.4 46.2 -3 3685 No stop 15 50 50 --- 08 11 26 5.9 264.3 5.5 46.2 147 3723 15 48 21 Schedule for URUMQI (Code Ur ) Page 7 Imaging the jet in NGC 1068 at 5 GHz 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- 15 50 50 NGC1068 08 11 26 5.9 264.5 5.5 46.2 -3 3723 No stop 15 55 20 --- 08 15 57 5.1 265.2 5.5 46.3 267 3792 15 50 51 15 55 20 R11-J0243 08 15 57 5.1 265.1 5.5 46.3 -3 3792 No stop 15 57 50 --- 08 18 27 4.7 265.5 5.6 D 46.3 0 3831 15 55 21 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess124.C2048 --- 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: 10 Station: URUMQI Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 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 = A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 The following frequency sets based on these setups were used. Frequency Set: 7 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 210.49 210.49 210.49 210.49 274.49 274.49 274.49 274.49 338.49 338.49 338.49 338.49 402.49 402.49 402.49 402.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 7 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * NGC1068 02 40 07.048858 * 02 42 40.713100 02 43 54.185977 0.00 -00 13 31.41854 *-00 00 47.65400 00 05 15.79505 0.00 From catalog imbedded in main SCHED input file. * R11-J0243 02 40 36.044863 * 02 43 09.603500 02 44 23.028653 0.00 -00 21 51.80892 *-00 09 09.41100 -00 03 06.65234 0.00 From catalog imbedded in main SCHED input file. 0237-027 02 37 13.715986 * 02 39 45.472273 02 40 58.023105 0.01 * J0239-0234 -02 47 32.85455 *-02 34 40.91457 -02 28 34.31691 0.01 J0239-02 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 8842 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 NGC1068 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 5.367 591.969 R11-J0243 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 2.492 242.968 J0239-0234 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 0.517 57.683 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) NGC1068 60.2 R11-J0243 60.3 J0239-0234 59.1 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