COVER INFORMATION Station: ONSALA85 (Code O8 ) Experiment: SN2012AU Exp. Code: EL071A Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Lazda Address: University of Toronto 50 St. George Street Toronto Canada Phone: +15148092418 EMAIL: mattias.lazda@mail.utoronto.ca Fax: Phone during observation: Observing mode: vlbi Notes: # Please, make sure PHASE CAL is OFF # COVER LETTER: Schedule for ONSALA85 (Code O8 ) Page 2 SN2012AU 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 29 Feb 2024 Day 60 --- 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: 742.49 742.49 742.49 742.49 806.49 806.49 806.49 806.49 870.49 870.49 870.49 870.49 934.49 934.49 934.49 934.49 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 21 30 00 J1159+2914 08 54 26 47.2 111.0 -3.1 0.0 0 0 21 30 00 21 35 00 --- 08 59 26 47.8 112.3 -3.0 0.0 300 77 21 30 01 21 37 00 B0950+08 09 01 27 39.4 162.9 -0.9 0.0 2 77 21 37 00 21 42 20 --- 09 06 48 39.6 164.6 -0.8 0.0 320 160 21 37 01 21 59 20 SN2012AU 09 23 50 9.6 127.1 -3.5 0.0 858 160 21 59 20 22 02 50 --- 09 27 21 10.0 127.9 -3.5 0.0 210 214 21 59 21 22 08 10 J1305-1033 09 32 42 9.1 126.8 -3.6 0.0 302 214 22 08 10 22 10 10 --- 09 34 42 9.3 127.3 -3.5 0.0 120 245 22 08 11 22 10 10 SN2012AU 09 34 42 10.7 129.6 -3.4 0.0 -18 245 No stop 22 13 40 --- 09 38 13 11.1 130.4 -3.3 0.0 192 299 22 10 11 22 13 40 J1305-1033 09 38 13 9.7 128.1 -3.5 0.0 -18 299 No stop 22 16 00 --- 09 40 33 10.0 128.6 -3.4 0.0 122 335 22 13 41 22 16 00 SN2012AU 09 40 33 11.3 130.9 -3.3 0.0 -18 335 No stop 22 19 30 --- 09 44 04 11.7 131.7 -3.2 0.0 192 389 22 16 01 22 20 10 J1305-1033 09 44 44 10.4 129.5 -3.4 0.0 22 389 22 20 10 22 22 10 --- 09 46 44 10.6 130.0 -3.3 0.0 120 420 22 20 11 22 22 10 SN2012AU 09 46 44 12.0 132.3 -3.2 0.0 -18 420 No stop 22 25 40 --- 09 50 15 12.3 133.1 -3.1 0.0 192 474 22 22 11 22 25 40 J1305-1033 09 50 15 11.0 130.8 -3.3 0.0 -18 474 No stop 22 28 00 --- 09 52 35 11.2 131.3 -3.2 0.0 122 510 22 25 41 22 28 00 J1303-1051 09 52 35 11.2 132.0 -3.2 0.0 -11 510 No stop 22 30 30 --- 09 55 06 11.4 132.6 -3.2 0.0 139 549 22 28 01 22 31 00 J1305-1033 09 55 36 11.5 132.0 -3.2 0.0 19 549 22 31 00 22 33 00 --- 09 57 36 11.7 132.5 -3.2 0.0 120 580 22 31 01 22 33 00 SN2012AU 09 57 36 13.0 134.8 -3.0 0.0 -18 580 No stop 22 36 30 --- 10 01 07 13.4 135.6 -2.9 0.0 192 634 22 33 01 Schedule for ONSALA85 (Code O8 ) Page 3 SN2012AU 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 29 Feb 2024 Day 60 --- 22 36 30 J1305-1033 10 01 07 12.1 133.3 -3.1 0.0 -18 634 No stop 22 38 50 --- 10 03 27 12.3 133.8 -3.1 0.0 122 670 22 36 31 22 38 50 SN2012AU 10 03 27 13.6 136.2 -2.9 0.0 -18 670 No stop 22 42 20 --- 10 06 57 13.9 137.0 -2.8 0.0 192 724 22 38 51 22 43 00 J1305-1033 10 07 38 12.7 134.8 -3.0 0.0 22 724 22 43 00 22 45 00 --- 10 09 38 12.9 135.3 -3.0 0.0 120 755 22 43 01 22 45 00 SN2012AU 10 09 38 14.1 137.6 -2.8 0.0 -18 755 No stop 22 48 30 --- 10 13 08 14.5 138.5 -2.7 0.0 192 809 22 45 01 22 48 30 J1305-1033 10 13 08 13.2 136.1 -2.9 0.0 -18 809 No stop 22 50 50 --- 10 15 29 13.4 136.6 -2.9 0.0 122 845 22 48 31 22 50 50 J1303-1051 10 15 29 13.4 137.3 -2.8 0.0 -11 845 No stop 22 53 20 --- 10 17 59 13.6 137.9 -2.8 0.0 139 884 22 50 51 22 53 50 J1305-1033 10 18 29 13.7 137.3 -2.8 0.0 19 884 22 53 50 22 55 50 --- 10 20 30 13.9 137.8 -2.8 0.0 120 915 22 53 51 22 55 50 SN2012AU 10 20 30 15.1 140.2 -2.6 0.0 -18 915 No stop 22 59 20 --- 10 24 00 15.4 141.0 -2.5 0.0 192 969 22 55 51 22 59 20 J1305-1033 10 24 00 14.2 138.6 -2.7 0.0 -18 969 No stop 23 01 40 --- 10 26 21 14.4 139.2 -2.7 0.0 122 1005 22 59 21 23 01 40 SN2012AU 10 26 21 15.6 141.6 -2.5 0.0 -18 1005 No stop 23 05 10 --- 10 29 51 15.9 142.5 -2.4 0.0 192 1059 23 01 41 23 05 50 J1305-1033 10 30 31 14.8 140.2 -2.6 0.0 22 1059 23 05 50 23 07 50 --- 10 32 32 14.9 140.6 -2.6 0.0 120 1090 23 05 51 23 07 50 SN2012AU 10 32 32 16.1 143.1 -2.4 0.0 -18 1090 No stop 23 11 20 --- 10 36 02 16.4 143.9 -2.3 0.0 192 1144 23 07 51 23 11 20 J1305-1033 10 36 02 15.2 141.5 -2.5 0.0 -18 1144 No stop 23 13 40 --- 10 38 23 15.4 142.0 -2.5 0.0 122 1180 23 11 21 23 13 40 J1303-1051 10 38 23 15.3 142.7 -2.4 0.0 -11 1180 No stop 23 16 10 --- 10 40 53 15.5 143.3 -2.4 0.0 139 1219 23 13 41 23 16 40 J1305-1033 10 41 23 15.7 142.8 -2.4 0.0 19 1219 23 16 40 23 18 40 --- 10 43 23 15.8 143.2 -2.4 0.0 120 1250 23 16 41 Schedule for ONSALA85 (Code O8 ) Page 4 SN2012AU 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 29 Feb 2024 Day 60 --- 23 18 40 SN2012AU 10 43 23 17.0 145.7 -2.2 0.0 -18 1250 No stop 23 22 10 --- 10 46 54 17.2 146.6 -2.2 0.0 192 1304 23 18 41 23 22 10 J1305-1033 10 46 54 16.1 144.1 -2.3 0.0 -18 1304 No stop 23 24 30 --- 10 49 14 16.3 144.7 -2.3 0.0 122 1340 23 22 11 23 24 30 SN2012AU 10 49 14 17.4 147.2 -2.1 0.0 -18 1340 No stop 23 28 00 --- 10 52 45 17.7 148.0 -2.1 0.0 192 1394 23 24 31 23 28 40 J1305-1033 10 53 25 16.6 145.7 -2.2 0.0 22 1394 23 28 40 23 30 40 --- 10 55 25 16.8 146.2 -2.2 0.0 120 1425 23 28 41 23 30 40 SN2012AU 10 55 25 17.8 148.7 -2.0 0.0 -18 1425 No stop 23 34 10 --- 10 58 56 18.1 149.6 -2.0 0.0 192 1479 23 30 41 23 34 10 J1305-1033 10 58 56 17.0 147.0 -2.1 0.0 -18 1479 No stop 23 36 30 --- 11 01 16 17.2 147.6 -2.1 0.0 122 1515 23 34 11 23 36 30 J1303-1051 11 01 16 17.1 148.3 -2.1 0.0 -11 1515 No stop 23 39 00 --- 11 03 47 17.3 148.9 -2.0 0.0 139 1554 23 36 31 23 39 30 J1305-1033 11 04 17 17.4 148.3 -2.0 0.0 19 1554 23 39 30 23 41 30 --- 11 06 17 17.6 148.8 -2.0 0.0 120 1584 23 39 31 23 41 30 SN2012AU 11 06 17 18.6 151.4 -1.8 0.0 -18 1584 No stop 23 45 00 --- 11 09 48 18.8 152.3 -1.8 0.0 192 1639 23 41 31 23 45 00 J1305-1033 11 09 48 17.8 149.7 -2.0 0.0 -18 1639 No stop 23 47 20 --- 11 12 08 18.0 150.3 -1.9 0.0 122 1675 23 45 01 23 47 20 SN2012AU 11 12 08 18.9 152.9 -1.7 0.0 -18 1675 No stop 23 50 50 --- 11 15 39 19.2 153.8 -1.7 0.0 192 1729 23 47 21 23 51 30 J1305-1033 11 16 19 18.2 151.3 -1.8 0.0 22 1729 23 51 30 23 53 30 --- 11 18 19 18.4 151.8 -1.8 0.0 120 1760 23 51 31 23 53 30 SN2012AU 11 18 19 19.3 154.4 -1.6 0.0 -18 1760 No stop 23 57 00 --- 11 21 50 19.5 155.3 -1.6 0.0 192 1814 23 53 31 23 57 00 J1305-1033 11 21 50 18.6 152.7 -1.7 0.0 -18 1814 No stop 23 59 20 --- 11 24 10 18.7 153.3 -1.7 0.0 122 1850 23 57 01 Schedule for ONSALA85 (Code O8 ) Page 5 SN2012AU 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 ---------------------------------------------------------------------------------------- --- Start: Thu 29 Feb 2024 Day 60 -- Stop: Fri 1 Mar 2024 Day 61 --- 23 59 20 J1303-1051 11 24 10 18.6 154.0 -1.7 0.0 -11 1850 No stop 00 01 50 --- 11 26 41 18.7 154.6 -1.6 0.0 139 1888 23 59 21 00 02 20 J1305-1033 11 27 11 18.9 154.1 -1.7 0.0 19 1888 00 02 20 00 04 20 --- 11 29 11 19.0 154.6 -1.6 0.0 120 1919 00 02 21 00 04 20 SN2012AU 11 29 11 19.9 157.2 -1.4 0.0 -18 1919 No stop 00 07 50 --- 11 32 42 20.1 158.1 -1.4 0.0 192 1974 00 04 21 00 07 50 J1305-1033 11 32 42 19.2 155.4 -1.6 0.0 -18 1974 No stop 00 10 10 --- 11 35 02 19.4 156.0 -1.5 0.0 122 2010 00 07 51 00 10 10 SN2012AU 11 35 02 20.2 158.7 -1.4 0.0 -18 2010 No stop 00 13 40 --- 11 38 32 20.4 159.6 -1.3 0.0 192 2064 00 10 11 00 14 20 J1305-1033 11 39 13 19.6 157.1 -1.5 0.0 22 2064 00 14 20 00 16 20 --- 11 41 13 19.7 157.6 -1.4 0.0 120 2095 00 14 21 00 16 20 SN2012AU 11 41 13 20.5 160.3 -1.2 0.0 -18 2095 No stop 00 19 50 --- 11 44 43 20.7 161.2 -1.2 0.0 192 2149 00 16 21 00 19 50 J1305-1033 11 44 43 19.9 158.5 -1.4 0.0 -18 2149 No stop 00 22 10 --- 11 47 04 20.0 159.1 -1.3 0.0 122 2185 00 19 51 00 22 10 J1303-1051 11 47 04 19.8 159.8 -1.3 0.0 -11 2185 No stop 00 24 40 --- 11 49 34 19.9 160.4 -1.2 0.0 139 2223 00 22 11 00 25 10 J1305-1033 11 50 04 20.1 159.9 -1.3 0.0 19 2223 00 25 10 00 27 10 --- 11 52 05 20.2 160.4 -1.2 0.0 120 2254 00 25 11 00 27 10 SN2012AU 11 52 05 21.0 163.1 -1.1 0.0 -18 2254 No stop 00 30 40 --- 11 55 35 21.1 164.0 -1.0 0.0 192 2308 00 27 11 00 30 40 J1305-1033 11 55 35 20.4 161.3 -1.2 0.0 -18 2308 No stop 00 33 00 --- 11 57 56 20.5 161.9 -1.1 0.0 122 2345 00 30 41 00 33 00 SN2012AU 11 57 56 21.2 164.6 -1.0 0.0 -18 2345 No stop 00 36 30 --- 12 01 26 21.3 165.5 -0.9 0.0 192 2399 00 33 01 00 37 10 J1305-1033 12 02 06 20.6 163.0 -1.1 0.0 22 2399 00 37 10 00 39 10 --- 12 04 07 20.7 163.5 -1.0 0.0 120 2430 00 37 11 00 39 10 SN2012AU 12 04 07 21.4 166.2 -0.9 0.0 -18 2430 No stop 00 42 40 --- 12 07 37 21.5 167.2 -0.8 0.0 192 2484 00 39 11 Schedule for ONSALA85 (Code O8 ) Page 6 SN2012AU 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 1 Mar 2024 Day 61 --- 00 42 40 J1305-1033 12 07 37 20.8 164.4 -1.0 0.0 -18 2484 No stop 00 45 00 --- 12 09 58 20.9 165.0 -0.9 0.0 122 2520 00 42 41 00 45 00 J1303-1051 12 09 58 20.7 165.7 -0.9 0.0 -11 2520 No stop 00 47 30 --- 12 12 28 20.8 166.3 -0.9 0.0 139 2558 00 45 01 00 48 00 J1305-1033 12 12 58 21.0 165.8 -0.9 0.0 19 2558 00 48 00 00 50 00 --- 12 14 58 21.1 166.3 -0.9 0.0 120 2589 00 48 01 00 50 00 SN2012AU 12 14 58 21.7 169.1 -0.7 0.0 -18 2589 No stop 00 53 30 --- 12 18 29 21.8 170.0 -0.6 0.0 192 2643 00 50 01 00 53 30 J1305-1033 12 18 29 21.2 167.3 -0.8 0.0 -18 2643 No stop 00 55 50 --- 12 20 49 21.3 167.9 -0.8 0.0 122 2679 00 53 31 00 55 50 SN2012AU 12 20 49 21.8 170.6 -0.6 0.0 -18 2679 No stop 00 59 20 --- 12 24 20 21.9 171.6 -0.5 0.0 192 2734 00 55 51 01 00 00 J1305-1033 12 25 00 21.4 169.0 -0.7 0.0 22 2734 01 00 00 01 02 00 --- 12 27 00 21.4 169.5 -0.7 0.0 120 2764 01 00 01 01 02 00 SN2012AU 12 27 00 22.0 172.3 -0.5 0.0 -18 2764 No stop 01 05 30 --- 12 30 31 22.0 173.2 -0.4 0.0 192 2819 01 02 01 01 05 30 J1305-1033 12 30 31 21.5 170.4 -0.6 0.0 -18 2819 No stop 01 07 50 --- 12 32 51 21.6 171.0 -0.6 0.0 122 2855 01 05 31 01 07 50 J1303-1051 12 32 51 21.3 171.7 -0.5 0.0 -11 2855 No stop 01 10 20 --- 12 35 22 21.4 172.3 -0.5 0.0 139 2893 01 07 51 01 10 50 J1305-1033 12 35 52 21.6 171.8 -0.5 0.0 19 2893 01 10 50 01 12 50 --- 12 37 52 21.7 172.3 -0.5 0.0 120 2924 01 10 51 01 12 50 SN2012AU 12 37 52 22.1 175.1 -0.3 0.0 -18 2924 No stop 01 16 20 --- 12 41 23 22.2 176.1 -0.2 0.0 192 2978 01 12 51 01 16 20 J1305-1033 12 41 23 21.7 173.3 -0.4 0.0 -18 2978 No stop 01 18 40 --- 12 43 43 21.8 173.9 -0.4 0.0 122 3014 01 16 21 01 18 40 SN2012AU 12 43 43 22.2 176.7 -0.2 0.0 -18 3014 No stop 01 22 10 --- 12 47 14 22.2 177.6 -0.1 0.0 192 3068 01 18 41 01 22 50 J1305-1033 12 47 54 21.8 175.0 -0.3 0.0 22 3068 01 22 50 01 24 50 --- 12 49 54 21.8 175.5 -0.3 0.0 120 3099 01 22 51 Schedule for ONSALA85 (Code O8 ) Page 7 SN2012AU 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 1 Mar 2024 Day 61 --- 01 26 00 J1159+2914 12 51 04 60.4 202.6 0.8 0.0 -102 3099 01 26 00 01 30 00 --- 12 55 05 60.2 204.3 0.9 0.0 138 3161 01 26 01 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: 3 Station: ONSALA85 Total bit rate: 2048 Format: VDIF 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= 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 4088.00 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: 5 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= 742.49 742.49 742.49 742.49 806.49 806.49 806.49 806.49 870.49 870.49 870.49 870.49 934.49 934.49 934.49 934.49 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: 5 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) * SN2012AU 12 52 15.724408 * 12 54 52.250000 12 56 08.624129 0.00 -09 58 35.71619 *-10 14 50.63000 -10 22 46.80094 0.00 From catalog imbedded in main SCHED input file. * J1305-1033 13 02 55.848515 * 13 05 33.015000 13 06 49.665766 0.00 -10 17 16.37556 *-10 33 19.42800 -10 41 09.91301 0.00 From catalog imbedded in main SCHED input file. * J1303-1051 13 00 36.725007 * 13 03 13.867900 13 04 30.513645 0.00 -10 35 11.31897 *-10 51 17.12900 -10 59 08.85203 0.00 From catalog imbedded in main SCHED input file. * J1159+2914 11 56 57.786199 * 11 59 31.833900 12 00 47.544308 0.00 29 31 25.73890 * 29 14 43.82700 29 06 31.13229 0.00 From catalog imbedded in main SCHED input file. * B0950+08 09 50 30.550681 * 09 53 09.309700 09 54 27.002822 0.00 08 09 45.15217 * 07 55 35.75000 07 48 42.18788 0.00 From catalog imbedded in main SCHED input file. 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 SN2012AU sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 1.692 77.758 J1305-1033 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 1.406 64.145 J1303-1051 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 0.375 16.669 J1159+2914 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 0.150 8.072 B0950+08 sess124.C2048 1 2 3 4 5 7 8 9 10 11 0.089 4.611 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) SN2012AU 143.7 J1305-1033 141.3 J1303-1051 141.6 J1159+2914 152.6 B0950+08 166.4 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