COVER INFORMATION Station: ONSALA85 (Code O8 ) Experiment: Chasing the path of a precessing jet in a compact jetted radio galaxy Exp. Code: es110a Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Carlo Stanghellini Address: INAF-IRA via Gobetti 101 40129 Bologna Italy Phone: +39 051 6399392 EMAIL: carlo.stanghellini@inaf.it Fax: Phone during observation: +39 3473819403 Observing mode: Continuum Notes: **** Phase-cal off please **** v3: Sr as DBBCVER=HYBRID/astro2 Schedule for ONSALA85 (Code O8 ) Page 2 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 25 Feb 2024 Day 56 --- 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 18 30 00 4C39.25 05 38 10 48.9 91.1 -3.8 0.0 0 0 18 30 00 18 33 00 --- 05 41 10 49.3 91.7 -3.8 0.0 180 46 18 30 01 18 45 36 0941-080 05 53 48 9.3 122.0 -3.9 0.0 553 46 18 45 36 18 55 36 --- 06 03 50 10.4 124.3 -3.7 0.0 600 201 18 45 37 18 56 00 J0942-0759 06 04 14 10.9 124.5 -3.7 0.0 14 201 18 56 00 18 58 00 =0939-077 06 06 15 11.1 125.0 -3.6 0.0 120 232 18 56 01 18 58 24 0941-080 06 06 39 10.7 124.9 -3.6 0.0 14 232 18 58 24 19 08 24 --- 06 16 41 11.8 127.2 -3.5 0.0 600 386 18 58 25 19 08 49 J0942-0759 06 17 05 12.3 127.4 -3.4 0.0 14 386 19 08 49 19 10 49 =0939-077 06 19 05 12.5 127.9 -3.4 0.0 120 417 19 08 50 19 11 13 0941-080 06 19 30 12.1 127.8 -3.4 0.0 14 417 19 11 13 19 21 13 --- 06 29 31 13.1 130.1 -3.3 0.0 600 572 19 11 14 19 21 37 J0942-0759 06 29 56 13.6 130.4 -3.2 0.0 14 572 19 21 37 19 23 37 =0939-077 06 31 56 13.8 130.8 -3.2 0.0 120 603 19 21 38 19 24 02 0941-080 06 32 20 13.4 130.8 -3.2 0.0 14 603 19 24 02 19 34 02 --- 06 42 22 14.4 133.1 -3.0 0.0 600 757 19 24 03 19 34 28 J0942-0759 06 42 48 14.9 133.4 -3.0 0.0 16 757 19 34 28 19 36 28 =0939-077 06 44 49 15.1 133.9 -3.0 0.0 120 788 19 34 29 19 36 53 0941-080 06 45 14 14.7 133.8 -3.0 0.0 16 788 19 36 53 19 46 53 --- 06 55 16 15.7 136.2 -2.8 0.0 600 943 19 36 54 19 47 20 J0942-0759 06 55 42 16.1 136.4 -2.8 0.0 16 943 19 47 20 19 49 20 =0939-077 06 57 42 16.3 136.9 -2.8 0.0 120 974 19 47 21 19 49 45 0941-080 06 58 08 15.9 136.8 -2.8 0.0 16 974 19 49 45 19 59 45 --- 07 08 10 16.8 139.3 -2.6 0.0 600 1128 19 49 46 20 00 11 J0942-0759 07 08 36 17.3 139.5 -2.6 0.0 16 1128 20 00 11 20 02 11 =0939-077 07 10 36 17.5 140.0 -2.5 0.0 120 1159 20 00 12 Schedule for ONSALA85 (Code O8 ) Page 3 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 25 Feb 2024 Day 56 --- 20 02 37 0941-080 07 11 02 17.1 139.9 -2.6 0.0 16 1159 20 02 37 20 12 37 --- 07 21 04 17.9 142.4 -2.4 0.0 600 1314 20 02 38 20 13 03 J0942-0759 07 21 30 18.4 142.7 -2.4 0.0 16 1314 20 13 03 20 15 03 =0939-077 07 23 30 18.5 143.2 -2.3 0.0 120 1345 20 13 04 20 15 28 0941-080 07 23 56 18.2 143.1 -2.3 0.0 16 1345 20 15 28 20 25 28 --- 07 33 57 19.0 145.6 -2.2 0.0 600 1499 20 15 29 20 30 53 4C39.25 07 39 23 64.4 124.3 -1.8 0.0 122 1499 20 30 53 20 33 53 --- 07 42 23 64.7 125.4 -1.8 0.0 180 1546 20 30 54 20 39 16 J1058+0133 07 47 47 22.4 126.5 -3.2 0.0 160 1546 20 39 16 20 42 16 =1055+018 07 50 48 22.8 127.3 -3.1 0.0 180 1592 20 39 17 20 44 03 J0942-0759 07 52 35 20.7 150.5 -1.8 0.0 32 1592 20 44 03 20 46 03 =0939-077 07 54 35 20.8 151.0 -1.8 0.0 120 1623 20 44 04 20 46 28 0941-080 07 55 01 20.5 150.9 -1.8 0.0 15 1623 20 46 28 20 56 28 --- 08 05 02 21.1 153.4 -1.7 0.0 600 1778 20 46 29 20 56 54 J0942-0759 08 05 28 21.5 153.8 -1.6 0.0 16 1778 20 56 54 20 58 54 =0939-077 08 07 28 21.6 154.3 -1.6 0.0 120 1809 20 56 55 20 59 20 0941-080 08 07 54 21.3 154.2 -1.6 0.0 15 1809 20 59 20 21 09 20 --- 08 17 56 21.8 156.8 -1.4 0.0 600 1963 20 59 21 21 09 45 J0942-0759 08 18 21 22.2 157.1 -1.4 0.0 16 1963 21 09 45 21 11 45 =0939-077 08 20 22 22.3 157.7 -1.4 0.0 120 1994 21 09 46 21 12 11 0941-080 08 20 47 22.0 157.5 -1.4 0.0 15 1994 21 12 11 21 22 11 --- 08 30 49 22.5 160.1 -1.2 0.0 600 2149 21 12 12 21 22 36 J0942-0759 08 31 14 22.8 160.5 -1.2 0.0 16 2149 21 22 36 21 24 36 =0939-077 08 33 15 22.9 161.1 -1.2 0.0 120 2180 21 22 37 21 25 02 0941-080 08 33 40 22.6 160.9 -1.2 0.0 15 2180 21 25 02 21 35 02 --- 08 43 42 23.0 163.5 -1.0 0.0 600 2334 21 25 03 21 35 27 J0942-0759 08 44 07 23.4 163.9 -1.0 0.0 15 2334 21 35 27 21 37 27 =0939-077 08 46 08 23.5 164.5 -1.0 0.0 120 2365 21 35 28 21 37 52 0941-080 08 46 33 23.1 164.3 -1.0 0.0 15 2365 21 37 52 21 47 52 --- 08 56 35 23.4 167.0 -0.8 0.0 600 2520 21 37 53 Schedule for ONSALA85 (Code O8 ) Page 4 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 25 Feb 2024 Day 56 --- 21 48 18 J0942-0759 08 57 00 23.8 167.4 -0.8 0.0 15 2520 21 48 18 21 50 18 =0939-077 08 59 00 23.9 167.9 -0.7 0.0 120 2551 21 48 19 21 50 43 0941-080 08 59 26 23.5 167.7 -0.8 0.0 15 2551 21 50 43 22 00 43 --- 09 09 27 23.8 170.4 -0.6 0.0 600 2705 21 50 44 22 01 08 J0942-0759 09 09 52 24.1 170.9 -0.6 0.0 15 2705 22 01 08 22 03 08 =0939-077 09 11 53 24.2 171.4 -0.5 0.0 120 2736 22 01 09 22 03 33 0941-080 09 12 18 23.8 171.2 -0.5 0.0 15 2736 22 03 33 22 13 33 --- 09 22 20 24.0 173.9 -0.4 0.0 600 2891 22 03 34 22 13 58 J0942-0759 09 22 45 24.4 174.3 -0.3 0.0 15 2891 22 13 58 22 15 58 =0939-077 09 24 45 24.4 174.9 -0.3 0.0 120 2922 22 13 59 22 16 23 0941-080 09 25 10 24.0 174.7 -0.3 0.0 15 2922 22 16 23 22 26 23 --- 09 35 12 24.1 177.4 -0.2 0.0 600 3076 22 16 24 22 26 48 J0942-0759 09 35 37 24.5 177.8 -0.1 0.0 15 3076 22 26 48 22 28 48 =0939-077 09 37 37 24.5 178.4 -0.1 0.0 120 3107 22 26 49 22 30 38 J1058+0133 09 39 27 31.8 156.2 -1.3 0.0 37 3107 22 30 38 22 33 38 =1055+018 09 42 28 32.0 157.1 -1.3 0.0 180 3153 22 30 39 22 35 32 J0942-0759 09 44 22 24.5 180.2 0.0 0.0 39 3153 22 35 32 22 37 32 =0939-077 09 46 22 24.5 180.8 0.0 0.0 120 3184 22 35 33 22 37 56 0941-080 09 46 46 24.2 180.5 0.0 0.0 14 3184 22 37 56 22 47 56 --- 09 56 48 24.1 183.2 0.2 0.0 600 3339 22 37 57 22 48 20 J0942-0759 09 57 12 24.4 183.7 0.2 0.0 14 3339 22 48 20 22 50 20 =0939-077 09 59 13 24.4 184.3 0.3 0.0 120 3370 22 48 21 22 50 45 0941-080 09 59 37 24.1 184.0 0.2 0.0 14 3370 22 50 45 23 00 45 --- 10 09 39 24.0 186.7 0.4 0.0 600 3524 22 50 46 23 01 10 J0942-0759 10 10 04 24.3 187.2 0.4 0.0 16 3524 23 01 10 23 03 10 =0939-077 10 12 05 24.2 187.7 0.5 0.0 120 3555 23 01 11 23 03 35 0941-080 10 12 29 23.9 187.5 0.5 0.0 15 3555 23 03 35 23 13 35 --- 10 22 31 23.7 190.2 0.6 0.0 600 3710 23 03 36 23 14 00 J0942-0759 10 22 57 24.0 190.7 0.7 0.0 16 3710 23 14 00 23 16 00 =0939-077 10 24 57 24.0 191.2 0.7 0.0 120 3741 23 14 01 Schedule for ONSALA85 (Code O8 ) Page 5 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 25 Feb 2024 Day 56 --- 23 16 25 0941-080 10 25 22 23.6 191.0 0.7 0.0 15 3741 23 16 25 23 26 25 --- 10 35 24 23.4 193.6 0.8 0.0 600 3895 23 16 26 23 26 51 J0942-0759 10 35 50 23.6 194.1 0.9 0.0 16 3895 23 26 51 23 28 51 =0939-077 10 37 50 23.6 194.7 0.9 0.0 120 3926 23 26 52 23 29 16 0941-080 10 38 15 23.3 194.4 0.9 0.0 15 3926 23 29 16 23 39 16 --- 10 48 17 22.9 197.1 1.1 0.0 600 4081 23 29 17 23 39 42 J0942-0759 10 48 43 23.2 197.6 1.1 0.0 16 4081 23 39 42 23 41 42 =0939-077 10 50 43 23.1 198.1 1.1 0.0 120 4112 23 39 43 23 42 07 0941-080 10 51 08 22.8 197.8 1.1 0.0 15 4112 23 42 07 23 52 07 --- 11 01 10 22.3 200.5 1.3 0.0 600 4266 23 42 08 23 52 33 J0942-0759 11 01 36 22.6 201.0 1.3 0.0 16 4266 23 52 33 23 54 33 =0939-077 11 03 36 22.5 201.5 1.3 0.0 120 4297 23 52 34 --- Start: Sun 25 Feb 2024 Day 56 -- Stop: Mon 26 Feb 2024 Day 57 --- 23 54 58 0941-080 11 04 02 22.2 201.2 1.3 0.0 15 4297 23 54 58 00 04 58 --- 11 14 03 21.7 203.8 1.5 0.0 600 4452 23 54 59 00 05 25 J0942-0759 11 14 30 21.9 204.4 1.5 0.0 16 4452 00 05 25 00 07 25 =0939-077 11 16 30 21.8 204.9 1.5 0.0 120 4483 00 05 26 00 07 50 0941-080 11 16 55 21.5 204.6 1.5 0.0 15 4483 00 07 50 00 17 50 --- 11 26 57 20.9 207.2 1.7 0.0 600 4637 00 07 51 00 18 16 J0942-0759 11 27 23 21.2 207.7 1.7 0.0 16 4637 00 18 16 00 20 16 =0939-077 11 29 24 21.0 208.2 1.8 0.0 120 4668 00 18 17 00 20 42 0941-080 11 29 49 20.8 207.9 1.7 0.0 15 4668 00 20 42 00 30 42 --- 11 39 51 20.1 210.4 1.9 0.0 600 4823 00 20 43 00 31 08 J0942-0759 11 40 17 20.3 211.0 1.9 0.0 16 4823 00 31 08 00 33 08 =0939-077 11 42 17 20.2 211.5 2.0 0.0 120 4854 00 31 09 00 33 33 0941-080 11 42 43 19.9 211.2 2.0 0.0 15 4854 00 33 33 00 43 33 --- 11 52 45 19.2 213.7 2.1 0.0 600 5008 00 33 34 00 44 00 J0942-0759 11 53 11 19.4 214.2 2.2 0.0 16 5008 00 44 00 00 46 00 =0939-077 11 55 11 19.2 214.7 2.2 0.0 120 5039 00 44 01 Schedule for ONSALA85 (Code O8 ) Page 6 Chasing the path of a precessing jet in a compact jetted radio galaxy 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 26 Feb 2024 Day 57 --- 00 46 25 0941-080 11 55 37 19.0 214.4 2.2 0.0 15 5039 00 46 25 00 56 25 --- 12 05 39 18.2 216.9 2.3 0.0 600 5194 00 46 26 00 56 52 J0942-0759 12 06 05 18.3 217.4 2.4 0.0 16 5194 00 56 52 00 58 52 =0939-077 12 08 06 18.2 217.9 2.4 0.0 120 5225 00 56 53 00 59 17 0941-080 12 08 31 17.9 217.6 2.4 0.0 16 5225 00 59 17 01 09 17 --- 12 18 33 17.1 220.0 2.6 0.0 600 5379 00 59 18 01 09 44 J0942-0759 12 18 59 17.3 220.6 2.6 0.0 16 5379 01 09 44 01 11 44 =0939-077 12 21 00 17.1 221.1 2.6 0.0 120 5410 01 09 45 01 12 10 0941-080 12 21 25 16.8 220.7 2.6 0.0 16 5410 01 12 10 01 22 10 --- 12 31 27 15.9 223.1 2.8 0.0 600 5565 01 12 11 01 22 36 J0942-0759 12 31 54 16.1 223.7 2.8 0.0 16 5565 01 22 36 01 24 36 =0939-077 12 33 54 15.9 224.1 2.8 0.0 120 5596 01 22 37 01 25 02 0941-080 12 34 20 15.7 223.8 2.8 0.0 16 5596 01 25 02 01 35 02 --- 12 44 21 14.7 226.2 3.0 0.0 600 5750 01 25 03 01 35 28 J0942-0759 12 44 48 14.9 226.7 3.0 0.0 16 5750 01 35 28 01 37 28 =0939-077 12 46 48 14.7 227.2 3.1 0.0 120 5781 01 35 29 01 37 54 0941-080 12 47 14 14.4 226.9 3.0 0.0 16 5781 01 37 54 01 47 54 --- 12 57 15 13.4 229.2 3.2 0.0 600 5936 01 37 55 01 48 20 J0942-0759 12 57 42 13.6 229.7 3.2 0.0 16 5936 01 48 20 01 50 20 =0939-077 12 59 42 13.4 230.2 3.3 0.0 120 5967 01 48 21 01 50 46 0941-080 13 00 08 13.1 229.9 3.3 0.0 16 5967 01 50 46 02 00 46 --- 13 10 10 12.1 232.2 3.4 0.0 600 6121 01 50 47 02 01 12 J0942-0759 13 10 36 12.2 232.7 3.5 0.0 16 6121 02 01 12 02 03 12 =0939-077 13 12 37 12.0 233.2 3.5 0.0 120 6152 02 01 13 02 03 38 0941-080 13 13 02 11.8 232.8 3.5 0.0 16 6152 02 03 38 02 13 38 --- 13 23 04 10.7 235.1 3.6 0.0 600 6307 02 03 39 02 14 04 J0942-0759 13 23 30 10.8 235.6 3.7 0.0 16 6307 02 14 04 02 16 04 =0939-077 13 25 31 10.6 236.1 3.7 0.0 120 6338 02 14 05 02 16 04 3C286 13 25 31 63.0 176.8 -0.1 0.0 -201 6338 No stop 02 30 00 --- 13 39 29 63.0 183.4 0.1 0.0 635 6553 02 16 05 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) * 4C39.25 09 23 55.319216 * 09 27 03.013937 09 28 35.082750 0.31 J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 03.24895 0.16 0923+392 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0927+39 GSFC 2016a X/S astro solution, 250526 observations. 0939-077 09 39 52.981827 * 09 42 21.461395 09 43 34.130774 0.08 * J0942-0759 -07 46 09.50325 *-07 59 53.20399 -08 06 34.57729 0.18 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 150 observations. * 0941-080 09 41 08.642474 * 09 43 36.944446 09 44 49.528582 0.54 J0943-0819 -08 05 43.99166 *-08 19 30.81834 -08 26 13.71118 0.80 J0943-08 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 49 observations. 1055+018 10 55 55.313730 * 10 58 29.605208 10 59 45.121830 0.01 * J1058+0133 01 50 03.53722 * 01 33 58.82372 01 26 08.12607 0.01 J1058+01 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 8263 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 16.249192 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 22 51.20946 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 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 4C39.25 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 0.100 13.600 J0942-0759 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 1.167 121.329 0941-080 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 5.500 567.829 J1058+0133 sess124.C2048 1 2 3 4 5 6 7 8 9 10 11 13 0.100 12.799 3C286 sess124.C2048 1 2 3 4 5 8 9 10 11 13 0.232 17.402 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) 4C39.25 146.7 J0942-0759 158.7 0941-080 158.7 J1058+0133 170.1 3C286 133.4 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