COVER INFORMATION Station: YEBES40M (Code Ys ) 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 YEBES40M (Code Ys ) 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: 672.49 672.49 672.49 672.49 736.49 736.49 736.49 736.49 800.49 800.49 800.49 800.49 864.49 864.49 864.49 864.49 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 04 38 09 35.8 66.3 -4.8 -63.4 0 0 18 30 00 18 33 00 --- 04 41 09 36.3 66.6 -4.8 -63.7 180 46 18 30 01 18 56 00 J0942-0759 05 04 13 9.7 109.5 -4.7 -46.4 1326 46 18 56 00 18 58 00 =0939-077 05 06 13 10.0 109.8 -4.6 -46.2 120 77 18 56 01 18 58 24 0941-080 05 06 38 9.6 109.9 -4.6 -46.3 9 77 18 58 24 19 08 24 --- 05 16 39 11.4 111.7 -4.5 -45.6 600 232 18 58 25 19 08 49 J0942-0759 05 17 04 11.9 111.7 -4.4 -45.5 9 232 19 08 49 19 10 49 =0939-077 05 19 04 12.3 112.1 -4.4 -45.3 120 263 19 08 50 19 11 13 0941-080 05 19 29 11.9 112.2 -4.4 -45.4 9 263 19 11 13 19 21 13 --- 05 29 30 13.7 114.0 -4.3 -44.6 600 417 19 11 14 19 21 37 J0942-0759 05 29 55 14.2 114.1 -4.2 -44.5 9 417 19 21 37 19 23 37 =0939-077 05 31 55 14.5 114.4 -4.2 -44.4 120 448 19 21 38 19 24 02 0941-080 05 32 19 14.2 114.5 -4.2 -44.4 9 448 19 24 02 19 34 02 --- 05 42 21 15.9 116.3 -4.0 -43.5 600 603 19 24 03 19 34 28 J0942-0759 05 42 47 16.4 116.4 -4.0 -43.4 11 603 19 34 28 19 36 28 =0939-077 05 44 47 16.7 116.8 -4.0 -43.3 120 634 19 34 29 19 36 53 0941-080 05 45 13 16.4 116.9 -4.0 -43.3 10 634 19 36 53 19 46 53 --- 05 55 15 18.0 118.8 -3.8 -42.3 600 788 19 36 54 19 47 20 J0942-0759 05 55 41 18.6 118.9 -3.8 -42.2 11 788 19 47 20 19 49 20 =0939-077 05 57 41 18.9 119.3 -3.8 -42.0 120 819 19 47 21 19 49 45 0941-080 05 58 07 18.5 119.3 -3.8 -42.1 10 819 19 49 45 19 59 45 --- 06 08 09 20.2 121.3 -3.6 -41.0 600 974 19 49 46 20 00 11 J0942-0759 06 08 35 20.7 121.4 -3.6 -40.9 11 974 20 00 11 20 02 11 =0939-077 06 10 35 21.0 121.8 -3.5 -40.7 120 1005 20 00 12 20 02 37 0941-080 06 11 01 20.6 121.9 -3.6 -40.7 10 1005 20 02 37 20 12 37 --- 06 21 02 22.2 123.9 -3.4 -39.6 600 1159 20 02 38 Schedule for YEBES40M (Code Ys ) 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 13 03 J0942-0759 06 21 28 22.8 124.0 -3.4 -39.5 11 1159 20 13 03 20 15 03 =0939-077 06 23 29 23.1 124.5 -3.3 -39.3 120 1190 20 13 04 20 15 28 0941-080 06 23 54 22.7 124.5 -3.3 -39.3 10 1190 20 15 28 20 25 28 --- 06 33 56 24.2 126.6 -3.2 -38.1 600 1345 20 15 29 20 30 53 4C39.25 06 39 22 57.7 78.8 -2.8 -73.4 262 1345 20 30 53 20 33 53 --- 06 42 22 58.3 79.1 -2.8 -73.6 180 1391 20 30 54 20 39 16 J1058+0133 06 47 46 21.2 107.2 -4.2 -46.6 270 1391 20 39 16 20 42 16 =1055+018 06 50 47 21.7 107.8 -4.1 -46.4 180 1438 20 39 17 20 44 03 J0942-0759 06 52 34 27.4 130.8 -2.9 -35.6 69 1438 20 44 03 20 46 03 =0939-077 06 54 34 27.7 131.2 -2.8 -35.3 120 1469 20 44 04 20 46 28 0941-080 06 54 59 27.3 131.3 -2.8 -35.3 10 1469 20 46 28 20 56 28 --- 07 05 01 28.8 133.6 -2.7 -33.8 600 1623 20 46 29 20 56 54 J0942-0759 07 05 27 29.3 133.8 -2.6 -33.7 10 1623 20 56 54 20 58 54 =0939-077 07 07 27 29.5 134.2 -2.6 -33.4 120 1654 20 56 55 20 59 20 0941-080 07 07 53 29.1 134.2 -2.6 -33.4 10 1654 20 59 20 21 09 20 --- 07 17 54 30.5 136.7 -2.4 -31.8 600 1809 20 59 21 21 09 45 J0942-0759 07 18 20 31.0 136.9 -2.4 -31.7 10 1809 21 09 45 21 11 45 =0939-077 07 20 21 31.2 137.4 -2.4 -31.3 120 1840 21 09 46 21 12 11 0941-080 07 20 46 30.9 137.4 -2.4 -31.4 10 1840 21 12 11 21 22 11 --- 07 30 48 32.1 139.9 -2.2 -29.7 600 1994 21 12 12 21 22 36 J0942-0759 07 31 13 32.6 140.1 -2.2 -29.5 10 1994 21 22 36 21 24 36 =0939-077 07 33 14 32.8 140.6 -2.2 -29.2 120 2025 21 22 37 21 25 02 0941-080 07 33 39 32.5 140.6 -2.2 -29.2 10 2025 21 25 02 21 35 02 --- 07 43 41 33.6 143.2 -2.0 -27.4 600 2180 21 25 03 21 35 27 J0942-0759 07 44 06 34.1 143.5 -2.0 -27.2 10 2180 21 35 27 21 37 27 =0939-077 07 46 07 34.3 144.0 -2.0 -26.8 120 2211 21 35 28 21 37 52 0941-080 07 46 32 34.0 143.9 -2.0 -26.9 10 2211 21 37 52 21 47 52 --- 07 56 33 35.0 146.6 -1.8 -25.0 600 2365 21 37 53 21 48 18 J0942-0759 07 56 59 35.5 146.9 -1.8 -24.8 10 2365 21 48 18 21 50 18 =0939-077 07 58 59 35.7 147.5 -1.7 -24.4 120 2396 21 48 19 Schedule for YEBES40M (Code Ys ) 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 50 43 0941-080 07 59 24 35.3 147.4 -1.8 -24.4 10 2396 21 50 43 22 00 43 --- 08 09 26 36.3 150.2 -1.6 -22.4 600 2551 21 50 44 22 01 08 J0942-0759 08 09 51 36.8 150.6 -1.6 -22.2 10 2551 22 01 08 22 03 08 =0939-077 08 11 52 37.0 151.1 -1.5 -21.8 120 2582 22 01 09 22 03 33 0941-080 08 12 17 36.6 151.0 -1.5 -21.8 10 2582 22 03 33 22 13 33 --- 08 22 18 37.5 154.0 -1.4 -19.7 600 2736 22 03 34 22 13 58 J0942-0759 08 22 44 37.9 154.3 -1.3 -19.4 10 2736 22 13 58 22 15 58 =0939-077 08 24 44 38.1 154.9 -1.3 -19.0 120 2767 22 13 59 22 16 23 0941-080 08 25 09 37.7 154.8 -1.3 -19.1 10 2767 22 16 23 22 26 23 --- 08 35 11 38.5 157.8 -1.2 -16.9 600 2922 22 16 24 22 26 48 J0942-0759 08 35 36 38.9 158.2 -1.1 -16.6 10 2922 22 26 48 22 28 48 =0939-077 08 37 36 39.0 158.8 -1.1 -16.1 120 2953 22 26 49 22 30 38 J1058+0133 08 39 26 39.7 131.7 -2.3 -34.6 67 2953 22 30 38 22 33 38 =1055+018 08 42 27 40.1 132.5 -2.3 -34.1 180 2999 22 30 39 22 35 32 J0942-0759 08 44 21 39.5 160.9 -1.0 -14.6 71 2999 22 35 32 22 37 32 =0939-077 08 46 21 39.6 161.5 -1.0 -14.1 120 3030 22 35 33 22 37 56 0941-080 08 46 45 39.2 161.3 -1.0 -14.2 9 3030 22 37 56 22 47 56 --- 08 56 47 39.8 164.5 -0.8 -11.9 600 3184 22 37 57 22 48 20 J0942-0759 08 57 11 40.2 164.9 -0.8 -11.5 9 3184 22 48 20 22 50 20 =0939-077 08 59 12 40.3 165.5 -0.7 -11.1 120 3215 22 48 21 22 50 45 0941-080 08 59 36 39.9 165.3 -0.8 -11.2 9 3215 22 50 45 23 00 45 --- 09 09 38 40.4 168.5 -0.6 -8.8 600 3370 22 50 46 23 01 10 J0942-0759 09 10 03 40.8 169.0 -0.6 -8.4 10 3370 23 01 10 23 03 10 =0939-077 09 12 04 40.8 169.7 -0.5 -7.9 120 3401 23 01 11 23 03 35 0941-080 09 12 28 40.5 169.5 -0.5 -8.1 9 3401 23 03 35 23 13 35 --- 09 22 30 40.8 172.7 -0.4 -5.6 600 3555 23 03 36 23 14 00 J0942-0759 09 22 56 41.1 173.2 -0.3 -5.2 10 3555 23 14 00 23 16 00 =0939-077 09 24 56 41.2 173.9 -0.3 -4.7 120 3586 23 14 01 23 16 25 0941-080 09 25 21 40.8 173.6 -0.3 -4.9 9 3586 23 16 25 23 26 25 --- 09 35 23 41.0 176.9 -0.2 -2.4 600 3741 23 16 26 Schedule for YEBES40M (Code Ys ) 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 26 51 J0942-0759 09 35 49 41.3 177.4 -0.1 -2.0 11 3741 23 26 51 23 28 51 =0939-077 09 37 49 41.3 178.1 -0.1 -1.5 120 3772 23 26 52 23 29 16 0941-080 09 38 14 41.0 177.8 -0.1 -1.7 9 3772 23 29 16 23 39 16 --- 09 48 15 41.0 181.1 0.1 0.9 600 3926 23 29 17 23 39 42 J0942-0759 09 48 42 41.4 181.7 0.1 1.3 11 3926 23 39 42 23 41 42 =0939-077 09 50 42 41.3 182.4 0.1 1.8 120 3957 23 39 43 23 42 07 0941-080 09 51 07 41.0 182.1 0.1 1.6 10 3957 23 42 07 23 52 07 --- 10 01 09 40.9 185.3 0.3 4.1 600 4112 23 42 08 23 52 33 J0942-0759 10 01 35 41.2 185.9 0.3 4.5 11 4112 23 52 33 23 54 33 =0939-077 10 03 35 41.1 186.6 0.3 5.1 120 4143 23 52 34 --- Start: Sun 25 Feb 2024 Day 56 -- Stop: Mon 26 Feb 2024 Day 57 --- 23 54 58 0941-080 10 04 00 40.8 186.3 0.3 4.8 10 4143 23 54 58 00 04 58 --- 10 14 02 40.6 189.5 0.5 7.3 600 4297 23 54 59 00 05 25 J0942-0759 10 14 28 40.8 190.1 0.5 7.8 11 4297 00 05 25 00 07 25 =0939-077 10 16 29 40.8 190.8 0.5 8.3 120 4328 00 05 26 00 07 50 0941-080 10 16 54 40.5 190.5 0.5 8.0 10 4328 00 07 50 00 17 50 --- 10 26 56 40.1 193.7 0.7 10.5 600 4483 00 07 51 00 18 16 J0942-0759 10 27 22 40.3 194.3 0.7 10.9 11 4483 00 18 16 00 20 16 =0939-077 10 29 23 40.2 194.9 0.8 11.4 120 4514 00 18 17 00 20 42 0941-080 10 29 48 40.0 194.6 0.7 11.1 10 4514 00 20 42 00 30 42 --- 10 39 50 39.4 197.7 0.9 13.5 600 4668 00 20 43 00 31 08 J0942-0759 10 40 16 39.6 198.3 0.9 14.0 11 4668 00 31 08 00 33 08 =0939-077 10 42 16 39.5 199.0 1.0 14.5 120 4699 00 31 09 00 33 33 0941-080 10 42 42 39.3 198.6 1.0 14.2 10 4699 00 33 33 00 43 33 --- 10 52 44 38.6 201.7 1.1 16.5 600 4854 00 33 34 00 44 00 J0942-0759 10 53 10 38.8 202.3 1.2 17.0 11 4854 00 44 00 00 46 00 =0939-077 10 55 10 38.6 202.9 1.2 17.4 120 4885 00 44 01 00 46 25 0941-080 10 55 36 38.4 202.6 1.2 17.1 10 4885 00 46 25 00 56 25 --- 11 05 38 37.6 205.5 1.3 19.4 600 5039 00 46 26 Schedule for YEBES40M (Code Ys ) 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 56 52 J0942-0759 11 06 04 37.8 206.2 1.4 19.8 11 5039 00 56 52 00 58 52 =0939-077 11 08 04 37.6 206.8 1.4 20.2 120 5070 00 56 53 00 59 17 0941-080 11 08 30 37.4 206.4 1.4 20.0 10 5070 00 59 17 01 09 17 --- 11 18 32 36.5 209.3 1.6 22.1 600 5225 00 59 18 01 09 44 J0942-0759 11 18 58 36.6 209.9 1.6 22.5 11 5225 01 09 44 01 11 44 =0939-077 11 20 59 36.4 210.5 1.6 22.9 120 5256 01 09 45 01 12 10 0941-080 11 21 24 36.2 210.1 1.6 22.7 10 5256 01 12 10 01 22 10 --- 11 31 26 35.2 212.9 1.8 24.7 600 5410 01 12 11 01 22 36 J0942-0759 11 31 52 35.3 213.5 1.8 25.1 11 5410 01 22 36 01 24 36 =0939-077 11 33 53 35.1 214.1 1.8 25.5 120 5441 01 22 37 01 25 02 0941-080 11 34 18 34.9 213.7 1.8 25.2 10 5441 01 25 02 01 35 02 --- 11 44 20 33.8 216.4 2.0 27.1 600 5596 01 25 03 01 35 28 J0942-0759 11 44 47 33.9 217.0 2.0 27.5 11 5596 01 35 28 01 37 28 =0939-077 11 46 47 33.7 217.5 2.1 27.9 120 5627 01 35 29 01 37 54 0941-080 11 47 13 33.5 217.1 2.0 27.6 10 5627 01 37 54 01 47 54 --- 11 57 14 32.3 219.7 2.2 29.4 600 5781 01 37 55 01 48 20 J0942-0759 11 57 41 32.4 220.4 2.2 29.8 11 5781 01 48 20 01 50 20 =0939-077 11 59 41 32.1 220.9 2.3 30.2 120 5812 01 48 21 01 50 46 0941-080 12 00 07 32.0 220.5 2.3 29.9 10 5812 01 50 46 02 00 46 --- 12 10 09 30.7 223.0 2.4 31.6 600 5967 01 50 47 02 01 12 J0942-0759 12 10 35 30.7 223.6 2.5 32.0 11 5967 02 01 12 02 03 12 =0939-077 12 12 35 30.5 224.1 2.5 32.3 120 5998 02 01 13 02 03 38 0941-080 12 13 01 30.3 223.7 2.5 32.0 10 5998 02 03 38 02 13 38 --- 12 23 03 29.0 226.1 2.6 33.6 600 6152 02 03 39 02 14 04 J0942-0759 12 23 29 29.0 226.7 2.7 33.9 11 6152 02 14 04 02 16 04 =0939-077 12 25 30 28.7 227.1 2.7 34.2 120 6183 02 14 05 02 16 04 3C286 12 25 30 73.1 121.6 -1.1 -48.6 -120 6183 No stop 02 30 00 --- 12 39 28 75.2 129.3 -0.9 -43.0 716 6399 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: 5 Station: YEBES40M 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= 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 4158.00 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: 9 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= 672.49 672.49 672.49 672.49 736.49 736.49 736.49 736.49 800.49 800.49 800.49 800.49 864.49 864.49 864.49 864.49 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: 9 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