COVER INFORMATION Station: KNOCKIN (Code Kn ) Experiment: Nuclear Outflows Exp. Code: EC088G Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Sina Chen Address: Technion Technion Haifa Israel Phone: +972-58-6274695 EMAIL: sina.chen@campus.technion.ac.il Fax: Phone during observation: +972-58-6274695 Observing mode: vlbi Notes: COVER LETTER: Schedule for KNOCKIN (Code Kn ) Page 2 Nuclear Outflows 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2023 Day 66 --- Next scan frequencies: 1626.49 1626.49 Next BBC frequencies: 645.51 645.51 Next scan bandwidths: 64.00 64.00 20 00 00 J1159+2914 06 49 08 29.9 80.1 -5.2 -43.0 0 0 20 00 00 20 04 00 =1156+295 06 53 08 30.5 80.9 -5.1 -43.1 240 15 20 00 01 20 05 30 J1213+1307 06 54 39 16.3 89.9 -5.3 -38.4 25 15 20 05 30 20 07 30 --- 06 56 39 16.6 90.3 -5.3 -38.4 120 23 20 05 31 20 07 30 PG1211+143 06 56 39 17.2 89.6 -5.3 -38.5 -15 23 No stop 20 11 10 --- 07 00 20 17.8 90.3 -5.3 -38.5 205 37 20 07 31 20 11 10 J1213+1307 07 00 20 17.2 91.0 -5.2 -38.4 -16 37 No stop 20 13 10 --- 07 02 20 17.5 91.4 -5.2 -38.3 104 45 20 11 11 20 13 10 PG1211+143 07 02 20 18.1 90.7 -5.2 -38.5 -15 45 No stop 20 16 50 --- 07 06 01 18.7 91.4 -5.2 -38.5 205 59 20 13 11 20 17 20 J1213+1307 07 06 31 18.1 92.3 -5.1 -38.3 14 59 20 17 20 20 18 50 --- 07 08 01 18.4 92.6 -5.1 -38.3 90 65 20 17 21 20 18 50 PG1211+143 07 08 01 19.0 91.8 -5.1 -38.5 -15 65 No stop 20 22 30 --- 07 11 42 19.5 92.6 -5.1 -38.5 205 79 20 18 51 20 22 30 J1213+1307 07 11 42 18.9 93.3 -5.1 -38.3 -16 79 No stop 20 24 30 --- 07 13 42 19.2 93.7 -5.0 -38.3 104 87 20 22 31 20 24 30 PG1211+143 07 13 42 19.8 93.0 -5.0 -38.5 -15 87 No stop 20 28 10 --- 07 17 22 20.4 93.7 -5.0 -38.4 205 101 20 24 31 20 28 40 J1213+1307 07 17 53 19.8 94.6 -4.9 -38.2 14 101 20 28 40 20 30 10 --- 07 19 23 20.1 94.9 -4.9 -38.2 90 107 20 28 41 20 30 10 PG1211+143 07 19 23 20.7 94.1 -4.9 -38.4 -15 107 No stop 20 33 50 --- 07 23 03 21.2 94.9 -4.9 -38.4 205 121 20 30 11 20 33 50 J1213+1307 07 23 03 20.6 95.6 -4.9 -38.1 -16 121 No stop 20 35 50 --- 07 25 04 20.9 96.1 -4.8 -38.1 104 129 20 33 51 20 35 50 PG1211+143 07 25 04 21.5 95.3 -4.8 -38.3 -15 129 No stop 20 39 30 --- 07 28 44 22.1 96.0 -4.8 -38.3 205 143 20 35 51 20 40 00 J1213+1307 07 29 14 21.5 96.9 -4.8 -38.0 14 143 20 40 00 20 41 30 --- 07 30 45 21.8 97.2 -4.7 -38.0 90 149 20 40 01 Schedule for KNOCKIN (Code Kn ) Page 3 Nuclear Outflows 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2023 Day 66 --- 20 41 30 PG1211+143 07 30 45 22.4 96.4 -4.7 -38.3 -15 149 No stop 20 45 10 --- 07 34 25 22.9 97.2 -4.7 -38.2 205 163 20 41 31 20 45 10 J1213+1307 07 34 25 22.3 98.0 -4.7 -37.9 -16 163 No stop 20 47 10 --- 07 36 26 22.6 98.4 -4.6 -37.9 104 171 20 45 11 20 47 10 PG1211+143 07 36 26 23.2 97.6 -4.7 -38.1 -16 171 No stop 20 50 50 --- 07 40 06 23.8 98.4 -4.6 -38.1 204 185 20 47 11 20 51 20 J1213+1307 07 40 36 23.2 99.3 -4.6 -37.8 14 185 20 51 20 20 52 50 --- 07 42 07 23.5 99.6 -4.5 -37.7 90 191 20 51 21 20 52 50 PG1211+143 07 42 07 24.1 98.8 -4.6 -38.0 -16 191 No stop 20 56 30 --- 07 45 47 24.6 99.6 -4.5 -37.9 204 205 20 52 51 20 56 30 J1213+1307 07 45 47 24.0 100.4 -4.5 -37.6 -16 205 No stop 20 58 30 --- 07 47 47 24.3 100.8 -4.4 -37.6 104 213 20 56 31 20 58 30 PG1211+143 07 47 47 24.9 100.0 -4.5 -37.8 -16 213 No stop 21 02 10 --- 07 51 28 25.5 100.8 -4.4 -37.7 204 227 20 58 31 21 02 40 J1213+1307 07 51 58 24.9 101.7 -4.4 -37.4 13 227 21 02 40 21 04 10 --- 07 53 28 25.2 102.0 -4.4 -37.4 90 233 21 02 41 21 04 10 PG1211+143 07 53 28 25.8 101.2 -4.4 -37.7 -16 233 No stop 21 07 50 --- 07 57 09 26.3 102.0 -4.3 -37.5 204 247 21 04 11 21 07 50 J1213+1307 07 57 09 25.7 102.8 -4.3 -37.2 -17 247 No stop 21 09 50 --- 07 59 09 26.0 103.2 -4.3 -37.2 103 254 21 07 51 21 09 50 PG1211+143 07 59 09 26.6 102.4 -4.3 -37.5 -16 254 No stop 21 13 30 --- 08 02 50 27.2 103.2 -4.2 -37.3 204 269 21 09 51 21 14 00 J1213+1307 08 03 20 26.6 104.1 -4.2 -37.0 13 269 21 14 00 21 15 30 --- 08 04 50 26.8 104.5 -4.2 -36.9 90 274 21 14 01 21 15 30 PG1211+143 08 04 50 27.5 103.7 -4.2 -37.3 -16 274 No stop 21 19 10 --- 08 08 31 28.0 104.5 -4.1 -37.1 204 289 21 15 31 21 19 10 J1213+1307 08 08 31 27.4 105.3 -4.1 -36.8 -17 289 No stop 21 21 10 --- 08 10 31 27.7 105.7 -4.1 -36.7 103 296 21 19 11 21 21 10 PG1211+143 08 10 31 28.3 104.9 -4.1 -37.0 -16 296 No stop 21 24 50 --- 08 14 12 28.8 105.7 -4.0 -36.9 204 310 21 21 11 Schedule for KNOCKIN (Code Kn ) Page 4 Nuclear Outflows 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2023 Day 66 --- 21 25 20 J1213+1307 08 14 42 28.3 106.6 -4.0 -36.5 13 310 21 25 20 21 26 50 --- 08 16 12 28.5 107.0 -4.0 -36.4 90 316 21 25 21 21 26 50 PG1211+143 08 16 12 29.1 106.2 -4.0 -36.8 -16 316 No stop 21 30 30 --- 08 19 53 29.7 107.0 -3.9 -36.6 204 330 21 26 51 21 30 30 J1213+1307 08 19 53 29.0 107.8 -3.9 -36.2 -17 330 No stop 21 32 30 --- 08 21 53 29.3 108.2 -3.9 -36.1 103 338 21 30 31 21 32 30 PG1211+143 08 21 53 29.9 107.4 -3.9 -36.5 -16 338 No stop 21 36 10 --- 08 25 34 30.5 108.3 -3.8 -36.3 204 352 21 32 31 21 36 40 J1213+1307 08 26 04 29.9 109.2 -3.8 -35.9 13 352 21 36 40 21 38 10 --- 08 27 34 30.1 109.5 -3.8 -35.8 90 358 21 36 41 21 38 10 PG1211+143 08 27 34 30.8 108.7 -3.8 -36.2 -16 358 No stop 21 41 50 --- 08 31 15 31.3 109.6 -3.7 -36.0 204 372 21 38 11 21 41 50 J1213+1307 08 31 15 30.6 110.4 -3.7 -35.6 -17 372 No stop 21 43 50 --- 08 33 15 30.9 110.8 -3.7 -35.5 103 380 21 41 51 21 43 50 PG1211+143 08 33 15 31.6 110.0 -3.7 -35.8 -16 380 No stop 21 47 30 --- 08 36 55 32.1 110.9 -3.6 -35.6 204 394 21 43 51 21 48 00 J1213+1307 08 37 26 31.5 111.8 -3.6 -35.2 13 394 21 48 00 21 49 30 --- 08 38 56 31.7 112.2 -3.6 -35.1 90 400 21 48 01 21 49 30 PG1211+143 08 38 56 32.4 111.3 -3.6 -35.5 -16 400 No stop 21 51 30 --- 08 40 56 32.7 111.8 -3.6 -35.3 104 408 21 49 31 21 51 30 J1213+1307 08 40 56 32.0 112.6 -3.6 -35.0 -17 408 No stop 21 53 30 --- 08 42 56 32.3 113.1 -3.5 -34.8 103 415 21 51 31 21 53 30 PG1211+143 08 42 56 32.9 112.3 -3.5 -35.2 -16 415 No stop 21 55 30 --- 08 44 57 33.2 112.8 -3.5 -35.1 104 423 21 53 31 21 56 00 J1213+1307 08 45 27 32.6 113.7 -3.5 -34.6 13 423 21 56 00 21 57 30 --- 08 46 57 32.8 114.1 -3.5 -34.5 90 429 21 56 01 21 58 30 J1159+2914 08 47 57 47.7 104.6 -3.2 -42.1 -7 429 21 58 30 22 02 30 =1156+295 08 51 58 48.3 105.6 -3.1 -41.8 233 444 21 58 31 22 23 30 PG1426+015 09 13 01 7.4 97.8 -5.3 -36.8 1106 444 22 23 30 22 27 10 --- 09 16 42 7.9 98.6 -5.2 -36.7 220 459 22 23 31 Schedule for KNOCKIN (Code Kn ) Page 5 Nuclear Outflows 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2023 Day 66 --- 22 29 10 PG1426+015 09 18 42 8.2 99.0 -5.2 -36.7 115 459 22 29 10 22 32 50 --- 09 22 23 8.8 99.7 -5.1 -36.6 220 473 22 29 11 22 32 50 J1430-0009 09 22 23 7.4 100.3 -5.2 -36.5 -20 473 No stop 22 34 50 --- 09 24 23 7.7 100.7 -5.1 -36.5 100 480 22 32 51 22 34 50 PG1426+015 09 24 23 9.1 100.1 -5.1 -36.5 -21 480 No stop 22 38 30 --- 09 28 04 9.6 100.9 -5.0 -36.4 199 495 22 34 51 22 39 00 J1430-0009 09 28 34 8.3 101.6 -5.1 -36.3 10 495 22 39 00 22 40 30 --- 09 30 04 8.6 101.9 -5.0 -36.3 90 500 22 39 01 22 40 30 PG1426+015 09 30 04 9.9 101.3 -5.0 -36.4 -21 500 No stop 22 44 10 --- 09 33 45 10.5 102.0 -4.9 -36.3 199 515 22 40 31 22 44 10 J1430-0009 09 33 45 9.1 102.6 -5.0 -36.2 -20 515 No stop 22 46 10 --- 09 35 45 9.4 103.0 -4.9 -36.1 100 522 22 44 11 22 46 10 PG1426+015 09 35 45 10.8 102.5 -4.9 -36.2 -21 522 No stop 22 49 50 --- 09 39 26 11.3 103.2 -4.8 -36.1 199 537 22 46 11 22 50 20 J1430-0009 09 39 56 10.0 103.9 -4.9 -35.9 10 537 22 50 20 22 51 50 --- 09 41 26 10.2 104.2 -4.8 -35.9 90 542 22 50 21 22 51 50 PG1426+015 09 41 26 11.6 103.6 -4.8 -36.0 -21 542 No stop 22 55 30 --- 09 45 07 12.1 104.4 -4.8 -35.9 199 556 22 51 51 22 55 30 J1430-0009 09 45 07 10.8 104.9 -4.8 -35.8 -20 556 No stop 22 57 30 --- 09 47 07 11.1 105.4 -4.7 -35.7 100 564 22 55 31 22 57 30 PG1426+015 09 47 07 12.4 104.8 -4.7 -35.8 -21 564 No stop 23 01 10 --- 09 50 48 13.0 105.6 -4.7 -35.6 199 578 22 57 31 23 01 40 J1430-0009 09 51 18 11.7 106.2 -4.7 -35.5 10 578 23 01 40 23 03 10 --- 09 52 48 11.9 106.5 -4.6 -35.4 90 584 23 01 41 23 03 10 PG1426+015 09 52 48 13.3 106.0 -4.6 -35.6 -21 584 No stop 23 06 50 --- 09 56 29 13.8 106.8 -4.6 -35.4 199 598 23 03 11 23 06 50 J1430-0009 09 56 29 12.4 107.3 -4.6 -35.3 -20 598 No stop 23 08 50 --- 09 58 29 12.7 107.7 -4.6 -35.2 100 606 23 06 51 23 08 50 PG1426+015 09 58 29 14.1 107.2 -4.5 -35.3 -21 606 No stop 23 12 30 --- 10 02 09 14.6 108.0 -4.5 -35.1 199 620 23 08 51 Schedule for KNOCKIN (Code Kn ) Page 6 Nuclear Outflows 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2023 Day 66 --- 23 13 00 J1430-0009 10 02 40 13.3 108.6 -4.5 -35.0 10 620 23 13 00 23 14 30 --- 10 04 10 13.5 108.9 -4.5 -34.9 90 626 23 13 01 23 14 30 PG1426+015 10 04 10 14.9 108.4 -4.4 -35.0 -21 626 No stop 23 18 10 --- 10 07 50 15.4 109.2 -4.4 -34.8 199 640 23 14 31 23 18 10 J1430-0009 10 07 50 14.0 109.7 -4.4 -34.7 -20 640 No stop 23 20 10 --- 10 09 51 14.3 110.1 -4.4 -34.6 100 648 23 18 11 23 20 10 PG1426+015 10 09 51 15.7 109.6 -4.3 -34.7 -21 648 No stop 23 23 50 --- 10 13 31 16.2 110.4 -4.3 -34.5 199 662 23 20 11 23 24 20 J1430-0009 10 14 01 14.9 111.0 -4.3 -34.4 10 662 23 24 20 23 25 50 --- 10 15 32 15.1 111.3 -4.3 -34.3 90 668 23 24 21 23 25 50 PG1426+015 10 15 32 16.5 110.8 -4.2 -34.4 -21 668 No stop 23 29 30 --- 10 19 12 17.0 111.6 -4.2 -34.2 199 682 23 25 51 23 29 30 J1430-0009 10 19 12 15.7 112.1 -4.2 -34.1 -20 682 No stop 23 31 30 --- 10 21 13 15.9 112.6 -4.2 -33.9 100 690 23 29 31 23 31 30 PG1426+015 10 21 13 17.3 112.0 -4.2 -34.1 -21 690 No stop 23 35 10 --- 10 24 53 17.8 112.8 -4.1 -33.9 199 704 23 31 31 23 35 40 J1430-0009 10 25 23 16.5 113.5 -4.1 -33.7 10 704 23 35 40 23 37 10 --- 10 26 54 16.7 113.8 -4.1 -33.6 90 710 23 35 41 23 37 10 PG1426+015 10 26 54 18.1 113.3 -4.1 -33.8 -21 710 No stop 23 40 50 --- 10 30 34 18.6 114.1 -4.0 -33.5 199 724 23 37 11 23 40 50 J1430-0009 10 30 34 17.2 114.6 -4.0 -33.4 -20 724 No stop 23 42 50 --- 10 32 34 17.5 115.0 -4.0 -33.2 100 732 23 40 51 23 42 50 PG1426+015 10 32 34 18.9 114.5 -4.0 -33.4 -21 732 No stop 23 46 30 --- 10 36 15 19.4 115.3 -3.9 -33.1 199 746 23 42 51 23 47 00 J1430-0009 10 36 45 18.1 115.9 -3.9 -32.9 10 746 23 47 00 23 48 30 --- 10 38 15 18.3 116.3 -3.9 -32.8 90 752 23 47 01 23 48 30 PG1426+015 10 38 15 19.7 115.8 -3.9 -33.0 -21 752 No stop 23 50 30 --- 10 40 16 19.9 116.2 -3.8 -32.9 99 759 23 48 31 23 50 30 J1430-0009 10 40 16 18.5 116.7 -3.9 -32.7 -20 759 No stop 23 52 30 --- 10 42 16 18.8 117.2 -3.8 -32.5 100 767 23 50 31 Schedule for KNOCKIN (Code Kn ) Page 7 Nuclear Outflows 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 ---------------------------------------------------------------------------------------- --- Tue 7 Mar 2023 Day 66 --- 23 52 30 PG1426+015 10 42 16 20.2 116.7 -3.8 -32.7 -21 767 No stop 23 54 30 --- 10 44 16 20.5 117.1 -3.8 -32.6 99 775 23 52 31 23 55 00 J1430-0009 10 44 46 19.2 117.7 -3.8 -32.4 10 775 23 55 00 23 56 30 --- 10 46 17 19.4 118.1 -3.8 -32.3 90 781 23 55 01 23 57 00 J1430+1043 10 46 47 28.6 111.7 -3.7 -34.9 -21 781 23 57 00 23 59 59 =1427+109 10 49 47 29.0 112.4 -3.7 -34.7 158 792 23 57 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.L1024 --- 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: 13 Station: KNOCKIN Total bit rate: 512 Format: VDIF Bits per sample: 2 Sample rate:128.000 Number of channels: 2 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2272.00 2272.00 Net SB= U U IF SB = L L Pol. = RCP LCP BBC = 1 9 BBC SB= L L IF = A1 B1 The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 BBC fr= 645.51 645.51 Bandwd= 64.00 64.00 Matching frequency sets: 9 10 11 12 13 Track assignments are: track1= 1, 2 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * PG1211+143 12 11 44.867507 * 12 14 17.670000 12 15 29.246834 0.00 14 19 53.50242 * 14 03 13.10000 13 55 23.49097 0.00 From catalog imbedded in main SCHED input file. * J1213+1307 12 10 59.250650 * 12 13 32.170500 12 14 43.792627 0.00 13 24 01.49571 * 13 07 20.90500 12 59 31.30675 0.00 From catalog imbedded in main SCHED input file. * PG1426+015 14 26 33.792063 * 14 29 06.588000 14 30 17.669849 0.00 01 30 27.21137 * 01 17 06.48000 01 10 47.37728 0.00 From catalog imbedded in main SCHED input file. * J1430-0009 14 27 57.497435 * 14 30 31.301900 14 31 42.835616 0.00 00 04 09.41730 *-00 09 07.61700 -00 15 24.64347 0.00 From catalog imbedded in main SCHED input file. 1156+295 11 56 57.786211 * 11 59 31.833912 12 00 44.227585 0.00 * J1159+2914 29 31 25.73880 * 29 14 43.82690 29 06 53.58370 0.00 J1159+29 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 78215 observations. 1427+109 14 27 43.700718 * 14 30 09.738797 14 31 17.762406 0.06 * J1430+1043 10 56 44.61950 * 10 43 26.86236 10 37 06.63761 0.12 J1430+10 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 179 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 PG1211+143 sess123.L1024 1 2 3 4 5 6 7 8 9 14 15 1.167 112.046 J1213+1307 sess123.L1024 1 2 3 4 5 6 7 8 9 14 15 0.617 56.037 PG1426+015 sess123.L1024 1 2 3 4 5 6 7 8 9 14 15 1.167 96.781 J1430-0009 sess123.L1024 1 2 3 4 5 6 7 8 9 14 15 0.617 44.756 J1159+2914 sess123.L1024 1 2 3 4 5 6 7 8 9 14 15 0.133 13.462 J1430+1043 sess123.L1024 1 2 3 4 5 6 7 8 9 14 15 0.050 4.468 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) PG1211+143 162.1 J1213+1307 162.7 PG1426+015 130.5 J1430-0009 130.0 J1159+2914 153.4 J1430+1043 130.5 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