COVER INFORMATION Station: WSTRBORK (Code Wb ) Experiment: CLAGN 1ES 1927+654 Exp. Code: EY038A Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Xiaolong Yang Address: Shanghai Astronomical Observatory 80 Nandan Road Shanghai China Phone: +86 18810844136 EMAIL: yangxl@shao.ac.cn Fax: Phone during observation: +86 18810844136 Observing mode: Phase-referencing mode at 3.6cm (2048Mb/s) Notes: v3 shifts 20s from target to phs.ref. scans Schedule for WSTRBORK (Code Wb ) Page 2 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- Next scan frequencies: 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 Next BBC frequencies: 371.49 371.49 371.49 371.49 435.49 435.49 435.49 435.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 15 00 00 1933+655 17 29 32 69.9 38.3 -2.1 0.0 0 0 15 00 00 15 01 00 --- 17 30 32 70.0 38.2 -2.1 0.0 60 8 15 00 01 15 01 00 1933+655 17 30 32 70.0 38.2 -2.1 0.0 -10 8 No stop 15 05 00 --- 17 34 32 70.4 37.7 -2.0 0.0 230 39 15 01 01 15 05 00 1927+654 17 34 32 71.1 37.0 -1.9 0.0 -19 39 No stop 15 08 00 --- 17 37 33 71.3 36.5 -1.8 0.0 161 62 15 05 01 15 08 00 1933+655 17 37 33 70.7 37.2 -1.9 0.0 -18 62 No stop 15 09 00 --- 17 38 33 70.8 37.1 -1.9 0.0 42 70 15 08 01 15 09 30 1927+654 17 39 03 71.5 36.3 -1.8 0.0 11 70 15 09 30 15 12 00 --- 17 41 34 71.7 35.9 -1.8 0.0 150 89 15 09 31 15 12 00 1933+655 17 41 34 71.1 36.7 -1.9 0.0 -18 89 No stop 15 13 00 --- 17 42 34 71.1 36.5 -1.9 0.0 42 97 15 12 01 15 13 02 1927+654 17 42 36 71.8 35.7 -1.7 0.0 -17 97 No stop 15 15 50 --- 17 45 24 72.0 35.2 -1.7 0.0 151 119 15 13 01 15 15 50 1933+655 17 45 24 71.4 36.0 -1.8 0.0 -18 119 No stop 15 16 50 --- 17 46 24 71.5 35.9 -1.8 0.0 42 126 15 15 51 15 16 50 1927+654 17 46 24 72.1 35.0 -1.7 0.0 -19 126 No stop 15 19 50 --- 17 49 25 72.4 34.5 -1.6 0.0 161 149 15 16 51 15 19 50 1933+655 17 49 25 71.7 35.4 -1.7 0.0 -18 149 No stop 15 20 50 --- 17 50 25 71.8 35.2 -1.7 0.0 42 157 15 19 51 15 21 20 1927+654 17 50 55 72.5 34.2 -1.6 0.0 11 157 15 21 20 15 23 50 --- 17 53 26 72.7 33.7 -1.6 0.0 150 176 15 21 21 15 23 50 1933+655 17 53 26 72.1 34.7 -1.7 0.0 -18 176 No stop 15 24 50 --- 17 54 26 72.2 34.5 -1.7 0.0 42 184 15 23 51 15 24 52 1927+654 17 54 28 72.8 33.5 -1.5 0.0 -17 184 No stop 15 27 40 --- 17 57 16 73.0 32.9 -1.5 0.0 151 206 15 24 51 15 27 40 1933+655 17 57 16 72.4 33.9 -1.6 0.0 -18 206 No stop 15 28 40 --- 17 58 16 72.5 33.7 -1.6 0.0 42 214 15 27 41 Schedule for WSTRBORK (Code Wb ) Page 3 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 15 28 40 1927+654 17 58 16 73.1 32.6 -1.5 0.0 -19 214 No stop 15 31 40 --- 18 01 17 73.4 32.0 -1.4 0.0 161 237 15 28 41 15 31 40 1933+655 18 01 17 72.8 33.1 -1.5 0.0 -18 237 No stop 15 32 40 --- 18 02 17 72.8 32.9 -1.5 0.0 42 245 15 31 41 15 33 10 1927+654 18 02 47 73.5 31.6 -1.4 0.0 11 245 15 33 10 15 35 40 --- 18 05 17 73.7 31.0 -1.4 0.0 150 264 15 33 11 15 35 40 1933+655 18 05 17 73.1 32.3 -1.5 0.0 -18 264 No stop 15 36 40 --- 18 06 18 73.2 32.0 -1.5 0.0 42 272 15 35 41 15 36 42 1927+654 18 06 20 73.8 30.8 -1.4 0.0 -17 272 No stop 15 39 30 --- 18 09 08 74.0 30.1 -1.3 0.0 151 294 15 36 41 15 39 30 1933+655 18 09 08 73.4 31.4 -1.4 0.0 -18 294 No stop 15 40 30 --- 18 10 08 73.5 31.2 -1.4 0.0 42 301 15 39 31 15 40 30 1927+654 18 10 08 74.0 29.8 -1.3 0.0 -19 301 No stop 15 43 30 --- 18 13 09 74.3 29.0 -1.2 0.0 161 325 15 40 31 15 43 30 1933+655 18 13 09 73.7 30.4 -1.3 0.0 -18 325 No stop 15 44 30 --- 18 14 09 73.8 30.2 -1.3 0.0 42 332 15 43 31 15 45 00 1927+654 18 14 39 74.4 28.6 -1.2 0.0 11 332 15 45 00 15 47 30 --- 18 17 09 74.6 27.9 -1.2 0.0 150 352 15 45 01 15 47 30 1933+655 18 17 09 74.0 29.4 -1.3 0.0 -18 352 No stop 15 48 30 --- 18 18 10 74.1 29.2 -1.3 0.0 42 359 15 47 31 15 48 32 1927+654 18 18 12 74.6 27.6 -1.2 0.0 -17 359 No stop 15 51 20 --- 18 21 00 74.8 26.8 -1.1 0.0 151 381 15 48 31 15 51 20 1933+655 18 21 00 74.3 28.4 -1.2 0.0 -18 381 No stop 15 52 20 --- 18 22 00 74.4 28.1 -1.2 0.0 42 389 15 51 21 15 52 20 1927+654 18 22 00 74.9 26.5 -1.1 0.0 -19 389 No stop 15 55 20 --- 18 25 01 75.1 25.6 -1.0 0.0 161 412 15 52 21 15 55 20 1933+655 18 25 01 74.6 27.3 -1.2 0.0 -18 412 No stop 15 56 20 --- 18 26 01 74.6 27.0 -1.1 0.0 42 420 15 55 21 15 56 50 1927+654 18 26 31 75.2 25.1 -1.0 0.0 11 420 15 56 50 15 59 20 --- 18 29 01 75.3 24.3 -1.0 0.0 150 439 15 56 51 Schedule for WSTRBORK (Code Wb ) Page 4 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 15 59 20 1933+655 18 29 01 74.8 26.1 -1.1 0.0 -18 439 No stop 16 00 20 --- 18 30 01 74.9 25.8 -1.1 0.0 42 447 15 59 21 16 00 22 1927+654 18 30 04 75.4 24.0 -1.0 0.0 -17 447 No stop 16 03 10 --- 18 32 52 75.6 23.0 -0.9 0.0 151 469 16 00 21 16 03 10 1933+655 18 32 52 75.1 24.9 -1.0 0.0 -18 469 No stop 16 04 10 --- 18 33 52 75.1 24.6 -1.0 0.0 42 477 16 03 11 16 04 10 1927+654 18 33 52 75.6 22.7 -0.9 0.0 -19 477 No stop 16 07 10 --- 18 36 53 75.8 21.6 -0.8 0.0 161 500 16 04 11 16 07 10 1933+655 18 36 53 75.3 23.6 -1.0 0.0 -18 500 No stop 16 08 10 --- 18 37 53 75.4 23.3 -0.9 0.0 42 508 16 07 11 16 08 40 1927+654 18 38 23 75.9 21.1 -0.8 0.0 11 508 16 08 40 16 11 10 --- 18 40 53 76.0 20.2 -0.8 0.0 150 527 16 08 41 16 11 10 1933+655 18 40 53 75.6 22.3 -0.9 0.0 -18 527 No stop 16 12 10 --- 18 41 53 75.6 22.0 -0.9 0.0 42 535 16 11 11 16 12 12 1927+654 18 41 55 76.1 19.8 -0.8 0.0 -17 535 No stop 16 15 00 --- 18 44 44 76.2 18.7 -0.7 0.0 151 556 16 12 11 16 15 00 1933+655 18 44 44 75.8 21.0 -0.8 0.0 -18 556 No stop 16 16 00 --- 18 45 44 75.8 20.6 -0.8 0.0 42 564 16 15 01 16 16 00 1927+654 18 45 44 76.3 18.3 -0.7 0.0 -19 564 No stop 16 19 00 --- 18 48 45 76.4 17.2 -0.6 0.0 161 587 16 16 01 16 19 00 1933+655 18 48 45 76.0 19.5 -0.8 0.0 -18 587 No stop 16 20 00 --- 18 49 45 76.0 19.1 -0.7 0.0 42 595 16 19 01 16 20 30 1927+654 18 50 15 76.5 16.6 -0.6 0.0 11 595 16 20 30 16 23 00 --- 18 52 45 76.6 15.6 -0.6 0.0 150 614 16 20 31 16 23 00 1933+655 18 52 45 76.2 18.0 -0.7 0.0 -18 614 No stop 16 24 00 --- 18 53 45 76.2 17.6 -0.7 0.0 42 622 16 23 01 16 24 02 1927+654 18 53 47 76.6 15.1 -0.6 0.0 -17 622 No stop 16 26 50 --- 18 56 36 76.7 14.0 -0.5 0.0 151 644 16 24 01 16 26 50 1933+655 18 56 36 76.4 16.5 -0.6 0.0 -18 644 No stop 16 27 50 --- 18 57 36 76.4 16.1 -0.6 0.0 42 652 16 26 51 Schedule for WSTRBORK (Code Wb ) Page 5 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 16 27 50 1927+654 18 57 36 76.8 13.5 -0.5 0.0 -19 652 No stop 16 30 50 --- 19 00 37 76.9 12.2 -0.4 0.0 161 675 16 27 51 16 30 50 1933+655 19 00 37 76.5 14.9 -0.6 0.0 -18 675 No stop 16 31 50 --- 19 01 37 76.6 14.5 -0.5 0.0 42 683 16 30 51 16 32 20 1927+654 19 02 07 76.9 11.6 -0.4 0.0 11 683 16 32 20 16 34 50 --- 19 04 37 77.0 10.5 -0.4 0.0 150 702 16 32 21 16 34 50 1933+655 19 04 37 76.7 13.2 -0.5 0.0 -18 702 No stop 16 35 50 --- 19 05 37 76.7 12.8 -0.5 0.0 42 710 16 34 51 16 35 52 1927+654 19 05 39 77.0 10.0 -0.4 0.0 -17 710 No stop 16 38 40 --- 19 08 28 77.1 8.8 -0.3 0.0 151 732 16 35 51 16 38 40 1933+655 19 08 28 76.8 11.6 -0.4 0.0 -18 732 No stop 16 39 40 --- 19 09 28 76.8 11.1 -0.4 0.0 42 739 16 38 41 16 39 40 1927+654 19 09 28 77.1 8.3 -0.3 0.0 -19 739 No stop 16 42 40 --- 19 12 28 77.2 7.0 -0.2 0.0 161 763 16 39 41 16 42 40 1933+655 19 12 28 76.9 9.8 -0.4 0.0 -18 763 No stop 16 43 40 --- 19 13 29 76.9 9.4 -0.3 0.0 42 770 16 42 41 16 44 10 1927+654 19 13 59 77.2 6.3 -0.2 0.0 11 770 16 44 10 16 46 40 --- 19 16 29 77.2 5.1 -0.2 0.0 150 790 16 44 11 16 46 40 1933+655 19 16 29 77.0 8.1 -0.3 0.0 -18 790 No stop 16 47 40 --- 19 17 29 77.0 7.6 -0.3 0.0 42 797 16 46 41 16 47 42 1927+654 19 17 31 77.2 4.6 -0.2 0.0 -17 797 No stop 16 50 30 --- 19 20 20 77.3 3.3 -0.1 0.0 151 819 16 47 41 16 50 30 1933+655 19 20 20 77.1 6.3 -0.2 0.0 -18 819 No stop 16 51 30 --- 19 21 20 77.1 5.9 -0.2 0.0 42 827 16 50 31 16 51 30 1927+654 19 21 20 77.3 2.9 -0.1 0.0 -19 827 No stop 16 54 30 --- 19 24 20 77.3 1.5 -0.1 0.0 161 850 16 51 31 16 54 30 1933+655 19 24 20 77.1 4.5 -0.2 0.0 -18 850 No stop 16 55 30 --- 19 25 21 77.1 4.0 -0.1 0.0 42 858 16 54 31 16 56 00 1927+654 19 25 51 77.3 0.8 -0.0 0.0 11 858 16 56 00 16 58 30 --- 19 28 21 77.3 359.6 0.0 0.0 150 877 16 56 01 Schedule for WSTRBORK (Code Wb ) Page 6 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 16 58 30 1933+655 19 28 21 77.2 2.7 -0.1 0.0 -18 877 No stop 16 59 30 --- 19 29 21 77.2 2.2 -0.1 0.0 42 885 16 58 31 16 59 32 1927+654 19 29 23 77.3 359.1 0.0 0.0 -17 885 No stop 17 02 20 --- 19 32 12 77.3 357.8 0.1 0.0 151 907 16 59 31 17 02 20 1933+655 19 32 12 77.2 0.9 -0.0 0.0 -18 907 No stop 17 03 20 --- 19 33 12 77.2 0.4 -0.0 0.0 42 915 17 02 21 17 03 20 1927+654 19 33 12 77.3 357.3 0.1 0.0 -19 915 No stop 17 06 20 --- 19 36 12 77.3 355.9 0.1 0.0 161 938 17 03 21 17 06 20 1933+655 19 36 12 77.2 359.0 0.0 0.0 -18 938 No stop 17 07 20 --- 19 37 13 77.2 358.6 0.1 0.0 42 946 17 06 21 17 07 50 1927+654 19 37 43 77.2 355.2 0.2 0.0 11 946 17 07 50 17 10 20 --- 19 40 13 77.2 354.0 0.2 0.0 150 965 17 07 51 17 10 20 1933+655 19 40 13 77.2 357.2 0.1 0.0 -18 965 No stop 17 11 20 --- 19 41 13 77.2 356.7 0.1 0.0 42 973 17 10 21 17 11 22 1927+654 19 41 15 77.2 353.6 0.2 0.0 -17 973 No stop 17 14 10 --- 19 44 04 77.1 352.3 0.3 0.0 151 994 17 11 21 17 14 10 1933+655 19 44 04 77.1 355.4 0.2 0.0 -18 994 No stop 17 15 10 --- 19 45 04 77.1 354.9 0.2 0.0 42 1002 17 14 11 17 15 10 1927+654 19 45 04 77.1 351.8 0.3 0.0 -19 1002 No stop 17 18 10 --- 19 48 04 77.0 350.5 0.3 0.0 161 1025 17 15 11 17 18 10 1933+655 19 48 04 77.1 353.6 0.2 0.0 -18 1025 No stop 17 19 10 --- 19 49 04 77.1 353.1 0.2 0.0 42 1033 17 18 11 17 19 40 1927+654 19 49 35 77.0 349.8 0.4 0.0 11 1033 17 19 40 17 22 10 --- 19 52 05 76.9 348.7 0.4 0.0 150 1052 17 19 41 17 22 10 1933+655 19 52 05 77.0 351.8 0.3 0.0 -18 1052 No stop 17 23 10 --- 19 53 05 77.0 351.3 0.3 0.0 42 1060 17 22 11 17 23 12 1927+654 19 53 07 76.9 348.3 0.4 0.0 -17 1060 No stop 17 26 00 --- 19 55 56 76.8 347.0 0.5 0.0 151 1082 17 23 11 17 26 00 1933+655 19 55 56 76.9 350.1 0.4 0.0 -18 1082 No stop 17 27 00 --- 19 56 56 76.9 349.6 0.4 0.0 42 1090 17 26 01 Schedule for WSTRBORK (Code Wb ) Page 7 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 17 27 00 1927+654 19 56 56 76.8 346.6 0.5 0.0 -19 1090 No stop 17 30 00 --- 19 59 56 76.7 345.4 0.5 0.0 161 1113 17 27 01 17 30 00 1933+655 19 59 56 76.8 348.3 0.4 0.0 -18 1113 No stop 17 31 00 --- 20 00 56 76.8 347.9 0.4 0.0 42 1121 17 30 01 17 31 30 1927+654 20 01 26 76.6 344.7 0.6 0.0 11 1121 17 31 30 17 34 00 --- 20 03 57 76.5 343.7 0.6 0.0 150 1140 17 31 31 17 34 00 1933+655 20 03 57 76.7 346.6 0.5 0.0 -18 1140 No stop 17 35 00 --- 20 04 57 76.6 346.2 0.5 0.0 42 1148 17 34 01 17 35 02 1927+654 20 04 59 76.5 343.3 0.6 0.0 -17 1148 No stop 17 37 50 --- 20 07 48 76.3 342.2 0.7 0.0 151 1170 17 35 01 17 37 50 1933+655 20 07 48 76.5 345.0 0.6 0.0 -18 1170 No stop 17 38 50 --- 20 08 48 76.5 344.6 0.6 0.0 42 1177 17 37 51 17 38 50 1927+654 20 08 48 76.3 341.8 0.7 0.0 -19 1177 No stop 17 41 50 --- 20 11 48 76.1 340.6 0.7 0.0 161 1201 17 38 51 17 41 50 1933+655 20 11 48 76.3 343.4 0.6 0.0 -18 1201 No stop 17 42 50 --- 20 12 48 76.3 343.0 0.6 0.0 42 1208 17 41 51 17 43 20 1927+654 20 13 18 76.1 340.1 0.8 0.0 11 1208 17 43 20 17 45 50 --- 20 15 49 75.9 339.2 0.8 0.0 150 1228 17 43 21 17 45 50 1933+655 20 15 49 76.2 341.9 0.7 0.0 -18 1228 No stop 17 46 50 --- 20 16 49 76.1 341.5 0.7 0.0 42 1235 17 45 51 17 46 52 1927+654 20 16 51 75.9 338.8 0.8 0.0 -17 1235 No stop 17 49 40 --- 20 19 39 75.7 337.8 0.9 0.0 151 1257 17 46 51 17 49 40 1933+655 20 19 39 76.0 340.4 0.8 0.0 -18 1257 No stop 17 50 40 --- 20 20 40 75.9 340.0 0.8 0.0 42 1265 17 49 41 17 50 40 1927+654 20 20 40 75.7 337.4 0.9 0.0 -19 1265 No stop 17 53 40 --- 20 23 40 75.5 336.4 0.9 0.0 161 1288 17 50 41 17 53 40 1933+655 20 23 40 75.8 339.0 0.8 0.0 -18 1288 No stop 17 54 40 --- 20 24 40 75.7 338.6 0.8 0.0 42 1296 17 53 41 17 55 10 1927+654 20 25 10 75.4 335.9 1.0 0.0 11 1296 17 55 10 17 57 40 --- 20 27 41 75.2 335.1 1.0 0.0 150 1315 17 55 11 Schedule for WSTRBORK (Code Wb ) Page 8 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 17 57 40 1933+655 20 27 41 75.5 337.6 0.9 0.0 -18 1315 No stop 17 58 40 --- 20 28 41 75.5 337.2 0.9 0.0 42 1323 17 57 41 17 58 42 1927+654 20 28 43 75.2 334.8 1.0 0.0 -17 1323 No stop 18 01 30 --- 20 31 31 75.0 333.9 1.1 0.0 151 1345 17 58 41 18 01 30 1933+655 20 31 31 75.3 336.3 1.0 0.0 -18 1345 No stop 18 02 30 --- 20 32 32 75.3 335.9 1.0 0.0 42 1353 18 01 31 18 02 30 1927+654 20 32 32 74.9 333.6 1.1 0.0 -19 1353 No stop 18 05 30 --- 20 35 32 74.7 332.7 1.1 0.0 161 1376 18 02 31 18 05 30 1933+655 20 35 32 75.1 335.0 1.0 0.0 -18 1376 No stop 18 06 30 --- 20 36 32 75.0 334.7 1.0 0.0 42 1384 18 05 31 18 07 00 1927+654 20 37 02 74.6 332.3 1.2 0.0 11 1384 18 07 00 18 09 30 --- 20 39 33 74.4 331.6 1.2 0.0 150 1403 18 07 01 18 09 30 1933+655 20 39 33 74.8 333.8 1.1 0.0 -18 1403 No stop 18 10 30 --- 20 40 33 74.7 333.5 1.1 0.0 42 1411 18 09 31 18 10 30 1933+655 20 40 33 74.7 333.5 1.1 0.0 -10 1411 No stop 18 14 30 --- 20 44 34 74.5 332.3 1.2 0.0 230 1441 18 10 31 18 14 30 1927+654 20 44 34 74.1 330.2 1.3 0.0 -19 1441 No stop 18 17 30 --- 20 47 34 73.8 329.5 1.3 0.0 161 1465 18 14 31 18 17 30 1933+655 20 47 34 74.3 331.5 1.2 0.0 -18 1465 No stop 18 18 30 --- 20 48 34 74.2 331.2 1.2 0.0 42 1472 18 17 31 18 19 00 1927+654 20 49 04 73.7 329.1 1.4 0.0 11 1472 18 19 00 18 21 30 --- 20 51 35 73.5 328.5 1.4 0.0 150 1492 18 19 01 18 21 30 1933+655 20 51 35 74.0 330.4 1.3 0.0 -18 1492 No stop 18 22 30 --- 20 52 35 73.9 330.2 1.3 0.0 42 1499 18 21 31 18 22 32 1927+654 20 52 37 73.4 328.3 1.4 0.0 -17 1499 No stop 18 25 20 --- 20 55 25 73.2 327.6 1.5 0.0 151 1521 18 22 31 18 25 20 1933+655 20 55 25 73.7 329.5 1.4 0.0 -18 1521 No stop 18 26 20 --- 20 56 25 73.6 329.2 1.4 0.0 42 1529 18 25 21 18 26 20 1927+654 20 56 25 73.1 327.4 1.5 0.0 -19 1529 No stop 18 29 20 --- 20 59 26 72.9 326.8 1.5 0.0 161 1552 18 26 21 Schedule for WSTRBORK (Code Wb ) Page 9 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 18 29 20 1933+655 20 59 26 73.4 328.5 1.4 0.0 -18 1552 No stop 18 30 20 --- 21 00 26 73.3 328.3 1.4 0.0 42 1560 18 29 21 18 30 50 1927+654 21 00 56 72.8 326.4 1.6 0.0 11 1560 18 30 50 18 33 20 --- 21 03 27 72.6 325.9 1.6 0.0 150 1579 18 30 51 18 33 20 1933+655 21 03 27 73.0 327.6 1.5 0.0 -18 1579 No stop 18 34 20 --- 21 04 27 73.0 327.4 1.5 0.0 42 1587 18 33 21 18 34 22 1927+654 21 04 29 72.5 325.7 1.6 0.0 -17 1587 No stop 18 37 10 --- 21 07 17 72.2 325.2 1.7 0.0 151 1609 18 34 21 18 37 10 1933+655 21 07 17 72.7 326.8 1.6 0.0 -18 1609 No stop 18 38 10 --- 21 08 17 72.6 326.6 1.6 0.0 42 1617 18 37 11 18 38 10 1927+654 21 08 17 72.1 325.0 1.7 0.0 -19 1617 No stop 18 41 10 --- 21 11 18 71.9 324.5 1.7 0.0 161 1640 18 38 11 18 41 10 1933+655 21 11 18 72.4 326.0 1.6 0.0 -18 1640 No stop 18 42 10 --- 21 12 18 72.3 325.8 1.6 0.0 42 1648 18 41 11 18 42 40 1927+654 21 12 48 71.7 324.2 1.8 0.0 11 1648 18 42 40 18 45 10 --- 21 15 19 71.5 323.8 1.8 0.0 150 1667 18 42 41 18 45 10 1933+655 21 15 19 72.0 325.2 1.7 0.0 -18 1667 No stop 18 46 10 --- 21 16 19 72.0 325.1 1.7 0.0 42 1675 18 45 11 18 46 12 1927+654 21 16 21 71.4 323.6 1.8 0.0 -17 1675 No stop 18 49 00 --- 21 19 09 71.2 323.2 1.9 0.0 151 1697 18 46 11 18 49 00 1933+655 21 19 09 71.7 324.6 1.8 0.0 -18 1697 No stop 18 50 00 --- 21 20 09 71.6 324.4 1.8 0.0 42 1704 18 49 01 18 50 00 1927+654 21 20 09 71.1 323.0 1.9 0.0 -19 1704 No stop 18 53 00 --- 21 23 10 70.8 322.6 1.9 0.0 161 1727 18 50 01 18 53 00 1933+655 21 23 10 71.4 323.9 1.8 0.0 -18 1727 No stop 18 54 00 --- 21 24 10 71.3 323.7 1.8 0.0 42 1735 18 53 01 18 54 30 1927+654 21 24 40 70.7 322.4 2.0 0.0 11 1735 18 54 30 18 57 00 --- 21 27 11 70.4 322.0 2.0 0.0 150 1755 18 54 31 18 57 00 1933+655 21 27 11 71.0 323.3 1.9 0.0 -18 1755 No stop 18 58 00 --- 21 28 11 70.9 323.1 1.9 0.0 42 1762 18 57 01 Schedule for WSTRBORK (Code Wb ) Page 10 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 18 58 02 1927+654 21 28 13 70.3 321.9 2.0 0.0 -17 1762 No stop 19 00 50 --- 21 31 01 70.1 321.5 2.1 0.0 151 1784 18 58 01 19 00 50 1933+655 21 31 01 70.7 322.7 1.9 0.0 -18 1784 No stop 19 01 50 --- 21 32 01 70.6 322.6 2.0 0.0 42 1792 19 00 51 19 01 50 1927+654 21 32 01 70.0 321.4 2.1 0.0 -19 1792 No stop 19 04 50 --- 21 35 02 69.7 321.0 2.1 0.0 161 1815 19 01 51 19 04 50 1933+655 21 35 02 70.3 322.1 2.0 0.0 -18 1815 No stop 19 05 50 --- 21 36 02 70.2 322.0 2.0 0.0 42 1823 19 04 51 19 06 20 1927+654 21 36 32 69.6 320.9 2.2 0.0 11 1823 19 06 20 19 08 50 --- 21 39 02 69.3 320.6 2.2 0.0 150 1842 19 06 21 19 08 50 1933+655 21 39 02 69.9 321.6 2.1 0.0 -18 1842 No stop 19 09 50 --- 21 40 03 69.8 321.5 2.1 0.0 42 1850 19 08 51 19 09 52 1927+654 21 40 05 69.2 320.5 2.2 0.0 -17 1850 No stop 19 12 40 --- 21 42 53 69.0 320.2 2.3 0.0 151 1872 19 09 51 19 12 40 1933+655 21 42 53 69.5 321.2 2.1 0.0 -18 1872 No stop 19 13 40 --- 21 43 53 69.5 321.1 2.2 0.0 42 1879 19 12 41 19 13 40 1927+654 21 43 53 68.9 320.1 2.3 0.0 -19 1879 No stop 19 16 40 --- 21 46 54 68.6 319.8 2.3 0.0 161 1903 19 13 41 19 16 40 1933+655 21 46 54 69.2 320.7 2.2 0.0 -18 1903 No stop 19 17 40 --- 21 47 54 69.1 320.6 2.2 0.0 42 1910 19 16 41 19 18 10 1927+654 21 48 24 68.4 319.6 2.3 0.0 11 1910 19 18 10 19 20 40 --- 21 50 54 68.2 319.4 2.4 0.0 150 1930 19 18 11 19 20 40 1933+655 21 50 54 68.8 320.3 2.3 0.0 -18 1930 No stop 19 21 40 --- 21 51 55 68.7 320.2 2.3 0.0 42 1937 19 20 41 19 21 42 1927+654 21 51 57 68.1 319.3 2.4 0.0 -17 1937 No stop 19 24 30 --- 21 54 45 67.8 319.1 2.5 0.0 151 1959 19 21 41 19 24 30 1933+655 21 54 45 68.4 319.9 2.3 0.0 -18 1959 No stop 19 25 30 --- 21 55 45 68.3 319.9 2.4 0.0 42 1967 19 24 31 19 25 30 1927+654 21 55 45 67.7 319.0 2.5 0.0 -19 1967 No stop 19 28 30 --- 21 58 46 67.4 318.8 2.5 0.0 161 1990 19 25 31 Schedule for WSTRBORK (Code Wb ) Page 11 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 19 28 30 1933+655 21 58 46 68.0 319.6 2.4 0.0 -18 1990 No stop 19 29 30 --- 21 59 46 67.9 319.5 2.4 0.0 42 1998 19 28 31 19 30 00 1927+654 22 00 16 67.3 318.7 2.5 0.0 11 1998 19 30 00 19 32 30 --- 22 02 46 67.0 318.5 2.6 0.0 150 2017 19 30 01 19 32 30 1933+655 22 02 46 67.6 319.3 2.5 0.0 -18 2017 No stop 19 33 30 --- 22 03 47 67.5 319.2 2.5 0.0 42 2025 19 32 31 19 33 32 1927+654 22 03 49 66.9 318.4 2.6 0.0 -17 2025 No stop 19 36 20 --- 22 06 37 66.6 318.3 2.7 0.0 151 2047 19 33 31 19 36 20 1933+655 22 06 37 67.2 319.0 2.5 0.0 -18 2047 No stop 19 37 20 --- 22 07 37 67.2 318.9 2.6 0.0 42 2055 19 36 21 19 37 20 1927+654 22 07 37 66.5 318.2 2.7 0.0 -19 2055 No stop 19 40 20 --- 22 10 38 66.2 318.0 2.7 0.0 161 2078 19 37 21 19 40 20 1933+655 22 10 38 66.9 318.7 2.6 0.0 -18 2078 No stop 19 41 20 --- 22 11 38 66.8 318.6 2.6 0.0 42 2086 19 40 21 19 41 50 1927+654 22 12 08 66.1 318.0 2.7 0.0 11 2086 19 41 50 19 44 20 --- 22 14 38 65.8 317.8 2.8 0.0 150 2105 19 41 51 19 44 20 1933+655 22 14 38 66.5 318.4 2.7 0.0 -18 2105 No stop 19 45 20 --- 22 15 38 66.4 318.4 2.7 0.0 42 2113 19 44 21 19 45 22 1927+654 22 15 40 65.7 317.8 2.8 0.0 -17 2113 No stop 19 48 10 --- 22 18 29 65.4 317.6 2.9 0.0 151 2135 19 45 21 19 48 10 1933+655 22 18 29 66.1 318.2 2.7 0.0 -18 2135 No stop 19 49 10 --- 22 19 29 66.0 318.2 2.8 0.0 42 2142 19 48 11 19 49 10 1927+654 22 19 29 65.3 317.6 2.9 0.0 -19 2142 No stop 19 52 10 --- 22 22 30 65.0 317.5 2.9 0.0 161 2165 19 49 11 19 52 10 1933+655 22 22 30 65.7 318.0 2.8 0.0 -18 2165 No stop 19 53 10 --- 22 23 30 65.6 318.0 2.8 0.0 42 2173 19 52 11 19 53 40 1927+654 22 24 00 64.9 317.4 2.9 0.0 11 2173 19 53 40 19 56 10 --- 22 26 30 64.6 317.3 3.0 0.0 150 2193 19 53 41 19 56 10 1933+655 22 26 30 65.3 317.8 2.9 0.0 -18 2193 No stop 19 57 10 --- 22 27 30 65.2 317.8 2.9 0.0 42 2200 19 56 11 Schedule for WSTRBORK (Code Wb ) Page 12 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 19 57 12 1927+654 22 27 32 64.5 317.3 3.0 0.0 -17 2200 No stop 20 00 00 --- 22 30 21 64.2 317.2 3.0 0.0 151 2222 19 57 11 20 00 00 1933+655 22 30 21 64.9 317.7 2.9 0.0 -18 2222 No stop 20 01 00 --- 22 31 21 64.8 317.6 3.0 0.0 42 2230 20 00 01 20 01 00 1927+654 22 31 21 64.1 317.2 3.1 0.0 -19 2230 No stop 20 04 00 --- 22 34 22 63.8 317.1 3.1 0.0 161 2253 20 01 01 20 04 00 1933+655 22 34 22 64.5 317.5 3.0 0.0 -18 2253 No stop 20 05 00 --- 22 35 22 64.4 317.5 3.0 0.0 42 2261 20 04 01 20 05 30 1927+654 22 35 52 63.6 317.1 3.1 0.0 11 2261 20 05 30 20 08 00 --- 22 38 22 63.4 317.0 3.2 0.0 150 2280 20 05 31 20 08 00 1933+655 22 38 22 64.1 317.4 3.1 0.0 -18 2280 No stop 20 09 00 --- 22 39 22 63.9 317.4 3.1 0.0 42 2288 20 08 01 20 09 02 1927+654 22 39 24 63.3 317.0 3.2 0.0 -17 2288 No stop 20 11 50 --- 22 42 13 63.0 316.9 3.2 0.0 151 2310 20 09 01 20 11 50 1933+655 22 42 13 63.7 317.3 3.1 0.0 -18 2310 No stop 20 12 50 --- 22 43 13 63.6 317.3 3.2 0.0 42 2317 20 11 51 20 12 50 1927+654 22 43 13 62.9 316.9 3.3 0.0 -19 2317 No stop 20 15 50 --- 22 46 13 62.6 316.9 3.3 0.0 161 2341 20 12 51 20 15 50 1933+655 22 46 13 63.2 317.2 3.2 0.0 -18 2341 No stop 20 16 50 --- 22 47 14 63.1 317.2 3.2 0.0 42 2348 20 15 51 20 17 20 1927+654 22 47 44 62.4 316.9 3.3 0.0 11 2348 20 17 20 20 19 50 --- 22 50 14 62.2 316.8 3.4 0.0 150 2368 20 17 21 20 19 50 1933+655 22 50 14 62.8 317.2 3.3 0.0 -18 2368 No stop 20 20 50 --- 22 51 14 62.7 317.1 3.3 0.0 42 2375 20 19 51 20 20 52 1927+654 22 51 16 62.1 316.8 3.4 0.0 -17 2375 No stop 20 23 40 --- 22 54 05 61.8 316.8 3.4 0.0 151 2397 20 20 51 20 23 40 1933+655 22 54 05 62.4 317.1 3.3 0.0 -18 2397 No stop 20 24 40 --- 22 55 05 62.3 317.1 3.3 0.0 42 2405 20 23 41 20 24 40 1927+654 22 55 05 61.7 316.8 3.5 0.0 -19 2405 No stop 20 27 40 --- 22 58 05 61.4 316.8 3.5 0.0 161 2428 20 24 41 Schedule for WSTRBORK (Code Wb ) Page 13 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 20 27 40 1933+655 22 58 05 62.0 317.1 3.4 0.0 -18 2428 No stop 20 28 40 --- 22 59 06 61.9 317.1 3.4 0.0 42 2436 20 27 41 20 29 10 1927+654 22 59 36 61.2 316.8 3.5 0.0 11 2436 20 29 10 20 31 40 --- 23 02 06 60.9 316.8 3.6 0.0 150 2455 20 29 11 20 31 40 1933+655 23 02 06 61.6 317.0 3.5 0.0 -18 2455 No stop 20 32 40 --- 23 03 06 61.5 317.0 3.5 0.0 42 2463 20 31 41 20 32 42 1927+654 23 03 08 60.8 316.8 3.6 0.0 -17 2463 No stop 20 35 30 --- 23 05 57 60.5 316.8 3.6 0.0 151 2485 20 32 41 20 35 30 1933+655 23 05 57 61.2 317.0 3.5 0.0 -18 2485 No stop 20 36 30 --- 23 06 57 61.1 317.0 3.5 0.0 42 2493 20 35 31 20 36 30 1927+654 23 06 57 60.4 316.8 3.7 0.0 -19 2493 No stop 20 39 30 --- 23 09 57 60.1 316.8 3.7 0.0 161 2516 20 36 31 20 39 30 1933+655 23 09 57 60.8 317.0 3.6 0.0 -18 2516 No stop 20 40 30 --- 23 10 58 60.7 317.0 3.6 0.0 42 2524 20 39 31 20 41 00 1927+654 23 11 28 60.0 316.8 3.7 0.0 11 2524 20 41 00 20 43 30 --- 23 13 58 59.7 316.9 3.8 0.0 150 2543 20 41 01 20 43 30 1933+655 23 13 58 60.4 317.0 3.7 0.0 -18 2543 No stop 20 44 30 --- 23 14 58 60.3 317.0 3.7 0.0 42 2551 20 43 31 20 44 32 1927+654 23 15 00 59.6 316.9 3.8 0.0 -17 2551 No stop 20 47 20 --- 23 17 49 59.3 316.9 3.8 0.0 151 2573 20 44 31 20 47 20 1933+655 23 17 49 60.0 317.1 3.7 0.0 -18 2573 No stop 20 48 20 --- 23 18 49 59.9 317.1 3.7 0.0 42 2580 20 47 21 20 48 20 1927+654 23 18 49 59.2 316.9 3.9 0.0 -19 2580 No stop 20 51 20 --- 23 21 49 58.9 317.0 3.9 0.0 161 2603 20 48 21 20 51 20 1933+655 23 21 49 59.6 317.1 3.8 0.0 -18 2603 No stop 20 52 20 --- 23 22 49 59.5 317.1 3.8 0.0 42 2611 20 51 21 20 52 50 1927+654 23 23 20 58.8 317.0 3.9 0.0 11 2611 20 52 50 20 55 20 --- 23 25 50 58.5 317.1 4.0 0.0 150 2630 20 52 51 20 55 20 1933+655 23 25 50 59.2 317.2 3.9 0.0 -18 2630 No stop 20 56 20 --- 23 26 50 59.1 317.2 3.9 0.0 42 2638 20 55 21 Schedule for WSTRBORK (Code Wb ) Page 14 CLAGN 1ES 1927+654 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 22 Oct 2023 Day 295 --- 20 56 22 1927+654 23 26 52 58.4 317.1 4.0 0.0 -17 2638 No stop 20 59 10 --- 23 29 41 58.1 317.1 4.0 0.0 151 2660 20 56 21 20 59 10 1933+655 23 29 41 58.8 317.2 3.9 0.0 -18 2660 No stop 21 00 10 --- 23 30 41 58.7 317.2 3.9 0.0 42 2668 20 59 11 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess323.X2048 --- 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: 8 Station: WSTRBORK Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 8012.00 8012.00 8012.00 8012.00 8012.00 8012.00 8012.00 8012.00 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 1 Setup file default. Used with PCAL = off LO sum= 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 BBC fr= 371.49 371.49 371.49 371.49 435.49 435.49 435.49 435.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 1 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 1927+654 19 27 01.925575 * 19 27 19.540000 19 27 26.617876 0.00 65 27 42.27538 * 65 33 54.31000 65 37 02.97255 0.00 From catalog imbedded in main SCHED input file. * 1933+655 19 33 38.733765 * 19 33 57.337278 19 34 04.921840 0.22 J1933+6540 65 33 38.07675 * 65 40 16.82831 65 43 38.32745 0.09 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 273 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 1927+654 sess323.X2048 1 2 3 4 5 6 7 8 9 4.103 128.359 1933+655 sess323.X2048 1 2 3 4 5 6 7 8 9 1.633 40.774 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) 1927+654 98.0 1933+655 98.7 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