COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: Resolving a gravitationally lensed dual back-hole system at z = 2.37 Exp. Code: em153b Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: John McKean Address: ASTRON Postbus 2 7990 AA, Dwingeloo the Netherlands Phone: +31 521 595 780 EMAIL: mckean@astron.nl Fax: +31 521 595 101 Phone during observation: +31 624 328 991 Observing mode: 18cm 1024-8-2 Notes: Schedule for ZELENCHK (Code Zc ) Page 2 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 366.49 366.49 366.49 366.49 430.49 430.49 430.49 430.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 18 00 00 J1639+8631 13 39 51 46.3 363.5 -2.9 -134.1 0 0 18 00 00 18 01 30 =1654+866 13 41 21 46.3 363.5 -2.9 -134.5 90 12 18 00 01 18 01 30 PSJ1721+8842 13 41 21 44.6 361.4 -3.4 -128.4 -18 12 No stop 18 04 55 --- 13 44 47 44.6 361.4 -3.3 -129.3 187 38 18 01 31 18 05 40 J1639+8631 13 45 32 46.3 363.4 -2.8 -135.6 27 38 18 05 40 18 07 05 =1654+866 13 46 57 46.4 363.4 -2.8 -135.9 85 49 18 05 41 18 07 05 PSJ1721+8842 13 46 57 44.6 361.4 -3.3 -129.8 -18 49 No stop 18 10 30 --- 13 50 23 44.7 361.4 -3.2 -130.7 187 75 18 07 06 18 10 30 J1639+8631 13 50 23 46.4 363.3 -2.7 -136.8 -17 75 No stop 18 12 00 =1654+866 13 51 53 46.4 363.3 -2.7 -137.2 73 87 18 10 31 18 12 00 PSJ1721+8842 13 51 53 44.7 361.4 -3.2 -131.1 -17 87 No stop 18 15 25 --- 13 55 19 44.7 361.4 -3.1 -132.0 188 113 18 12 01 18 16 10 J1639+8631 13 56 04 46.5 363.2 -2.6 -138.3 28 113 18 16 10 18 17 35 =1654+866 13 57 29 46.5 363.2 -2.6 -138.7 85 124 18 16 11 18 17 35 PSJ1721+8842 13 57 29 44.7 361.3 -3.1 -132.5 -17 124 No stop 18 21 00 --- 14 00 55 44.7 361.3 -3.0 -133.4 188 150 18 17 36 18 21 00 J1639+8631 14 00 55 46.5 363.2 -2.5 -139.6 -17 150 No stop 18 22 30 =1654+866 14 02 25 46.5 363.1 -2.5 -140.0 73 162 18 21 01 18 22 30 PSJ1721+8842 14 02 25 44.7 361.3 -3.0 -133.8 -17 162 No stop 18 25 55 --- 14 05 50 44.7 361.3 -3.0 -134.6 188 188 18 22 31 18 26 40 J1639+8631 14 06 35 46.6 363.1 -2.5 -141.1 28 188 18 26 40 18 28 05 =1654+866 14 08 01 46.6 363.0 -2.4 -141.4 85 199 18 26 41 18 28 05 PSJ1721+8842 14 08 01 44.7 361.3 -2.9 -135.2 -17 199 No stop 18 31 30 --- 14 11 26 44.7 361.3 -2.9 -136.1 188 225 18 28 06 18 31 30 J1639+8631 14 11 26 46.6 363.0 -2.4 -142.3 -17 225 No stop 18 33 00 =1654+866 14 12 57 46.6 362.9 -2.3 -142.7 73 237 18 31 31 18 33 00 PSJ1721+8842 14 12 57 44.8 361.3 -2.8 -136.4 -17 237 No stop 18 36 25 --- 14 16 22 44.8 361.2 -2.8 -137.3 188 263 18 33 01 Schedule for ZELENCHK (Code Zc ) Page 3 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 18 37 10 J1639+8631 14 17 07 46.7 362.9 -2.3 -143.8 28 263 18 37 10 18 38 35 =1654+866 14 18 32 46.7 362.8 -2.3 -144.2 85 274 18 37 11 18 38 35 PSJ1721+8842 14 18 32 44.8 361.2 -2.8 -137.9 -17 274 No stop 18 42 00 --- 14 21 58 44.8 361.2 -2.7 -138.7 188 300 18 38 36 18 42 00 J1639+8631 14 21 58 46.7 362.8 -2.2 -145.1 -17 300 No stop 18 43 30 =1654+866 14 23 28 46.7 362.8 -2.2 -145.5 73 312 18 42 01 18 43 30 PSJ1721+8842 14 23 28 44.8 361.2 -2.7 -139.1 -17 312 No stop 18 46 55 --- 14 26 54 44.8 361.2 -2.6 -140.0 188 338 18 43 31 18 47 40 J1639+8631 14 27 39 46.8 362.7 -2.1 -146.6 28 338 18 47 40 18 49 05 =1654+866 14 29 04 46.8 362.7 -2.1 -147.0 85 349 18 47 41 18 49 05 PSJ1721+8842 14 29 04 44.8 361.2 -2.6 -140.5 -17 349 No stop 18 52 30 --- 14 32 30 44.8 361.1 -2.5 -141.4 188 375 18 49 06 18 52 30 J1639+8631 14 32 30 46.8 362.6 -2.0 -147.9 -18 375 No stop 18 54 00 =1654+866 14 34 00 46.8 362.6 -2.0 -148.3 72 387 18 52 31 18 54 00 PSJ1721+8842 14 34 00 44.8 361.1 -2.5 -141.8 -18 387 No stop 18 57 25 --- 14 37 26 44.8 361.1 -2.4 -142.7 187 413 18 54 01 18 58 10 J1639+8631 14 38 11 46.8 362.5 -1.9 -149.4 27 413 18 58 10 18 59 35 =1654+866 14 39 36 46.8 362.5 -1.9 -149.7 85 424 18 58 11 18 59 35 PSJ1721+8842 14 39 36 44.8 361.1 -2.4 -143.2 -18 424 No stop 19 03 00 --- 14 43 01 44.9 361.1 -2.3 -144.1 187 450 18 59 36 19 03 00 J1639+8631 14 43 01 46.9 362.4 -1.8 -150.6 -18 450 No stop 19 04 30 =1654+866 14 44 32 46.9 362.4 -1.8 -151.0 72 462 19 03 01 19 04 30 PSJ1721+8842 14 44 32 44.9 361.1 -2.3 -144.5 -18 462 No stop 19 07 55 --- 14 47 57 44.9 361.0 -2.3 -145.3 187 488 19 04 31 19 08 40 J1639+8631 14 48 42 46.9 362.3 -1.7 -152.1 27 488 19 08 40 19 10 05 =1654+866 14 50 08 46.9 362.2 -1.7 -152.5 85 499 19 08 41 19 10 05 PSJ1721+8842 14 50 08 44.9 361.0 -2.2 -145.9 -18 499 No stop 19 13 30 --- 14 53 33 44.9 361.0 -2.2 -146.8 187 525 19 10 06 19 13 30 J1639+8631 14 53 33 46.9 362.2 -1.7 -153.4 -18 525 No stop 19 15 00 =1654+866 14 55 03 47.0 362.1 -1.6 -153.8 72 537 19 13 31 Schedule for ZELENCHK (Code Zc ) Page 4 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 19 15 00 PSJ1721+8842 14 55 03 44.9 361.0 -2.1 -147.2 -18 537 No stop 19 18 25 --- 14 58 29 44.9 361.0 -2.1 -148.0 187 563 19 15 01 19 19 10 J1639+8631 14 59 14 47.0 362.1 -1.6 -154.9 27 563 19 19 10 19 20 35 =1654+866 15 00 39 47.0 362.0 -1.6 -155.3 85 574 19 19 11 19 20 35 PSJ1721+8842 15 00 39 44.9 361.0 -2.1 -148.6 -18 574 No stop 19 24 00 --- 15 04 05 44.9 360.9 -2.0 -149.5 187 600 19 20 36 19 24 00 J1639+8631 15 04 05 47.0 362.0 -1.5 -156.2 -18 600 No stop 19 25 30 =1654+866 15 05 35 47.0 361.9 -1.5 -156.6 72 612 19 24 01 19 30 30 3C345 15 10 36 72.2 455.0 -1.6 -69.3 183 612 19 30 30 19 35 30 --- 15 15 37 73.1 456.2 -1.5 -69.0 300 650 19 30 31 19 40 30 J1639+8631 15 20 38 47.1 361.6 -1.2 -160.6 180 650 19 40 30 19 45 30 =1654+866 15 25 38 47.1 361.5 -1.1 -161.9 300 688 19 40 31 19 45 30 PSJ1721+8842 15 25 38 45.0 360.8 -1.6 -155.0 -18 688 No stop 19 48 55 --- 15 29 04 45.0 360.7 -1.6 -155.8 187 715 19 45 31 19 49 40 J1639+8631 15 29 49 47.2 361.4 -1.1 -163.0 27 715 19 49 40 19 51 05 =1654+866 15 31 14 47.2 361.4 -1.0 -163.4 85 726 19 49 41 19 51 05 PSJ1721+8842 15 31 14 45.0 360.7 -1.5 -156.4 -18 726 No stop 19 54 30 --- 15 34 40 45.0 360.7 -1.5 -157.3 187 752 19 51 06 19 54 30 J1639+8631 15 34 40 47.2 361.3 -1.0 -164.3 -18 752 No stop 19 56 00 =1654+866 15 36 10 47.2 361.3 -1.0 -164.7 72 763 19 54 31 19 56 00 PSJ1721+8842 15 36 10 45.0 360.7 -1.5 -157.6 -18 763 No stop 19 59 25 --- 15 39 36 45.0 360.7 -1.4 -158.5 187 790 19 56 01 20 00 10 J1639+8631 15 40 21 47.2 361.2 -0.9 -165.8 27 790 20 00 10 20 01 35 =1654+866 15 41 46 47.2 361.2 -0.9 -166.2 85 801 20 00 11 20 01 35 PSJ1721+8842 15 41 46 45.0 360.7 -1.4 -159.1 -18 801 No stop 20 05 00 --- 15 45 12 45.0 360.6 -1.3 -159.9 187 827 20 01 36 20 05 00 J1639+8631 15 45 12 47.2 361.1 -0.8 -167.1 -18 827 No stop 20 06 30 =1654+866 15 46 42 47.2 361.1 -0.8 -167.5 72 838 20 05 01 20 06 30 PSJ1721+8842 15 46 42 45.0 360.6 -1.3 -160.3 -18 838 No stop 20 09 55 --- 15 50 07 45.0 360.6 -1.2 -161.2 187 865 20 06 31 Schedule for ZELENCHK (Code Zc ) Page 5 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 20 10 40 J1639+8631 15 50 53 47.2 361.0 -0.7 -168.6 27 865 20 10 40 20 12 05 =1654+866 15 52 18 47.2 360.9 -0.7 -169.0 85 876 20 10 41 20 12 05 PSJ1721+8842 15 52 18 45.0 360.6 -1.2 -161.8 -18 876 No stop 20 15 30 --- 15 55 43 45.0 360.5 -1.1 -162.6 187 902 20 12 06 20 15 30 J1639+8631 15 55 43 47.2 360.9 -0.6 -169.9 -18 902 No stop 20 17 00 =1654+866 15 57 14 47.3 360.8 -0.6 -170.3 72 913 20 15 31 20 17 00 PSJ1721+8842 15 57 14 45.1 360.5 -1.1 -163.0 -18 913 No stop 20 20 25 --- 16 00 39 45.1 360.5 -1.1 -163.9 187 940 20 17 01 20 21 10 J1639+8631 16 01 24 47.3 360.7 -0.5 -171.4 27 940 20 21 10 20 22 35 =1654+866 16 02 50 47.3 360.7 -0.5 -171.8 85 951 20 21 11 20 22 35 PSJ1721+8842 16 02 50 45.1 360.5 -1.0 -164.4 -18 951 No stop 20 26 00 --- 16 06 15 45.1 360.5 -1.0 -165.3 187 977 20 22 36 20 26 00 J1639+8631 16 06 15 47.3 360.6 -0.5 -172.7 -18 977 No stop 20 27 30 =1654+866 16 07 45 47.3 360.6 -0.4 -173.1 72 988 20 26 01 20 27 30 PSJ1721+8842 16 07 45 45.1 360.5 -0.9 -165.7 -18 988 No stop 20 30 55 --- 16 11 11 45.1 360.4 -0.9 -166.6 187 1015 20 27 31 20 31 40 J1639+8631 16 11 56 47.3 360.5 -0.4 -174.2 27 1015 20 31 40 20 33 05 =1654+866 16 13 21 47.3 360.5 -0.3 -174.6 85 1026 20 31 41 20 33 05 PSJ1721+8842 16 13 21 45.1 360.4 -0.8 -167.1 -18 1026 No stop 20 36 30 --- 16 16 47 45.1 360.4 -0.8 -168.0 187 1052 20 33 06 20 36 30 J1639+8631 16 16 47 47.3 360.4 -0.3 -175.5 -18 1052 No stop 20 38 00 =1654+866 16 18 17 47.3 360.3 -0.3 -175.9 72 1063 20 36 31 20 38 00 PSJ1721+8842 16 18 17 45.1 360.4 -0.8 -168.4 -18 1063 No stop 20 41 25 --- 16 21 43 45.1 360.3 -0.7 -169.3 187 1090 20 38 01 20 42 10 J1639+8631 16 22 28 47.3 360.3 -0.2 -177.0 27 1090 20 42 10 20 43 35 =1654+866 16 23 53 47.3 360.2 -0.2 -177.4 85 1101 20 42 11 20 43 35 PSJ1721+8842 16 23 53 45.1 360.3 -0.7 -169.8 -18 1101 No stop 20 47 00 --- 16 27 19 45.1 360.3 -0.6 -170.7 187 1127 20 43 36 20 47 00 J1639+8631 16 27 19 47.3 360.1 -0.1 -178.3 -18 1127 No stop 20 48 30 =1654+866 16 28 49 47.3 360.1 -0.1 -178.7 72 1138 20 47 01 Schedule for ZELENCHK (Code Zc ) Page 6 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 20 48 30 PSJ1721+8842 16 28 49 45.1 360.3 -0.6 -171.1 -18 1138 No stop 20 51 55 --- 16 32 14 45.1 360.3 -0.5 -172.0 187 1165 20 48 31 20 52 40 J1639+8631 16 32 59 47.3 360.0 -0.0 -179.8 27 1165 20 52 40 20 54 05 =1654+866 16 34 25 47.3 360.0 0.0 179.8 85 1176 20 52 41 20 54 05 PSJ1721+8842 16 34 25 45.1 360.2 -0.5 -172.5 -18 1176 No stop 20 57 30 --- 16 37 50 45.1 360.2 -0.4 -173.4 187 1202 20 54 06 20 57 30 J1639+8631 16 37 50 47.3 359.9 0.1 178.9 -18 1202 No stop 20 59 00 =1654+866 16 39 20 47.3 359.9 0.1 178.5 72 1213 20 57 31 20 59 00 PSJ1721+8842 16 39 20 45.1 360.2 -0.4 -173.8 -18 1213 No stop 21 02 25 --- 16 42 46 45.1 360.2 -0.3 -174.7 187 1240 20 59 01 21 03 10 J1639+8631 16 43 31 47.3 359.8 0.2 177.4 27 1240 21 03 10 21 04 35 =1654+866 16 44 56 47.3 359.7 0.2 177.0 85 1251 21 03 11 21 04 35 PSJ1721+8842 16 44 56 45.1 360.2 -0.3 -175.2 -18 1251 No stop 21 08 00 --- 16 48 22 45.1 360.1 -0.3 -176.1 187 1277 21 04 36 21 08 00 J1639+8631 16 48 22 47.3 359.7 0.2 176.1 -18 1277 No stop 21 09 30 =1654+866 16 49 52 47.3 359.6 0.3 175.7 72 1288 21 08 01 21 09 30 PSJ1721+8842 16 49 52 45.1 360.1 -0.2 -176.5 -18 1288 No stop 21 12 55 --- 16 53 18 45.1 360.1 -0.2 -177.4 187 1315 21 09 31 21 13 40 J1639+8631 16 54 03 47.3 359.5 0.3 174.6 27 1315 21 13 40 21 15 05 =1654+866 16 55 28 47.3 359.5 0.4 174.2 85 1326 21 13 41 21 15 05 PSJ1721+8842 16 55 28 45.1 360.1 -0.1 -177.9 -18 1326 No stop 21 18 30 --- 16 58 54 45.1 360.0 -0.1 -178.8 187 1352 21 15 06 21 18 30 J1639+8631 16 58 54 47.3 359.4 0.4 173.3 -18 1352 No stop 21 20 00 =1654+866 17 00 24 47.3 359.4 0.4 172.9 72 1363 21 18 31 21 20 00 PSJ1721+8842 17 00 24 45.1 360.0 -0.1 -179.2 -18 1363 No stop 21 23 25 --- 17 03 50 45.1 360.0 0.0 180.0 187 1390 21 20 01 21 24 10 J1639+8631 17 04 35 47.3 359.3 0.5 171.8 27 1390 21 24 10 21 25 35 =1654+866 17 06 00 47.3 359.3 0.5 171.4 85 1401 21 24 11 21 25 35 PSJ1721+8842 17 06 00 45.1 360.0 0.0 179.4 -18 1401 No stop 21 29 00 --- 17 09 25 45.1 360.0 0.1 178.5 187 1427 21 25 36 Schedule for ZELENCHK (Code Zc ) Page 7 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 21 29 00 J1639+8631 17 09 25 47.3 359.2 0.6 170.5 -18 1427 No stop 21 30 30 =1654+866 17 10 56 47.2 359.2 0.6 170.1 72 1438 21 29 01 21 30 30 PSJ1721+8842 17 10 56 45.1 359.9 0.1 178.1 -18 1438 No stop 21 33 55 --- 17 14 21 45.1 359.9 0.2 177.3 187 1465 21 30 31 21 34 40 J1639+8631 17 15 06 47.2 359.1 0.7 169.0 27 1465 21 34 40 21 36 05 =1654+866 17 16 32 47.2 359.0 0.7 168.6 85 1476 21 34 41 21 36 05 PSJ1721+8842 17 16 32 45.1 359.9 0.2 176.7 -18 1476 No stop 21 39 30 --- 17 19 57 45.1 359.9 0.3 175.8 187 1502 21 36 06 21 39 30 J1639+8631 17 19 57 47.2 359.0 0.8 167.7 -18 1502 No stop 21 41 00 =1654+866 17 21 27 47.2 358.9 0.8 167.3 72 1513 21 39 31 21 41 00 PSJ1721+8842 17 21 27 45.1 359.9 0.3 175.4 -18 1513 No stop 21 44 25 --- 17 24 53 45.1 359.8 0.4 174.6 187 1540 21 41 01 21 45 10 J1639+8631 17 25 38 47.2 358.8 0.9 166.2 27 1540 21 45 10 21 46 35 =1654+866 17 27 03 47.2 358.8 0.9 165.8 85 1551 21 45 11 21 46 35 PSJ1721+8842 17 27 03 45.1 359.8 0.4 174.0 -18 1551 No stop 21 50 00 --- 17 30 29 45.1 359.8 0.4 173.1 187 1577 21 46 36 21 50 00 J1639+8631 17 30 29 47.2 358.7 0.9 164.9 -18 1577 No stop 21 51 30 =1654+866 17 31 59 47.2 358.7 1.0 164.5 72 1588 21 50 01 21 51 30 PSJ1721+8842 17 31 59 45.1 359.8 0.5 172.8 -18 1588 No stop 21 54 55 --- 17 35 25 45.1 359.7 0.5 171.9 187 1615 21 51 31 21 55 40 J1639+8631 17 36 10 47.2 358.6 1.0 163.4 27 1615 21 55 40 21 57 05 =1654+866 17 37 35 47.2 358.6 1.1 163.0 85 1626 21 55 41 21 57 05 PSJ1721+8842 17 37 35 45.1 359.7 0.6 171.3 -18 1626 No stop 22 00 30 --- 17 41 01 45.1 359.7 0.6 170.4 187 1652 21 57 06 22 00 30 J1639+8631 17 41 01 47.1 358.5 1.1 162.1 -18 1652 No stop 22 02 00 =1654+866 17 42 31 47.1 358.5 1.1 161.7 72 1663 22 00 31 22 02 00 PSJ1721+8842 17 42 31 45.1 359.7 0.6 170.1 -18 1663 No stop 22 05 25 --- 17 45 56 45.1 359.7 0.7 169.2 187 1690 22 02 01 22 06 10 J1639+8631 17 46 42 47.1 358.4 1.2 160.6 27 1690 22 06 10 22 07 35 =1654+866 17 48 07 47.1 358.4 1.2 160.2 85 1701 22 06 11 Schedule for ZELENCHK (Code Zc ) Page 8 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 22 07 35 PSJ1721+8842 17 48 07 45.1 359.6 0.7 168.6 -18 1701 No stop 22 11 00 --- 17 51 32 45.1 359.6 0.8 167.8 187 1727 22 07 36 22 11 00 J1639+8631 17 51 32 47.1 358.3 1.3 159.3 -18 1727 No stop 22 12 30 =1654+866 17 53 03 47.1 358.3 1.3 158.9 72 1738 22 11 01 22 12 30 PSJ1721+8842 17 53 03 45.1 359.6 0.8 167.4 -18 1738 No stop 22 15 55 --- 17 56 28 45.1 359.6 0.9 166.5 187 1765 22 12 31 22 16 40 J1639+8631 17 57 13 47.1 358.2 1.4 157.8 27 1765 22 16 40 22 18 05 =1654+866 17 58 38 47.0 358.1 1.4 157.4 85 1776 22 16 41 22 18 05 PSJ1721+8842 17 58 38 45.1 359.6 0.9 165.9 -18 1776 No stop 22 21 30 --- 18 02 04 45.1 359.5 1.0 165.1 187 1802 22 18 06 22 21 30 J1639+8631 18 02 04 47.0 358.1 1.5 156.5 -18 1802 No stop 22 23 00 =1654+866 18 03 34 47.0 358.0 1.5 156.1 72 1813 22 21 31 22 23 00 PSJ1721+8842 18 03 34 45.1 359.5 1.0 164.7 -18 1813 No stop 22 26 25 --- 18 07 00 45.1 359.5 1.1 163.8 187 1840 22 23 01 22 27 10 J1639+8631 18 07 45 47.0 357.9 1.6 155.0 28 1840 22 27 10 22 28 35 =1654+866 18 09 10 47.0 357.9 1.6 154.6 85 1851 22 27 11 22 28 35 PSJ1721+8842 18 09 10 45.1 359.5 1.1 163.3 -17 1851 No stop 22 32 00 --- 18 12 36 45.0 359.4 1.1 162.4 188 1877 22 28 36 22 32 00 J1639+8631 18 12 36 47.0 357.8 1.6 153.7 -17 1877 No stop 22 33 30 =1654+866 18 14 06 46.9 357.8 1.7 153.3 73 1888 22 32 01 22 33 30 PSJ1721+8842 18 14 06 45.0 359.4 1.2 162.0 -17 1888 No stop 22 36 55 --- 18 17 32 45.0 359.4 1.2 161.1 188 1915 22 33 31 22 37 40 J1639+8631 18 18 17 46.9 357.7 1.7 152.2 28 1915 22 37 40 22 39 05 =1654+866 18 19 42 46.9 357.7 1.8 151.9 85 1926 22 37 41 22 39 05 PSJ1721+8842 18 19 42 45.0 359.4 1.3 160.6 -17 1926 No stop 22 42 30 --- 18 23 07 45.0 359.4 1.3 159.7 188 1952 22 39 06 22 42 30 J1639+8631 18 23 07 46.9 357.6 1.8 151.0 -17 1952 No stop 22 44 00 =1654+866 18 24 38 46.9 357.6 1.8 150.6 73 1963 22 42 31 22 44 00 PSJ1721+8842 18 24 38 45.0 359.4 1.3 159.3 -17 1963 No stop 22 47 25 --- 18 28 03 45.0 359.3 1.4 158.4 188 1990 22 44 01 Schedule for ZELENCHK (Code Zc ) Page 9 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 22 48 10 J1639+8631 18 28 48 46.8 357.5 1.9 149.5 28 1990 22 48 10 22 49 35 =1654+866 18 30 14 46.8 357.5 1.9 149.1 85 2001 22 48 11 22 49 35 PSJ1721+8842 18 30 14 45.0 359.3 1.4 157.9 -17 2001 No stop 22 53 00 --- 18 33 39 45.0 359.3 1.5 157.0 188 2027 22 49 36 22 53 00 J1639+8631 18 33 39 46.8 357.4 2.0 148.2 -17 2027 No stop 22 54 30 =1654+866 18 35 09 46.8 357.4 2.0 147.8 73 2038 22 53 01 22 54 30 PSJ1721+8842 18 35 09 45.0 359.3 1.5 156.6 -17 2038 No stop 22 57 55 --- 18 38 35 45.0 359.2 1.6 155.7 188 2065 22 54 31 22 58 40 J1639+8631 18 39 20 46.8 357.3 2.1 146.7 28 2065 22 58 40 23 00 05 =1654+866 18 40 45 46.7 357.3 2.1 146.3 85 2076 22 58 41 23 00 05 PSJ1721+8842 18 40 45 45.0 359.2 1.6 155.2 -17 2076 No stop 23 03 30 --- 18 44 11 45.0 359.2 1.7 154.3 188 2102 23 00 06 23 03 30 J1639+8631 18 44 11 46.7 357.2 2.2 145.4 -18 2102 No stop 23 05 00 =1654+866 18 45 41 46.7 357.2 2.2 145.0 72 2113 23 03 31 23 05 00 PSJ1721+8842 18 45 41 45.0 359.2 1.7 153.9 -18 2113 No stop 23 08 25 --- 18 49 07 45.0 359.2 1.8 153.1 187 2140 23 05 01 23 09 10 J1639+8631 18 49 52 46.7 357.1 2.3 143.9 27 2140 23 09 10 23 10 35 =1654+866 18 51 17 46.6 357.1 2.3 143.5 85 2151 23 09 11 23 10 35 PSJ1721+8842 18 51 17 45.0 359.2 1.8 152.5 -18 2151 No stop 23 14 00 --- 18 54 43 45.0 359.1 1.9 151.6 187 2177 23 10 36 23 14 00 J1639+8631 18 54 43 46.6 357.1 2.4 142.6 -18 2177 No stop 23 15 30 =1654+866 18 56 13 46.6 357.0 2.4 142.3 72 2188 23 14 01 23 15 30 PSJ1721+8842 18 56 13 44.9 359.1 1.9 151.2 -18 2188 No stop 23 18 55 --- 18 59 38 44.9 359.1 1.9 150.4 187 2215 23 15 31 23 19 40 J1639+8631 19 00 24 46.6 357.0 2.4 141.2 27 2215 23 19 40 23 21 05 =1654+866 19 01 49 46.6 356.9 2.5 140.8 85 2226 23 19 41 23 21 05 PSJ1721+8842 19 01 49 44.9 359.1 2.0 149.8 -18 2226 No stop 23 24 30 --- 19 05 14 44.9 359.1 2.0 148.9 187 2252 23 21 06 23 24 30 J1639+8631 19 05 14 46.5 356.9 2.5 139.9 -18 2252 No stop 23 26 00 =1654+866 19 06 45 46.5 356.8 2.6 139.5 72 2263 23 24 31 Schedule for ZELENCHK (Code Zc ) Page 10 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 4 Jun 2021 Day 155 --- 23 26 00 PSJ1721+8842 19 06 45 44.9 359.0 2.1 148.6 -18 2263 No stop 23 29 25 --- 19 10 10 44.9 359.0 2.1 147.7 187 2290 23 26 01 23 30 10 J1639+8631 19 10 55 46.5 356.8 2.6 138.4 27 2290 23 30 10 23 31 35 =1654+866 19 12 21 46.4 356.7 2.6 138.0 85 2301 23 30 11 23 31 35 PSJ1721+8842 19 12 21 44.9 359.0 2.1 147.1 -18 2301 No stop 23 35 00 --- 19 15 46 44.9 359.0 2.2 146.3 187 2327 23 31 36 23 35 00 J1639+8631 19 15 46 46.4 356.7 2.7 137.1 -19 2327 No stop 23 36 30 =1654+866 19 17 16 46.4 356.7 2.7 136.7 71 2338 23 35 01 23 36 30 PSJ1721+8842 19 17 16 44.9 359.0 2.2 145.9 -19 2338 No stop 23 39 55 --- 19 20 42 44.9 359.0 2.3 145.0 186 2365 23 36 31 23 40 40 J1639+8631 19 21 27 46.4 356.6 2.8 135.7 26 2365 23 40 40 23 42 05 =1654+866 19 22 52 46.3 356.6 2.8 135.3 85 2376 23 40 41 23 42 05 PSJ1721+8842 19 22 52 44.9 358.9 2.3 144.5 -19 2376 No stop 23 45 30 --- 19 26 18 44.9 358.9 2.4 143.6 186 2402 23 42 06 23 45 30 J1639+8631 19 26 18 46.3 356.5 2.9 134.4 -19 2402 No stop 23 47 00 =1654+866 19 27 48 46.3 356.5 2.9 134.0 71 2413 23 45 31 23 47 00 PSJ1721+8842 19 27 48 44.8 358.9 2.4 143.2 -19 2413 No stop 23 50 25 --- 19 31 14 44.8 358.9 2.5 142.3 186 2440 23 47 01 23 51 10 J1639+8631 19 31 59 46.2 356.4 3.0 132.9 26 2440 23 51 10 23 52 35 =1654+866 19 33 24 46.2 356.4 3.0 132.5 85 2451 23 51 11 23 52 35 PSJ1721+8842 19 33 24 44.8 358.9 2.5 141.8 -19 2451 No stop 23 56 00 --- 19 36 50 44.8 358.8 2.6 140.9 186 2477 23 52 36 23 56 00 J1639+8631 19 36 50 46.2 356.4 3.1 131.6 -19 2477 No stop 23 57 30 =1654+866 19 38 20 46.2 356.3 3.1 131.3 71 2488 23 56 01 --- Sat 5 Jun 2021 Day 156 --- 00 02 30 3C454.3 19 43 21 41.2 468.8 -3.2 -45.4 163 2488 00 02 30 00 07 30 --- 19 48 21 42.0 470.0 -3.1 -45.0 300 2527 00 02 31 00 12 30 J1639+8631 19 53 22 46.0 356.1 3.3 127.3 161 2527 00 12 30 00 17 30 =1654+866 19 58 23 45.9 356.1 3.4 126.0 300 2565 00 12 31 Schedule for ZELENCHK (Code Zc ) Page 11 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 00 17 30 PSJ1721+8842 19 58 23 44.7 358.7 2.9 135.4 -20 2565 No stop 00 20 55 --- 20 01 49 44.7 358.7 3.0 134.6 185 2592 00 17 31 00 21 40 J1639+8631 20 02 34 45.9 356.0 3.5 125.0 25 2592 00 21 40 00 23 05 =1654+866 20 03 59 45.9 356.0 3.5 124.6 85 2603 00 21 41 00 23 05 PSJ1721+8842 20 03 59 44.7 358.7 3.0 134.0 -20 2603 No stop 00 26 30 --- 20 07 25 44.7 358.7 3.1 133.1 185 2629 00 23 06 00 26 30 J1639+8631 20 07 25 45.8 356.0 3.6 123.7 -20 2629 No stop 00 28 00 =1654+866 20 08 55 45.8 355.9 3.6 123.3 70 2640 00 26 31 00 28 00 PSJ1721+8842 20 08 55 44.7 358.7 3.1 132.7 -20 2640 No stop 00 31 25 --- 20 12 20 44.7 358.6 3.1 131.9 185 2667 00 28 01 00 32 10 J1639+8631 20 13 06 45.7 355.9 3.7 122.2 25 2667 00 32 10 00 33 35 =1654+866 20 14 31 45.7 355.9 3.7 121.9 85 2678 00 32 11 00 33 35 PSJ1721+8842 20 14 31 44.7 358.6 3.2 131.3 -20 2678 No stop 00 37 00 --- 20 17 56 44.7 358.6 3.2 130.5 185 2704 00 33 36 00 37 00 J1639+8631 20 17 56 45.7 355.8 3.7 121.0 -20 2704 No stop 00 38 30 =1654+866 20 19 27 45.7 355.8 3.8 120.6 70 2715 00 37 01 00 38 30 PSJ1721+8842 20 19 27 44.6 358.6 3.3 130.1 -20 2715 No stop 00 41 55 --- 20 22 52 44.6 358.6 3.3 129.2 185 2742 00 38 31 00 42 40 J1639+8631 20 23 37 45.6 355.8 3.8 119.5 25 2742 00 42 40 00 44 05 =1654+866 20 25 02 45.6 355.8 3.9 119.2 85 2753 00 42 41 00 44 05 PSJ1721+8842 20 25 02 44.6 358.6 3.4 128.7 -20 2753 No stop 00 47 30 --- 20 28 28 44.6 358.6 3.4 127.8 185 2779 00 44 06 00 47 30 J1639+8631 20 28 28 45.5 355.7 3.9 118.3 -20 2779 No stop 00 49 00 =1654+866 20 29 58 45.5 355.7 3.9 117.9 70 2790 00 47 31 00 49 00 PSJ1721+8842 20 29 58 44.6 358.5 3.4 127.4 -20 2790 No stop 00 52 25 --- 20 33 24 44.6 358.5 3.5 126.5 185 2817 00 49 01 00 53 10 J1639+8631 20 34 09 45.5 355.7 4.0 116.8 25 2817 00 53 10 00 54 35 =1654+866 20 35 34 45.4 355.6 4.0 116.5 85 2828 00 53 11 00 54 35 PSJ1721+8842 20 35 34 44.6 358.5 3.5 126.0 -20 2828 No stop 00 58 00 --- 20 39 00 44.6 358.5 3.6 125.1 185 2854 00 54 36 Schedule for ZELENCHK (Code Zc ) Page 12 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 00 58 00 J1639+8631 20 39 00 45.4 355.6 4.1 115.6 -20 2854 No stop 00 59 30 =1654+866 20 40 30 45.4 355.6 4.1 115.2 70 2865 00 58 01 00 59 30 PSJ1721+8842 20 40 30 44.5 358.5 3.6 124.7 -20 2865 No stop 01 02 55 --- 20 43 56 44.5 358.5 3.7 123.9 185 2892 00 59 31 01 03 40 J1639+8631 20 44 41 45.3 355.6 4.2 114.1 25 2892 01 03 40 01 05 05 =1654+866 20 46 06 45.3 355.5 4.2 113.8 85 2903 01 03 41 01 05 05 PSJ1721+8842 20 46 06 44.5 358.5 3.7 123.3 -20 2903 No stop 01 08 30 --- 20 49 31 44.5 358.5 3.8 122.5 185 2929 01 05 06 01 08 30 J1639+8631 20 49 31 45.2 355.5 4.3 112.9 -20 2929 No stop 01 10 00 =1654+866 20 51 02 45.2 355.5 4.3 112.5 70 2940 01 08 31 01 10 00 PSJ1721+8842 20 51 02 44.5 358.5 3.8 122.1 -20 2940 No stop 01 13 25 --- 20 54 27 44.5 358.4 3.8 121.2 185 2967 01 10 01 01 14 10 J1639+8631 20 55 12 45.2 355.5 4.4 111.4 25 2967 01 14 10 01 15 35 =1654+866 20 56 38 45.1 355.5 4.4 111.1 85 2978 01 14 11 01 15 35 PSJ1721+8842 20 56 38 44.5 358.4 3.9 120.7 -20 2978 No stop 01 19 00 --- 21 00 03 44.5 358.4 3.9 119.8 185 3004 01 15 36 01 19 00 J1639+8631 21 00 03 45.1 355.4 4.4 110.2 -20 3004 No stop 01 20 30 =1654+866 21 01 33 45.1 355.4 4.5 109.8 70 3015 01 19 01 01 20 30 PSJ1721+8842 21 01 33 44.4 358.4 4.0 119.4 -20 3015 No stop 01 23 55 --- 21 04 59 44.4 358.4 4.0 118.6 185 3042 01 20 31 01 24 40 J1639+8631 21 05 44 45.0 355.4 4.5 108.8 25 3042 01 24 40 01 26 05 =1654+866 21 07 09 45.0 355.4 4.6 108.4 85 3053 01 24 41 01 26 05 PSJ1721+8842 21 07 09 44.4 358.4 4.1 118.0 -20 3053 No stop 01 29 30 --- 21 10 35 44.4 358.4 4.1 117.1 185 3079 01 26 06 01 29 30 J1639+8631 21 10 35 44.9 355.4 4.6 107.5 -21 3079 No stop 01 31 00 =1654+866 21 12 05 44.9 355.4 4.6 107.1 69 3090 01 29 31 01 31 00 PSJ1721+8842 21 12 05 44.4 358.4 4.1 116.8 -21 3090 No stop 01 34 25 --- 21 15 31 44.4 358.4 4.2 115.9 184 3117 01 31 01 01 35 10 J1639+8631 21 16 16 44.9 355.3 4.7 106.1 24 3117 01 35 10 01 36 35 =1654+866 21 17 41 44.8 355.3 4.7 105.7 85 3128 01 35 11 Schedule for ZELENCHK (Code Zc ) Page 13 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 01 36 35 PSJ1721+8842 21 17 41 44.4 358.3 4.2 115.3 -21 3128 No stop 01 40 00 --- 21 21 07 44.3 358.3 4.3 114.5 184 3154 01 36 36 01 40 00 J1639+8631 21 21 07 44.8 355.3 4.8 104.9 -21 3154 No stop 01 41 30 =1654+866 21 22 37 44.8 355.3 4.8 104.5 69 3165 01 40 01 01 41 30 PSJ1721+8842 21 22 37 44.3 358.3 4.3 114.1 -21 3165 No stop 01 44 55 --- 21 26 02 44.3 358.3 4.4 113.2 184 3192 01 41 31 01 45 40 J1639+8631 21 26 48 44.7 355.3 4.9 103.4 24 3192 01 45 40 01 47 05 =1654+866 21 28 13 44.7 355.3 4.9 103.1 85 3203 01 45 41 01 47 05 PSJ1721+8842 21 28 13 44.3 358.3 4.4 112.7 -21 3203 No stop 01 50 30 --- 21 31 38 44.3 358.3 4.5 111.8 184 3229 01 47 06 01 50 30 J1639+8631 21 31 38 44.6 355.2 5.0 102.2 -21 3229 No stop 01 52 00 =1654+866 21 33 09 44.6 355.2 5.0 101.8 69 3240 01 50 31 01 52 00 PSJ1721+8842 21 33 09 44.3 358.3 4.5 111.4 -21 3240 No stop 01 55 25 --- 21 36 34 44.3 358.3 4.5 110.6 184 3267 01 52 01 01 56 10 J1639+8631 21 37 19 44.5 355.2 5.1 100.8 24 3267 01 56 10 01 57 35 =1654+866 21 38 45 44.5 355.2 5.1 100.4 85 3278 01 56 11 01 57 35 PSJ1721+8842 21 38 45 44.3 358.3 4.6 110.0 -21 3278 No stop 02 01 00 --- 21 42 10 44.2 358.3 4.6 109.2 184 3304 01 57 36 02 01 00 J1639+8631 21 42 10 44.5 355.2 5.1 99.5 -21 3304 No stop 02 02 30 =1654+866 21 43 40 44.4 355.2 5.2 99.2 69 3315 02 01 01 02 02 30 PSJ1721+8842 21 43 40 44.2 358.3 4.7 108.8 -21 3315 No stop 02 05 55 --- 21 47 06 44.2 358.3 4.7 107.9 184 3342 02 02 31 02 06 40 J1639+8631 21 47 51 44.4 355.2 5.2 98.1 24 3342 02 06 40 02 08 05 =1654+866 21 49 16 44.4 355.2 5.3 97.7 85 3353 02 06 41 02 08 05 PSJ1721+8842 21 49 16 44.2 358.3 4.8 107.4 -21 3353 No stop 02 11 30 --- 21 52 42 44.2 358.2 4.8 106.5 184 3379 02 08 06 02 11 30 J1639+8631 21 52 42 44.3 355.2 5.3 96.9 -21 3379 No stop 02 13 00 =1654+866 21 54 12 44.3 355.2 5.3 96.5 69 3390 02 11 31 02 13 00 PSJ1721+8842 21 54 12 44.2 358.2 4.8 106.1 -21 3390 No stop 02 16 25 --- 21 57 38 44.1 358.2 4.9 105.3 184 3417 02 13 01 Schedule for ZELENCHK (Code Zc ) Page 14 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 02 17 10 J1639+8631 21 58 23 44.2 355.2 5.4 95.5 24 3417 02 17 10 02 18 35 =1654+866 21 59 48 44.2 355.2 5.4 95.1 85 3428 02 17 11 02 18 35 PSJ1721+8842 21 59 48 44.1 358.2 4.9 104.7 -21 3428 No stop 02 22 00 --- 22 03 14 44.1 358.2 5.0 103.9 184 3454 02 18 36 02 22 00 J1639+8631 22 03 14 44.2 355.1 5.5 94.2 -21 3454 No stop 02 23 30 =1654+866 22 04 44 44.1 355.1 5.5 93.9 69 3465 02 22 01 02 23 30 PSJ1721+8842 22 04 44 44.1 358.2 5.0 103.5 -21 3465 No stop 02 26 55 --- 22 08 09 44.1 358.2 5.1 102.6 184 3492 02 23 31 02 27 40 J1639+8631 22 08 54 44.1 355.1 5.6 92.8 24 3492 02 27 40 02 29 05 =1654+866 22 10 20 44.0 355.1 5.6 92.5 85 3503 02 27 41 02 29 05 PSJ1721+8842 22 10 20 44.1 358.2 5.1 102.1 -21 3503 No stop 02 32 30 --- 22 13 45 44.1 358.2 5.2 101.2 184 3529 02 29 06 02 32 30 J1639+8631 22 13 45 44.0 355.1 5.7 91.6 -21 3529 No stop 02 34 00 =1654+866 22 15 16 44.0 355.1 5.7 91.2 69 3540 02 32 31 02 34 00 PSJ1721+8842 22 15 16 44.1 358.2 5.2 100.9 -21 3540 No stop 02 37 25 --- 22 18 41 44.0 358.2 5.3 100.0 184 3567 02 34 01 02 38 10 J1639+8631 22 19 26 43.9 355.1 5.8 90.2 24 3567 02 38 10 02 39 35 =1654+866 22 20 51 43.9 355.1 5.8 89.8 85 3578 02 38 11 02 39 35 PSJ1721+8842 22 20 51 44.0 358.2 5.3 99.4 -21 3578 No stop 02 43 00 --- 22 24 17 44.0 358.2 5.3 98.6 184 3604 02 39 36 02 43 00 J1639+8631 22 24 17 43.8 355.1 5.8 89.0 -21 3604 No stop 02 44 30 =1654+866 22 25 47 43.8 355.1 5.9 88.6 69 3615 02 43 01 02 44 30 PSJ1721+8842 22 25 47 44.0 358.2 5.4 98.2 -21 3615 No stop 02 47 55 --- 22 29 13 44.0 358.2 5.4 97.4 184 3642 02 44 31 02 48 40 J1639+8631 22 29 58 43.7 355.1 5.9 87.6 24 3642 02 48 40 02 50 05 =1654+866 22 31 23 43.7 355.1 6.0 87.2 85 3653 02 48 41 02 50 05 PSJ1721+8842 22 31 23 44.0 358.2 5.5 96.8 -21 3653 No stop 02 53 30 --- 22 34 49 43.9 358.2 5.5 96.0 184 3679 02 50 06 02 53 30 J1639+8631 22 34 49 43.7 355.1 6.0 86.4 -21 3679 No stop 02 55 00 =1654+866 22 36 19 43.6 355.1 6.0 86.0 69 3690 02 53 31 Schedule for ZELENCHK (Code Zc ) Page 15 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 02 55 00 PSJ1721+8842 22 36 19 43.9 358.2 5.5 95.6 -21 3690 No stop 02 58 25 --- 22 39 45 43.9 358.2 5.6 94.7 184 3717 02 55 01 02 59 10 J1639+8631 22 40 30 43.6 355.2 6.1 84.9 24 3717 02 59 10 03 00 35 =1654+866 22 41 55 43.6 355.2 6.1 84.6 85 3728 02 59 11 03 00 35 PSJ1721+8842 22 41 55 43.9 358.2 5.6 94.2 -21 3728 No stop 03 04 00 --- 22 45 20 43.9 358.2 5.7 93.3 184 3754 03 00 36 03 04 00 J1639+8631 22 45 20 43.5 355.2 6.2 83.7 -21 3754 No stop 03 05 30 =1654+866 22 46 51 43.5 355.2 6.2 83.4 69 3765 03 04 01 03 05 30 PSJ1721+8842 22 46 51 43.9 358.2 5.7 92.9 -21 3765 No stop 03 08 55 --- 22 50 16 43.9 358.2 5.8 92.1 184 3792 03 05 31 03 09 40 J1639+8631 22 51 01 43.4 355.2 6.3 82.3 25 3792 03 09 40 03 11 05 =1654+866 22 52 27 43.4 355.2 6.3 82.0 85 3803 03 09 41 03 11 05 PSJ1721+8842 22 52 27 43.8 358.2 5.8 91.5 -20 3803 No stop 03 14 30 --- 22 55 52 43.8 358.2 5.9 90.7 185 3829 03 11 06 03 14 30 J1639+8631 22 55 52 43.3 355.2 6.4 81.1 -20 3829 No stop 03 16 00 =1654+866 22 57 22 43.3 355.2 6.4 80.8 70 3840 03 14 31 03 16 00 PSJ1721+8842 22 57 22 43.8 358.2 5.9 90.3 -20 3840 No stop 03 19 25 --- 23 00 48 43.8 358.2 6.0 89.4 185 3867 03 16 01 03 20 10 J1639+8631 23 01 33 43.3 355.2 6.5 79.7 25 3867 03 20 10 03 21 35 =1654+866 23 02 58 43.2 355.2 6.5 79.4 85 3878 03 20 11 03 21 35 PSJ1721+8842 23 02 58 43.8 358.2 6.0 88.9 -20 3878 No stop 03 25 00 --- 23 06 24 43.8 358.2 6.0 88.1 185 3904 03 21 36 03 25 00 J1639+8631 23 06 24 43.2 355.2 6.5 78.5 -20 3904 No stop 03 26 30 =1654+866 23 07 54 43.2 355.2 6.6 78.2 70 3915 03 25 01 03 26 30 PSJ1721+8842 23 07 54 43.7 358.2 6.1 87.7 -20 3915 No stop 03 29 55 --- 23 11 20 43.7 358.2 6.1 86.8 185 3942 03 26 31 03 30 40 J1639+8631 23 12 05 43.1 355.3 6.6 77.1 25 3942 03 30 40 03 32 05 =1654+866 23 13 30 43.1 355.3 6.7 76.8 85 3953 03 30 41 03 32 05 PSJ1721+8842 23 13 30 43.7 358.2 6.2 86.3 -20 3953 No stop 03 35 30 --- 23 16 56 43.7 358.2 6.2 85.4 185 3979 03 32 06 Schedule for ZELENCHK (Code Zc ) Page 16 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 03 35 30 J1639+8631 23 16 56 43.0 355.3 6.7 75.9 -20 3979 No stop 03 37 00 =1654+866 23 18 26 43.0 355.3 6.7 75.6 70 3990 03 35 31 03 37 00 PSJ1721+8842 23 18 26 43.7 358.2 6.2 85.0 -20 3990 No stop 03 40 25 --- 23 21 51 43.7 358.2 6.3 84.2 185 4017 03 37 01 03 41 10 J1639+8631 23 22 37 42.9 355.3 6.8 74.5 25 4017 03 41 10 03 42 35 =1654+866 23 24 02 42.9 355.3 6.8 74.2 85 4028 03 41 11 03 42 35 PSJ1721+8842 23 24 02 43.7 358.2 6.3 83.7 -20 4028 No stop 03 46 00 --- 23 27 27 43.6 358.2 6.4 82.8 185 4054 03 42 36 03 46 00 J1639+8631 23 27 27 42.9 355.3 6.9 73.4 -20 4054 No stop 03 47 30 =1654+866 23 28 58 42.9 355.3 6.9 73.0 70 4065 03 46 01 03 47 30 PSJ1721+8842 23 28 58 43.6 358.2 6.4 82.4 -20 4065 No stop 03 50 55 --- 23 32 23 43.6 358.2 6.5 81.6 185 4092 03 47 31 03 51 40 J1639+8631 23 33 08 42.8 355.4 7.0 72.0 25 4092 03 51 40 03 53 05 =1654+866 23 34 34 42.8 355.4 7.0 71.6 85 4103 03 51 41 03 53 05 PSJ1721+8842 23 34 34 43.6 358.2 6.5 81.0 -20 4103 No stop 03 56 30 --- 23 37 59 43.6 358.2 6.6 80.2 185 4129 03 53 06 03 56 30 J1639+8631 23 37 59 42.7 355.4 7.1 70.8 -20 4129 No stop 03 58 00 =1654+866 23 39 29 42.7 355.4 7.1 70.4 70 4140 03 56 31 03 58 00 PSJ1721+8842 23 39 29 43.6 358.2 6.6 79.8 -20 4140 No stop 04 01 25 --- 23 42 55 43.5 358.2 6.7 78.9 185 4167 03 58 01 04 02 10 J1639+8631 23 43 40 42.6 355.4 7.2 69.4 25 4167 04 02 10 04 03 35 =1654+866 23 45 05 42.6 355.5 7.2 69.0 85 4178 04 02 11 04 03 35 PSJ1721+8842 23 45 05 43.5 358.2 6.7 78.4 -20 4178 No stop 04 07 00 --- 23 48 31 43.5 358.2 6.7 77.6 185 4204 04 03 36 04 07 00 J1639+8631 23 48 31 42.6 355.5 7.2 68.2 -20 4204 No stop 04 08 30 =1654+866 23 50 01 42.6 355.5 7.3 67.8 70 4215 04 07 01 04 13 30 3C84 23 55 02 52.7 435.0 -3.4 -68.8 196 4215 04 13 30 04 18 30 --- 00 00 03 53.5 435.5 -3.4 -69.2 300 4254 04 13 31 04 23 30 J1639+8631 00 05 04 42.3 355.6 7.5 64.2 195 4254 04 23 30 04 28 30 =1654+866 00 10 04 42.3 355.7 7.6 62.9 300 4292 04 23 31 Schedule for ZELENCHK (Code Zc ) Page 17 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 04 28 30 PSJ1721+8842 00 10 04 43.4 358.3 7.1 72.2 -19 4292 No stop 04 31 55 --- 00 13 30 43.4 358.3 7.2 71.3 186 4319 04 28 31 04 32 40 J1639+8631 00 14 15 42.2 355.7 7.7 61.9 26 4319 04 32 40 04 34 05 =1654+866 00 15 40 42.2 355.7 7.7 61.6 85 4329 04 32 41 04 34 05 PSJ1721+8842 00 15 40 43.4 358.3 7.2 70.8 -19 4329 No stop 04 37 30 --- 00 19 06 43.3 358.3 7.3 70.0 186 4356 04 34 06 04 37 30 J1639+8631 00 19 06 42.1 355.8 7.8 60.8 -19 4356 No stop 04 39 00 =1654+866 00 20 36 42.1 355.8 7.8 60.4 71 4367 04 37 31 04 39 00 PSJ1721+8842 00 20 36 43.3 358.3 7.3 69.6 -19 4367 No stop 04 42 25 --- 00 24 02 43.3 358.3 7.3 68.7 186 4394 04 39 01 04 43 10 J1639+8631 00 24 47 42.1 355.8 7.9 59.4 26 4394 04 43 10 04 44 35 =1654+866 00 26 12 42.1 355.8 7.9 59.0 85 4404 04 43 11 04 44 35 PSJ1721+8842 00 26 12 43.3 358.3 7.4 68.2 -19 4404 No stop 04 48 00 --- 00 29 38 43.3 358.3 7.4 67.3 186 4431 04 44 36 04 48 00 J1639+8631 00 29 38 42.0 355.9 7.9 58.2 -19 4431 No stop 04 49 30 =1654+866 00 31 08 42.0 355.9 8.0 57.8 71 4442 04 48 01 04 49 30 PSJ1721+8842 00 31 08 43.3 358.3 7.5 67.0 -19 4442 No stop 04 52 55 --- 00 34 33 43.3 358.3 7.5 66.1 186 4469 04 49 31 04 53 40 J1639+8631 00 35 18 41.9 355.9 8.0 56.8 26 4469 04 53 40 04 55 05 =1654+866 00 36 44 41.9 355.9 8.1 56.5 85 4479 04 53 41 04 55 05 PSJ1721+8842 00 36 44 43.3 358.3 7.6 65.6 -19 4479 No stop 04 58 30 --- 00 40 09 43.2 358.3 7.6 64.7 186 4506 04 55 06 04 58 30 J1639+8631 00 40 09 41.9 356.0 8.1 55.7 -19 4506 No stop 05 00 00 =1654+866 00 41 40 41.9 356.0 8.1 55.3 71 4517 04 58 31 05 00 00 PSJ1721+8842 00 41 40 43.2 358.4 7.6 64.4 -19 4517 No stop 05 03 25 --- 00 45 05 43.2 358.4 7.7 63.5 186 4544 05 00 01 05 04 10 J1639+8631 00 45 50 41.8 356.1 8.2 54.3 26 4544 05 04 10 05 05 35 =1654+866 00 47 15 41.8 356.1 8.2 53.9 85 4554 05 04 11 05 05 35 PSJ1721+8842 00 47 15 43.2 358.4 7.7 63.0 -19 4554 No stop 05 09 00 --- 00 50 41 43.2 358.4 7.8 62.1 186 4581 05 05 36 Schedule for ZELENCHK (Code Zc ) Page 18 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 05 09 00 J1639+8631 00 50 41 41.7 356.1 8.3 53.1 -18 4581 No stop 05 10 30 =1654+866 00 52 11 41.7 356.1 8.3 52.7 72 4592 05 09 01 05 10 30 PSJ1721+8842 00 52 11 43.2 358.4 7.8 61.8 -18 4592 No stop 05 13 55 --- 00 55 37 43.2 358.4 7.9 60.9 187 4619 05 10 31 05 14 40 J1639+8631 00 56 22 41.7 356.2 8.4 51.7 27 4619 05 14 40 05 16 05 =1654+866 00 57 47 41.7 356.2 8.4 51.4 85 4629 05 14 41 05 16 05 PSJ1721+8842 00 57 47 43.1 358.4 7.9 60.4 -18 4629 No stop 05 19 30 --- 01 01 13 43.1 358.4 8.0 59.5 187 4656 05 16 06 05 19 30 J1639+8631 01 01 13 41.6 356.2 8.5 50.6 -18 4656 No stop 05 21 00 =1654+866 01 02 43 41.6 356.3 8.5 50.2 72 4667 05 19 31 05 21 00 PSJ1721+8842 01 02 43 43.1 358.4 8.0 59.2 -18 4667 No stop 05 24 25 --- 01 06 09 43.1 358.4 8.0 58.3 187 4694 05 21 01 05 25 10 J1639+8631 01 06 54 41.6 356.3 8.6 49.2 27 4694 05 25 10 05 26 35 =1654+866 01 08 19 41.5 356.3 8.6 48.9 85 4704 05 25 11 05 26 35 PSJ1721+8842 01 08 19 43.1 358.5 8.1 57.8 -18 4704 No stop 05 30 00 --- 01 11 44 43.1 358.5 8.1 56.9 187 4731 05 26 36 05 30 00 J1639+8631 01 11 44 41.5 356.4 8.6 48.0 -18 4731 No stop 05 31 30 =1654+866 01 13 15 41.5 356.4 8.7 47.7 72 4742 05 30 01 05 31 30 PSJ1721+8842 01 13 15 43.1 358.5 8.2 56.6 -18 4742 No stop 05 34 55 --- 01 16 40 43.1 358.5 8.2 55.7 187 4769 05 31 31 05 35 40 J1639+8631 01 17 25 41.4 356.5 8.7 46.7 27 4769 05 35 40 05 37 05 =1654+866 01 18 51 41.4 356.5 8.8 46.3 85 4779 05 35 41 05 37 05 PSJ1721+8842 01 18 51 43.0 358.5 8.3 55.2 -18 4779 No stop 05 40 30 --- 01 22 16 43.0 358.5 8.3 54.3 187 4806 05 37 06 05 40 30 J1639+8631 01 22 16 41.4 356.5 8.8 45.5 -18 4806 No stop 05 42 00 =1654+866 01 23 46 41.4 356.6 8.8 45.1 72 4817 05 40 31 05 42 00 PSJ1721+8842 01 23 46 43.0 358.5 8.3 54.0 -18 4817 No stop 05 45 25 --- 01 27 12 43.0 358.5 8.4 53.1 187 4844 05 42 01 05 46 10 J1639+8631 01 27 57 41.3 356.6 8.9 44.1 28 4844 05 46 10 05 47 35 =1654+866 01 29 22 41.3 356.6 8.9 43.8 85 4854 05 46 11 Schedule for ZELENCHK (Code Zc ) Page 19 Resolving a gravitationally lensed dual back-hole system at z = 2.37 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 ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 05 47 35 PSJ1721+8842 01 29 22 43.0 358.5 8.4 52.6 -17 4854 No stop 05 51 00 --- 01 32 48 43.0 358.6 8.5 51.7 188 4881 05 47 36 05 51 00 J1639+8631 01 32 48 41.3 356.7 9.0 43.0 -17 4881 No stop 05 52 30 =1654+866 01 34 18 41.3 356.7 9.0 42.6 73 4892 05 51 01 05 52 30 PSJ1721+8842 01 34 18 43.0 358.6 8.5 51.4 -17 4892 No stop 05 55 55 --- 01 37 44 43.0 358.6 8.6 50.5 188 4919 05 52 31 05 56 35 J1639+8631 01 38 24 41.2 356.8 9.1 41.6 23 4919 05 56 35 05 58 00 =1654+866 01 39 49 41.2 356.8 9.1 41.3 85 4929 05 56 36 05 58 00 PSJ1721+8842 01 39 49 42.9 358.6 8.6 50.0 -17 4929 No stop 06 00 00 --- 01 41 49 42.9 358.6 8.6 49.5 103 4945 05 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess221.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 ****** Only 251.02 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 2 Station: ZELENCHK Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 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 = A B A B A B A B 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 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 366.49 366.49 366.49 366.49 430.49 430.49 430.49 430.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 9 10 11 Track assignments are: track1= 10, 14, 2, 6, 12, 16, 4, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * PSJ1721+8842 18 08 47.084813 * 17 21 43.936000 17 03 39.358204 0.00 88 43 26.13207 * 88 42 21.42800 88 40 50.86305 0.00 From catalog imbedded in main SCHED input file. * 3C84 03 16 29.567265 * 03 19 48.160096 03 21 10.455581 1.50 J0319+4130 41 19 51.91692 * 41 30 42.10404 41 35 07.95163 2.86 0316+413 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0319+41 GSFC 2016a X/S astro solution, 10291 observations. 1654+866 16 54 31.289232 * 16 39 25.014806 16 33 40.945152 10.77 * J1639+8631 86 37 07.15444 * 86 31 53.13177 86 29 21.91471 0.62 J1639+86 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 43 observations. * 3C345 16 41 17.606229 * 16 42 58.809967 16 43 43.280984 0.79 J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 14.84933 0.59 1641+399 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. * 3C454.3 22 51 29.519739 * 22 53 57.747939 22 55 00.276064 0.65 J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 30.58628 0.73 2251+158 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 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 PSJ1721+884sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 7.151 951.186 3C84 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 11.593 J1639+8631 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 3.313 413.872 3C345 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 12.750 3C454.3 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 11.639 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) PSJ1721+8842 68.8 3C84 27.1 J1639+8631 71.0 3C345 117.6 3C454.3 83.4 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