COVER INFORMATION Station: DARNHALL (Code Da ) Experiment: Resolving a gravitationally lensed dual back-hole system at z = 2.37 Exp. Code: em153a 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 DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- Next scan frequencies: 1626.49 1626.49 Next BBC frequencies: 645.51 645.51 Next scan bandwidths: 64.00 64.00 19 30 00 J1639+8631 11 46 06 54.1 5.7 -4.8 -103.5 0 0 19 30 00 19 31 30 =1654+866 11 47 36 54.1 5.7 -4.8 -103.9 90 6 19 30 01 19 31 30 PSJ1721+8842 11 47 36 53.4 2.2 -5.3 -99.2 -32 6 No stop 19 34 55 --- 11 51 02 53.4 2.2 -5.2 -100.1 173 19 19 31 31 19 35 40 J1639+8631 11 51 47 54.2 5.7 -4.7 -105.0 13 19 19 35 40 19 37 05 =1654+866 11 53 12 54.2 5.7 -4.7 -105.3 85 24 19 35 41 19 37 05 PSJ1721+8842 11 53 12 53.4 2.2 -5.2 -100.7 -32 24 No stop 19 40 30 --- 11 56 38 53.4 2.2 -5.1 -101.5 173 38 19 37 06 19 40 30 J1639+8631 11 56 38 54.3 5.6 -4.6 -106.2 -31 38 No stop 19 42 00 =1654+866 11 58 08 54.3 5.6 -4.6 -106.6 59 43 19 40 31 19 42 00 PSJ1721+8842 11 58 08 53.4 2.2 -5.1 -101.9 -31 43 No stop 19 45 25 --- 12 01 33 53.5 2.1 -5.0 -102.8 174 57 19 42 01 19 46 10 J1639+8631 12 02 18 54.4 5.6 -4.5 -107.6 14 57 19 46 10 19 47 35 =1654+866 12 03 44 54.4 5.6 -4.5 -108.0 85 62 19 46 11 19 47 35 PSJ1721+8842 12 03 44 53.5 2.1 -5.0 -103.3 -31 62 No stop 19 51 00 --- 12 07 09 53.5 2.1 -4.9 -104.2 174 75 19 47 36 19 51 00 J1639+8631 12 07 09 54.4 5.5 -4.4 -108.9 -31 75 No stop 19 52 30 =1654+866 12 08 39 54.4 5.5 -4.4 -109.3 59 81 19 51 01 19 52 30 PSJ1721+8842 12 08 39 53.5 2.1 -4.9 -104.5 -31 81 No stop 19 55 55 --- 12 12 05 53.5 2.1 -4.9 -105.4 174 94 19 52 31 19 56 40 J1639+8631 12 12 50 54.5 5.5 -4.3 -110.3 14 94 19 56 40 19 58 05 =1654+866 12 14 15 54.5 5.5 -4.3 -110.7 85 100 19 56 41 19 58 05 PSJ1721+8842 12 14 15 53.5 2.1 -4.8 -106.0 -31 100 No stop 20 01 30 --- 12 17 41 53.6 2.1 -4.8 -106.8 174 113 19 58 06 20 01 30 J1639+8631 12 17 41 54.6 5.4 -4.3 -111.6 -31 113 No stop 20 03 00 =1654+866 12 19 11 54.6 5.4 -4.2 -112.0 59 119 20 01 31 20 03 00 PSJ1721+8842 12 19 11 53.6 2.1 -4.7 -107.2 -31 119 No stop 20 06 25 --- 12 22 37 53.6 2.1 -4.7 -108.1 174 132 20 03 01 Schedule for DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- 20 07 10 J1639+8631 12 23 22 54.7 5.4 -4.2 -113.1 14 132 20 07 10 20 08 35 =1654+866 12 24 47 54.7 5.4 -4.1 -113.4 85 138 20 07 11 20 08 35 PSJ1721+8842 12 24 47 53.6 2.1 -4.6 -108.6 -31 138 No stop 20 12 00 --- 12 28 13 53.6 2.1 -4.6 -109.5 174 151 20 08 36 20 12 00 J1639+8631 12 28 13 54.7 5.3 -4.1 -114.3 -31 151 No stop 20 13 30 =1654+866 12 29 43 54.7 5.3 -4.1 -114.7 59 157 20 12 01 20 13 30 PSJ1721+8842 12 29 43 53.6 2.1 -4.6 -109.9 -31 157 No stop 20 16 55 --- 12 33 08 53.6 2.1 -4.5 -110.7 174 170 20 13 31 20 17 40 J1639+8631 12 33 54 54.8 5.3 -4.0 -115.8 15 170 20 17 40 20 19 05 =1654+866 12 35 19 54.8 5.3 -4.0 -116.2 85 175 20 17 41 20 19 05 PSJ1721+8842 12 35 19 53.7 2.1 -4.5 -111.3 -30 175 No stop 20 22 30 --- 12 38 44 53.7 2.0 -4.4 -112.1 175 188 20 19 06 20 22 30 J1639+8631 12 38 44 54.9 5.2 -3.9 -117.0 -30 188 No stop 20 24 00 =1654+866 12 40 15 54.9 5.2 -3.9 -117.4 60 194 20 22 31 20 24 00 PSJ1721+8842 12 40 15 53.7 2.0 -4.4 -112.5 -30 194 No stop 20 27 25 --- 12 43 40 53.7 2.0 -4.3 -113.4 175 207 20 24 01 20 28 10 J1639+8631 12 44 25 54.9 5.1 -3.8 -118.5 15 207 20 28 10 20 29 35 =1654+866 12 45 51 55.0 5.1 -3.8 -118.9 85 213 20 28 11 20 29 35 PSJ1721+8842 12 45 51 53.7 2.0 -4.3 -113.9 -30 213 No stop 20 33 00 --- 12 49 16 53.7 2.0 -4.2 -114.8 175 226 20 29 36 20 33 00 J1639+8631 12 49 16 55.0 5.1 -3.7 -119.8 -30 226 No stop 20 34 30 =1654+866 12 50 46 55.0 5.1 -3.7 -120.2 60 232 20 33 01 20 34 30 PSJ1721+8842 12 50 46 53.7 2.0 -4.2 -115.2 -30 232 No stop 20 37 55 --- 12 54 12 53.8 2.0 -4.2 -116.0 175 245 20 34 31 20 38 40 J1639+8631 12 54 57 55.1 5.0 -3.6 -121.3 15 245 20 38 40 20 40 05 =1654+866 12 56 22 55.1 5.0 -3.6 -121.6 85 251 20 38 41 20 40 05 PSJ1721+8842 12 56 22 53.8 2.0 -4.1 -116.6 -29 251 No stop 20 43 30 --- 12 59 48 53.8 2.0 -4.1 -117.5 176 264 20 40 06 20 43 30 J1639+8631 12 59 48 55.1 4.9 -3.6 -122.5 -29 264 No stop 20 45 00 =1654+866 13 01 18 55.2 4.9 -3.5 -122.9 61 270 20 43 31 Schedule for DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- 20 45 00 PSJ1721+8842 13 01 18 53.8 1.9 -4.0 -117.8 -29 270 No stop 20 48 25 --- 13 04 44 53.8 1.9 -4.0 -118.7 176 283 20 45 01 20 49 10 J1639+8631 13 05 29 55.2 4.9 -3.5 -124.0 16 283 20 49 10 20 50 35 =1654+866 13 06 54 55.2 4.8 -3.4 -124.4 85 288 20 49 11 20 50 35 PSJ1721+8842 13 06 54 53.8 1.9 -3.9 -119.3 -29 288 No stop 20 54 00 --- 13 10 20 53.8 1.9 -3.9 -120.1 176 301 20 50 36 20 54 00 J1639+8631 13 10 20 55.3 4.8 -3.4 -125.3 -29 301 No stop 20 55 30 =1654+866 13 11 50 55.3 4.8 -3.4 -125.7 61 307 20 54 01 21 00 30 3C345 13 16 51 52.9 89.8 -3.4 -51.3 22 307 21 00 30 21 05 30 --- 13 21 51 53.6 90.8 -3.4 -51.3 300 327 21 00 31 21 10 30 J1639+8631 13 26 52 55.5 4.5 -3.1 -129.6 18 327 21 10 30 21 15 30 =1654+866 13 31 53 55.5 4.4 -3.0 -131.0 300 346 21 10 31 21 15 30 PSJ1721+8842 13 31 53 53.9 1.8 -3.5 -125.6 -28 346 No stop 21 18 55 --- 13 35 19 54.0 1.8 -3.5 -126.5 177 359 21 15 31 21 19 40 J1639+8631 13 36 04 55.6 4.3 -3.0 -132.1 18 359 21 19 40 21 21 05 =1654+866 13 37 29 55.6 4.3 -2.9 -132.4 85 365 21 19 41 21 21 05 PSJ1721+8842 13 37 29 54.0 1.8 -3.4 -127.0 -27 365 No stop 21 24 30 --- 13 40 55 54.0 1.7 -3.4 -127.9 178 378 21 21 06 21 24 30 J1639+8631 13 40 55 55.6 4.3 -2.9 -133.3 -27 378 No stop 21 26 00 =1654+866 13 42 25 55.7 4.2 -2.9 -133.7 63 384 21 24 31 21 26 00 PSJ1721+8842 13 42 25 54.0 1.7 -3.4 -128.3 -27 384 No stop 21 29 25 --- 13 45 50 54.0 1.7 -3.3 -129.2 178 397 21 26 01 21 30 10 J1639+8631 13 46 36 55.7 4.2 -2.8 -134.8 18 397 21 30 10 21 31 35 =1654+866 13 48 01 55.7 4.1 -2.8 -135.2 85 402 21 30 11 21 31 35 PSJ1721+8842 13 48 01 54.0 1.7 -3.3 -129.7 -27 402 No stop 21 35 00 --- 13 51 26 54.0 1.7 -3.2 -130.6 178 415 21 31 36 21 35 00 J1639+8631 13 51 26 55.8 4.1 -2.7 -136.1 -26 415 No stop 21 36 30 =1654+866 13 52 57 55.8 4.0 -2.7 -136.5 64 421 21 35 01 21 36 30 PSJ1721+8842 13 52 57 54.0 1.7 -3.2 -131.0 -26 421 No stop 21 39 55 --- 13 56 22 54.0 1.6 -3.1 -131.9 179 434 21 36 31 Schedule for DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- 21 40 40 J1639+8631 13 57 07 55.8 3.9 -2.6 -137.6 19 434 21 40 40 21 42 05 =1654+866 13 58 32 55.8 3.9 -2.6 -138.0 85 440 21 40 41 21 42 05 PSJ1721+8842 13 58 32 54.1 1.6 -3.1 -132.4 -26 440 No stop 21 45 30 --- 14 01 58 54.1 1.6 -3.0 -133.3 179 453 21 42 06 21 45 30 J1639+8631 14 01 58 55.9 3.8 -2.5 -138.9 -26 453 No stop 21 47 00 =1654+866 14 03 28 55.9 3.8 -2.5 -139.3 64 459 21 45 31 21 47 00 PSJ1721+8842 14 03 28 54.1 1.6 -3.0 -133.7 -26 459 No stop 21 50 25 --- 14 06 54 54.1 1.6 -2.9 -134.5 179 472 21 47 01 21 51 10 J1639+8631 14 07 39 55.9 3.7 -2.4 -140.5 20 472 21 51 10 21 52 35 =1654+866 14 09 04 55.9 3.7 -2.4 -140.8 85 478 21 51 11 21 52 35 PSJ1721+8842 14 09 04 54.1 1.6 -2.9 -135.1 -25 478 No stop 21 56 00 --- 14 12 30 54.1 1.5 -2.9 -136.0 180 491 21 52 36 21 56 00 J1639+8631 14 12 30 56.0 3.6 -2.4 -141.7 -25 491 No stop 21 57 30 =1654+866 14 14 00 56.0 3.6 -2.3 -142.1 65 497 21 56 01 21 57 30 PSJ1721+8842 14 14 00 54.1 1.5 -2.8 -136.4 -25 497 No stop 22 00 55 --- 14 17 26 54.1 1.5 -2.8 -137.2 180 510 21 57 31 22 01 40 J1639+8631 14 18 11 56.0 3.5 -2.3 -143.3 21 510 22 01 40 22 03 05 =1654+866 14 19 36 56.0 3.5 -2.2 -143.6 85 515 22 01 41 22 03 05 PSJ1721+8842 14 19 36 54.1 1.5 -2.7 -137.8 -24 515 No stop 22 06 30 --- 14 23 01 54.2 1.5 -2.7 -138.7 181 528 22 03 06 22 06 30 J1639+8631 14 23 01 56.1 3.4 -2.2 -144.6 -24 528 No stop 22 08 00 =1654+866 14 24 32 56.1 3.4 -2.2 -145.0 66 534 22 06 31 22 08 00 PSJ1721+8842 14 24 32 54.2 1.4 -2.7 -139.1 -24 534 No stop 22 11 25 --- 14 27 57 54.2 1.4 -2.6 -139.9 181 547 22 08 01 22 12 10 J1639+8631 14 28 42 56.1 3.3 -2.1 -146.1 21 547 22 12 10 22 13 35 =1654+866 14 30 08 56.1 3.2 -2.1 -146.5 85 553 22 12 11 22 13 35 PSJ1721+8842 14 30 08 54.2 1.4 -2.6 -140.5 -24 553 No stop 22 17 00 --- 14 33 33 54.2 1.4 -2.5 -141.4 181 566 22 13 36 22 17 00 J1639+8631 14 33 33 56.2 3.2 -2.0 -147.4 -24 566 No stop 22 18 30 =1654+866 14 35 03 56.2 3.1 -2.0 -147.8 66 572 22 17 01 Schedule for DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- 22 18 30 PSJ1721+8842 14 35 03 54.2 1.4 -2.5 -141.8 -24 572 No stop 22 21 55 --- 14 38 29 54.2 1.3 -2.4 -142.6 181 585 22 18 31 22 22 40 J1639+8631 14 39 14 56.2 3.0 -1.9 -148.9 21 585 22 22 40 22 24 05 =1654+866 14 40 39 56.2 3.0 -1.9 -149.3 85 591 22 22 41 22 24 05 PSJ1721+8842 14 40 39 54.2 1.3 -2.4 -143.2 -24 591 No stop 22 27 30 --- 14 44 05 54.2 1.3 -2.3 -144.1 181 604 22 24 06 22 27 30 J1639+8631 14 44 05 56.2 2.9 -1.8 -150.2 -24 604 No stop 22 29 00 =1654+866 14 45 35 56.3 2.9 -1.8 -150.6 66 610 22 27 31 22 29 00 PSJ1721+8842 14 45 35 54.2 1.3 -2.3 -144.5 -24 610 No stop 22 32 25 --- 14 49 01 54.2 1.3 -2.2 -145.3 181 623 22 29 01 22 33 10 J1639+8631 14 49 46 56.3 2.8 -1.7 -151.8 20 623 22 33 10 22 34 35 =1654+866 14 51 11 56.3 2.7 -1.7 -152.1 85 628 22 33 11 22 34 35 PSJ1721+8842 14 51 11 54.3 1.2 -2.2 -145.9 -25 628 No stop 22 38 00 --- 14 54 37 54.3 1.2 -2.2 -146.8 180 642 22 34 36 22 38 00 J1639+8631 14 54 37 56.3 2.7 -1.7 -153.1 -25 642 No stop 22 39 30 =1654+866 14 56 07 56.3 2.6 -1.6 -153.5 65 647 22 38 01 22 39 30 PSJ1721+8842 14 56 07 54.3 1.2 -2.1 -147.2 -25 647 No stop 22 42 55 --- 14 59 32 54.3 1.2 -2.1 -148.0 180 661 22 39 31 22 43 40 J1639+8631 15 00 18 56.4 2.5 -1.6 -154.6 20 661 22 43 40 22 45 05 =1654+866 15 01 43 56.4 2.5 -1.5 -155.0 85 666 22 43 41 22 45 05 PSJ1721+8842 15 01 43 54.3 1.1 -2.0 -148.6 -25 666 No stop 22 48 30 --- 15 05 08 54.3 1.1 -2.0 -149.5 180 679 22 45 06 22 48 30 J1639+8631 15 05 08 56.4 2.4 -1.5 -155.9 -25 679 No stop 22 50 00 =1654+866 15 06 39 56.4 2.4 -1.5 -156.3 65 685 22 48 31 22 50 00 PSJ1721+8842 15 06 39 54.3 1.1 -2.0 -149.9 -25 685 No stop 22 53 25 --- 15 10 04 54.3 1.1 -1.9 -150.7 180 698 22 50 01 22 54 10 J1639+8631 15 10 49 56.4 2.2 -1.4 -157.4 20 698 22 54 10 22 55 35 =1654+866 15 12 15 56.4 2.2 -1.4 -157.8 85 704 22 54 11 22 55 35 PSJ1721+8842 15 12 15 54.3 1.1 -1.9 -151.3 -25 704 No stop 22 59 00 --- 15 15 40 54.3 1.0 -1.8 -152.2 180 717 22 55 36 Schedule for DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- 22 59 00 J1639+8631 15 15 40 56.4 2.1 -1.3 -158.8 -25 717 No stop 23 00 30 =1654+866 15 17 10 56.5 2.1 -1.3 -159.2 65 723 22 59 01 23 00 30 PSJ1721+8842 15 17 10 54.3 1.0 -1.8 -152.6 -25 723 No stop 23 03 55 --- 15 20 36 54.3 1.0 -1.7 -153.4 180 736 23 00 31 23 04 40 J1639+8631 15 21 21 56.5 2.0 -1.2 -160.3 20 736 23 04 40 23 06 05 =1654+866 15 22 46 56.5 1.9 -1.2 -160.7 85 741 23 04 41 23 06 05 PSJ1721+8842 15 22 46 54.3 1.0 -1.7 -154.0 -25 741 No stop 23 09 30 --- 15 26 12 54.4 0.9 -1.6 -154.9 180 755 23 06 06 23 09 30 J1639+8631 15 26 12 56.5 1.8 -1.1 -161.6 -25 755 No stop 23 11 00 =1654+866 15 27 42 56.5 1.8 -1.1 -162.0 65 760 23 09 31 23 11 00 PSJ1721+8842 15 27 42 54.4 0.9 -1.6 -155.3 -25 760 No stop 23 14 25 --- 15 31 08 54.4 0.9 -1.5 -156.1 180 774 23 11 01 23 15 10 J1639+8631 15 31 53 56.5 1.7 -1.0 -163.2 20 774 23 15 10 23 16 35 =1654+866 15 33 18 56.5 1.7 -1.0 -163.5 85 779 23 15 11 23 16 35 PSJ1721+8842 15 33 18 54.4 0.9 -1.5 -156.7 -25 779 No stop 23 20 00 --- 15 36 44 54.4 0.8 -1.4 -157.6 180 792 23 16 36 23 20 00 J1639+8631 15 36 44 56.5 1.6 -0.9 -164.5 -25 792 No stop 23 21 30 =1654+866 15 38 14 56.6 1.5 -0.9 -164.9 65 798 23 20 01 23 21 30 PSJ1721+8842 15 38 14 54.4 0.8 -1.4 -158.0 -25 798 No stop 23 24 55 --- 15 41 39 54.4 0.8 -1.4 -158.9 180 811 23 21 31 23 25 40 J1639+8631 15 42 24 56.6 1.4 -0.9 -166.0 20 811 23 25 40 23 27 05 =1654+866 15 43 50 56.6 1.4 -0.8 -166.4 85 817 23 25 41 23 27 05 PSJ1721+8842 15 43 50 54.4 0.8 -1.3 -159.4 -25 817 No stop 23 30 30 --- 15 47 15 54.4 0.7 -1.3 -160.3 180 830 23 27 06 23 30 30 J1639+8631 15 47 15 56.6 1.3 -0.8 -167.3 -25 830 No stop 23 32 00 =1654+866 15 48 46 56.6 1.2 -0.7 -167.8 65 836 23 30 31 23 32 00 PSJ1721+8842 15 48 46 54.4 0.7 -1.2 -160.7 -25 836 No stop 23 35 25 --- 15 52 11 54.4 0.7 -1.2 -161.6 180 849 23 32 01 23 36 10 J1639+8631 15 52 56 56.6 1.1 -0.7 -168.9 20 849 23 36 10 23 37 35 =1654+866 15 54 21 56.6 1.1 -0.7 -169.3 85 854 23 36 11 Schedule for DARNHALL (Code Da ) 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 28 May 2021 Day 148 --- 23 37 35 PSJ1721+8842 15 54 21 54.4 0.7 -1.2 -162.1 -25 854 No stop 23 41 00 --- 15 57 47 54.4 0.6 -1.1 -163.0 180 868 23 37 36 23 41 00 J1639+8631 15 57 47 56.6 1.0 -0.6 -170.2 -25 868 No stop 23 42 30 =1654+866 15 59 17 56.6 1.0 -0.6 -170.6 65 873 23 41 01 23 42 30 PSJ1721+8842 15 59 17 54.4 0.6 -1.1 -163.4 -25 873 No stop 23 45 55 --- 16 02 43 54.4 0.6 -1.0 -164.3 180 887 23 42 31 23 46 40 J1639+8631 16 03 28 56.6 0.8 -0.5 -171.8 20 887 23 46 40 23 48 05 =1654+866 16 04 53 56.6 0.8 -0.5 -172.1 85 892 23 46 41 23 48 05 PSJ1721+8842 16 04 53 54.4 0.6 -1.0 -164.8 -25 892 No stop 23 51 30 --- 16 08 19 54.4 0.5 -0.9 -165.7 180 905 23 48 06 23 51 30 J1639+8631 16 08 19 56.6 0.7 -0.4 -173.1 -25 905 No stop 23 53 00 =1654+866 16 09 49 56.6 0.7 -0.4 -173.5 65 911 23 51 31 23 53 00 PSJ1721+8842 16 09 49 54.4 0.5 -0.9 -166.1 -25 911 No stop 23 56 25 --- 16 13 15 54.4 0.5 -0.8 -167.0 180 924 23 53 01 23 57 10 J1639+8631 16 14 00 56.7 0.5 -0.3 -174.6 19 924 23 57 10 23 58 35 =1654+866 16 15 25 56.7 0.5 -0.3 -175.0 85 930 23 57 11 --- Start: Fri 28 May 2021 Day 148 -- Stop: Sat 29 May 2021 Day 149 --- 23 58 35 PSJ1721+8842 16 15 25 54.4 0.5 -0.8 -167.6 -25 930 No stop 00 02 00 --- 16 18 50 54.5 0.4 -0.7 -168.4 180 943 23 58 36 00 02 00 J1639+8631 16 18 50 56.7 0.4 -0.2 -175.9 -26 943 No stop 00 03 30 =1654+866 16 20 21 56.7 0.4 -0.2 -176.4 64 949 00 02 01 00 03 30 PSJ1721+8842 16 20 21 54.5 0.4 -0.7 -168.8 -25 949 No stop 00 06 55 --- 16 23 46 54.5 0.4 -0.7 -169.7 180 962 00 03 31 00 07 40 J1639+8631 16 24 31 56.7 0.3 -0.2 -177.5 20 962 00 07 40 00 09 05 =1654+866 16 25 57 56.7 0.2 -0.1 -177.9 85 967 00 07 41 00 09 05 PSJ1721+8842 16 25 57 54.5 0.4 -0.6 -170.3 -25 967 No stop 00 12 30 --- 16 29 22 54.5 0.3 -0.6 -171.2 180 981 00 09 06 00 12 30 J1639+8631 16 29 22 56.7 0.1 -0.1 -178.8 -25 981 No stop 00 14 00 =1654+866 16 30 52 56.7 0.1 -0.0 -179.2 65 986 00 12 31 Schedule for DARNHALL (Code Da ) 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 ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 00 14 00 PSJ1721+8842 16 30 52 54.5 0.3 -0.5 -171.5 -25 986 No stop 00 17 25 --- 16 34 18 54.5 0.3 -0.5 -172.4 180 1000 00 14 01 00 18 10 J1639+8631 16 35 03 56.7 -0.0 0.0 179.6 20 1000 00 18 10 00 19 35 =1654+866 16 36 28 56.7 -0.1 0.0 179.2 85 1005 00 18 11 00 19 35 PSJ1721+8842 16 36 28 54.5 0.3 -0.5 -173.0 -25 1005 No stop 00 23 00 --- 16 39 54 54.5 0.2 -0.4 -173.9 180 1018 00 19 36 00 23 00 J1639+8631 16 39 54 56.7 -0.2 0.1 178.3 -25 1018 No stop 00 24 30 =1654+866 16 41 24 56.7 -0.2 0.1 177.9 65 1024 00 23 01 00 24 30 PSJ1721+8842 16 41 24 54.5 0.2 -0.4 -174.3 -25 1024 No stop 00 27 55 --- 16 44 50 54.5 0.2 -0.3 -175.1 180 1037 00 24 31 00 28 40 J1639+8631 16 45 35 56.7 -0.3 0.2 176.8 20 1037 00 28 40 00 30 05 =1654+866 16 47 00 56.7 -0.4 0.2 176.4 85 1043 00 28 41 00 30 05 PSJ1721+8842 16 47 00 54.5 0.2 -0.3 -175.7 -25 1043 No stop 00 33 30 --- 16 50 26 54.5 0.1 -0.2 -176.6 180 1056 00 30 06 00 33 30 J1639+8631 16 50 26 56.7 -0.5 0.3 175.4 -25 1056 No stop 00 35 00 =1654+866 16 51 56 56.7 -0.5 0.3 175.0 65 1062 00 33 31 00 35 00 PSJ1721+8842 16 51 56 54.5 0.1 -0.2 -177.0 -25 1062 No stop 00 38 25 --- 16 55 21 54.5 0.1 -0.1 -177.9 180 1075 00 35 01 00 39 10 J1639+8631 16 56 07 56.6 -0.6 0.4 173.9 20 1075 00 39 10 00 40 35 =1654+866 16 57 32 56.6 -0.7 0.4 173.5 85 1080 00 39 11 00 40 35 PSJ1721+8842 16 57 32 54.5 0.1 -0.1 -178.4 -25 1080 No stop 00 44 00 --- 17 00 57 54.5 0.0 -0.0 -179.3 180 1094 00 40 36 00 44 00 J1639+8631 17 00 57 56.6 -0.8 0.5 172.6 -25 1094 No stop 00 45 30 =1654+866 17 02 28 56.6 -0.8 0.5 172.2 65 1099 00 44 01 00 45 30 PSJ1721+8842 17 02 28 54.5 0.0 -0.0 -179.7 -25 1099 No stop 00 48 55 --- 17 05 53 54.5 -0.0 0.0 179.4 180 1113 00 45 31 00 49 40 J1639+8631 17 06 38 56.6 -0.9 0.5 171.0 20 1113 00 49 40 00 51 05 =1654+866 17 08 04 56.6 -1.0 0.6 170.6 85 1118 00 49 41 00 51 05 PSJ1721+8842 17 08 04 54.5 -0.0 0.1 178.9 -25 1118 No stop 00 54 30 --- 17 11 29 54.5 -0.1 0.1 178.0 180 1131 00 51 06 Schedule for DARNHALL (Code Da ) 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 ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 00 54 30 J1639+8631 17 11 29 56.6 -1.0 0.6 169.7 -25 1131 No stop 00 56 00 =1654+866 17 12 59 56.6 -1.1 0.7 169.3 65 1137 00 54 31 00 56 00 PSJ1721+8842 17 12 59 54.5 -0.1 0.2 177.6 -25 1137 No stop 00 59 25 --- 17 16 25 54.5 -0.1 0.2 176.7 180 1150 00 56 01 01 00 10 J1639+8631 17 17 10 56.6 -1.2 0.7 168.1 20 1150 01 00 10 01 01 35 =1654+866 17 18 35 56.6 -1.2 0.7 167.8 85 1156 01 00 11 01 01 35 PSJ1721+8842 17 18 35 54.5 -0.1 0.2 176.1 -25 1156 No stop 01 05 00 --- 17 22 01 54.5 -0.2 0.3 175.3 180 1169 01 01 36 01 05 00 J1639+8631 17 22 01 56.6 -1.3 0.8 166.8 -25 1169 No stop 01 06 30 =1654+866 17 23 31 56.6 -1.4 0.8 166.4 65 1175 01 05 01 01 06 30 PSJ1721+8842 17 23 31 54.5 -0.2 0.3 174.9 -25 1175 No stop 01 09 55 --- 17 26 57 54.5 -0.2 0.4 174.0 180 1188 01 06 31 01 10 40 J1639+8631 17 27 42 56.6 -1.5 0.9 165.3 20 1188 01 10 40 01 12 05 =1654+866 17 29 07 56.6 -1.5 0.9 164.9 85 1194 01 10 41 01 12 05 PSJ1721+8842 17 29 07 54.5 -0.3 0.4 173.4 -25 1194 No stop 01 15 30 --- 17 32 33 54.5 -0.3 0.5 172.5 180 1207 01 12 06 01 15 30 J1639+8631 17 32 33 56.5 -1.6 1.0 164.0 -25 1207 No stop 01 17 00 =1654+866 17 34 03 56.5 -1.7 1.0 163.6 65 1213 01 15 31 01 17 00 PSJ1721+8842 17 34 03 54.5 -0.3 0.5 172.2 -25 1213 No stop 01 20 25 --- 17 37 28 54.5 -0.3 0.6 171.3 180 1226 01 17 01 01 21 10 J1639+8631 17 38 13 56.5 -1.8 1.1 162.4 20 1226 01 21 10 01 22 35 =1654+866 17 39 39 56.5 -1.8 1.1 162.0 85 1231 01 21 11 01 22 35 PSJ1721+8842 17 39 39 54.5 -0.4 0.6 170.7 -25 1231 No stop 01 26 00 --- 17 43 04 54.5 -0.4 0.7 169.8 180 1244 01 22 36 01 26 00 J1639+8631 17 43 04 56.5 -1.9 1.2 161.1 -25 1244 No stop 01 27 30 =1654+866 17 44 35 56.5 -1.9 1.2 160.7 65 1250 01 26 01 01 32 30 3C454.3 17 49 35 21.1 90.8 -5.1 -38.6 -1 1250 01 32 30 01 37 30 --- 17 54 36 21.8 91.8 -5.0 -38.6 299 1270 01 32 31 01 42 30 J1639+8631 17 59 37 56.4 -2.3 1.4 156.6 -5 1270 01 42 30 01 47 30 =1654+866 18 04 38 56.4 -2.4 1.5 155.3 295 1289 01 42 31 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 01 47 30 PSJ1721+8842 18 04 38 54.4 -0.6 1.0 164.3 -24 1289 No stop 01 50 55 --- 18 08 03 54.4 -0.6 1.1 163.4 181 1302 01 47 31 01 51 40 J1639+8631 18 08 48 56.3 -2.6 1.6 154.1 21 1302 01 51 40 01 53 05 =1654+866 18 10 14 56.3 -2.6 1.6 153.7 85 1308 01 51 41 01 53 05 PSJ1721+8842 18 10 14 54.4 -0.6 1.1 162.8 -24 1308 No stop 01 56 30 --- 18 13 39 54.4 -0.7 1.2 162.0 181 1321 01 53 06 01 56 30 J1639+8631 18 13 39 56.3 -2.7 1.7 152.8 -24 1321 No stop 01 58 00 =1654+866 18 15 10 56.3 -2.7 1.7 152.4 66 1327 01 56 31 01 58 00 PSJ1721+8842 18 15 10 54.4 -0.7 1.2 161.6 -24 1327 No stop 02 01 25 --- 18 18 35 54.4 -0.7 1.2 160.7 181 1340 01 58 01 02 02 10 J1639+8631 18 19 20 56.3 -2.8 1.8 151.3 20 1340 02 02 10 02 03 35 =1654+866 18 20 45 56.3 -2.8 1.8 150.9 85 1345 02 02 11 02 03 35 PSJ1721+8842 18 20 45 54.4 -0.7 1.3 160.1 -25 1345 No stop 02 07 00 --- 18 24 11 54.4 -0.8 1.3 159.2 180 1358 02 03 36 02 07 00 J1639+8631 18 24 11 56.2 -2.9 1.8 150.0 -25 1358 No stop 02 08 30 =1654+866 18 25 41 56.2 -3.0 1.9 149.6 65 1364 02 07 01 02 08 30 PSJ1721+8842 18 25 41 54.4 -0.8 1.4 158.9 -25 1364 No stop 02 11 55 --- 18 29 07 54.4 -0.8 1.4 158.0 180 1377 02 08 31 02 12 40 J1639+8631 18 29 52 56.2 -3.1 1.9 148.5 19 1377 02 12 40 02 14 05 =1654+866 18 31 17 56.2 -3.1 2.0 148.1 85 1383 02 12 41 02 14 05 PSJ1721+8842 18 31 17 54.4 -0.8 1.5 157.4 -26 1383 No stop 02 17 30 --- 18 34 43 54.4 -0.9 1.5 156.5 179 1396 02 14 06 02 17 30 J1639+8631 18 34 43 56.1 -3.2 2.0 147.2 -26 1396 No stop 02 19 00 =1654+866 18 36 13 56.1 -3.2 2.0 146.7 64 1402 02 17 31 02 19 00 PSJ1721+8842 18 36 13 54.4 -0.9 1.5 156.1 -26 1402 No stop 02 22 25 --- 18 39 39 54.4 -0.9 1.6 155.3 179 1415 02 19 01 02 23 10 J1639+8631 18 40 24 56.1 -3.3 2.1 145.6 19 1415 02 23 10 02 24 35 =1654+866 18 41 49 56.1 -3.3 2.1 145.2 85 1421 02 23 11 02 24 35 PSJ1721+8842 18 41 49 54.4 -0.9 1.6 154.7 -26 1421 No stop 02 28 00 --- 18 45 14 54.3 -1.0 1.7 153.8 179 1434 02 24 36 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 02 28 00 J1639+8631 18 45 14 56.1 -3.4 2.2 144.3 -27 1434 No stop 02 29 30 =1654+866 18 46 45 56.0 -3.4 2.2 143.9 63 1440 02 28 01 02 29 30 PSJ1721+8842 18 46 45 54.3 -1.0 1.7 153.4 -27 1440 No stop 02 32 55 --- 18 50 10 54.3 -1.0 1.8 152.6 178 1453 02 29 31 02 33 40 J1639+8631 18 50 55 56.0 -3.5 2.3 142.8 18 1453 02 33 40 02 35 05 =1654+866 18 52 21 56.0 -3.6 2.3 142.4 85 1458 02 33 41 02 35 05 PSJ1721+8842 18 52 21 54.3 -1.0 1.8 152.0 -27 1458 No stop 02 38 30 --- 18 55 46 54.3 -1.1 1.9 151.1 178 1471 02 35 06 02 38 30 J1639+8631 18 55 46 56.0 -3.6 2.4 141.5 -27 1471 No stop 02 40 00 =1654+866 18 57 16 55.9 -3.7 2.4 141.1 63 1477 02 38 31 02 40 00 PSJ1721+8842 18 57 16 54.3 -1.1 1.9 150.7 -27 1477 No stop 02 43 25 --- 19 00 42 54.3 -1.1 2.0 149.8 178 1490 02 40 01 02 44 10 J1639+8631 19 01 27 55.9 -3.8 2.5 140.0 17 1490 02 44 10 02 45 35 =1654+866 19 02 52 55.9 -3.8 2.5 139.6 85 1496 02 44 11 02 45 35 PSJ1721+8842 19 02 52 54.3 -1.1 2.0 149.3 -28 1496 No stop 02 49 00 --- 19 06 18 54.3 -1.2 2.0 148.4 177 1509 02 45 36 02 49 00 J1639+8631 19 06 18 55.9 -3.9 2.5 138.7 -28 1509 No stop 02 50 30 =1654+866 19 07 48 55.8 -3.9 2.6 138.3 62 1515 02 49 01 02 50 30 PSJ1721+8842 19 07 48 54.3 -1.2 2.1 148.0 -28 1515 No stop 02 53 55 --- 19 11 14 54.3 -1.2 2.1 147.1 177 1528 02 50 31 02 54 40 J1639+8631 19 11 59 55.8 -4.0 2.6 137.2 17 1528 02 54 40 02 56 05 =1654+866 19 13 24 55.8 -4.0 2.7 136.8 85 1534 02 54 41 02 56 05 PSJ1721+8842 19 13 24 54.3 -1.2 2.2 146.6 -28 1534 No stop 02 59 30 --- 19 16 50 54.3 -1.2 2.2 145.7 177 1547 02 56 06 02 59 30 J1639+8631 19 16 50 55.7 -4.1 2.7 135.9 -29 1547 No stop 03 01 00 =1654+866 19 18 20 55.7 -4.1 2.7 135.5 61 1553 02 59 31 03 01 00 PSJ1721+8842 19 18 20 54.2 -1.3 2.2 145.3 -29 1553 No stop 03 04 25 --- 19 21 45 54.2 -1.3 2.3 144.4 176 1566 03 01 01 03 05 10 J1639+8631 19 22 31 55.7 -4.2 2.8 134.4 16 1566 03 05 10 03 06 35 =1654+866 19 23 56 55.7 -4.2 2.8 134.0 85 1571 03 05 11 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 03 06 35 PSJ1721+8842 19 23 56 54.2 -1.3 2.3 143.9 -29 1571 No stop 03 10 00 --- 19 27 21 54.2 -1.3 2.4 143.0 176 1584 03 06 36 03 10 00 J1639+8631 19 27 21 55.6 -4.3 2.9 133.1 -29 1584 No stop 03 11 30 =1654+866 19 28 52 55.6 -4.3 2.9 132.7 61 1590 03 10 01 03 11 30 PSJ1721+8842 19 28 52 54.2 -1.3 2.4 142.6 -29 1590 No stop 03 14 55 --- 19 32 17 54.2 -1.4 2.5 141.7 176 1603 03 11 31 03 15 40 J1639+8631 19 33 02 55.6 -4.4 3.0 131.6 16 1603 03 15 40 03 17 05 =1654+866 19 34 28 55.6 -4.4 3.0 131.2 85 1609 03 15 41 03 17 05 PSJ1721+8842 19 34 28 54.2 -1.4 2.5 141.2 -29 1609 No stop 03 20 30 --- 19 37 53 54.2 -1.4 2.6 140.3 176 1622 03 17 06 03 20 30 J1639+8631 19 37 53 55.5 -4.5 3.1 130.3 -30 1622 No stop 03 22 00 =1654+866 19 39 23 55.5 -4.5 3.1 129.9 60 1628 03 20 31 03 22 00 PSJ1721+8842 19 39 23 54.2 -1.4 2.6 139.9 -30 1628 No stop 03 25 25 --- 19 42 49 54.2 -1.4 2.7 139.0 175 1641 03 22 01 03 26 10 J1639+8631 19 43 34 55.4 -4.6 3.2 128.8 15 1641 03 26 10 03 27 35 =1654+866 19 44 59 55.4 -4.6 3.2 128.4 85 1647 03 26 11 03 27 35 PSJ1721+8842 19 44 59 54.2 -1.5 2.7 138.5 -30 1647 No stop 03 31 00 --- 19 48 25 54.1 -1.5 2.7 137.6 175 1660 03 27 36 03 31 00 J1639+8631 19 48 25 55.4 -4.6 3.2 127.5 -30 1660 No stop 03 32 30 =1654+866 19 49 55 55.4 -4.7 3.3 127.2 60 1666 03 31 01 03 32 30 PSJ1721+8842 19 49 55 54.1 -1.5 2.8 137.2 -30 1666 No stop 03 35 55 --- 19 53 21 54.1 -1.5 2.8 136.4 175 1679 03 32 31 03 36 40 J1639+8631 19 54 06 55.3 -4.7 3.3 126.1 15 1679 03 36 40 03 38 05 =1654+866 19 55 31 55.3 -4.8 3.4 125.7 85 1684 03 36 41 03 38 05 PSJ1721+8842 19 55 31 54.1 -1.5 2.9 135.8 -30 1684 No stop 03 41 30 --- 19 58 57 54.1 -1.6 2.9 134.9 175 1698 03 38 06 03 41 30 J1639+8631 19 58 57 55.3 -4.8 3.4 124.8 -31 1698 No stop 03 43 00 =1654+866 20 00 27 55.2 -4.8 3.4 124.4 59 1703 03 41 31 03 43 00 PSJ1721+8842 20 00 27 54.1 -1.6 2.9 134.5 -31 1703 No stop 03 46 25 --- 20 03 52 54.1 -1.6 3.0 133.7 174 1717 03 43 01 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 03 47 10 J1639+8631 20 04 37 55.2 -4.9 3.5 123.3 14 1717 03 47 10 03 48 35 =1654+866 20 06 03 55.2 -4.9 3.5 122.9 85 1722 03 47 11 03 48 35 PSJ1721+8842 20 06 03 54.1 -1.6 3.0 133.1 -31 1722 No stop 03 52 00 --- 20 09 28 54.1 -1.6 3.1 132.2 174 1735 03 48 36 03 52 00 J1639+8631 20 09 28 55.1 -5.0 3.6 122.0 -31 1735 No stop 03 53 30 =1654+866 20 10 58 55.1 -5.0 3.6 121.6 59 1741 03 52 01 03 53 30 PSJ1721+8842 20 10 58 54.0 -1.6 3.1 131.9 -31 1741 No stop 03 56 55 --- 20 14 24 54.0 -1.7 3.2 131.0 174 1754 03 53 31 03 57 40 J1639+8631 20 15 09 55.0 -5.0 3.7 120.5 14 1754 03 57 40 03 59 05 =1654+866 20 16 34 55.0 -5.1 3.7 120.2 85 1760 03 57 41 03 59 05 PSJ1721+8842 20 16 34 54.0 -1.7 3.2 130.4 -31 1760 No stop 04 02 30 --- 20 20 00 54.0 -1.7 3.3 129.5 174 1773 03 59 06 04 02 30 J1639+8631 20 20 00 55.0 -5.1 3.8 119.3 -31 1773 No stop 04 04 00 =1654+866 20 21 30 55.0 -5.1 3.8 118.9 59 1779 04 02 31 04 04 00 PSJ1721+8842 20 21 30 54.0 -1.7 3.3 129.2 -31 1779 No stop 04 07 25 --- 20 24 56 54.0 -1.7 3.4 128.3 174 1792 04 04 01 04 08 10 J1639+8631 20 25 41 54.9 -5.2 3.9 117.8 14 1792 04 08 10 04 09 35 =1654+866 20 27 06 54.9 -5.2 3.9 117.4 85 1797 04 08 11 04 09 35 PSJ1721+8842 20 27 06 54.0 -1.7 3.4 127.7 -31 1797 No stop 04 13 00 --- 20 30 32 54.0 -1.8 3.4 126.9 174 1811 04 09 36 04 13 00 J1639+8631 20 30 32 54.8 -5.2 3.9 116.5 -32 1811 No stop 04 14 30 =1654+866 20 32 02 54.8 -5.3 4.0 116.2 58 1816 04 13 01 04 14 30 PSJ1721+8842 20 32 02 54.0 -1.8 3.5 126.5 -32 1816 No stop 04 17 55 --- 20 35 28 53.9 -1.8 3.5 125.6 173 1830 04 14 31 04 18 40 J1639+8631 20 36 13 54.8 -5.3 4.0 115.1 13 1830 04 18 40 04 20 05 =1654+866 20 37 38 54.7 -5.3 4.1 114.7 85 1835 04 18 41 04 20 05 PSJ1721+8842 20 37 38 53.9 -1.8 3.6 125.1 -32 1835 No stop 04 23 30 --- 20 41 03 53.9 -1.8 3.6 124.2 173 1848 04 20 06 04 23 30 J1639+8631 20 41 03 54.7 -5.4 4.1 113.8 -32 1848 No stop 04 25 00 =1654+866 20 42 34 54.7 -5.4 4.1 113.4 58 1854 04 23 31 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 04 25 00 PSJ1721+8842 20 42 34 53.9 -1.8 3.6 123.8 -32 1854 No stop 04 28 25 --- 20 45 59 53.9 -1.8 3.7 122.9 173 1867 04 25 01 04 29 10 J1639+8631 20 46 44 54.6 -5.4 4.2 112.4 13 1867 04 29 10 04 30 35 =1654+866 20 48 10 54.6 -5.4 4.2 112.0 85 1873 04 29 11 04 30 35 PSJ1721+8842 20 48 10 53.9 -1.9 3.7 122.4 -32 1873 No stop 04 34 00 --- 20 51 35 53.9 -1.9 3.8 121.5 173 1886 04 30 36 04 34 00 J1639+8631 20 51 35 54.5 -5.5 4.3 111.1 -32 1886 No stop 04 35 30 =1654+866 20 53 05 54.5 -5.5 4.3 110.7 58 1892 04 34 01 04 35 30 PSJ1721+8842 20 53 05 53.9 -1.9 3.8 121.1 -32 1892 No stop 04 38 55 --- 20 56 31 53.8 -1.9 3.9 120.3 173 1905 04 35 31 04 39 40 J1639+8631 20 57 16 54.5 -5.5 4.4 109.6 13 1905 04 39 40 04 41 05 =1654+866 20 58 41 54.4 -5.5 4.4 109.3 85 1910 04 39 41 04 41 05 PSJ1721+8842 20 58 41 53.8 -1.9 3.9 119.7 -32 1910 No stop 04 44 30 --- 21 02 07 53.8 -1.9 4.0 118.8 173 1924 04 41 06 04 44 30 J1639+8631 21 02 07 54.4 -5.6 4.5 108.4 -32 1924 No stop 04 46 00 =1654+866 21 03 37 54.4 -5.6 4.5 108.0 58 1929 04 44 31 04 46 00 PSJ1721+8842 21 03 37 53.8 -1.9 4.0 118.5 -32 1929 No stop 04 49 25 --- 21 07 03 53.8 -2.0 4.1 117.6 173 1943 04 46 01 04 50 10 J1639+8631 21 07 48 54.3 -5.6 4.6 107.0 13 1943 04 50 10 04 51 35 =1654+866 21 09 13 54.3 -5.6 4.6 106.6 85 1948 04 50 11 04 51 35 PSJ1721+8842 21 09 13 53.8 -2.0 4.1 117.0 -32 1948 No stop 04 55 00 --- 21 12 39 53.8 -2.0 4.1 116.2 173 1961 04 51 36 04 55 00 J1639+8631 21 12 39 54.2 -5.6 4.6 105.7 -32 1961 No stop 04 56 30 =1654+866 21 14 09 54.2 -5.7 4.7 105.3 58 1967 04 55 01 04 56 30 PSJ1721+8842 21 14 09 53.7 -2.0 4.2 115.8 -32 1967 No stop 04 59 55 --- 21 17 34 53.7 -2.0 4.2 114.9 173 1980 04 56 31 05 00 40 J1639+8631 21 18 20 54.2 -5.7 4.7 104.3 13 1980 05 00 40 05 02 05 =1654+866 21 19 45 54.1 -5.7 4.8 103.9 85 1986 05 00 41 05 02 05 PSJ1721+8842 21 19 45 53.7 -2.0 4.3 114.4 -32 1986 No stop 05 05 30 --- 21 23 10 53.7 -2.0 4.3 113.5 173 1999 05 02 06 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 05 05 30 J1639+8631 21 23 10 54.1 -5.7 4.8 103.0 -32 1999 No stop 05 07 00 =1654+866 21 24 41 54.1 -5.7 4.8 102.6 58 2005 05 05 31 05 07 00 PSJ1721+8842 21 24 41 53.7 -2.0 4.4 113.1 -32 2005 No stop 05 10 25 --- 21 28 06 53.7 -2.0 4.4 112.3 173 2018 05 07 01 05 11 10 J1639+8631 21 28 51 54.0 -5.7 4.9 101.6 13 2018 05 11 10 05 12 35 =1654+866 21 30 16 54.0 -5.7 4.9 101.2 85 2023 05 11 11 05 12 35 PSJ1721+8842 21 30 16 53.7 -2.0 4.4 111.7 -32 2023 No stop 05 16 00 --- 21 33 42 53.6 -2.1 4.5 110.8 173 2037 05 12 36 05 16 00 J1639+8631 21 33 42 53.9 -5.8 5.0 100.4 -32 2037 No stop 05 17 30 =1654+866 21 35 12 53.9 -5.8 5.0 100.0 58 2042 05 16 01 05 17 30 PSJ1721+8842 21 35 12 53.6 -2.1 4.5 110.5 -32 2042 No stop 05 20 55 --- 21 38 38 53.6 -2.1 4.6 109.6 173 2056 05 17 31 05 21 40 J1639+8631 21 39 23 53.8 -5.8 5.1 98.9 13 2056 05 21 40 05 23 05 =1654+866 21 40 48 53.8 -5.8 5.1 98.6 85 2061 05 21 41 05 23 05 PSJ1721+8842 21 40 48 53.6 -2.1 4.6 109.0 -32 2061 No stop 05 26 30 --- 21 44 14 53.6 -2.1 4.7 108.2 173 2074 05 23 06 05 26 30 J1639+8631 21 44 14 53.8 -5.8 5.2 97.7 -32 2074 No stop 05 28 00 =1654+866 21 45 44 53.7 -5.8 5.2 97.3 58 2080 05 26 31 05 28 00 PSJ1721+8842 21 45 44 53.6 -2.1 4.7 107.8 -32 2080 No stop 05 31 25 --- 21 49 10 53.6 -2.1 4.8 106.9 173 2093 05 28 01 05 32 10 J1639+8631 21 49 55 53.7 -5.8 5.3 96.3 13 2093 05 32 10 05 33 35 =1654+866 21 51 20 53.7 -5.8 5.3 95.9 85 2099 05 32 11 05 33 35 PSJ1721+8842 21 51 20 53.5 -2.1 4.8 106.4 -32 2099 No stop 05 37 00 --- 21 54 46 53.5 -2.1 4.9 105.5 173 2112 05 33 36 05 37 00 J1639+8631 21 54 46 53.6 -5.8 5.4 95.0 -32 2112 No stop 05 38 30 =1654+866 21 56 16 53.6 -5.8 5.4 94.7 58 2118 05 37 01 05 43 30 3C84 22 01 17 37.5 68.3 -5.3 -48.1 55 2118 05 43 30 05 48 30 --- 22 06 17 38.2 69.0 -5.2 -48.5 300 2137 05 43 31 05 53 30 J1639+8631 22 11 18 53.4 -5.9 5.6 90.9 52 2137 05 53 30 05 58 30 =1654+866 22 16 19 53.3 -5.9 5.7 89.6 300 2156 05 53 31 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 05 58 30 PSJ1721+8842 22 16 19 53.4 -2.2 5.2 100.1 -32 2156 No stop 06 01 55 --- 22 19 45 53.4 -2.2 5.3 99.2 173 2170 05 58 31 06 02 40 J1639+8631 22 20 30 53.2 -5.9 5.8 88.6 13 2170 06 02 40 06 04 05 =1654+866 22 21 55 53.2 -5.9 5.8 88.3 85 2175 06 02 41 06 04 05 PSJ1721+8842 22 21 55 53.4 -2.2 5.3 98.7 -32 2175 No stop 06 07 30 --- 22 25 21 53.4 -2.2 5.4 97.8 173 2188 06 04 06 06 07 30 J1639+8631 22 25 21 53.1 -5.9 5.9 87.4 -32 2188 No stop 06 09 00 =1654+866 22 26 51 53.1 -5.9 5.9 87.0 58 2194 06 07 31 06 09 00 PSJ1721+8842 22 26 51 53.3 -2.2 5.4 97.5 -32 2194 No stop 06 12 25 --- 22 30 16 53.3 -2.2 5.4 96.6 173 2207 06 09 01 06 13 10 J1639+8631 22 31 01 53.1 -5.8 6.0 86.0 13 2207 06 13 10 06 14 35 =1654+866 22 32 27 53.0 -5.8 6.0 85.6 85 2213 06 13 11 06 14 35 PSJ1721+8842 22 32 27 53.3 -2.2 5.5 96.1 -32 2213 No stop 06 18 00 --- 22 35 52 53.3 -2.2 5.5 95.2 173 2226 06 14 36 06 18 00 J1639+8631 22 35 52 53.0 -5.8 6.0 84.8 -32 2226 No stop 06 19 30 =1654+866 22 37 22 53.0 -5.8 6.1 84.4 58 2232 06 18 01 06 19 30 PSJ1721+8842 22 37 22 53.3 -2.2 5.6 94.8 -32 2232 No stop 06 22 55 --- 22 40 48 53.3 -2.2 5.6 94.0 173 2245 06 19 31 06 23 40 J1639+8631 22 41 33 52.9 -5.8 6.1 83.4 13 2245 06 23 40 06 25 05 =1654+866 22 42 58 52.9 -5.8 6.2 83.0 85 2250 06 23 41 06 25 05 PSJ1721+8842 22 42 58 53.3 -2.2 5.7 93.4 -32 2250 No stop 06 28 30 --- 22 46 24 53.2 -2.2 5.7 92.6 173 2264 06 25 06 06 28 30 J1639+8631 22 46 24 52.8 -5.8 6.2 82.2 -32 2264 No stop 06 30 00 =1654+866 22 47 54 52.8 -5.8 6.2 81.8 58 2269 06 28 31 06 30 00 PSJ1721+8842 22 47 54 53.2 -2.2 5.7 92.2 -32 2269 No stop 06 33 25 --- 22 51 20 53.2 -2.2 5.8 91.3 173 2283 06 30 01 06 34 10 J1639+8631 22 52 05 52.7 -5.8 6.3 80.8 13 2283 06 34 10 06 35 35 =1654+866 22 53 30 52.7 -5.8 6.3 80.4 85 2288 06 34 11 06 35 35 PSJ1721+8842 22 53 30 53.2 -2.2 5.8 90.8 -32 2288 No stop 06 39 00 --- 22 56 56 53.2 -2.2 5.9 89.9 173 2301 06 35 36 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 06 39 00 J1639+8631 22 56 56 52.7 -5.8 6.4 79.6 -32 2301 No stop 06 40 30 =1654+866 22 58 26 52.6 -5.8 6.4 79.2 58 2307 06 39 01 06 40 30 PSJ1721+8842 22 58 26 53.2 -2.2 5.9 89.5 -32 2307 No stop 06 43 55 --- 23 01 51 53.1 -2.2 6.0 88.7 173 2320 06 40 31 06 44 40 J1639+8631 23 02 37 52.6 -5.7 6.5 78.2 13 2320 06 44 40 06 46 05 =1654+866 23 04 02 52.6 -5.7 6.5 77.8 85 2326 06 44 41 06 46 05 PSJ1721+8842 23 04 02 53.1 -2.2 6.0 88.1 -32 2326 No stop 06 49 30 --- 23 07 27 53.1 -2.2 6.1 87.3 173 2339 06 46 06 06 49 30 J1639+8631 23 07 27 52.5 -5.7 6.6 77.0 -32 2339 No stop 06 51 00 =1654+866 23 08 58 52.5 -5.7 6.6 76.6 58 2345 06 49 31 06 51 00 PSJ1721+8842 23 08 58 53.1 -2.2 6.1 86.9 -32 2345 No stop 06 54 25 --- 23 12 23 53.1 -2.2 6.1 86.1 173 2358 06 51 01 06 55 10 J1639+8631 23 13 08 52.4 -5.7 6.7 75.6 13 2358 06 55 10 06 56 35 =1654+866 23 14 34 52.4 -5.7 6.7 75.3 85 2364 06 55 11 06 56 35 PSJ1721+8842 23 14 34 53.1 -2.2 6.2 85.5 -31 2364 No stop 07 00 00 --- 23 17 59 53.1 -2.2 6.2 84.7 174 2377 06 56 36 07 00 00 J1639+8631 23 17 59 52.3 -5.6 6.7 74.4 -31 2377 No stop 07 01 30 =1654+866 23 19 29 52.3 -5.6 6.8 74.1 59 2383 07 00 01 07 01 30 PSJ1721+8842 23 19 29 53.0 -2.2 6.3 84.3 -31 2383 No stop 07 04 55 --- 23 22 55 53.0 -2.2 6.3 83.4 174 2396 07 01 31 07 05 40 J1639+8631 23 23 40 52.3 -5.6 6.8 73.0 14 2396 07 05 40 07 07 05 =1654+866 23 25 05 52.2 -5.6 6.9 72.7 85 2401 07 05 41 07 07 05 PSJ1721+8842 23 25 05 53.0 -2.2 6.4 82.9 -31 2401 No stop 07 10 30 --- 23 28 31 53.0 -2.2 6.4 82.0 174 2414 07 07 06 07 10 30 J1639+8631 23 28 31 52.2 -5.6 6.9 71.9 -31 2414 No stop 07 12 00 =1654+866 23 30 01 52.2 -5.6 6.9 71.5 59 2420 07 10 31 07 12 00 PSJ1721+8842 23 30 01 53.0 -2.2 6.4 81.7 -31 2420 No stop 07 15 25 --- 23 33 27 53.0 -2.2 6.5 80.8 174 2433 07 12 01 07 16 10 J1639+8631 23 34 12 52.1 -5.5 7.0 70.5 14 2433 07 16 10 07 17 35 =1654+866 23 35 37 52.1 -5.5 7.0 70.1 85 2439 07 16 11 Schedule for DARNHALL (Code Da ) 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 29 May 2021 Day 149 --- 07 17 35 PSJ1721+8842 23 35 37 53.0 -2.2 6.5 80.3 -31 2439 No stop 07 21 00 --- 23 39 03 52.9 -2.2 6.6 79.4 174 2452 07 17 36 07 21 00 J1639+8631 23 39 03 52.0 -5.5 7.1 69.3 -31 2452 No stop 07 22 30 =1654+866 23 40 33 52.0 -5.5 7.1 68.9 59 2458 07 21 01 07 22 30 PSJ1721+8842 23 40 33 52.9 -2.2 6.6 79.1 -31 2458 No stop 07 25 55 --- 23 43 58 52.9 -2.2 6.7 78.2 174 2471 07 22 31 07 26 40 J1639+8631 23 44 44 52.0 -5.4 7.2 67.9 14 2471 07 26 40 07 28 05 =1654+866 23 46 09 51.9 -5.4 7.2 67.6 85 2477 07 26 41 07 28 05 PSJ1721+8842 23 46 09 52.9 -2.2 6.7 77.7 -31 2477 No stop 07 30 30 --- 23 48 34 52.9 -2.1 6.7 77.1 114 2486 07 28 06 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess221.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: 15 Station: DARNHALL 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: 14 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: 14 15 16 17 18 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) * PSJ1721+8842 18 08 47.084813 * 17 21 43.936000 17 03 39.644560 0.00 88 43 26.13207 * 88 42 21.42800 88 40 48.95086 0.00 From catalog imbedded in main SCHED input file. * 3C84 03 16 29.567265 * 03 19 48.160096 03 21 10.311462 1.50 J0319+4130 41 19 51.91692 * 41 30 42.10404 41 35 08.24304 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 41.277383 10.77 * J1639+8631 86 37 07.15444 * 86 31 53.13177 86 29 20.00418 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 43.226759 0.79 J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 13.08296 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 00.061697 0.65 J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 29.40943 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 7.158 942.437 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 3.313 410.527 3C345 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 11.321 3C454.3 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 11.521 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 69.7 3C84 24.0 J1639+8631 71.9 3C345 118.4 3C454.3 77.2 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