COVER INFORMATION Station: MEDICINA (Code Mc ) 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 MEDICINA (Code Mc ) 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 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 331.49 331.49 331.49 331.49 395.49 395.49 395.49 395.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 19 30 00 J1639+8631 12 42 50 46.3 364.3 -3.8 -119.2 0 0 19 30 00 19 31 30 =1654+866 12 44 20 46.3 364.3 -3.8 -119.6 90 12 19 30 01 19 31 30 PSJ1721+8842 12 44 20 45.1 361.7 -4.3 -114.0 -7 12 No stop 19 34 55 --- 12 47 45 45.1 361.7 -4.3 -114.8 198 38 19 31 31 19 35 40 J1639+8631 12 48 31 46.4 364.2 -3.8 -120.7 38 38 19 35 40 19 37 05 =1654+866 12 49 56 46.4 364.2 -3.7 -121.1 85 49 19 35 41 19 37 05 PSJ1721+8842 12 49 56 45.1 361.7 -4.2 -115.4 -7 49 No stop 19 40 30 --- 12 53 21 45.1 361.7 -4.2 -116.3 198 75 19 37 06 19 40 30 J1639+8631 12 53 21 46.5 364.2 -3.7 -121.9 -7 75 No stop 19 42 00 =1654+866 12 54 52 46.5 364.2 -3.6 -122.3 83 87 19 40 31 19 42 00 PSJ1721+8842 12 54 52 45.1 361.7 -4.1 -116.6 -7 87 No stop 19 45 25 --- 12 58 17 45.1 361.6 -4.1 -117.5 198 113 19 42 01 19 46 10 J1639+8631 12 59 02 46.5 364.1 -3.6 -123.4 38 113 19 46 10 19 47 35 =1654+866 13 00 27 46.5 364.1 -3.6 -123.8 85 124 19 46 11 19 47 35 PSJ1721+8842 13 00 27 45.2 361.6 -4.1 -118.0 -7 124 No stop 19 51 00 --- 13 03 53 45.2 361.6 -4.0 -118.9 198 151 19 47 36 19 51 00 J1639+8631 13 03 53 46.6 364.1 -3.5 -124.7 -7 151 No stop 19 52 30 =1654+866 13 05 23 46.6 364.0 -3.5 -125.0 83 162 19 51 01 19 52 30 PSJ1721+8842 13 05 23 45.2 361.6 -4.0 -119.3 -7 162 No stop 19 55 55 --- 13 08 49 45.2 361.6 -3.9 -120.2 198 189 19 52 31 19 56 40 J1639+8631 13 09 34 46.7 364.0 -3.4 -126.1 37 189 19 56 40 19 58 05 =1654+866 13 10 59 46.7 364.0 -3.4 -126.5 85 200 19 56 41 19 58 05 PSJ1721+8842 13 10 59 45.2 361.6 -3.9 -120.7 -8 200 No stop 20 01 30 --- 13 14 25 45.2 361.6 -3.8 -121.6 197 226 19 58 06 20 01 30 J1639+8631 13 14 25 46.7 363.9 -3.3 -127.4 -8 226 No stop 20 03 00 =1654+866 13 15 55 46.7 363.9 -3.3 -127.8 82 238 20 01 31 20 03 00 PSJ1721+8842 13 15 55 45.2 361.6 -3.8 -122.0 -8 238 No stop 20 06 25 --- 13 19 21 45.2 361.6 -3.7 -122.8 197 264 20 03 01 Schedule for MEDICINA (Code Mc ) 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 13 20 06 46.8 363.8 -3.2 -128.9 37 264 20 07 10 20 08 35 =1654+866 13 21 31 46.8 363.8 -3.2 -129.2 85 275 20 07 11 20 08 35 PSJ1721+8842 13 21 31 45.3 361.5 -3.7 -123.4 -8 275 No stop 20 12 00 --- 13 24 57 45.3 361.5 -3.6 -124.2 197 301 20 08 36 20 12 00 J1639+8631 13 24 57 46.8 363.8 -3.1 -130.1 -8 301 No stop 20 13 30 =1654+866 13 26 27 46.9 363.7 -3.1 -130.5 82 313 20 12 01 20 13 30 PSJ1721+8842 13 26 27 45.3 361.5 -3.6 -124.6 -8 313 No stop 20 16 55 --- 13 29 52 45.3 361.5 -3.6 -125.5 197 339 20 13 31 20 17 40 J1639+8631 13 30 37 46.9 363.7 -3.1 -131.6 37 339 20 17 40 20 19 05 =1654+866 13 32 03 46.9 363.7 -3.0 -132.0 85 350 20 17 41 20 19 05 PSJ1721+8842 13 32 03 45.3 361.5 -3.5 -126.0 -8 350 No stop 20 22 30 --- 13 35 28 45.3 361.5 -3.5 -126.9 197 377 20 19 06 20 22 30 J1639+8631 13 35 28 47.0 363.6 -3.0 -132.9 -8 377 No stop 20 24 00 =1654+866 13 36 58 47.0 363.6 -2.9 -133.3 82 388 20 22 31 20 24 00 PSJ1721+8842 13 36 58 45.3 361.5 -3.4 -127.3 -8 388 No stop 20 27 25 --- 13 40 24 45.3 361.5 -3.4 -128.2 197 415 20 24 01 20 28 10 J1639+8631 13 41 09 47.0 363.5 -2.9 -134.3 37 415 20 28 10 20 29 35 =1654+866 13 42 34 47.0 363.5 -2.9 -134.7 85 426 20 28 11 20 29 35 PSJ1721+8842 13 42 34 45.4 361.4 -3.4 -128.7 -8 426 No stop 20 33 00 --- 13 46 00 45.4 361.4 -3.3 -129.6 197 452 20 29 36 20 33 00 J1639+8631 13 46 00 47.1 363.4 -2.8 -135.6 -8 452 No stop 20 34 30 =1654+866 13 47 30 47.1 363.4 -2.8 -136.0 82 464 20 33 01 20 34 30 PSJ1721+8842 13 47 30 45.4 361.4 -3.3 -130.0 -8 464 No stop 20 37 55 --- 13 50 56 45.4 361.4 -3.2 -130.8 197 490 20 34 31 20 38 40 J1639+8631 13 51 41 47.1 363.4 -2.7 -137.1 37 490 20 38 40 20 40 05 =1654+866 13 53 06 47.2 363.3 -2.7 -137.5 85 501 20 38 41 20 40 05 PSJ1721+8842 13 53 06 45.4 361.4 -3.2 -131.4 -8 501 No stop 20 43 30 --- 13 56 32 45.4 361.4 -3.1 -132.2 197 528 20 40 06 20 43 30 J1639+8631 13 56 32 47.2 363.3 -2.6 -138.4 -8 528 No stop 20 45 00 =1654+866 13 58 02 47.2 363.2 -2.6 -138.8 82 539 20 43 31 Schedule for MEDICINA (Code Mc ) 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 58 02 45.4 361.4 -3.1 -132.6 -8 539 No stop 20 48 25 --- 14 01 27 45.4 361.3 -3.0 -133.5 197 566 20 45 01 20 49 10 J1639+8631 14 02 13 47.2 363.2 -2.5 -139.9 37 566 20 49 10 20 50 35 =1654+866 14 03 38 47.3 363.2 -2.5 -140.2 85 576 20 49 11 20 50 35 PSJ1721+8842 14 03 38 45.4 361.3 -3.0 -134.1 -8 576 No stop 20 54 00 --- 14 07 03 45.5 361.3 -2.9 -134.9 197 603 20 50 36 20 54 00 J1639+8631 14 07 03 47.3 363.1 -2.4 -141.1 -8 603 No stop 20 55 30 =1654+866 14 08 34 47.3 363.1 -2.4 -141.5 82 614 20 54 01 21 00 30 3C345 14 13 34 62.0 446.5 -2.5 -67.8 186 614 21 00 30 21 05 30 --- 14 18 35 62.9 447.3 -2.4 -67.9 300 653 21 00 31 21 10 30 J1639+8631 14 23 36 47.4 362.8 -2.2 -145.5 184 653 21 10 30 21 15 30 =1654+866 14 28 37 47.5 362.7 -2.1 -146.8 300 692 21 10 31 21 15 30 PSJ1721+8842 14 28 37 45.5 361.2 -2.6 -140.4 -9 692 No stop 21 18 55 --- 14 32 03 45.6 361.2 -2.5 -141.3 196 718 21 15 31 21 19 40 J1639+8631 14 32 48 47.5 362.6 -2.0 -147.9 36 718 21 19 40 21 21 05 =1654+866 14 34 13 47.5 362.6 -2.0 -148.3 85 729 21 19 41 21 21 05 PSJ1721+8842 14 34 13 45.6 361.1 -2.5 -141.8 -9 729 No stop 21 24 30 --- 14 37 38 45.6 361.1 -2.4 -142.7 196 756 21 21 06 21 24 30 J1639+8631 14 37 38 47.6 362.5 -1.9 -149.2 -9 756 No stop 21 26 00 =1654+866 14 39 09 47.6 362.5 -1.9 -149.6 81 767 21 24 31 21 26 00 PSJ1721+8842 14 39 09 45.6 361.1 -2.4 -143.1 -9 767 No stop 21 29 25 --- 14 42 34 45.6 361.1 -2.4 -144.0 196 794 21 26 01 21 30 10 J1639+8631 14 43 19 47.6 362.4 -1.8 -150.7 36 794 21 30 10 21 31 35 =1654+866 14 44 45 47.6 362.4 -1.8 -151.0 85 804 21 30 11 21 31 35 PSJ1721+8842 14 44 45 45.6 361.1 -2.3 -144.5 -9 804 No stop 21 35 00 --- 14 48 10 45.6 361.1 -2.3 -145.4 196 831 21 31 36 21 35 00 J1639+8631 14 48 10 47.6 362.3 -1.8 -152.0 -9 831 No stop 21 36 30 =1654+866 14 49 40 47.7 362.3 -1.7 -152.3 81 842 21 35 01 21 36 30 PSJ1721+8842 14 49 40 45.6 361.0 -2.2 -145.8 -9 842 No stop 21 39 55 --- 14 53 06 45.6 361.0 -2.2 -146.6 196 869 21 36 31 Schedule for MEDICINA (Code Mc ) 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 14 53 51 47.7 362.2 -1.7 -153.5 36 869 21 40 40 21 42 05 =1654+866 14 55 16 47.7 362.2 -1.6 -153.8 85 880 21 40 41 21 42 05 PSJ1721+8842 14 55 16 45.6 361.0 -2.1 -147.2 -9 880 No stop 21 45 30 --- 14 58 42 45.6 361.0 -2.1 -148.1 196 906 21 42 06 21 45 30 J1639+8631 14 58 42 47.7 362.1 -1.6 -154.7 -9 906 No stop 21 47 00 =1654+866 15 00 12 47.7 362.1 -1.6 -155.1 81 918 21 45 31 21 47 00 PSJ1721+8842 15 00 12 45.6 361.0 -2.1 -148.4 -9 918 No stop 21 50 25 --- 15 03 38 45.7 360.9 -2.0 -149.3 196 944 21 47 01 21 51 10 J1639+8631 15 04 23 47.8 362.0 -1.5 -156.2 36 944 21 51 10 21 52 35 =1654+866 15 05 48 47.8 362.0 -1.5 -156.6 85 955 21 51 11 21 52 35 PSJ1721+8842 15 05 48 45.7 360.9 -2.0 -149.9 -9 955 No stop 21 56 00 --- 15 09 14 45.7 360.9 -1.9 -150.8 196 982 21 52 36 21 56 00 J1639+8631 15 09 14 47.8 361.9 -1.4 -157.5 -9 982 No stop 21 57 30 =1654+866 15 10 44 47.8 361.8 -1.4 -157.9 81 993 21 56 01 21 57 30 PSJ1721+8842 15 10 44 45.7 360.9 -1.9 -151.1 -9 993 No stop 22 00 55 --- 15 14 09 45.7 360.9 -1.8 -152.0 196 1020 21 57 31 22 01 40 J1639+8631 15 14 55 47.8 361.8 -1.3 -159.0 36 1020 22 01 40 22 03 05 =1654+866 15 16 20 47.8 361.7 -1.3 -159.4 85 1031 22 01 41 22 03 05 PSJ1721+8842 15 16 20 45.7 360.9 -1.8 -152.6 -9 1031 No stop 22 06 30 --- 15 19 45 45.7 360.8 -1.7 -153.4 196 1057 22 03 06 22 06 30 J1639+8631 15 19 45 47.8 361.7 -1.2 -160.3 -9 1057 No stop 22 08 00 =1654+866 15 21 16 47.8 361.6 -1.2 -160.7 81 1069 22 06 31 22 08 00 PSJ1721+8842 15 21 16 45.7 360.8 -1.7 -153.8 -9 1069 No stop 22 11 25 --- 15 24 41 45.7 360.8 -1.6 -154.7 196 1095 22 08 01 22 12 10 J1639+8631 15 25 26 47.9 361.5 -1.1 -161.8 36 1095 22 12 10 22 13 35 =1654+866 15 26 51 47.9 361.5 -1.1 -162.2 85 1106 22 12 11 22 13 35 PSJ1721+8842 15 26 51 45.7 360.8 -1.6 -155.3 -9 1106 No stop 22 17 00 --- 15 30 17 45.7 360.7 -1.6 -156.1 196 1132 22 13 36 22 17 00 J1639+8631 15 30 17 47.9 361.4 -1.1 -163.1 -9 1132 No stop 22 18 30 =1654+866 15 31 47 47.9 361.4 -1.0 -163.5 81 1144 22 17 01 Schedule for MEDICINA (Code Mc ) 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 15 31 47 45.7 360.7 -1.5 -156.5 -9 1144 No stop 22 21 55 --- 15 35 13 45.7 360.7 -1.5 -157.4 196 1170 22 18 31 22 22 40 J1639+8631 15 35 58 47.9 361.3 -1.0 -164.6 36 1170 22 22 40 22 24 05 =1654+866 15 37 23 47.9 361.3 -0.9 -165.0 85 1181 22 22 41 22 24 05 PSJ1721+8842 15 37 23 45.7 360.7 -1.4 -157.9 -9 1181 No stop 22 27 30 --- 15 40 49 45.8 360.7 -1.4 -158.8 196 1208 22 24 06 22 27 30 J1639+8631 15 40 49 47.9 361.2 -0.9 -165.9 -9 1208 No stop 22 29 00 =1654+866 15 42 19 47.9 361.2 -0.9 -166.3 81 1219 22 27 31 22 29 00 PSJ1721+8842 15 42 19 45.8 360.7 -1.4 -159.2 -9 1219 No stop 22 32 25 --- 15 45 45 45.8 360.6 -1.3 -160.1 196 1246 22 29 01 22 33 10 J1639+8631 15 46 30 48.0 361.1 -0.8 -167.4 36 1246 22 33 10 22 34 35 =1654+866 15 47 55 48.0 361.0 -0.8 -167.8 85 1257 22 33 11 22 34 35 PSJ1721+8842 15 47 55 45.8 360.6 -1.3 -160.6 -9 1257 No stop 22 38 00 --- 15 51 20 45.8 360.6 -1.2 -161.5 196 1283 22 34 36 22 38 00 J1639+8631 15 51 20 48.0 361.0 -0.7 -168.7 -9 1283 No stop 22 39 30 =1654+866 15 52 51 48.0 360.9 -0.7 -169.1 81 1295 22 38 01 22 39 30 PSJ1721+8842 15 52 51 45.8 360.6 -1.2 -161.9 -9 1295 No stop 22 42 55 --- 15 56 16 45.8 360.5 -1.1 -162.8 196 1321 22 39 31 22 43 40 J1639+8631 15 57 01 48.0 360.8 -0.6 -170.2 36 1321 22 43 40 22 45 05 =1654+866 15 58 27 48.0 360.8 -0.6 -170.6 85 1332 22 43 41 22 45 05 PSJ1721+8842 15 58 27 45.8 360.5 -1.1 -163.3 -9 1332 No stop 22 48 30 --- 16 01 52 45.8 360.5 -1.0 -164.2 196 1358 22 45 06 22 48 30 J1639+8631 16 01 52 48.0 360.7 -0.5 -171.5 -9 1358 No stop 22 50 00 =1654+866 16 03 22 48.0 360.7 -0.5 -171.9 81 1370 22 48 31 22 50 00 PSJ1721+8842 16 03 22 45.8 360.5 -1.0 -164.6 -9 1370 No stop 22 53 25 --- 16 06 48 45.8 360.5 -0.9 -165.5 196 1396 22 50 01 22 54 10 J1639+8631 16 07 33 48.0 360.6 -0.4 -173.0 36 1396 22 54 10 22 55 35 =1654+866 16 08 58 48.0 360.6 -0.4 -173.4 85 1407 22 54 11 22 55 35 PSJ1721+8842 16 08 58 45.8 360.4 -0.9 -166.0 -9 1407 No stop 22 59 00 --- 16 12 24 45.8 360.4 -0.9 -166.9 196 1434 22 55 36 Schedule for MEDICINA (Code Mc ) 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 16 12 24 48.0 360.5 -0.4 -174.3 -9 1434 No stop 23 00 30 =1654+866 16 13 54 48.0 360.5 -0.3 -174.7 81 1445 22 59 01 23 00 30 PSJ1721+8842 16 13 54 45.8 360.4 -0.8 -167.3 -9 1445 No stop 23 03 55 --- 16 17 20 45.8 360.4 -0.8 -168.1 196 1472 23 00 31 23 04 40 J1639+8631 16 18 05 48.0 360.4 -0.3 -175.8 36 1472 23 04 40 23 06 05 =1654+866 16 19 30 48.0 360.3 -0.2 -176.2 85 1483 23 04 41 23 06 05 PSJ1721+8842 16 19 30 45.8 360.4 -0.7 -168.7 -9 1483 No stop 23 09 30 --- 16 22 56 45.8 360.3 -0.7 -169.6 196 1509 23 06 06 23 09 30 J1639+8631 16 22 56 48.0 360.2 -0.2 -177.1 -9 1509 No stop 23 11 00 =1654+866 16 24 26 48.0 360.2 -0.2 -177.5 81 1521 23 09 31 23 11 00 PSJ1721+8842 16 24 26 45.8 360.3 -0.7 -170.0 -9 1521 No stop 23 14 25 --- 16 27 51 45.8 360.3 -0.6 -170.8 196 1547 23 11 01 23 15 10 J1639+8631 16 28 37 48.0 360.1 -0.1 -178.6 36 1547 23 15 10 23 16 35 =1654+866 16 30 02 48.0 360.1 -0.1 -179.0 85 1558 23 15 11 23 16 35 PSJ1721+8842 16 30 02 45.8 360.3 -0.6 -171.4 -9 1558 No stop 23 20 00 --- 16 33 27 45.8 360.2 -0.5 -172.3 196 1584 23 16 36 23 20 00 J1639+8631 16 33 27 48.0 360.0 -0.0 -179.9 -9 1584 No stop 23 21 30 =1654+866 16 34 58 48.0 360.0 0.0 179.7 81 1596 23 20 01 23 21 30 PSJ1721+8842 16 34 58 45.8 360.2 -0.5 -172.7 -9 1596 No stop 23 24 55 --- 16 38 23 45.8 360.2 -0.4 -173.5 196 1622 23 21 31 23 25 40 J1639+8631 16 39 08 48.0 359.9 0.1 178.5 36 1622 23 25 40 23 27 05 =1654+866 16 40 34 48.0 359.8 0.1 178.2 85 1633 23 25 41 23 27 05 PSJ1721+8842 16 40 34 45.8 360.2 -0.4 -174.1 -9 1633 No stop 23 30 30 --- 16 43 59 45.8 360.2 -0.3 -175.0 196 1660 23 27 06 23 30 30 J1639+8631 16 43 59 48.0 359.8 0.2 177.3 -9 1660 No stop 23 32 00 =1654+866 16 45 29 48.0 359.7 0.2 176.9 81 1671 23 30 31 23 32 00 PSJ1721+8842 16 45 29 45.8 360.2 -0.3 -175.4 -9 1671 No stop 23 35 25 --- 16 48 55 45.8 360.1 -0.2 -176.2 196 1698 23 32 01 23 36 10 J1639+8631 16 49 40 48.0 359.6 0.3 175.7 36 1698 23 36 10 23 37 35 =1654+866 16 51 05 48.0 359.6 0.3 175.4 85 1709 23 36 11 Schedule for MEDICINA (Code Mc ) 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 16 51 05 45.8 360.1 -0.2 -176.8 -9 1709 No stop 23 41 00 --- 16 54 31 45.8 360.1 -0.2 -177.7 196 1735 23 37 36 23 41 00 J1639+8631 16 54 31 48.0 359.5 0.3 174.4 -9 1735 No stop 23 42 30 =1654+866 16 56 01 48.0 359.5 0.4 174.0 81 1747 23 41 01 23 42 30 PSJ1721+8842 16 56 01 45.8 360.1 -0.1 -178.0 -9 1747 No stop 23 45 55 --- 16 59 27 45.8 360.0 -0.1 -178.9 196 1773 23 42 31 23 46 40 J1639+8631 17 00 12 48.0 359.4 0.4 172.9 36 1773 23 46 40 23 48 05 =1654+866 17 01 37 48.0 359.4 0.5 172.6 85 1784 23 46 41 23 48 05 PSJ1721+8842 17 01 37 45.8 360.0 -0.0 -179.5 -9 1784 No stop 23 51 30 --- 17 05 03 45.8 360.0 0.0 179.6 196 1811 23 48 06 23 51 30 J1639+8631 17 05 03 48.0 359.3 0.5 171.6 -9 1811 No stop 23 53 00 =1654+866 17 06 33 48.0 359.3 0.5 171.2 81 1822 23 51 31 23 53 00 PSJ1721+8842 17 06 33 45.8 360.0 0.0 179.3 -9 1822 No stop 23 56 25 --- 17 09 58 45.8 359.9 0.1 178.4 196 1849 23 53 01 23 57 10 J1639+8631 17 10 43 48.0 359.2 0.6 170.1 36 1849 23 57 10 23 58 35 =1654+866 17 12 09 48.0 359.1 0.6 169.8 85 1860 23 57 11 --- Start: Fri 28 May 2021 Day 148 -- Stop: Sat 29 May 2021 Day 149 --- 23 58 35 PSJ1721+8842 17 12 09 45.8 359.9 0.1 177.8 -9 1860 No stop 00 02 00 --- 17 15 34 45.8 359.9 0.2 177.0 196 1886 23 58 36 00 02 00 J1639+8631 17 15 34 48.0 359.0 0.7 168.8 -9 1886 No stop 00 03 30 =1654+866 17 17 05 48.0 359.0 0.7 168.4 81 1898 00 02 01 00 03 30 PSJ1721+8842 17 17 05 45.8 359.9 0.2 176.6 -9 1898 No stop 00 06 55 --- 17 20 30 45.8 359.9 0.3 175.7 196 1924 00 03 31 00 07 40 J1639+8631 17 21 15 48.0 358.9 0.8 167.3 36 1924 00 07 40 00 09 05 =1654+866 17 22 40 47.9 358.9 0.8 167.0 85 1935 00 07 41 00 09 05 PSJ1721+8842 17 22 40 45.8 359.8 0.3 175.1 -9 1935 No stop 00 12 30 --- 17 26 06 45.8 359.8 0.4 174.3 196 1961 00 09 06 00 12 30 J1639+8631 17 26 06 47.9 358.8 0.9 166.0 -9 1961 No stop 00 14 00 =1654+866 17 27 36 47.9 358.8 0.9 165.6 81 1973 00 12 31 Schedule for MEDICINA (Code Mc ) 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 17 27 36 45.8 359.8 0.4 173.9 -9 1973 No stop 00 17 25 --- 17 31 02 45.8 359.8 0.5 173.0 196 1999 00 14 01 00 18 10 J1639+8631 17 31 47 47.9 358.7 1.0 164.5 36 1999 00 18 10 00 19 35 =1654+866 17 33 12 47.9 358.7 1.0 164.2 85 2010 00 18 11 00 19 35 PSJ1721+8842 17 33 12 45.8 359.8 0.5 172.4 -9 2010 No stop 00 23 00 --- 17 36 38 45.8 359.7 0.5 171.6 196 2037 00 19 36 00 23 00 J1639+8631 17 36 38 47.9 358.6 1.0 163.2 -9 2037 No stop 00 24 30 =1654+866 17 38 08 47.9 358.5 1.1 162.8 81 2048 00 23 01 00 24 30 PSJ1721+8842 17 38 08 45.8 359.7 0.6 171.2 -9 2048 No stop 00 27 55 --- 17 41 34 45.8 359.7 0.6 170.3 196 2075 00 24 31 00 28 40 J1639+8631 17 42 19 47.9 358.5 1.1 161.7 36 2075 00 28 40 00 30 05 =1654+866 17 43 44 47.9 358.4 1.2 161.4 85 2086 00 28 41 00 30 05 PSJ1721+8842 17 43 44 45.8 359.7 0.7 169.7 -9 2086 No stop 00 33 30 --- 17 47 09 45.8 359.6 0.7 168.9 196 2112 00 30 06 00 33 30 J1639+8631 17 47 09 47.8 358.4 1.2 160.4 -9 2112 No stop 00 35 00 =1654+866 17 48 40 47.8 358.3 1.2 160.0 81 2124 00 33 31 00 35 00 PSJ1721+8842 17 48 40 45.8 359.6 0.8 168.5 -9 2124 No stop 00 38 25 --- 17 52 05 45.8 359.6 0.8 167.6 196 2150 00 35 01 00 39 10 J1639+8631 17 52 50 47.8 358.2 1.3 158.9 36 2150 00 39 10 00 40 35 =1654+866 17 54 16 47.8 358.2 1.3 158.6 85 2161 00 39 11 00 40 35 PSJ1721+8842 17 54 16 45.8 359.6 0.8 167.1 -9 2161 No stop 00 44 00 --- 17 57 41 45.8 359.6 0.9 166.2 196 2187 00 40 36 00 44 00 J1639+8631 17 57 41 47.8 358.1 1.4 157.6 -9 2187 No stop 00 45 30 =1654+866 17 59 11 47.8 358.1 1.4 157.3 81 2199 00 44 01 00 45 30 PSJ1721+8842 17 59 11 45.8 359.5 0.9 165.8 -9 2199 No stop 00 48 55 --- 18 02 37 45.8 359.5 1.0 164.9 196 2225 00 45 31 00 49 40 J1639+8631 18 03 22 47.7 358.0 1.5 156.1 36 2225 00 49 40 00 51 05 =1654+866 18 04 47 47.7 358.0 1.5 155.8 85 2236 00 49 41 00 51 05 PSJ1721+8842 18 04 47 45.8 359.5 1.0 164.4 -9 2236 No stop 00 54 30 --- 18 08 13 45.8 359.5 1.1 163.5 196 2263 00 51 06 Schedule for MEDICINA (Code Mc ) 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 18 08 13 47.7 357.9 1.6 154.9 -8 2263 No stop 00 56 00 =1654+866 18 09 43 47.7 357.9 1.6 154.5 82 2274 00 54 31 00 56 00 PSJ1721+8842 18 09 43 45.8 359.5 1.1 163.1 -8 2274 No stop 00 59 25 --- 18 13 09 45.8 359.4 1.2 162.2 197 2301 00 56 01 01 00 10 J1639+8631 18 13 54 47.7 357.8 1.7 153.4 37 2301 01 00 10 01 01 35 =1654+866 18 15 19 47.7 357.8 1.7 153.0 85 2312 01 00 11 01 01 35 PSJ1721+8842 18 15 19 45.8 359.4 1.2 161.7 -8 2312 No stop 01 05 00 --- 18 18 45 45.8 359.4 1.3 160.8 197 2338 01 01 36 01 05 00 J1639+8631 18 18 45 47.6 357.7 1.8 152.1 -8 2338 No stop 01 06 30 =1654+866 18 20 15 47.6 357.7 1.8 151.7 82 2350 01 05 01 01 06 30 PSJ1721+8842 18 20 15 45.8 359.4 1.3 160.4 -8 2350 No stop 01 09 55 --- 18 23 40 45.8 359.4 1.3 159.5 197 2376 01 06 31 01 10 40 J1639+8631 18 24 26 47.6 357.6 1.8 150.6 37 2376 01 10 40 01 12 05 =1654+866 18 25 51 47.6 357.6 1.9 150.2 85 2387 01 10 41 01 12 05 PSJ1721+8842 18 25 51 45.8 359.3 1.4 159.0 -8 2387 No stop 01 15 30 --- 18 29 16 45.7 359.3 1.4 158.1 197 2413 01 12 06 01 15 30 J1639+8631 18 29 16 47.6 357.5 1.9 149.3 -8 2413 No stop 01 17 00 =1654+866 18 30 47 47.6 357.5 2.0 148.9 82 2425 01 15 31 01 17 00 PSJ1721+8842 18 30 47 45.7 359.3 1.5 157.7 -8 2425 No stop 01 20 25 --- 18 34 12 45.7 359.3 1.5 156.8 197 2451 01 17 01 01 21 10 J1639+8631 18 34 57 47.5 357.4 2.0 147.8 37 2451 01 21 10 01 22 35 =1654+866 18 36 23 47.5 357.3 2.0 147.4 85 2462 01 21 11 01 22 35 PSJ1721+8842 18 36 23 45.7 359.3 1.5 156.3 -8 2462 No stop 01 26 00 --- 18 39 48 45.7 359.2 1.6 155.4 197 2489 01 22 36 01 26 00 J1639+8631 18 39 48 47.5 357.3 2.1 146.5 -8 2489 No stop 01 27 30 =1654+866 18 41 18 47.5 357.3 2.1 146.1 82 2500 01 26 01 01 32 30 3C454.3 18 46 19 31.1 457.7 -4.1 -47.4 163 2500 01 32 30 01 37 30 --- 18 51 20 31.9 458.6 -4.1 -47.2 300 2539 01 32 31 01 42 30 J1639+8631 18 56 21 47.3 357.0 2.4 142.2 161 2539 01 42 30 01 47 30 =1654+866 19 01 22 47.3 356.9 2.5 140.8 300 2578 01 42 31 Schedule for MEDICINA (Code Mc ) 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 19 01 22 45.7 359.1 2.0 149.9 -8 2578 No stop 01 50 55 --- 19 04 47 45.7 359.0 2.0 149.0 197 2604 01 47 31 01 51 40 J1639+8631 19 05 32 47.2 356.8 2.5 139.8 37 2604 01 51 40 01 53 05 =1654+866 19 06 58 47.2 356.8 2.6 139.4 85 2615 01 51 41 01 53 05 PSJ1721+8842 19 06 58 45.6 359.0 2.1 148.5 -8 2615 No stop 01 56 30 --- 19 10 23 45.6 359.0 2.1 147.6 197 2641 01 53 06 01 56 30 J1639+8631 19 10 23 47.2 356.7 2.6 138.5 -8 2641 No stop 01 58 00 =1654+866 19 11 53 47.2 356.7 2.6 138.1 82 2653 01 56 31 01 58 00 PSJ1721+8842 19 11 53 45.6 359.0 2.1 147.2 -8 2653 No stop 02 01 25 --- 19 15 19 45.6 359.0 2.2 146.4 197 2679 01 58 01 02 02 10 J1639+8631 19 16 04 47.1 356.6 2.7 137.0 37 2679 02 02 10 02 03 35 =1654+866 19 17 29 47.1 356.6 2.7 136.6 85 2690 02 02 11 02 03 35 PSJ1721+8842 19 17 29 45.6 359.0 2.2 145.8 -8 2690 No stop 02 07 00 --- 19 20 55 45.6 358.9 2.3 144.9 197 2717 02 03 36 02 07 00 J1639+8631 19 20 55 47.1 356.6 2.8 135.7 -8 2717 No stop 02 08 30 =1654+866 19 22 25 47.1 356.5 2.8 135.3 82 2728 02 07 01 02 08 30 PSJ1721+8842 19 22 25 45.6 358.9 2.3 144.6 -8 2728 No stop 02 11 55 --- 19 25 51 45.6 358.9 2.4 143.7 197 2755 02 08 31 02 12 40 J1639+8631 19 26 36 47.0 356.5 2.9 134.2 37 2755 02 12 40 02 14 05 =1654+866 19 28 01 47.0 356.5 2.9 133.9 85 2766 02 12 41 02 14 05 PSJ1721+8842 19 28 01 45.6 358.9 2.4 143.1 -7 2766 No stop 02 17 30 --- 19 31 27 45.6 358.9 2.5 142.3 198 2792 02 14 06 02 17 30 J1639+8631 19 31 27 47.0 356.4 3.0 133.0 -7 2792 No stop 02 19 00 =1654+866 19 32 57 47.0 356.4 3.0 132.6 83 2804 02 17 31 02 19 00 PSJ1721+8842 19 32 57 45.6 358.9 2.5 141.9 -7 2804 No stop 02 22 25 --- 19 36 22 45.6 358.8 2.5 141.0 198 2830 02 19 01 02 23 10 J1639+8631 19 37 07 46.9 356.3 3.1 131.5 38 2830 02 23 10 02 24 35 =1654+866 19 38 33 46.9 356.3 3.1 131.1 85 2841 02 23 11 02 24 35 PSJ1721+8842 19 38 33 45.5 358.8 2.6 140.4 -7 2841 No stop 02 28 00 --- 19 41 58 45.5 358.8 2.6 139.6 198 2868 02 24 36 Schedule for MEDICINA (Code Mc ) 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 19 41 58 46.9 356.2 3.1 130.2 -7 2868 No stop 02 29 30 =1654+866 19 43 29 46.8 356.2 3.2 129.8 83 2879 02 28 01 02 29 30 PSJ1721+8842 19 43 29 45.5 358.8 2.7 139.2 -7 2879 No stop 02 32 55 --- 19 46 54 45.5 358.8 2.7 138.3 198 2906 02 29 31 02 33 40 J1639+8631 19 47 39 46.8 356.2 3.2 128.8 38 2906 02 33 40 02 35 05 =1654+866 19 49 04 46.8 356.1 3.3 128.4 85 2916 02 33 41 02 35 05 PSJ1721+8842 19 49 04 45.5 358.8 2.8 137.8 -7 2916 No stop 02 38 30 --- 19 52 30 45.5 358.7 2.8 136.9 198 2943 02 35 06 02 38 30 J1639+8631 19 52 30 46.7 356.1 3.3 127.5 -7 2943 No stop 02 40 00 =1654+866 19 54 00 46.7 356.1 3.3 127.1 83 2954 02 38 31 02 40 00 PSJ1721+8842 19 54 00 45.5 358.7 2.8 136.5 -7 2954 No stop 02 43 25 --- 19 57 26 45.5 358.7 2.9 135.6 198 2981 02 40 01 02 44 10 J1639+8631 19 58 11 46.7 356.0 3.4 126.0 38 2981 02 44 10 02 45 35 =1654+866 19 59 36 46.6 356.0 3.4 125.7 85 2992 02 44 11 02 45 35 PSJ1721+8842 19 59 36 45.5 358.7 2.9 135.1 -8 2992 No stop 02 49 00 --- 20 03 02 45.4 358.7 3.0 134.2 197 3018 02 45 36 02 49 00 J1639+8631 20 03 02 46.6 356.0 3.5 124.8 -8 3018 No stop 02 50 30 =1654+866 20 04 32 46.6 355.9 3.5 124.4 82 3030 02 49 01 02 50 30 PSJ1721+8842 20 04 32 45.4 358.7 3.0 133.8 -8 3030 No stop 02 53 55 --- 20 07 58 45.4 358.6 3.1 133.0 197 3056 02 50 31 02 54 40 J1639+8631 20 08 43 46.5 355.9 3.6 123.3 37 3056 02 54 40 02 56 05 =1654+866 20 10 08 46.5 355.9 3.6 122.9 85 3067 02 54 41 02 56 05 PSJ1721+8842 20 10 08 45.4 358.6 3.1 132.4 -8 3067 No stop 02 59 30 --- 20 13 33 45.4 358.6 3.2 131.5 197 3094 02 56 06 02 59 30 J1639+8631 20 13 33 46.5 355.8 3.7 122.1 -8 3094 No stop 03 01 00 =1654+866 20 15 04 46.4 355.8 3.7 121.7 82 3105 02 59 31 03 01 00 PSJ1721+8842 20 15 04 45.4 358.6 3.2 131.2 -8 3105 No stop 03 04 25 --- 20 18 29 45.4 358.6 3.2 130.3 197 3132 03 01 01 03 05 10 J1639+8631 20 19 14 46.4 355.8 3.8 120.6 37 3132 03 05 10 03 06 35 =1654+866 20 20 40 46.4 355.7 3.8 120.2 85 3143 03 05 11 Schedule for MEDICINA (Code Mc ) 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 20 20 40 45.4 358.6 3.3 129.7 -8 3143 No stop 03 10 00 --- 20 24 05 45.4 358.6 3.3 128.9 197 3169 03 06 36 03 10 00 J1639+8631 20 24 05 46.3 355.7 3.8 119.3 -8 3169 No stop 03 11 30 =1654+866 20 25 35 46.3 355.7 3.9 119.0 82 3181 03 10 01 03 11 30 PSJ1721+8842 20 25 35 45.4 358.6 3.4 128.5 -8 3181 No stop 03 14 55 --- 20 29 01 45.3 358.5 3.4 127.6 197 3207 03 11 31 03 15 40 J1639+8631 20 29 46 46.2 355.6 3.9 117.9 37 3207 03 15 40 03 17 05 =1654+866 20 31 11 46.2 355.6 4.0 117.5 85 3218 03 15 41 03 17 05 PSJ1721+8842 20 31 11 45.3 358.5 3.5 127.1 -8 3218 No stop 03 20 30 --- 20 34 37 45.3 358.5 3.5 126.2 197 3244 03 17 06 03 20 30 J1639+8631 20 34 37 46.2 355.6 4.0 116.6 -8 3244 No stop 03 22 00 =1654+866 20 36 07 46.2 355.6 4.0 116.2 82 3256 03 20 31 03 22 00 PSJ1721+8842 20 36 07 45.3 358.5 3.5 125.8 -8 3256 No stop 03 25 25 --- 20 39 33 45.3 358.5 3.6 125.0 197 3282 03 22 01 03 26 10 J1639+8631 20 40 18 46.1 355.5 4.1 115.2 37 3282 03 26 10 03 27 35 =1654+866 20 41 43 46.1 355.5 4.1 114.8 85 3293 03 26 11 03 27 35 PSJ1721+8842 20 41 43 45.3 358.5 3.6 124.4 -8 3293 No stop 03 31 00 --- 20 45 09 45.3 358.5 3.7 123.5 197 3320 03 27 36 03 31 00 J1639+8631 20 45 09 46.0 355.5 4.2 113.9 -8 3320 No stop 03 32 30 =1654+866 20 46 39 46.0 355.5 4.2 113.6 82 3331 03 31 01 03 32 30 PSJ1721+8842 20 46 39 45.3 358.5 3.7 123.2 -8 3331 No stop 03 35 55 --- 20 50 04 45.2 358.4 3.8 122.3 197 3358 03 32 31 03 36 40 J1639+8631 20 50 50 46.0 355.4 4.3 112.5 37 3358 03 36 40 03 38 05 =1654+866 20 52 15 45.9 355.4 4.3 112.1 85 3369 03 36 41 03 38 05 PSJ1721+8842 20 52 15 45.2 358.4 3.8 121.7 -8 3369 No stop 03 41 30 --- 20 55 40 45.2 358.4 3.9 120.9 197 3395 03 38 06 03 41 30 J1639+8631 20 55 40 45.9 355.4 4.4 111.2 -8 3395 No stop 03 43 00 =1654+866 20 57 11 45.9 355.4 4.4 110.9 82 3407 03 41 31 03 43 00 PSJ1721+8842 20 57 11 45.2 358.4 3.9 120.5 -8 3407 No stop 03 46 25 --- 21 00 36 45.2 358.4 3.9 119.6 197 3433 03 43 01 Schedule for MEDICINA (Code Mc ) 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 21 01 21 45.8 355.4 4.5 109.8 37 3433 03 47 10 03 48 35 =1654+866 21 02 47 45.8 355.4 4.5 109.4 85 3444 03 47 11 03 48 35 PSJ1721+8842 21 02 47 45.2 358.4 4.0 119.1 -8 3444 No stop 03 52 00 --- 21 06 12 45.2 358.4 4.0 118.2 197 3470 03 48 36 03 52 00 J1639+8631 21 06 12 45.7 355.3 4.5 108.6 -8 3470 No stop 03 53 30 =1654+866 21 07 42 45.7 355.3 4.6 108.2 82 3482 03 52 01 03 53 30 PSJ1721+8842 21 07 42 45.1 358.4 4.1 117.8 -8 3482 No stop 03 56 55 --- 21 11 08 45.1 358.4 4.1 117.0 197 3508 03 53 31 03 57 40 J1639+8631 21 11 53 45.7 355.3 4.6 107.1 37 3508 03 57 40 03 59 05 =1654+866 21 13 18 45.6 355.3 4.7 106.8 85 3519 03 57 41 03 59 05 PSJ1721+8842 21 13 18 45.1 358.3 4.2 116.4 -8 3519 No stop 04 02 30 --- 21 16 44 45.1 358.3 4.2 115.6 197 3546 03 59 06 04 02 30 J1639+8631 21 16 44 45.6 355.3 4.7 105.9 -8 3546 No stop 04 04 00 =1654+866 21 18 14 45.6 355.3 4.7 105.5 82 3557 04 02 31 04 04 00 PSJ1721+8842 21 18 14 45.1 358.3 4.2 115.2 -8 3557 No stop 04 07 25 --- 21 21 40 45.1 358.3 4.3 114.3 197 3584 04 04 01 04 08 10 J1639+8631 21 22 25 45.5 355.2 4.8 104.4 37 3584 04 08 10 04 09 35 =1654+866 21 23 50 45.5 355.2 4.8 104.1 85 3595 04 08 11 04 09 35 PSJ1721+8842 21 23 50 45.1 358.3 4.3 113.8 -8 3595 No stop 04 13 00 --- 21 27 16 45.0 358.3 4.4 112.9 197 3621 04 09 36 04 13 00 J1639+8631 21 27 16 45.4 355.2 4.9 103.2 -8 3621 No stop 04 14 30 =1654+866 21 28 46 45.4 355.2 4.9 102.8 82 3633 04 13 01 04 14 30 PSJ1721+8842 21 28 46 45.0 358.3 4.4 112.5 -8 3633 No stop 04 17 55 --- 21 32 11 45.0 358.3 4.5 111.7 197 3659 04 14 31 04 18 40 J1639+8631 21 32 56 45.3 355.2 5.0 101.8 37 3659 04 18 40 04 20 05 =1654+866 21 34 22 45.3 355.2 5.0 101.4 85 3670 04 18 41 04 20 05 PSJ1721+8842 21 34 22 45.0 358.3 4.5 111.1 -8 3670 No stop 04 23 30 --- 21 37 47 45.0 358.3 4.6 110.2 197 3696 04 20 06 04 23 30 J1639+8631 21 37 47 45.3 355.2 5.1 100.6 -8 3696 No stop 04 25 00 =1654+866 21 39 17 45.2 355.2 5.1 100.2 82 3708 04 23 31 Schedule for MEDICINA (Code Mc ) 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 21 39 17 45.0 358.3 4.6 109.9 -8 3708 No stop 04 28 25 --- 21 42 43 45.0 358.2 4.7 109.0 197 3734 04 25 01 04 29 10 J1639+8631 21 43 28 45.2 355.1 5.2 99.1 37 3734 04 29 10 04 30 35 =1654+866 21 44 53 45.2 355.1 5.2 98.8 85 3745 04 29 11 04 30 35 PSJ1721+8842 21 44 53 45.0 358.2 4.7 108.5 -8 3745 No stop 04 34 00 --- 21 48 19 44.9 358.2 4.7 107.6 197 3772 04 30 36 04 34 00 J1639+8631 21 48 19 45.1 355.1 5.2 97.9 -8 3772 No stop 04 35 30 =1654+866 21 49 49 45.1 355.1 5.3 97.5 82 3783 04 34 01 04 35 30 PSJ1721+8842 21 49 49 44.9 358.2 4.8 107.2 -8 3783 No stop 04 38 55 --- 21 53 15 44.9 358.2 4.8 106.4 197 3810 04 35 31 04 39 40 J1639+8631 21 54 00 45.0 355.1 5.3 96.5 37 3810 04 39 40 04 41 05 =1654+866 21 55 25 45.0 355.1 5.4 96.1 85 3821 04 39 41 04 41 05 PSJ1721+8842 21 55 25 44.9 358.2 4.9 105.8 -8 3821 No stop 04 44 30 --- 21 58 51 44.9 358.2 4.9 104.9 197 3847 04 41 06 04 44 30 J1639+8631 21 58 51 44.9 355.1 5.4 95.3 -8 3847 No stop 04 46 00 =1654+866 22 00 21 44.9 355.1 5.4 94.9 82 3859 04 44 31 04 46 00 PSJ1721+8842 22 00 21 44.9 358.2 4.9 104.6 -8 3859 No stop 04 49 25 --- 22 03 47 44.8 358.2 5.0 103.7 197 3885 04 46 01 04 50 10 J1639+8631 22 04 32 44.9 355.1 5.5 93.8 37 3885 04 50 10 04 51 35 =1654+866 22 05 57 44.8 355.1 5.5 93.5 85 3896 04 50 11 04 51 35 PSJ1721+8842 22 05 57 44.8 358.2 5.0 103.2 -8 3896 No stop 04 55 00 --- 22 09 22 44.8 358.2 5.1 102.3 197 3923 04 51 36 04 55 00 J1639+8631 22 09 22 44.8 355.1 5.6 92.6 -8 3923 No stop 04 56 30 =1654+866 22 10 53 44.8 355.1 5.6 92.2 82 3934 04 55 01 04 56 30 PSJ1721+8842 22 10 53 44.8 358.2 5.1 101.9 -8 3934 No stop 04 59 55 --- 22 14 18 44.8 358.2 5.2 101.1 197 3961 04 56 31 05 00 40 J1639+8631 22 15 03 44.7 355.1 5.7 91.2 37 3961 05 00 40 05 02 05 =1654+866 22 16 29 44.7 355.1 5.7 90.8 85 3972 05 00 41 05 02 05 PSJ1721+8842 22 16 29 44.8 358.2 5.2 100.5 -8 3972 No stop 05 05 30 --- 22 19 54 44.8 358.2 5.3 99.7 197 3998 05 02 06 Schedule for MEDICINA (Code Mc ) 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 22 19 54 44.6 355.1 5.8 90.0 -8 3998 No stop 05 07 00 =1654+866 22 21 24 44.6 355.1 5.8 89.6 82 4010 05 05 31 05 07 00 PSJ1721+8842 22 21 24 44.7 358.2 5.3 99.3 -8 4010 No stop 05 10 25 --- 22 24 50 44.7 358.2 5.4 98.4 197 4036 05 07 01 05 11 10 J1639+8631 22 25 35 44.5 355.1 5.9 88.6 37 4036 05 11 10 05 12 35 =1654+866 22 27 00 44.5 355.1 5.9 88.2 85 4047 05 11 11 05 12 35 PSJ1721+8842 22 27 00 44.7 358.2 5.4 97.9 -8 4047 No stop 05 16 00 --- 22 30 26 44.7 358.2 5.4 97.0 197 4073 05 12 36 05 16 00 J1639+8631 22 30 26 44.5 355.1 5.9 87.4 -8 4073 No stop 05 17 30 =1654+866 22 31 56 44.4 355.1 6.0 87.0 82 4085 05 16 01 05 17 30 PSJ1721+8842 22 31 56 44.7 358.2 5.5 96.6 -8 4085 No stop 05 20 55 --- 22 35 22 44.7 358.2 5.5 95.8 197 4111 05 17 31 05 21 40 J1639+8631 22 36 07 44.4 355.1 6.0 86.0 37 4111 05 21 40 05 23 05 =1654+866 22 37 32 44.4 355.1 6.1 85.6 85 4122 05 21 41 05 23 05 PSJ1721+8842 22 37 32 44.7 358.2 5.6 95.2 -8 4122 No stop 05 26 30 --- 22 40 58 44.6 358.2 5.6 94.4 197 4149 05 23 06 05 26 30 J1639+8631 22 40 58 44.3 355.1 6.1 84.7 -8 4149 No stop 05 28 00 =1654+866 22 42 28 44.3 355.1 6.1 84.4 82 4160 05 26 31 05 28 00 PSJ1721+8842 22 42 28 44.6 358.2 5.6 94.0 -8 4160 No stop 05 31 25 --- 22 45 53 44.6 358.2 5.7 93.1 197 4187 05 28 01 05 32 10 J1639+8631 22 46 39 44.2 355.1 6.2 83.3 37 4187 05 32 10 05 33 35 =1654+866 22 48 04 44.2 355.1 6.2 83.0 85 4198 05 32 11 05 33 35 PSJ1721+8842 22 48 04 44.6 358.2 5.7 92.6 -8 4198 No stop 05 37 00 --- 22 51 29 44.6 358.1 5.8 91.7 197 4224 05 33 36 05 37 00 J1639+8631 22 51 29 44.1 355.1 6.3 82.1 -8 4224 No stop 05 38 30 =1654+866 22 53 00 44.1 355.1 6.3 81.8 82 4236 05 37 01 05 43 30 3C84 22 58 00 43.2 429.3 -4.4 -63.1 198 4236 05 43 30 05 48 30 --- 23 03 01 44.0 429.9 -4.3 -63.5 300 4274 05 43 31 05 53 30 J1639+8631 23 08 02 43.9 355.2 6.6 78.1 197 4274 05 53 30 05 58 30 =1654+866 23 13 03 43.8 355.2 6.7 76.8 300 4313 05 53 31 Schedule for MEDICINA (Code Mc ) 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 23 13 03 44.5 358.2 6.2 86.4 -8 4313 No stop 06 01 55 --- 23 16 28 44.4 358.2 6.2 85.5 197 4339 05 58 31 06 02 40 J1639+8631 23 17 14 43.8 355.2 6.7 75.8 37 4339 06 02 40 06 04 05 =1654+866 23 18 39 43.7 355.2 6.7 75.4 85 4350 06 02 41 06 04 05 PSJ1721+8842 23 18 39 44.4 358.2 6.2 85.0 -8 4350 No stop 06 07 30 --- 23 22 04 44.4 358.2 6.3 84.1 197 4377 06 04 06 06 07 30 J1639+8631 23 22 04 43.7 355.3 6.8 74.6 -8 4377 No stop 06 09 00 =1654+866 23 23 35 43.7 355.3 6.8 74.2 82 4388 06 07 31 06 09 00 PSJ1721+8842 23 23 35 44.4 358.2 6.3 83.7 -8 4388 No stop 06 12 25 --- 23 27 00 44.4 358.2 6.4 82.9 197 4415 06 09 01 06 13 10 J1639+8631 23 27 45 43.6 355.3 6.9 73.2 37 4415 06 13 10 06 14 35 =1654+866 23 29 10 43.6 355.3 6.9 72.9 85 4426 06 13 11 06 14 35 PSJ1721+8842 23 29 10 44.4 358.2 6.4 82.3 -8 4426 No stop 06 18 00 --- 23 32 36 44.3 358.2 6.5 81.5 197 4452 06 14 36 06 18 00 J1639+8631 23 32 36 43.5 355.3 7.0 72.0 -8 4452 No stop 06 19 30 =1654+866 23 34 06 43.5 355.3 7.0 71.6 82 4464 06 18 01 06 19 30 PSJ1721+8842 23 34 06 44.3 358.2 6.5 81.1 -8 4464 No stop 06 22 55 --- 23 37 32 44.3 358.2 6.6 80.3 197 4490 06 19 31 06 23 40 J1639+8631 23 38 17 43.4 355.4 7.1 70.6 37 4490 06 23 40 06 25 05 =1654+866 23 39 42 43.4 355.4 7.1 70.3 85 4501 06 23 41 06 25 05 PSJ1721+8842 23 39 42 44.3 358.2 6.6 79.7 -8 4501 No stop 06 28 30 --- 23 43 08 44.3 358.2 6.7 78.9 197 4527 06 25 06 06 28 30 J1639+8631 23 43 08 43.4 355.4 7.2 69.4 -8 4527 No stop 06 30 00 =1654+866 23 44 38 43.4 355.4 7.2 69.1 82 4539 06 28 31 06 30 00 PSJ1721+8842 23 44 38 44.3 358.2 6.7 78.5 -8 4539 No stop 06 33 25 --- 23 48 04 44.3 358.2 6.7 77.6 197 4565 06 30 01 06 34 10 J1639+8631 23 48 49 43.3 355.4 7.3 68.0 37 4565 06 34 10 06 35 35 =1654+866 23 50 14 43.3 355.4 7.3 67.7 85 4576 06 34 11 06 35 35 PSJ1721+8842 23 50 14 44.2 358.2 6.8 77.1 -8 4576 No stop 06 39 00 --- 23 53 40 44.2 358.2 6.8 76.2 197 4603 06 35 36 Schedule for MEDICINA (Code Mc ) 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 23 53 40 43.2 355.5 7.3 66.9 -8 4603 No stop 06 40 30 =1654+866 23 55 10 43.2 355.5 7.4 66.5 82 4614 06 39 01 06 40 30 PSJ1721+8842 23 55 10 44.2 358.2 6.9 75.9 -8 4614 No stop 06 43 55 --- 23 58 35 44.2 358.2 6.9 75.0 197 4641 06 40 31 06 44 40 J1639+8631 23 59 20 43.1 355.5 7.4 65.5 37 4641 06 44 40 06 46 05 =1654+866 00 00 46 43.1 355.5 7.5 65.1 85 4652 06 44 41 06 46 05 PSJ1721+8842 00 00 46 44.2 358.2 7.0 74.5 -7 4652 No stop 06 49 30 --- 00 04 11 44.2 358.2 7.0 73.6 198 4678 06 46 06 06 49 30 J1639+8631 00 04 11 43.1 355.6 7.5 64.3 -7 4678 No stop 06 51 00 =1654+866 00 05 41 43.1 355.6 7.5 63.9 83 4690 06 49 31 06 51 00 PSJ1721+8842 00 05 41 44.2 358.2 7.0 73.3 -7 4690 No stop 06 54 25 --- 00 09 07 44.1 358.2 7.1 72.4 198 4716 06 51 01 06 55 10 J1639+8631 00 09 52 43.0 355.6 7.6 62.9 38 4716 06 55 10 06 56 35 =1654+866 00 11 17 43.0 355.6 7.6 62.6 85 4727 06 55 11 06 56 35 PSJ1721+8842 00 11 17 44.1 358.2 7.1 71.9 -7 4727 No stop 07 00 00 --- 00 14 43 44.1 358.2 7.2 71.0 198 4753 06 56 36 07 00 00 J1639+8631 00 14 43 42.9 355.7 7.7 61.7 -7 4753 No stop 07 01 30 =1654+866 00 16 13 42.9 355.7 7.7 61.4 83 4765 07 00 01 07 01 30 PSJ1721+8842 00 16 13 44.1 358.3 7.2 70.6 -7 4765 No stop 07 04 55 --- 00 19 39 44.1 358.3 7.3 69.8 198 4791 07 01 31 07 05 40 J1639+8631 00 20 24 42.9 355.7 7.8 60.4 38 4791 07 05 40 07 07 05 =1654+866 00 21 49 42.8 355.7 7.8 60.0 85 4802 07 05 41 07 07 05 PSJ1721+8842 00 21 49 44.1 358.3 7.3 69.3 -7 4802 No stop 07 10 30 --- 00 25 15 44.0 358.3 7.4 68.4 198 4829 07 07 06 07 10 30 J1639+8631 00 25 15 42.8 355.8 7.9 59.2 -7 4829 No stop 07 12 00 =1654+866 00 26 45 42.8 355.8 7.9 58.8 83 4840 07 10 31 07 12 00 PSJ1721+8842 00 26 45 44.0 358.3 7.4 68.0 -7 4840 No stop 07 15 25 --- 00 30 10 44.0 358.3 7.4 67.2 198 4867 07 12 01 07 16 10 J1639+8631 00 30 56 42.7 355.8 8.0 57.8 38 4867 07 16 10 07 17 35 =1654+866 00 32 21 42.7 355.8 8.0 57.5 85 4878 07 16 11 Schedule for MEDICINA (Code Mc ) 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 00 32 21 44.0 358.3 7.5 66.6 -7 4878 No stop 07 21 00 --- 00 35 46 44.0 358.3 7.5 65.8 198 4904 07 17 36 07 21 00 J1639+8631 00 35 46 42.7 355.9 8.0 56.6 -7 4904 No stop 07 22 30 =1654+866 00 37 17 42.6 355.9 8.1 56.3 83 4916 07 21 01 07 22 30 PSJ1721+8842 00 37 17 44.0 358.3 7.6 65.4 -7 4916 No stop 07 25 55 --- 00 40 42 44.0 358.3 7.6 64.6 198 4942 07 22 31 07 26 40 J1639+8631 00 41 27 42.6 356.0 8.1 55.3 38 4942 07 26 40 07 28 05 =1654+866 00 42 53 42.6 356.0 8.2 54.9 85 4953 07 26 41 07 28 05 PSJ1721+8842 00 42 53 44.0 358.3 7.7 64.0 -7 4953 No stop 07 30 30 --- 00 45 18 43.9 358.3 7.7 63.4 138 4972 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: 8 Station: MEDICINA Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 1295.00 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 4 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= 331.49 331.49 331.49 331.49 395.49 395.49 395.49 395.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 4 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 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