COVER INFORMATION Station: ZELENCHK (Code Zc ) 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 ZELENCHK (Code Zc ) Page 2 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 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: 366.49 366.49 366.49 366.49 430.49 430.49 430.49 430.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 19 30 00 J1639+8631 14 42 30 46.9 362.4 -1.9 -150.5 0 0 19 30 00 19 31 30 =1654+866 14 44 00 46.9 362.4 -1.8 -150.9 90 12 19 30 01 19 31 30 PSJ1721+8842 14 44 00 44.9 361.1 -2.3 -144.3 -18 12 No stop 19 34 55 --- 14 47 26 44.9 361.0 -2.3 -145.2 187 38 19 31 31 19 35 40 J1639+8631 14 48 11 46.9 362.3 -1.8 -152.0 27 38 19 35 40 19 37 05 =1654+866 14 49 36 46.9 362.3 -1.7 -152.4 85 49 19 35 41 19 37 05 PSJ1721+8842 14 49 36 44.9 361.0 -2.2 -145.8 -18 49 No stop 19 40 30 --- 14 53 02 44.9 361.0 -2.2 -146.6 187 75 19 37 06 19 40 30 J1639+8631 14 53 02 46.9 362.2 -1.7 -153.3 -18 75 No stop 19 42 00 =1654+866 14 54 32 47.0 362.2 -1.7 -153.7 72 87 19 40 31 19 42 00 PSJ1721+8842 14 54 32 44.9 361.0 -2.2 -147.0 -18 87 No stop 19 45 25 --- 14 57 58 44.9 361.0 -2.1 -147.9 187 113 19 42 01 19 46 10 J1639+8631 14 58 43 47.0 362.1 -1.6 -154.8 27 113 19 46 10 19 47 35 =1654+866 15 00 08 47.0 362.0 -1.6 -155.2 85 124 19 46 11 19 47 35 PSJ1721+8842 15 00 08 44.9 361.0 -2.1 -148.4 -18 124 No stop 19 51 00 --- 15 03 33 44.9 360.9 -2.0 -149.3 187 150 19 47 36 19 51 00 J1639+8631 15 03 33 47.0 362.0 -1.5 -156.1 -18 150 No stop 19 52 30 =1654+866 15 05 04 47.0 361.9 -1.5 -156.5 72 162 19 51 01 19 52 30 PSJ1721+8842 15 05 04 44.9 360.9 -2.0 -149.7 -18 162 No stop 19 55 55 --- 15 08 29 44.9 360.9 -1.9 -150.6 187 188 19 52 31 19 56 40 J1639+8631 15 09 14 47.0 361.9 -1.4 -157.6 27 188 19 56 40 19 58 05 =1654+866 15 10 40 47.1 361.8 -1.4 -157.9 85 199 19 56 41 19 58 05 PSJ1721+8842 15 10 40 44.9 360.9 -1.9 -151.1 -18 199 No stop 20 01 30 --- 15 14 05 45.0 360.9 -1.8 -152.0 187 225 19 58 06 20 01 30 J1639+8631 15 14 05 47.1 361.8 -1.3 -158.8 -18 225 No stop 20 03 00 =1654+866 15 15 35 47.1 361.7 -1.3 -159.2 72 237 20 01 31 20 03 00 PSJ1721+8842 15 15 35 45.0 360.8 -1.8 -152.4 -18 237 No stop 20 06 25 --- 15 19 01 45.0 360.8 -1.7 -153.3 187 263 20 03 01 Schedule for ZELENCHK (Code Zc ) Page 3 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 28 May 2021 Day 148 --- 20 07 10 J1639+8631 15 19 46 47.1 361.6 -1.2 -160.4 27 263 20 07 10 20 08 35 =1654+866 15 21 11 47.1 361.6 -1.2 -160.7 85 274 20 07 11 20 08 35 PSJ1721+8842 15 21 11 45.0 360.8 -1.7 -153.8 -18 274 No stop 20 12 00 --- 15 24 37 45.0 360.8 -1.7 -154.7 187 300 20 08 36 20 12 00 J1639+8631 15 24 37 47.1 361.5 -1.2 -161.6 -18 300 No stop 20 13 30 =1654+866 15 26 07 47.1 361.5 -1.1 -162.0 72 312 20 12 01 20 13 30 PSJ1721+8842 15 26 07 45.0 360.8 -1.6 -155.1 -18 312 No stop 20 16 55 --- 15 29 33 45.0 360.7 -1.6 -155.9 187 338 20 13 31 20 17 40 J1639+8631 15 30 18 47.2 361.4 -1.1 -163.1 27 338 20 17 40 20 19 05 =1654+866 15 31 43 47.2 361.4 -1.0 -163.5 85 349 20 17 41 20 19 05 PSJ1721+8842 15 31 43 45.0 360.7 -1.5 -156.5 -18 349 No stop 20 22 30 --- 15 35 09 45.0 360.7 -1.5 -157.4 187 375 20 19 06 20 22 30 J1639+8631 15 35 09 47.2 361.3 -1.0 -164.4 -18 375 No stop 20 24 00 =1654+866 15 36 39 47.2 361.3 -1.0 -164.8 72 387 20 22 31 20 24 00 PSJ1721+8842 15 36 39 45.0 360.7 -1.5 -157.8 -18 387 No stop 20 27 25 --- 15 40 04 45.0 360.7 -1.4 -158.6 187 413 20 24 01 20 28 10 J1639+8631 15 40 50 47.2 361.2 -0.9 -165.9 27 413 20 28 10 20 29 35 =1654+866 15 42 15 47.2 361.1 -0.9 -166.3 85 424 20 28 11 20 29 35 PSJ1721+8842 15 42 15 45.0 360.6 -1.4 -159.2 -18 424 No stop 20 33 00 --- 15 45 40 45.0 360.6 -1.3 -160.1 187 450 20 29 36 20 33 00 J1639+8631 15 45 40 47.2 361.1 -0.8 -167.2 -18 450 No stop 20 34 30 =1654+866 15 47 11 47.2 361.0 -0.8 -167.6 72 462 20 33 01 20 34 30 PSJ1721+8842 15 47 11 45.0 360.6 -1.3 -160.5 -18 462 No stop 20 37 55 --- 15 50 36 45.0 360.6 -1.2 -161.3 187 488 20 34 31 20 38 40 J1639+8631 15 51 21 47.2 360.9 -0.7 -168.7 27 488 20 38 40 20 40 05 =1654+866 15 52 46 47.2 360.9 -0.7 -169.1 85 499 20 38 41 20 40 05 PSJ1721+8842 15 52 46 45.0 360.6 -1.2 -161.9 -18 499 No stop 20 43 30 --- 15 56 12 45.0 360.5 -1.1 -162.8 187 525 20 40 06 20 43 30 J1639+8631 15 56 12 47.2 360.8 -0.6 -170.0 -18 525 No stop 20 45 00 =1654+866 15 57 42 47.3 360.8 -0.6 -170.4 72 537 20 43 31 Schedule for ZELENCHK (Code Zc ) Page 4 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 28 May 2021 Day 148 --- 20 45 00 PSJ1721+8842 15 57 42 45.1 360.5 -1.1 -163.1 -18 537 No stop 20 48 25 --- 16 01 08 45.1 360.5 -1.0 -164.0 187 563 20 45 01 20 49 10 J1639+8631 16 01 53 47.3 360.7 -0.5 -171.5 27 563 20 49 10 20 50 35 =1654+866 16 03 18 47.3 360.7 -0.5 -171.9 85 574 20 49 11 20 50 35 PSJ1721+8842 16 03 18 45.1 360.5 -1.0 -164.6 -18 574 No stop 20 54 00 --- 16 06 44 45.1 360.5 -0.9 -165.4 187 600 20 50 36 20 54 00 J1639+8631 16 06 44 47.3 360.6 -0.4 -172.8 -18 600 No stop 20 55 30 =1654+866 16 08 14 47.3 360.6 -0.4 -173.2 72 612 20 54 01 21 10 30 J1639+8631 16 23 16 47.3 360.2 -0.2 -177.2 895 612 21 10 30 21 15 30 =1654+866 16 28 17 47.3 360.1 -0.1 -178.6 300 650 21 10 31 21 15 30 PSJ1721+8842 16 28 17 45.1 360.3 -0.6 -171.0 -18 650 No stop 21 18 55 --- 16 31 43 45.1 360.3 -0.5 -171.8 187 676 21 15 31 21 19 40 J1639+8631 16 32 28 47.3 360.0 -0.0 -179.7 27 676 21 19 40 21 21 05 =1654+866 16 33 53 47.3 360.0 0.0 179.9 85 687 21 19 41 21 21 05 PSJ1721+8842 16 33 53 45.1 360.2 -0.5 -172.4 -18 687 No stop 21 24 30 --- 16 37 19 45.1 360.2 -0.4 -173.3 187 713 21 21 06 21 24 30 J1639+8631 16 37 19 47.3 359.9 0.1 179.0 -18 713 No stop 21 26 00 =1654+866 16 38 49 47.3 359.9 0.1 178.6 72 725 21 24 31 21 26 00 PSJ1721+8842 16 38 49 45.1 360.2 -0.4 -173.6 -18 725 No stop 21 29 25 --- 16 42 15 45.1 360.2 -0.4 -174.5 187 751 21 26 01 21 30 10 J1639+8631 16 43 00 47.3 359.8 0.2 177.5 27 751 21 30 10 21 31 35 =1654+866 16 44 25 47.3 359.8 0.2 177.1 85 762 21 30 11 21 31 35 PSJ1721+8842 16 44 25 45.1 360.2 -0.3 -175.1 -18 762 No stop 21 35 00 --- 16 47 51 45.1 360.1 -0.3 -176.0 187 788 21 31 36 21 35 00 J1639+8631 16 47 51 47.3 359.7 0.2 176.2 -18 788 No stop 21 36 30 =1654+866 16 49 21 47.3 359.6 0.3 175.8 72 800 21 35 01 21 36 30 PSJ1721+8842 16 49 21 45.1 360.1 -0.2 -176.3 -18 800 No stop 21 39 55 --- 16 52 46 45.1 360.1 -0.2 -177.2 187 826 21 36 31 21 40 40 J1639+8631 16 53 31 47.3 359.6 0.3 174.7 27 826 21 40 40 21 42 05 =1654+866 16 54 57 47.3 359.5 0.4 174.3 85 837 21 40 41 Schedule for ZELENCHK (Code Zc ) Page 5 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 28 May 2021 Day 148 --- 21 42 05 PSJ1721+8842 16 54 57 45.1 360.1 -0.1 -177.8 -18 837 No stop 21 45 30 --- 16 58 22 45.1 360.0 -0.1 -178.6 187 863 21 42 06 21 45 30 J1639+8631 16 58 22 47.3 359.4 0.4 173.4 -18 863 No stop 21 47 00 =1654+866 16 59 52 47.3 359.4 0.4 173.0 72 875 21 45 31 21 47 00 PSJ1721+8842 16 59 52 45.1 360.0 -0.1 -179.0 -18 875 No stop 21 50 25 --- 17 03 18 45.1 360.0 -0.0 -179.9 187 901 21 47 01 21 51 10 J1639+8631 17 04 03 47.3 359.3 0.5 171.9 27 901 21 51 10 21 52 35 =1654+866 17 05 28 47.3 359.3 0.5 171.5 85 912 21 51 11 21 52 35 PSJ1721+8842 17 05 28 45.1 360.0 0.0 179.5 -18 912 No stop 21 56 00 --- 17 08 54 45.1 360.0 0.1 178.7 187 938 21 52 36 21 56 00 J1639+8631 17 08 54 47.3 359.2 0.6 170.6 -18 938 No stop 21 57 30 =1654+866 17 10 24 47.3 359.2 0.6 170.2 72 950 21 56 01 21 57 30 PSJ1721+8842 17 10 24 45.1 359.9 0.1 178.3 -18 950 No stop 22 00 55 --- 17 13 50 45.1 359.9 0.2 177.4 187 976 21 57 31 22 01 40 J1639+8631 17 14 35 47.2 359.1 0.7 169.1 27 976 22 01 40 22 03 05 =1654+866 17 16 00 47.2 359.1 0.7 168.7 85 987 22 01 41 22 03 05 PSJ1721+8842 17 16 00 45.1 359.9 0.2 176.8 -18 987 No stop 22 06 30 --- 17 19 26 45.1 359.9 0.3 176.0 187 1013 22 03 06 22 06 30 J1639+8631 17 19 26 47.2 359.0 0.8 167.8 -18 1013 No stop 22 08 00 =1654+866 17 20 56 47.2 358.9 0.8 167.4 72 1025 22 06 31 22 08 00 PSJ1721+8842 17 20 56 45.1 359.9 0.3 175.6 -18 1025 No stop 22 11 25 --- 17 24 21 45.1 359.8 0.3 174.7 187 1051 22 08 01 22 12 10 J1639+8631 17 25 07 47.2 358.9 0.9 166.3 27 1051 22 12 10 22 13 35 =1654+866 17 26 32 47.2 358.8 0.9 165.9 85 1062 22 12 11 22 13 35 PSJ1721+8842 17 26 32 45.1 359.8 0.4 174.2 -18 1062 No stop 22 17 00 --- 17 29 57 45.1 359.8 0.4 173.3 187 1088 22 13 36 22 17 00 J1639+8631 17 29 57 47.2 358.7 0.9 165.0 -18 1088 No stop 22 18 30 =1654+866 17 31 28 47.2 358.7 1.0 164.6 72 1100 22 17 01 22 18 30 PSJ1721+8842 17 31 28 45.1 359.8 0.5 172.9 -18 1100 No stop 22 21 55 --- 17 34 53 45.1 359.7 0.5 172.0 187 1126 22 18 31 Schedule for ZELENCHK (Code Zc ) Page 6 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 28 May 2021 Day 148 --- 22 22 40 J1639+8631 17 35 38 47.2 358.6 1.0 163.5 27 1126 22 22 40 22 24 05 =1654+866 17 37 04 47.2 358.6 1.1 163.2 85 1137 22 22 41 22 24 05 PSJ1721+8842 17 37 04 45.1 359.7 0.6 171.5 -18 1137 No stop 22 27 30 --- 17 40 29 45.1 359.7 0.6 170.6 187 1163 22 24 06 22 27 30 J1639+8631 17 40 29 47.1 358.5 1.1 162.2 -18 1163 No stop 22 29 00 =1654+866 17 41 59 47.1 358.5 1.1 161.8 72 1175 22 27 31 22 29 00 PSJ1721+8842 17 41 59 45.1 359.7 0.6 170.2 -18 1175 No stop 22 32 25 --- 17 45 25 45.1 359.7 0.7 169.3 187 1201 22 29 01 22 33 10 J1639+8631 17 46 10 47.1 358.4 1.2 160.7 27 1201 22 33 10 22 34 35 =1654+866 17 47 35 47.1 358.4 1.2 160.4 85 1212 22 33 11 22 34 35 PSJ1721+8842 17 47 35 45.1 359.6 0.7 168.8 -18 1212 No stop 22 38 00 --- 17 51 01 45.1 359.6 0.8 167.9 187 1238 22 34 36 22 38 00 J1639+8631 17 51 01 47.1 358.3 1.3 159.5 -18 1238 No stop 22 39 30 =1654+866 17 52 31 47.1 358.3 1.3 159.1 72 1250 22 38 01 22 39 30 PSJ1721+8842 17 52 31 45.1 359.6 0.8 167.5 -18 1250 No stop 22 42 55 --- 17 55 57 45.1 359.6 0.9 166.6 187 1276 22 39 31 22 43 40 J1639+8631 17 56 42 47.1 358.2 1.4 157.9 27 1276 22 43 40 22 45 05 =1654+866 17 58 07 47.0 358.1 1.4 157.6 85 1287 22 43 41 22 45 05 PSJ1721+8842 17 58 07 45.1 359.6 0.9 166.1 -18 1287 No stop 22 48 30 --- 18 01 33 45.1 359.5 1.0 165.2 187 1313 22 45 06 22 48 30 J1639+8631 18 01 33 47.0 358.1 1.5 156.7 -18 1313 No stop 22 50 00 =1654+866 18 03 03 47.0 358.0 1.5 156.3 72 1325 22 48 31 22 50 00 PSJ1721+8842 18 03 03 45.1 359.5 1.0 164.8 -18 1325 No stop 22 53 25 --- 18 06 28 45.1 359.5 1.0 163.9 187 1351 22 50 01 22 54 10 J1639+8631 18 07 14 47.0 358.0 1.6 155.2 28 1351 22 54 10 22 55 35 =1654+866 18 08 39 47.0 357.9 1.6 154.8 85 1362 22 54 11 22 55 35 PSJ1721+8842 18 08 39 45.1 359.5 1.1 163.4 -17 1362 No stop 22 59 00 --- 18 12 04 45.0 359.5 1.1 162.5 188 1388 22 55 36 22 59 00 J1639+8631 18 12 04 47.0 357.9 1.6 153.9 -17 1388 No stop 23 00 30 =1654+866 18 13 35 47.0 357.8 1.7 153.5 73 1400 22 59 01 Schedule for ZELENCHK (Code Zc ) Page 7 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 28 May 2021 Day 148 --- 23 00 30 PSJ1721+8842 18 13 35 45.0 359.4 1.2 162.1 -17 1400 No stop 23 03 55 --- 18 17 00 45.0 359.4 1.2 161.3 188 1426 23 00 31 23 04 40 J1639+8631 18 17 45 46.9 357.7 1.7 152.4 28 1426 23 04 40 23 06 05 =1654+866 18 19 10 46.9 357.7 1.8 152.0 85 1437 23 04 41 23 06 05 PSJ1721+8842 18 19 10 45.0 359.4 1.3 160.7 -17 1437 No stop 23 09 30 --- 18 22 36 45.0 359.4 1.3 159.8 188 1463 23 06 06 23 09 30 J1639+8631 18 22 36 46.9 357.7 1.8 151.1 -17 1463 No stop 23 11 00 =1654+866 18 24 06 46.9 357.6 1.8 150.7 73 1475 23 09 31 23 11 00 PSJ1721+8842 18 24 06 45.0 359.4 1.3 159.4 -17 1475 No stop 23 14 25 --- 18 27 32 45.0 359.3 1.4 158.6 188 1501 23 11 01 23 15 10 J1639+8631 18 28 17 46.8 357.5 1.9 149.6 28 1501 23 15 10 23 16 35 =1654+866 18 29 42 46.8 357.5 1.9 149.2 85 1512 23 15 11 23 16 35 PSJ1721+8842 18 29 42 45.0 359.3 1.4 158.0 -17 1512 No stop 23 20 00 --- 18 33 08 45.0 359.3 1.5 157.1 188 1538 23 16 36 23 20 00 J1639+8631 18 33 08 46.8 357.4 2.0 148.3 -17 1538 No stop 23 21 30 =1654+866 18 34 38 46.8 357.4 2.0 147.9 73 1550 23 20 01 23 21 30 PSJ1721+8842 18 34 38 45.0 359.3 1.5 156.8 -17 1550 No stop 23 24 55 --- 18 38 04 45.0 359.3 1.6 155.9 188 1576 23 21 31 23 25 40 J1639+8631 18 38 49 46.8 357.3 2.1 146.8 28 1576 23 25 40 23 27 05 =1654+866 18 40 14 46.7 357.3 2.1 146.5 85 1587 23 25 41 23 27 05 PSJ1721+8842 18 40 14 45.0 359.2 1.6 155.3 -17 1587 No stop 23 30 30 --- 18 43 39 45.0 359.2 1.7 154.4 188 1613 23 27 06 23 30 30 J1639+8631 18 43 39 46.7 357.2 2.2 145.6 -18 1613 No stop 23 32 00 =1654+866 18 45 10 46.7 357.2 2.2 145.2 72 1625 23 30 31 23 32 00 PSJ1721+8842 18 45 10 45.0 359.2 1.7 154.1 -18 1625 No stop 23 35 25 --- 18 48 35 45.0 359.2 1.7 153.2 187 1651 23 32 01 23 36 10 J1639+8631 18 49 20 46.7 357.1 2.3 144.1 27 1651 23 36 10 23 37 35 =1654+866 18 50 46 46.7 357.1 2.3 143.7 85 1662 23 36 11 23 37 35 PSJ1721+8842 18 50 46 45.0 359.2 1.8 152.6 -18 1662 No stop 23 41 00 --- 18 54 11 45.0 359.1 1.8 151.8 187 1688 23 37 36 Schedule for ZELENCHK (Code Zc ) Page 8 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 28 May 2021 Day 148 --- 23 41 00 J1639+8631 18 54 11 46.6 357.1 2.3 142.8 -18 1688 No stop 23 42 30 =1654+866 18 55 41 46.6 357.0 2.4 142.4 72 1700 23 41 01 23 42 30 PSJ1721+8842 18 55 41 44.9 359.1 1.9 151.4 -18 1700 No stop 23 45 55 --- 18 59 07 44.9 359.1 1.9 150.5 187 1726 23 42 31 23 46 40 J1639+8631 18 59 52 46.6 357.0 2.4 141.3 27 1726 23 46 40 23 48 05 =1654+866 19 01 17 46.6 356.9 2.5 140.9 85 1737 23 46 41 23 48 05 PSJ1721+8842 19 01 17 44.9 359.1 2.0 150.0 -18 1737 No stop 23 51 30 --- 19 04 43 44.9 359.1 2.0 149.1 187 1763 23 48 06 23 51 30 J1639+8631 19 04 43 46.5 356.9 2.5 140.0 -18 1763 No stop 23 53 00 =1654+866 19 06 13 46.5 356.9 2.5 139.6 72 1775 23 51 31 23 53 00 PSJ1721+8842 19 06 13 44.9 359.1 2.0 148.7 -18 1775 No stop 23 56 25 --- 19 09 39 44.9 359.0 2.1 147.8 187 1801 23 53 01 23 57 10 J1639+8631 19 10 24 46.5 356.8 2.6 138.5 27 1801 23 57 10 23 58 35 =1654+866 19 11 49 46.5 356.8 2.6 138.2 85 1812 23 57 11 --- Start: Fri 28 May 2021 Day 148 -- Stop: Sat 29 May 2021 Day 149 --- 23 58 35 PSJ1721+8842 19 11 49 44.9 359.0 2.1 147.3 -18 1812 No stop 00 02 00 --- 19 15 15 44.9 359.0 2.2 146.4 187 1838 23 58 36 00 02 00 J1639+8631 19 15 15 46.4 356.7 2.7 137.3 -19 1838 No stop 00 03 30 =1654+866 19 16 45 46.4 356.7 2.7 136.9 71 1850 00 02 01 00 03 30 PSJ1721+8842 19 16 45 44.9 359.0 2.2 146.0 -19 1850 No stop 00 06 55 --- 19 20 10 44.9 359.0 2.3 145.1 186 1876 00 03 31 00 07 40 J1639+8631 19 20 56 46.4 356.6 2.8 135.8 26 1876 00 07 40 00 09 05 =1654+866 19 22 21 46.3 356.6 2.8 135.4 85 1887 00 07 41 00 09 05 PSJ1721+8842 19 22 21 44.9 358.9 2.3 144.6 -19 1887 No stop 00 12 30 --- 19 25 46 44.9 358.9 2.4 143.7 186 1913 00 09 06 00 12 30 J1639+8631 19 25 46 46.3 356.5 2.9 134.5 -19 1913 No stop 00 14 00 =1654+866 19 27 17 46.3 356.5 2.9 134.1 71 1925 00 12 31 00 14 00 PSJ1721+8842 19 27 17 44.9 358.9 2.4 143.3 -19 1925 No stop 00 17 25 --- 19 30 42 44.8 358.9 2.5 142.5 186 1951 00 14 01 Schedule for ZELENCHK (Code Zc ) Page 9 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 00 18 10 J1639+8631 19 31 27 46.2 356.4 3.0 133.0 26 1951 00 18 10 00 19 35 =1654+866 19 32 53 46.2 356.4 3.0 132.7 85 1962 00 18 11 00 19 35 PSJ1721+8842 19 32 53 44.8 358.9 2.5 141.9 -19 1962 No stop 00 23 00 --- 19 36 18 44.8 358.9 2.5 141.0 186 1988 00 19 36 00 23 00 J1639+8631 19 36 18 46.2 356.4 3.0 131.8 -19 1988 No stop 00 24 30 =1654+866 19 37 48 46.2 356.4 3.1 131.4 71 2000 00 23 01 00 24 30 PSJ1721+8842 19 37 48 44.8 358.8 2.6 140.7 -19 2000 No stop 00 27 55 --- 19 41 14 44.8 358.8 2.6 139.8 186 2026 00 24 31 00 28 40 J1639+8631 19 41 59 46.1 356.3 3.1 130.3 26 2026 00 28 40 00 30 05 =1654+866 19 43 24 46.1 356.3 3.2 129.9 85 2037 00 28 41 00 30 05 PSJ1721+8842 19 43 24 44.8 358.8 2.7 139.2 -19 2037 No stop 00 33 30 --- 19 46 50 44.8 358.8 2.7 138.4 186 2063 00 30 06 00 33 30 J1639+8631 19 46 50 46.1 356.2 3.2 129.0 -19 2063 No stop 00 35 00 =1654+866 19 48 20 46.0 356.2 3.2 128.7 71 2075 00 33 31 00 35 00 PSJ1721+8842 19 48 20 44.8 358.8 2.7 138.0 -19 2075 No stop 00 38 25 --- 19 51 46 44.8 358.8 2.8 137.1 186 2101 00 35 01 00 39 10 J1639+8631 19 52 31 46.0 356.1 3.3 127.6 26 2101 00 39 10 00 40 35 =1654+866 19 53 56 46.0 356.1 3.3 127.2 85 2112 00 39 11 00 40 35 PSJ1721+8842 19 53 56 44.8 358.7 2.8 136.6 -19 2112 No stop 00 44 00 --- 19 57 22 44.7 358.7 2.9 135.7 186 2138 00 40 36 00 44 00 J1639+8631 19 57 22 45.9 356.1 3.4 126.3 -20 2138 No stop 00 45 30 =1654+866 19 58 52 45.9 356.1 3.4 125.9 70 2150 00 44 01 00 45 30 PSJ1721+8842 19 58 52 44.7 358.7 2.9 135.3 -20 2150 No stop 00 48 55 --- 20 02 17 44.7 358.7 3.0 134.4 185 2176 00 45 31 00 49 40 J1639+8631 20 03 02 45.9 356.0 3.5 124.8 25 2176 00 49 40 00 51 05 =1654+866 20 04 28 45.8 356.0 3.5 124.5 85 2187 00 49 41 00 51 05 PSJ1721+8842 20 04 28 44.7 358.7 3.0 133.9 -20 2187 No stop 00 54 30 --- 20 07 53 44.7 358.7 3.1 133.0 185 2213 00 51 06 00 54 30 J1639+8631 20 07 53 45.8 355.9 3.6 123.6 -20 2213 No stop 00 56 00 =1654+866 20 09 24 45.8 355.9 3.6 123.2 70 2225 00 54 31 Schedule for ZELENCHK (Code Zc ) Page 10 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 00 56 00 PSJ1721+8842 20 09 24 44.7 358.7 3.1 132.6 -20 2225 No stop 00 59 25 --- 20 12 49 44.7 358.6 3.2 131.8 185 2251 00 56 01 01 00 10 J1639+8631 20 13 34 45.7 355.9 3.7 122.1 25 2251 01 00 10 01 01 35 =1654+866 20 14 59 45.7 355.9 3.7 121.8 85 2262 01 00 11 01 01 35 PSJ1721+8842 20 14 59 44.7 358.6 3.2 131.2 -20 2262 No stop 01 05 00 --- 20 18 25 44.7 358.6 3.2 130.3 185 2288 01 01 36 01 05 00 J1639+8631 20 18 25 45.7 355.8 3.7 120.9 -20 2288 No stop 01 06 30 =1654+866 20 19 55 45.6 355.8 3.8 120.5 70 2300 01 05 01 01 06 30 PSJ1721+8842 20 19 55 44.6 358.6 3.3 130.0 -20 2300 No stop 01 09 55 --- 20 23 21 44.6 358.6 3.3 129.1 185 2326 01 06 31 01 10 40 J1639+8631 20 24 06 45.6 355.8 3.8 119.4 25 2326 01 10 40 01 12 05 =1654+866 20 25 31 45.6 355.7 3.9 119.1 85 2337 01 10 41 01 12 05 PSJ1721+8842 20 25 31 44.6 358.6 3.4 128.5 -20 2337 No stop 01 15 30 --- 20 28 57 44.6 358.6 3.4 127.7 185 2363 01 12 06 01 15 30 J1639+8631 20 28 57 45.5 355.7 3.9 118.2 -20 2363 No stop 01 17 00 =1654+866 20 30 27 45.5 355.7 3.9 117.8 70 2375 01 15 31 01 17 00 PSJ1721+8842 20 30 27 44.6 358.5 3.4 127.3 -20 2375 No stop 01 20 25 --- 20 33 53 44.6 358.5 3.5 126.4 185 2401 01 17 01 01 21 10 J1639+8631 20 34 38 45.5 355.7 4.0 116.7 25 2401 01 21 10 01 22 35 =1654+866 20 36 03 45.4 355.6 4.0 116.3 85 2412 01 21 11 01 22 35 PSJ1721+8842 20 36 03 44.6 358.5 3.5 125.9 -20 2412 No stop 01 26 00 --- 20 39 28 44.6 358.5 3.6 125.0 185 2438 01 22 36 01 26 00 J1639+8631 20 39 28 45.4 355.6 4.1 115.5 -20 2438 No stop 01 27 30 =1654+866 20 40 59 45.4 355.6 4.1 115.1 70 2450 01 26 01 01 32 30 3C454.3 20 46 00 51.2 485.1 -2.2 -38.0 146 2450 01 32 30 01 37 30 --- 20 51 00 52.0 486.6 -2.1 -37.1 300 2488 01 32 31 01 42 30 J1639+8631 20 56 01 45.2 355.5 4.4 111.2 144 2488 01 42 30 01 47 30 =1654+866 21 01 02 45.1 355.4 4.5 110.0 300 2527 01 42 31 01 47 30 PSJ1721+8842 21 01 02 44.4 358.4 4.0 119.5 -20 2527 No stop 01 50 55 --- 21 04 28 44.4 358.4 4.0 118.7 185 2553 01 47 31 Schedule for ZELENCHK (Code Zc ) Page 11 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 01 51 40 J1639+8631 21 05 13 45.0 355.4 4.5 108.9 25 2553 01 51 40 01 53 05 =1654+866 21 06 38 45.0 355.4 4.5 108.5 85 2564 01 51 41 01 53 05 PSJ1721+8842 21 06 38 44.4 358.4 4.0 118.1 -20 2564 No stop 01 56 30 --- 21 10 03 44.4 358.4 4.1 117.3 185 2590 01 53 06 01 56 30 J1639+8631 21 10 03 44.9 355.4 4.6 107.7 -21 2590 No stop 01 58 00 =1654+866 21 11 34 44.9 355.4 4.6 107.3 69 2602 01 56 31 01 58 00 PSJ1721+8842 21 11 34 44.4 358.4 4.1 116.9 -21 2602 No stop 02 01 25 --- 21 14 59 44.4 358.4 4.2 116.0 184 2628 01 58 01 02 02 10 J1639+8631 21 15 44 44.9 355.3 4.7 106.2 24 2628 02 02 10 02 03 35 =1654+866 21 17 10 44.8 355.3 4.7 105.9 85 2639 02 02 11 02 03 35 PSJ1721+8842 21 17 10 44.4 358.3 4.2 115.5 -21 2639 No stop 02 07 00 --- 21 20 35 44.3 358.3 4.3 114.6 184 2665 02 03 36 02 07 00 J1639+8631 21 20 35 44.8 355.3 4.8 105.0 -21 2665 No stop 02 08 30 =1654+866 21 22 05 44.8 355.3 4.8 104.6 69 2677 02 07 01 02 08 30 PSJ1721+8842 21 22 05 44.3 358.3 4.3 114.2 -21 2677 No stop 02 11 55 --- 21 25 31 44.3 358.3 4.4 113.4 184 2703 02 08 31 02 12 40 J1639+8631 21 26 16 44.7 355.3 4.9 103.6 24 2703 02 12 40 02 14 05 =1654+866 21 27 41 44.7 355.3 4.9 103.2 85 2714 02 12 41 02 14 05 PSJ1721+8842 21 27 41 44.3 358.3 4.4 112.8 -21 2714 No stop 02 17 30 --- 21 31 07 44.3 358.3 4.5 112.0 184 2740 02 14 06 02 17 30 J1639+8631 21 31 07 44.6 355.2 5.0 102.3 -21 2740 No stop 02 19 00 =1654+866 21 32 37 44.6 355.2 5.0 101.9 69 2752 02 17 31 02 19 00 PSJ1721+8842 21 32 37 44.3 358.3 4.5 111.6 -21 2752 No stop 02 22 25 --- 21 36 03 44.3 358.3 4.5 110.7 184 2778 02 19 01 02 23 10 J1639+8631 21 36 48 44.6 355.2 5.1 100.9 24 2778 02 23 10 02 24 35 =1654+866 21 38 13 44.5 355.2 5.1 100.5 85 2789 02 23 11 02 24 35 PSJ1721+8842 21 38 13 44.3 358.3 4.6 110.2 -21 2789 No stop 02 28 00 --- 21 41 39 44.2 358.3 4.6 109.3 184 2815 02 24 36 02 28 00 J1639+8631 21 41 39 44.5 355.2 5.1 99.7 -21 2815 No stop 02 29 30 =1654+866 21 43 09 44.5 355.2 5.2 99.3 69 2827 02 28 01 Schedule for ZELENCHK (Code Zc ) Page 12 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 02 29 30 PSJ1721+8842 21 43 09 44.2 358.3 4.7 108.9 -21 2827 No stop 02 32 55 --- 21 46 34 44.2 358.3 4.7 108.1 184 2853 02 29 31 02 33 40 J1639+8631 21 47 20 44.4 355.2 5.2 98.2 24 2853 02 33 40 02 35 05 =1654+866 21 48 45 44.4 355.2 5.3 97.9 85 2864 02 33 41 02 35 05 PSJ1721+8842 21 48 45 44.2 358.3 4.8 107.5 -21 2864 No stop 02 38 30 --- 21 52 10 44.2 358.2 4.8 106.7 184 2890 02 35 06 02 38 30 J1639+8631 21 52 10 44.3 355.2 5.3 97.0 -21 2890 No stop 02 40 00 =1654+866 21 53 41 44.3 355.2 5.3 96.6 69 2902 02 38 31 02 40 00 PSJ1721+8842 21 53 41 44.2 358.2 4.8 106.3 -21 2902 No stop 02 43 25 --- 21 57 06 44.2 358.2 4.9 105.4 184 2928 02 40 01 02 44 10 J1639+8631 21 57 51 44.2 355.2 5.4 95.6 24 2928 02 44 10 02 45 35 =1654+866 21 59 17 44.2 355.2 5.4 95.2 85 2939 02 44 11 02 45 35 PSJ1721+8842 21 59 17 44.1 358.2 4.9 104.9 -21 2939 No stop 02 49 00 --- 22 02 42 44.1 358.2 5.0 104.0 184 2965 02 45 36 02 49 00 J1639+8631 22 02 42 44.2 355.1 5.5 94.4 -21 2965 No stop 02 50 30 =1654+866 22 04 12 44.1 355.1 5.5 94.0 69 2977 02 49 01 02 50 30 PSJ1721+8842 22 04 12 44.1 358.2 5.0 103.6 -21 2977 No stop 02 53 55 --- 22 07 38 44.1 358.2 5.1 102.8 184 3003 02 50 31 02 54 40 J1639+8631 22 08 23 44.1 355.1 5.6 93.0 24 3003 02 54 40 02 56 05 =1654+866 22 09 48 44.1 355.1 5.6 92.6 85 3014 02 54 41 02 56 05 PSJ1721+8842 22 09 48 44.1 358.2 5.1 102.2 -21 3014 No stop 02 59 30 --- 22 13 14 44.1 358.2 5.2 101.4 184 3040 02 56 06 02 59 30 J1639+8631 22 13 14 44.0 355.1 5.7 91.7 -21 3040 No stop 03 01 00 =1654+866 22 14 44 44.0 355.1 5.7 91.4 69 3052 02 59 31 03 01 00 PSJ1721+8842 22 14 44 44.1 358.2 5.2 101.0 -21 3052 No stop 03 04 25 --- 22 18 10 44.0 358.2 5.2 100.1 184 3078 03 01 01 03 05 10 J1639+8631 22 18 55 43.9 355.1 5.8 90.3 24 3078 03 05 10 03 06 35 =1654+866 22 20 20 43.9 355.1 5.8 90.0 85 3089 03 05 11 03 06 35 PSJ1721+8842 22 20 20 44.0 358.2 5.3 99.6 -21 3089 No stop 03 10 00 --- 22 23 46 44.0 358.2 5.3 98.7 184 3115 03 06 36 Schedule for ZELENCHK (Code Zc ) Page 13 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 03 10 00 J1639+8631 22 23 46 43.8 355.1 5.8 89.1 -21 3115 No stop 03 11 30 =1654+866 22 25 16 43.8 355.1 5.9 88.7 69 3127 03 10 01 03 11 30 PSJ1721+8842 22 25 16 44.0 358.2 5.4 98.3 -21 3127 No stop 03 14 55 --- 22 28 41 44.0 358.2 5.4 97.5 184 3153 03 11 31 03 15 40 J1639+8631 22 29 26 43.7 355.1 5.9 87.7 24 3153 03 15 40 03 17 05 =1654+866 22 30 52 43.7 355.1 6.0 87.3 85 3164 03 15 41 03 17 05 PSJ1721+8842 22 30 52 44.0 358.2 5.5 96.9 -21 3164 No stop 03 20 30 --- 22 34 17 43.9 358.2 5.5 96.1 184 3190 03 17 06 03 20 30 J1639+8631 22 34 17 43.7 355.1 6.0 86.5 -21 3190 No stop 03 22 00 =1654+866 22 35 48 43.7 355.1 6.0 86.1 69 3202 03 20 31 03 22 00 PSJ1721+8842 22 35 48 43.9 358.2 5.5 95.7 -21 3202 No stop 03 25 25 --- 22 39 13 43.9 358.2 5.6 94.8 184 3228 03 22 01 03 26 10 J1639+8631 22 39 58 43.6 355.2 6.1 85.1 24 3228 03 26 10 03 27 35 =1654+866 22 41 23 43.6 355.2 6.1 84.7 85 3239 03 26 11 03 27 35 PSJ1721+8842 22 41 23 43.9 358.2 5.6 94.3 -21 3239 No stop 03 31 00 --- 22 44 49 43.9 358.2 5.7 93.4 184 3265 03 27 36 03 31 00 J1639+8631 22 44 49 43.5 355.2 6.2 83.9 -21 3265 No stop 03 32 30 =1654+866 22 46 19 43.5 355.2 6.2 83.5 69 3277 03 31 01 03 32 30 PSJ1721+8842 22 46 19 43.9 358.2 5.7 93.1 -21 3277 No stop 03 35 55 --- 22 49 45 43.9 358.2 5.8 92.2 184 3303 03 32 31 03 36 40 J1639+8631 22 50 30 43.4 355.2 6.3 82.5 25 3303 03 36 40 03 38 05 =1654+866 22 51 55 43.4 355.2 6.3 82.1 85 3314 03 36 41 03 38 05 PSJ1721+8842 22 51 55 43.8 358.2 5.8 91.7 -20 3314 No stop 03 41 30 --- 22 55 21 43.8 358.2 5.9 90.8 185 3340 03 38 06 03 41 30 J1639+8631 22 55 21 43.4 355.2 6.4 81.3 -20 3340 No stop 03 43 00 =1654+866 22 56 51 43.3 355.2 6.4 80.9 70 3352 03 41 31 03 43 00 PSJ1721+8842 22 56 51 43.8 358.2 5.9 90.4 -20 3352 No stop 03 46 25 --- 23 00 17 43.8 358.2 5.9 89.6 185 3378 03 43 01 03 47 10 J1639+8631 23 01 02 43.3 355.2 6.5 79.9 25 3378 03 47 10 03 48 35 =1654+866 23 02 27 43.2 355.2 6.5 79.5 85 3389 03 47 11 Schedule for ZELENCHK (Code Zc ) Page 14 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 03 48 35 PSJ1721+8842 23 02 27 43.8 358.2 6.0 89.0 -20 3389 No stop 03 52 00 --- 23 05 52 43.8 358.2 6.0 88.2 185 3415 03 48 36 03 52 00 J1639+8631 23 05 52 43.2 355.2 6.5 78.7 -20 3415 No stop 03 53 30 =1654+866 23 07 23 43.2 355.2 6.6 78.3 70 3427 03 52 01 03 53 30 PSJ1721+8842 23 07 23 43.8 358.2 6.1 87.8 -20 3427 No stop 03 56 55 --- 23 10 48 43.7 358.2 6.1 87.0 185 3453 03 53 31 03 57 40 J1639+8631 23 11 33 43.1 355.3 6.6 77.3 25 3453 03 57 40 03 59 05 =1654+866 23 12 59 43.1 355.3 6.7 76.9 85 3464 03 57 41 03 59 05 PSJ1721+8842 23 12 59 43.7 358.2 6.2 86.4 -20 3464 No stop 04 02 30 --- 23 16 24 43.7 358.2 6.2 85.6 185 3490 03 59 06 04 02 30 J1639+8631 23 16 24 43.0 355.3 6.7 76.1 -20 3490 No stop 04 04 00 =1654+866 23 17 54 43.0 355.3 6.7 75.7 70 3502 04 02 31 04 04 00 PSJ1721+8842 23 17 54 43.7 358.2 6.2 85.2 -20 3502 No stop 04 07 25 --- 23 21 20 43.7 358.2 6.3 84.3 185 3528 04 04 01 04 08 10 J1639+8631 23 22 05 43.0 355.3 6.8 74.7 25 3528 04 08 10 04 09 35 =1654+866 23 23 30 42.9 355.3 6.8 74.3 85 3539 04 08 11 04 09 35 PSJ1721+8842 23 23 30 43.7 358.2 6.3 83.8 -20 3539 No stop 04 13 00 --- 23 26 56 43.6 358.2 6.4 82.9 185 3565 04 09 36 04 13 00 J1639+8631 23 26 56 42.9 355.3 6.9 73.5 -20 3565 No stop 04 14 30 =1654+866 23 28 26 42.9 355.3 6.9 73.1 70 3577 04 13 01 04 14 30 PSJ1721+8842 23 28 26 43.6 358.2 6.4 82.6 -20 3577 No stop 04 17 55 --- 23 31 52 43.6 358.2 6.5 81.7 185 3603 04 14 31 04 18 40 J1639+8631 23 32 37 42.8 355.4 7.0 72.1 25 3603 04 18 40 04 20 05 =1654+866 23 34 02 42.8 355.4 7.0 71.7 85 3614 04 18 41 04 20 05 PSJ1721+8842 23 34 02 43.6 358.2 6.5 81.2 -20 3614 No stop 04 23 30 --- 23 37 28 43.6 358.2 6.6 80.3 185 3640 04 20 06 04 23 30 J1639+8631 23 37 28 42.7 355.4 7.1 70.9 -20 3640 No stop 04 25 00 =1654+866 23 38 58 42.7 355.4 7.1 70.5 70 3652 04 23 31 04 25 00 PSJ1721+8842 23 38 58 43.6 358.2 6.6 79.9 -20 3652 No stop 04 28 25 --- 23 42 23 43.6 358.2 6.6 79.1 185 3678 04 25 01 Schedule for ZELENCHK (Code Zc ) Page 15 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 04 29 10 J1639+8631 23 43 09 42.6 355.4 7.2 69.5 25 3678 04 29 10 04 30 35 =1654+866 23 44 34 42.6 355.5 7.2 69.2 85 3689 04 29 11 04 30 35 PSJ1721+8842 23 44 34 43.5 358.2 6.7 78.5 -20 3689 No stop 04 34 00 --- 23 47 59 43.5 358.2 6.7 77.7 185 3715 04 30 36 04 34 00 J1639+8631 23 47 59 42.6 355.5 7.2 68.3 -20 3715 No stop 04 35 30 =1654+866 23 49 30 42.6 355.5 7.3 68.0 70 3727 04 34 01 04 35 30 PSJ1721+8842 23 49 30 43.5 358.2 6.8 77.3 -20 3727 No stop 04 38 55 --- 23 52 55 43.5 358.2 6.8 76.5 185 3753 04 35 31 04 39 40 J1639+8631 23 53 40 42.5 355.5 7.3 66.9 25 3753 04 39 40 04 41 05 =1654+866 23 55 06 42.5 355.5 7.4 66.6 85 3764 04 39 41 04 41 05 PSJ1721+8842 23 55 06 43.5 358.2 6.9 75.9 -20 3764 No stop 04 44 30 --- 23 58 31 43.5 358.2 6.9 75.1 185 3790 04 41 06 04 44 30 J1639+8631 23 58 31 42.4 355.6 7.4 65.8 -20 3790 No stop 04 46 00 =1654+866 00 00 01 42.4 355.6 7.4 65.4 70 3802 04 44 31 04 46 00 PSJ1721+8842 00 00 01 43.5 358.2 6.9 74.7 -20 3802 No stop 04 49 25 --- 00 03 27 43.4 358.2 7.0 73.8 185 3828 04 46 01 04 50 10 J1639+8631 00 04 12 42.4 355.6 7.5 64.4 25 3828 04 50 10 04 51 35 =1654+866 00 05 37 42.3 355.6 7.5 64.0 85 3839 04 50 11 04 51 35 PSJ1721+8842 00 05 37 43.4 358.2 7.0 73.3 -19 3839 No stop 04 55 00 --- 00 09 03 43.4 358.3 7.1 72.5 186 3865 04 51 36 04 55 00 J1639+8631 00 09 03 42.3 355.7 7.6 63.2 -19 3865 No stop 04 56 30 =1654+866 00 10 33 42.3 355.7 7.6 62.8 71 3877 04 55 01 04 56 30 PSJ1721+8842 00 10 33 43.4 358.3 7.1 72.1 -19 3877 No stop 04 59 55 --- 00 13 59 43.4 358.3 7.2 71.2 186 3903 04 56 31 05 00 40 J1639+8631 00 14 44 42.2 355.7 7.7 61.8 26 3903 05 00 40 05 02 05 =1654+866 00 16 09 42.2 355.7 7.7 61.5 85 3914 05 00 41 05 02 05 PSJ1721+8842 00 16 09 43.4 358.3 7.2 70.7 -19 3914 No stop 05 05 30 --- 00 19 35 43.3 358.3 7.3 69.8 186 3940 05 02 06 05 05 30 J1639+8631 00 19 35 42.1 355.8 7.8 60.6 -19 3940 No stop 05 07 00 =1654+866 00 21 05 42.1 355.8 7.8 60.3 71 3952 05 05 31 Schedule for ZELENCHK (Code Zc ) Page 16 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 05 07 00 PSJ1721+8842 00 21 05 43.3 358.3 7.3 69.5 -19 3952 No stop 05 10 25 --- 00 24 30 43.3 358.3 7.3 68.6 186 3978 05 07 01 05 11 10 J1639+8631 00 25 15 42.1 355.8 7.9 59.3 26 3978 05 11 10 05 12 35 =1654+866 00 26 41 42.0 355.8 7.9 58.9 85 3989 05 11 11 05 12 35 PSJ1721+8842 00 26 41 43.3 358.3 7.4 68.1 -19 3989 No stop 05 16 00 --- 00 30 06 43.3 358.3 7.4 67.2 186 4015 05 12 36 05 16 00 J1639+8631 00 30 06 42.0 355.9 7.9 58.1 -19 4015 No stop 05 17 30 =1654+866 00 31 36 42.0 355.9 8.0 57.7 71 4027 05 16 01 05 17 30 PSJ1721+8842 00 31 36 43.3 358.3 7.5 66.9 -19 4027 No stop 05 20 55 --- 00 35 02 43.3 358.3 7.5 66.0 186 4053 05 17 31 05 21 40 J1639+8631 00 35 47 41.9 355.9 8.0 56.7 26 4053 05 21 40 05 23 05 =1654+866 00 37 12 41.9 355.9 8.1 56.4 85 4064 05 21 41 05 23 05 PSJ1721+8842 00 37 12 43.3 358.3 7.6 65.5 -19 4064 No stop 05 26 30 --- 00 40 38 43.2 358.3 7.6 64.6 186 4090 05 23 06 05 26 30 J1639+8631 00 40 38 41.9 356.0 8.1 55.5 -19 4090 No stop 05 28 00 =1654+866 00 42 08 41.9 356.0 8.1 55.2 71 4102 05 26 31 05 28 00 PSJ1721+8842 00 42 08 43.2 358.4 7.6 64.2 -19 4102 No stop 05 31 25 --- 00 45 34 43.2 358.4 7.7 63.4 186 4128 05 28 01 05 32 10 J1639+8631 00 46 19 41.8 356.1 8.2 54.2 26 4128 05 32 10 05 33 35 =1654+866 00 47 44 41.8 356.1 8.2 53.8 85 4139 05 32 11 05 33 35 PSJ1721+8842 00 47 44 43.2 358.4 7.7 62.9 -19 4139 No stop 05 37 00 --- 00 51 10 43.2 358.4 7.8 62.0 186 4165 05 33 36 05 37 00 J1639+8631 00 51 10 41.7 356.1 8.3 53.0 -18 4165 No stop 05 38 30 =1654+866 00 52 40 41.7 356.1 8.3 52.6 72 4177 05 37 01 05 43 30 3C84 00 57 41 63.7 442.2 -2.4 -73.0 189 4177 05 43 30 05 48 30 --- 01 02 42 64.6 442.9 -2.3 -73.3 300 4215 05 43 31 05 53 30 J1639+8631 01 07 42 41.5 356.3 8.6 49.0 188 4215 05 53 30 05 58 30 =1654+866 01 12 43 41.5 356.4 8.7 47.8 300 4254 05 53 31 05 58 30 PSJ1721+8842 01 12 43 43.1 358.5 8.2 56.7 -18 4254 No stop 06 01 55 --- 01 16 09 43.1 358.5 8.2 55.8 187 4280 05 58 31 Schedule for ZELENCHK (Code Zc ) Page 17 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 06 02 40 J1639+8631 01 16 54 41.4 356.5 8.7 46.8 27 4280 06 02 40 06 04 05 =1654+866 01 18 19 41.4 356.5 8.7 46.5 85 4291 06 02 41 06 04 05 PSJ1721+8842 01 18 19 43.0 358.5 8.2 55.3 -18 4291 No stop 06 07 30 --- 01 21 45 43.0 358.5 8.3 54.5 187 4317 06 04 06 06 07 30 J1639+8631 01 21 45 41.4 356.5 8.8 45.6 -18 4317 No stop 06 09 00 =1654+866 01 23 15 41.4 356.5 8.8 45.3 72 4329 06 07 31 06 09 00 PSJ1721+8842 01 23 15 43.0 358.5 8.3 54.1 -18 4329 No stop 06 12 25 --- 01 26 41 43.0 358.5 8.4 53.2 187 4355 06 09 01 06 13 10 J1639+8631 01 27 26 41.3 356.6 8.9 44.3 28 4355 06 13 10 06 14 35 =1654+866 01 28 51 41.3 356.6 8.9 43.9 85 4366 06 13 11 06 14 35 PSJ1721+8842 01 28 51 43.0 358.5 8.4 52.7 -17 4366 No stop 06 18 00 --- 01 32 16 43.0 358.6 8.5 51.9 188 4392 06 14 36 06 18 00 J1639+8631 01 32 16 41.3 356.7 9.0 43.1 -17 4392 No stop 06 19 30 =1654+866 01 33 47 41.3 356.7 9.0 42.7 73 4404 06 18 01 06 19 30 PSJ1721+8842 01 33 47 43.0 358.6 8.5 51.5 -17 4404 No stop 06 22 55 --- 01 37 12 43.0 358.6 8.6 50.6 188 4430 06 19 31 06 23 40 J1639+8631 01 37 57 41.2 356.8 9.1 41.7 28 4430 06 23 40 06 25 05 =1654+866 01 39 23 41.2 356.8 9.1 41.4 85 4441 06 23 41 06 25 05 PSJ1721+8842 01 39 23 42.9 358.6 8.6 50.1 -17 4441 No stop 06 28 30 --- 01 42 48 42.9 358.6 8.7 49.3 188 4467 06 25 06 06 28 30 J1639+8631 01 42 48 41.2 356.8 9.2 40.6 -17 4467 No stop 06 30 00 =1654+866 01 44 18 41.1 356.9 9.2 40.2 73 4479 06 28 31 06 30 00 PSJ1721+8842 01 44 18 42.9 358.6 8.7 48.9 -17 4479 No stop 06 33 25 --- 01 47 44 42.9 358.6 8.7 48.0 188 4505 06 30 01 06 34 10 J1639+8631 01 48 29 41.1 356.9 9.2 39.2 28 4505 06 34 10 06 35 35 =1654+866 01 49 54 41.1 356.9 9.3 38.9 85 4516 06 34 11 06 35 35 PSJ1721+8842 01 49 54 42.9 358.7 8.8 47.5 -17 4516 No stop 06 39 00 --- 01 53 20 42.9 358.7 8.8 46.7 188 4542 06 35 36 06 39 00 J1639+8631 01 53 20 41.1 357.0 9.3 38.1 -17 4542 No stop 06 40 30 =1654+866 01 54 50 41.0 357.0 9.4 37.7 73 4554 06 39 01 Schedule for ZELENCHK (Code Zc ) Page 18 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 06 40 30 PSJ1721+8842 01 54 50 42.9 358.7 8.9 46.3 -17 4554 No stop 06 43 55 --- 01 58 16 42.9 358.7 8.9 45.5 188 4580 06 40 31 06 44 40 J1639+8631 01 59 01 41.0 357.1 9.4 36.7 28 4580 06 44 40 06 46 05 =1654+866 02 00 26 41.0 357.1 9.4 36.4 85 4591 06 44 41 06 46 05 PSJ1721+8842 02 00 26 42.9 358.7 8.9 44.9 -17 4591 No stop 06 49 30 --- 02 03 52 42.8 358.7 9.0 44.1 188 4617 06 46 06 06 49 30 J1639+8631 02 03 52 41.0 357.2 9.5 35.6 -17 4617 No stop 06 51 00 =1654+866 02 05 22 41.0 357.2 9.5 35.2 73 4629 06 49 31 06 51 00 PSJ1721+8842 02 05 22 42.8 358.7 9.0 43.7 -17 4629 No stop 06 54 25 --- 02 08 47 42.8 358.8 9.1 42.9 188 4655 06 51 01 06 55 10 J1639+8631 02 09 33 40.9 357.3 9.6 34.2 28 4655 06 55 10 06 56 35 =1654+866 02 10 58 40.9 357.3 9.6 33.9 85 4666 06 55 11 06 56 35 PSJ1721+8842 02 10 58 42.8 358.8 9.1 42.3 -17 4666 No stop 07 00 00 --- 02 14 23 42.8 358.8 9.2 41.5 188 4692 06 56 36 07 00 00 J1639+8631 02 14 23 40.9 357.3 9.7 33.0 -17 4692 No stop 07 01 30 =1654+866 02 15 54 40.9 357.4 9.7 32.7 73 4704 07 00 01 07 01 30 PSJ1721+8842 02 15 54 42.8 358.8 9.2 41.1 -17 4704 No stop 07 04 55 --- 02 19 19 42.8 358.8 9.3 40.3 188 4730 07 01 31 07 05 40 J1639+8631 02 20 04 40.8 357.4 9.8 31.7 27 4730 07 05 40 07 07 05 =1654+866 02 21 29 40.8 357.5 9.8 31.3 85 4741 07 05 41 07 07 05 PSJ1721+8842 02 21 29 42.8 358.8 9.3 39.7 -18 4741 No stop 07 10 30 --- 02 24 55 42.8 358.9 9.4 38.9 187 4767 07 07 06 07 10 30 J1639+8631 02 24 55 40.8 357.5 9.9 30.5 -18 4767 No stop 07 12 00 =1654+866 02 26 25 40.8 357.6 9.9 30.2 72 4779 07 10 31 07 12 00 PSJ1721+8842 02 26 25 42.8 358.9 9.4 38.5 -18 4779 No stop 07 15 25 --- 02 29 51 42.7 358.9 9.4 37.7 187 4805 07 12 01 07 16 10 J1639+8631 02 30 36 40.7 357.6 9.9 29.2 27 4805 07 16 10 07 17 35 =1654+866 02 32 01 40.7 357.7 10.0 28.8 85 4816 07 16 11 07 17 35 PSJ1721+8842 02 32 01 42.7 358.9 9.5 37.2 -18 4816 No stop 07 21 00 --- 02 35 27 42.7 358.9 9.5 36.3 187 4842 07 17 36 Schedule for ZELENCHK (Code Zc ) Page 19 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 29 May 2021 Day 149 --- 07 21 00 J1639+8631 02 35 27 40.7 357.7 10.0 28.0 -18 4842 No stop 07 22 30 =1654+866 02 36 57 40.7 357.7 10.1 27.7 72 4854 07 21 01 07 22 30 PSJ1721+8842 02 36 57 42.7 358.9 9.6 35.9 -18 4854 No stop 07 25 55 --- 02 40 23 42.7 358.9 9.6 35.1 187 4880 07 22 31 07 26 40 J1639+8631 02 41 08 40.7 357.8 10.1 26.7 27 4880 07 26 40 07 28 05 =1654+866 02 42 33 40.7 357.8 10.1 26.3 85 4891 07 26 41 07 28 05 PSJ1721+8842 02 42 33 42.7 359.0 9.6 34.6 -18 4891 No stop 07 30 30 --- 02 44 58 42.7 359.0 9.7 34.0 127 4910 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 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 ****** Only 251.02 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 2 Station: ZELENCHK Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 366.49 366.49 366.49 366.49 430.49 430.49 430.49 430.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 9 10 11 Track assignments are: track1= 10, 14, 2, 6, 12, 16, 4, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * PSJ1721+8842 18 08 47.084813 * 17 21 43.936000 17 03 39.644560 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