COVER INFORMATION Station: PICKMERE (Code Pi ) Experiment: Resolving a gravitationally lensed dual back-hole system at z = 2.37 Exp. Code: em153b Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: John McKean Address: ASTRON Postbus 2 7990 AA, Dwingeloo the Netherlands Phone: +31 521 595 780 EMAIL: mckean@astron.nl Fax: +31 521 595 101 Phone during observation: +31 624 328 991 Observing mode: 18cm 1024-8-2 Notes: Schedule for PICKMERE (Code Pi ) Page 2 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- Next scan frequencies: 1626.49 1626.49 Next BBC frequencies: 645.51 645.51 Next scan bandwidths: 64.00 64.00 18 00 00 J1639+8631 10 43 49 53.3 5.9 -5.8 -87.8 0 0 18 00 00 18 01 30 =1654+866 10 45 19 53.3 5.9 -5.8 -88.2 90 6 18 00 01 18 01 30 PSJ1721+8842 10 45 19 53.2 2.2 -6.3 -83.7 -32 6 No stop 18 04 55 --- 10 48 44 53.2 2.2 -6.2 -84.5 173 19 18 01 31 18 05 40 J1639+8631 10 49 29 53.4 5.9 -5.7 -89.2 13 19 18 05 40 18 07 05 =1654+866 10 50 55 53.4 5.9 -5.7 -89.6 85 24 18 05 41 18 07 05 PSJ1721+8842 10 50 55 53.2 2.2 -6.2 -85.1 -32 24 No stop 18 10 30 --- 10 54 20 53.2 2.2 -6.2 -85.9 173 38 18 07 06 18 10 30 J1639+8631 10 54 20 53.5 5.9 -5.7 -90.4 -32 38 No stop 18 12 00 =1654+866 10 55 51 53.5 5.9 -5.6 -90.8 58 43 18 10 31 18 12 00 PSJ1721+8842 10 55 51 53.2 2.2 -6.1 -86.3 -32 43 No stop 18 15 25 --- 10 59 16 53.2 2.2 -6.1 -87.1 173 57 18 12 01 18 16 10 J1639+8631 11 00 01 53.5 5.9 -5.6 -91.9 13 57 18 16 10 18 17 35 =1654+866 11 01 26 53.6 5.9 -5.5 -92.2 85 62 18 16 11 18 17 35 PSJ1721+8842 11 01 26 53.3 2.2 -6.0 -87.7 -32 62 No stop 18 21 00 --- 11 04 52 53.3 2.2 -6.0 -88.5 173 75 18 17 36 18 21 00 J1639+8631 11 04 52 53.6 5.9 -5.5 -93.1 -32 75 No stop 18 22 30 =1654+866 11 06 22 53.6 5.9 -5.5 -93.5 58 81 18 21 01 18 22 30 PSJ1721+8842 11 06 22 53.3 2.2 -6.0 -88.9 -32 81 No stop 18 25 55 --- 11 09 48 53.3 2.2 -5.9 -89.8 173 94 18 22 31 18 26 40 J1639+8631 11 10 33 53.7 5.9 -5.4 -94.5 13 94 18 26 40 18 28 05 =1654+866 11 11 58 53.7 5.9 -5.4 -94.9 85 100 18 26 41 18 28 05 PSJ1721+8842 11 11 58 53.3 2.2 -5.9 -90.3 -32 100 No stop 18 31 30 --- 11 15 24 53.3 2.2 -5.8 -91.2 173 113 18 28 06 18 31 30 J1639+8631 11 15 24 53.8 5.8 -5.3 -95.7 -32 113 No stop 18 33 00 =1654+866 11 16 54 53.8 5.8 -5.3 -96.1 58 119 18 31 31 18 33 00 PSJ1721+8842 11 16 54 53.3 2.2 -5.8 -91.5 -32 119 No stop 18 36 25 --- 11 20 20 53.4 2.2 -5.7 -92.4 173 132 18 33 01 Schedule for PICKMERE (Code Pi ) Page 3 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 18 37 10 J1639+8631 11 21 05 53.9 5.8 -5.2 -97.2 13 132 18 37 10 18 38 35 =1654+866 11 22 30 53.9 5.8 -5.2 -97.5 85 138 18 37 11 18 38 35 PSJ1721+8842 11 22 30 53.4 2.2 -5.7 -92.9 -32 138 No stop 18 42 00 --- 11 25 55 53.4 2.2 -5.6 -93.8 173 151 18 38 36 18 42 00 J1639+8631 11 25 55 53.9 5.8 -5.1 -98.4 -32 151 No stop 18 43 30 =1654+866 11 27 26 54.0 5.8 -5.1 -98.8 58 157 18 42 01 18 43 30 PSJ1721+8842 11 27 26 53.4 2.2 -5.6 -94.2 -32 157 No stop 18 46 55 --- 11 30 51 53.4 2.2 -5.5 -95.0 173 170 18 43 31 18 47 40 J1639+8631 11 31 36 54.0 5.8 -5.0 -99.8 13 170 18 47 40 18 49 05 =1654+866 11 33 02 54.0 5.8 -5.0 -100.2 85 175 18 47 41 18 49 05 PSJ1721+8842 11 33 02 53.4 2.2 -5.5 -95.6 -32 175 No stop 18 52 30 --- 11 36 27 53.5 2.2 -5.5 -96.4 173 188 18 49 06 18 52 30 J1639+8631 11 36 27 54.1 5.8 -5.0 -101.0 -32 188 No stop 18 54 00 =1654+866 11 37 57 54.1 5.8 -4.9 -101.4 58 194 18 52 31 18 54 00 PSJ1721+8842 11 37 57 53.5 2.2 -5.4 -96.8 -32 194 No stop 18 57 25 --- 11 41 23 53.5 2.2 -5.4 -97.7 173 207 18 54 01 18 58 10 J1639+8631 11 42 08 54.2 5.7 -4.9 -102.5 13 207 18 58 10 18 59 35 =1654+866 11 43 33 54.2 5.7 -4.8 -102.8 85 213 18 58 11 18 59 35 PSJ1721+8842 11 43 33 53.5 2.2 -5.3 -98.2 -32 213 No stop 19 03 00 --- 11 46 59 53.5 2.2 -5.3 -99.1 173 226 18 59 36 19 03 00 J1639+8631 11 46 59 54.3 5.7 -4.8 -103.7 -32 226 No stop 19 04 30 =1654+866 11 48 29 54.3 5.7 -4.8 -104.1 58 232 19 03 01 19 04 30 PSJ1721+8842 11 48 29 53.5 2.2 -5.3 -99.5 -32 232 No stop 19 07 55 --- 11 51 55 53.5 2.2 -5.2 -100.3 173 245 19 04 31 19 08 40 J1639+8631 11 52 40 54.3 5.7 -4.7 -105.2 13 245 19 08 40 19 10 05 =1654+866 11 54 05 54.4 5.7 -4.7 -105.5 85 251 19 08 41 19 10 05 PSJ1721+8842 11 54 05 53.6 2.2 -5.2 -100.9 -32 251 No stop 19 13 30 --- 11 57 31 53.6 2.2 -5.1 -101.7 173 264 19 10 06 19 13 30 J1639+8631 11 57 31 54.4 5.6 -4.6 -106.4 -31 264 No stop 19 15 00 =1654+866 11 59 01 54.4 5.6 -4.6 -106.8 59 270 19 13 31 Schedule for PICKMERE (Code Pi ) Page 4 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 19 15 00 PSJ1721+8842 11 59 01 53.6 2.2 -5.1 -102.1 -31 270 No stop 19 18 25 --- 12 02 26 53.6 2.2 -5.0 -103.0 174 283 19 15 01 19 19 10 J1639+8631 12 03 12 54.5 5.6 -4.5 -107.9 14 283 19 19 10 19 20 35 =1654+866 12 04 37 54.5 5.6 -4.5 -108.2 85 288 19 19 11 19 20 35 PSJ1721+8842 12 04 37 53.6 2.1 -5.0 -103.5 -31 288 No stop 19 24 00 --- 12 08 02 53.6 2.1 -4.9 -104.4 174 301 19 20 36 19 24 00 J1639+8631 12 08 02 54.6 5.6 -4.4 -109.1 -31 301 No stop 19 25 30 =1654+866 12 09 33 54.6 5.5 -4.4 -109.5 59 307 19 24 01 19 30 30 3C345 12 14 33 43.6 78.5 -4.5 -49.6 59 307 19 30 30 19 35 30 --- 12 19 34 44.4 79.3 -4.4 -49.8 300 327 19 30 31 19 40 30 J1639+8631 12 24 35 54.8 5.4 -4.2 -113.4 55 327 19 40 30 19 45 30 =1654+866 12 29 36 54.9 5.3 -4.1 -114.7 300 346 19 40 31 19 45 30 PSJ1721+8842 12 29 36 53.8 2.1 -4.6 -109.8 -31 346 No stop 19 48 55 --- 12 33 01 53.8 2.1 -4.5 -110.7 174 359 19 45 31 19 49 40 J1639+8631 12 33 47 54.9 5.3 -4.0 -115.7 15 359 19 49 40 19 51 05 =1654+866 12 35 12 55.0 5.3 -4.0 -116.1 85 365 19 49 41 19 51 05 PSJ1721+8842 12 35 12 53.8 2.1 -4.5 -111.2 -30 365 No stop 19 54 30 --- 12 38 37 53.8 2.0 -4.4 -112.1 175 378 19 51 06 19 54 30 J1639+8631 12 38 37 55.0 5.2 -3.9 -117.0 -30 378 No stop 19 56 00 =1654+866 12 40 08 55.0 5.2 -3.9 -117.4 60 384 19 54 31 19 56 00 PSJ1721+8842 12 40 08 53.8 2.0 -4.4 -112.5 -30 384 No stop 19 59 25 --- 12 43 33 53.8 2.0 -4.3 -113.3 175 397 19 56 01 20 00 10 J1639+8631 12 44 18 55.1 5.2 -3.8 -118.5 15 397 20 00 10 20 01 35 =1654+866 12 45 44 55.1 5.1 -3.8 -118.8 85 402 20 00 11 20 01 35 PSJ1721+8842 12 45 44 53.8 2.0 -4.3 -113.9 -30 402 No stop 20 05 00 --- 12 49 09 53.9 2.0 -4.2 -114.8 175 415 20 01 36 20 05 00 J1639+8631 12 49 09 55.1 5.1 -3.7 -119.7 -30 415 No stop 20 06 30 =1654+866 12 50 39 55.2 5.1 -3.7 -120.1 60 421 20 05 01 20 06 30 PSJ1721+8842 12 50 39 53.9 2.0 -4.2 -115.1 -30 421 No stop 20 09 55 --- 12 54 05 53.9 2.0 -4.2 -116.0 175 434 20 06 31 Schedule for PICKMERE (Code Pi ) Page 5 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 20 10 40 J1639+8631 12 54 50 55.2 5.0 -3.6 -121.2 15 434 20 10 40 20 12 05 =1654+866 12 56 15 55.2 5.0 -3.6 -121.6 85 440 20 10 41 20 12 05 PSJ1721+8842 12 56 15 53.9 2.0 -4.1 -116.6 -30 440 No stop 20 15 30 --- 12 59 41 53.9 2.0 -4.1 -117.4 175 453 20 12 06 20 15 30 J1639+8631 12 59 41 55.3 5.0 -3.6 -122.5 -29 453 No stop 20 17 00 =1654+866 13 01 11 55.3 4.9 -3.5 -122.9 61 459 20 15 31 20 17 00 PSJ1721+8842 13 01 11 53.9 2.0 -4.0 -117.8 -29 459 No stop 20 20 25 --- 13 04 37 53.9 1.9 -4.0 -118.7 176 472 20 17 01 20 21 10 J1639+8631 13 05 22 55.4 4.9 -3.5 -124.0 16 472 20 21 10 20 22 35 =1654+866 13 06 47 55.4 4.9 -3.4 -124.3 85 478 20 21 11 20 22 35 PSJ1721+8842 13 06 47 53.9 1.9 -3.9 -119.2 -29 478 No stop 20 26 00 --- 13 10 13 54.0 1.9 -3.9 -120.1 176 491 20 22 36 20 26 00 J1639+8631 13 10 13 55.4 4.8 -3.4 -125.2 -29 491 No stop 20 27 30 =1654+866 13 11 43 55.4 4.8 -3.4 -125.6 61 497 20 26 01 20 27 30 PSJ1721+8842 13 11 43 54.0 1.9 -3.9 -120.5 -29 497 No stop 20 30 55 --- 13 15 08 54.0 1.9 -3.8 -121.4 176 510 20 27 31 20 31 40 J1639+8631 13 15 53 55.5 4.7 -3.3 -126.7 16 510 20 31 40 20 33 05 =1654+866 13 17 19 55.5 4.7 -3.3 -127.1 85 515 20 31 41 20 33 05 PSJ1721+8842 13 17 19 54.0 1.9 -3.8 -121.9 -29 515 No stop 20 36 30 --- 13 20 44 54.0 1.9 -3.7 -122.8 176 528 20 33 06 20 36 30 J1639+8631 13 20 44 55.5 4.6 -3.2 -128.0 -28 528 No stop 20 38 00 =1654+866 13 22 15 55.6 4.6 -3.2 -128.4 62 534 20 36 31 20 38 00 PSJ1721+8842 13 22 15 54.0 1.8 -3.7 -123.2 -28 534 No stop 20 41 25 --- 13 25 40 54.0 1.8 -3.6 -124.0 177 547 20 38 01 20 42 10 J1639+8631 13 26 25 55.6 4.5 -3.1 -129.5 17 547 20 42 10 20 43 35 =1654+866 13 27 50 55.6 4.5 -3.1 -129.9 85 553 20 42 11 20 43 35 PSJ1721+8842 13 27 50 54.1 1.8 -3.6 -124.6 -28 553 No stop 20 47 00 --- 13 31 16 54.1 1.8 -3.5 -125.5 177 566 20 43 36 20 47 00 J1639+8631 13 31 16 55.7 4.4 -3.0 -130.8 -28 566 No stop 20 48 30 =1654+866 13 32 46 55.7 4.4 -3.0 -131.2 62 572 20 47 01 Schedule for PICKMERE (Code Pi ) Page 6 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 20 48 30 PSJ1721+8842 13 32 46 54.1 1.8 -3.5 -125.8 -28 572 No stop 20 51 55 --- 13 36 12 54.1 1.8 -3.5 -126.7 177 585 20 48 31 20 52 40 J1639+8631 13 36 57 55.7 4.3 -2.9 -132.3 18 585 20 52 40 20 54 05 =1654+866 13 38 22 55.7 4.3 -2.9 -132.7 85 591 20 52 41 20 54 05 PSJ1721+8842 13 38 22 54.1 1.8 -3.4 -127.3 -27 591 No stop 20 57 30 --- 13 41 48 54.1 1.7 -3.4 -128.1 178 604 20 54 06 20 57 30 J1639+8631 13 41 48 55.8 4.3 -2.9 -133.6 -27 604 No stop 20 59 00 =1654+866 13 43 18 55.8 4.2 -2.8 -134.0 63 610 20 57 31 20 59 00 PSJ1721+8842 13 43 18 54.1 1.7 -3.3 -128.5 -27 610 No stop 21 02 25 --- 13 46 44 54.1 1.7 -3.3 -129.4 178 623 20 59 01 21 03 10 J1639+8631 13 47 29 55.8 4.1 -2.8 -135.1 18 623 21 03 10 21 04 35 =1654+866 13 48 54 55.9 4.1 -2.7 -135.4 85 628 21 03 11 21 04 35 PSJ1721+8842 13 48 54 54.1 1.7 -3.2 -129.9 -27 628 No stop 21 08 00 --- 13 52 19 54.2 1.7 -3.2 -130.8 178 642 21 04 36 21 08 00 J1639+8631 13 52 19 55.9 4.1 -2.7 -136.4 -26 642 No stop 21 09 30 =1654+866 13 53 50 55.9 4.0 -2.7 -136.8 64 647 21 08 01 21 09 30 PSJ1721+8842 13 53 50 54.2 1.7 -3.2 -131.2 -26 647 No stop 21 12 55 --- 13 57 15 54.2 1.6 -3.1 -132.1 179 661 21 09 31 21 13 40 J1639+8631 13 58 00 56.0 3.9 -2.6 -137.9 19 661 21 13 40 21 15 05 =1654+866 13 59 26 56.0 3.9 -2.6 -138.2 85 666 21 13 41 21 15 05 PSJ1721+8842 13 59 26 54.2 1.6 -3.1 -132.6 -26 666 No stop 21 18 30 --- 14 02 51 54.2 1.6 -3.0 -133.5 179 679 21 15 06 21 18 30 J1639+8631 14 02 51 56.0 3.8 -2.5 -139.2 -26 679 No stop 21 20 00 =1654+866 14 04 21 56.0 3.8 -2.5 -139.6 64 685 21 18 31 21 20 00 PSJ1721+8842 14 04 21 54.2 1.6 -3.0 -133.9 -26 685 No stop 21 23 25 --- 14 07 47 54.2 1.6 -2.9 -134.8 179 698 21 20 01 21 24 10 J1639+8631 14 08 32 56.1 3.7 -2.4 -140.7 20 698 21 24 10 21 25 35 =1654+866 14 09 57 56.1 3.7 -2.4 -141.1 85 704 21 24 11 21 25 35 PSJ1721+8842 14 09 57 54.2 1.6 -2.9 -135.3 -25 704 No stop 21 29 00 --- 14 13 23 54.3 1.5 -2.8 -136.2 180 717 21 25 36 Schedule for PICKMERE (Code Pi ) Page 7 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 21 29 00 J1639+8631 14 13 23 56.1 3.6 -2.3 -142.0 -25 717 No stop 21 30 30 =1654+866 14 14 53 56.1 3.6 -2.3 -142.4 65 723 21 29 01 21 30 30 PSJ1721+8842 14 14 53 54.3 1.5 -2.8 -136.6 -25 723 No stop 21 33 55 --- 14 18 19 54.3 1.5 -2.8 -137.5 180 736 21 30 31 21 34 40 J1639+8631 14 19 04 56.2 3.5 -2.2 -143.5 21 736 21 34 40 21 36 05 =1654+866 14 20 29 56.2 3.5 -2.2 -143.9 85 741 21 34 41 21 36 05 PSJ1721+8842 14 20 29 54.3 1.5 -2.7 -138.0 -24 741 No stop 21 39 30 --- 14 23 55 54.3 1.5 -2.7 -138.9 181 755 21 36 06 21 39 30 J1639+8631 14 23 55 56.2 3.4 -2.2 -144.8 -24 755 No stop 21 41 00 =1654+866 14 25 25 56.2 3.4 -2.1 -145.2 66 760 21 39 31 21 41 00 PSJ1721+8842 14 25 25 54.3 1.4 -2.6 -139.3 -24 760 No stop 21 44 25 --- 14 28 50 54.3 1.4 -2.6 -140.2 181 774 21 41 01 21 45 10 J1639+8631 14 29 36 56.3 3.3 -2.1 -146.3 21 774 21 45 10 21 46 35 =1654+866 14 31 01 56.3 3.2 -2.0 -146.7 85 779 21 45 11 21 46 35 PSJ1721+8842 14 31 01 54.3 1.4 -2.5 -140.7 -24 779 No stop 21 50 00 --- 14 34 26 54.3 1.4 -2.5 -141.6 181 792 21 46 36 21 50 00 J1639+8631 14 34 26 56.3 3.1 -2.0 -147.6 -24 792 No stop 21 51 30 =1654+866 14 35 57 56.3 3.1 -2.0 -148.0 66 798 21 50 01 21 51 30 PSJ1721+8842 14 35 57 54.3 1.4 -2.5 -142.0 -24 798 No stop 21 54 55 --- 14 39 22 54.3 1.3 -2.4 -142.9 181 811 21 51 31 21 55 40 J1639+8631 14 40 07 56.3 3.0 -1.9 -149.1 21 811 21 55 40 21 57 05 =1654+866 14 41 33 56.4 3.0 -1.9 -149.5 85 817 21 55 41 21 57 05 PSJ1721+8842 14 41 33 54.4 1.3 -2.4 -143.4 -24 817 No stop 22 00 30 --- 14 44 58 54.4 1.3 -2.3 -144.3 181 830 21 57 06 22 00 30 J1639+8631 14 44 58 56.4 2.9 -1.8 -150.5 -24 830 No stop 22 02 00 =1654+866 14 46 28 56.4 2.9 -1.8 -150.9 66 836 22 00 31 22 02 00 PSJ1721+8842 14 46 28 54.4 1.3 -2.3 -144.7 -24 836 No stop 22 05 25 --- 14 49 54 54.4 1.2 -2.2 -145.6 181 849 22 02 01 22 06 10 J1639+8631 14 50 39 56.4 2.8 -1.7 -152.0 20 849 22 06 10 22 07 35 =1654+866 14 52 04 56.4 2.7 -1.7 -152.4 85 854 22 06 11 Schedule for PICKMERE (Code Pi ) Page 8 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 22 07 35 PSJ1721+8842 14 52 04 54.4 1.2 -2.2 -146.1 -25 854 No stop 22 11 00 --- 14 55 30 54.4 1.2 -2.1 -147.0 180 868 22 07 36 22 11 00 J1639+8631 14 55 30 56.5 2.6 -1.6 -153.3 -25 868 No stop 22 12 30 =1654+866 14 57 00 56.5 2.6 -1.6 -153.7 65 873 22 11 01 22 12 30 PSJ1721+8842 14 57 00 54.4 1.2 -2.1 -147.4 -25 873 No stop 22 15 55 --- 15 00 26 54.4 1.2 -2.1 -148.3 180 887 22 12 31 22 16 40 J1639+8631 15 01 11 56.5 2.5 -1.5 -154.8 20 887 22 16 40 22 18 05 =1654+866 15 02 36 56.5 2.5 -1.5 -155.2 85 892 22 16 41 22 18 05 PSJ1721+8842 15 02 36 54.4 1.1 -2.0 -148.8 -25 892 No stop 22 21 30 --- 15 06 02 54.4 1.1 -2.0 -149.7 180 905 22 18 06 22 21 30 J1639+8631 15 06 02 56.5 2.4 -1.5 -156.1 -25 905 No stop 22 23 00 =1654+866 15 07 32 56.5 2.3 -1.4 -156.5 65 911 22 21 31 22 23 00 PSJ1721+8842 15 07 32 54.4 1.1 -1.9 -150.1 -25 911 No stop 22 26 25 --- 15 10 57 54.4 1.1 -1.9 -151.0 180 924 22 23 01 22 27 10 J1639+8631 15 11 42 56.6 2.2 -1.4 -157.7 20 924 22 27 10 22 28 35 =1654+866 15 13 08 56.6 2.2 -1.3 -158.1 85 930 22 27 11 22 28 35 PSJ1721+8842 15 13 08 54.5 1.1 -1.8 -151.5 -25 930 No stop 22 32 00 --- 15 16 33 54.5 1.0 -1.8 -152.4 180 943 22 28 36 22 32 00 J1639+8631 15 16 33 56.6 2.1 -1.3 -159.0 -25 943 No stop 22 33 30 =1654+866 15 18 03 56.6 2.1 -1.3 -159.4 65 949 22 32 01 22 33 30 PSJ1721+8842 15 18 03 54.5 1.0 -1.8 -152.8 -25 949 No stop 22 36 55 --- 15 21 29 54.5 1.0 -1.7 -153.7 180 962 22 33 31 22 37 40 J1639+8631 15 22 14 56.6 2.0 -1.2 -160.5 20 962 22 37 40 22 39 05 =1654+866 15 23 39 56.6 1.9 -1.2 -160.9 85 967 22 37 41 22 39 05 PSJ1721+8842 15 23 39 54.5 1.0 -1.7 -154.2 -25 967 No stop 22 42 30 --- 15 27 05 54.5 0.9 -1.6 -155.1 180 981 22 39 06 22 42 30 J1639+8631 15 27 05 56.6 1.8 -1.1 -161.9 -25 981 No stop 22 44 00 =1654+866 15 28 35 56.6 1.8 -1.1 -162.3 65 986 22 42 31 22 44 00 PSJ1721+8842 15 28 35 54.5 0.9 -1.6 -155.5 -25 986 No stop 22 47 25 --- 15 32 01 54.5 0.9 -1.5 -156.4 180 1000 22 44 01 Schedule for PICKMERE (Code Pi ) Page 9 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 22 48 10 J1639+8631 15 32 46 56.7 1.7 -1.0 -163.4 20 1000 22 48 10 22 49 35 =1654+866 15 34 11 56.7 1.6 -1.0 -163.8 85 1005 22 48 11 22 49 35 PSJ1721+8842 15 34 11 54.5 0.9 -1.5 -156.9 -25 1005 No stop 22 53 00 --- 15 37 37 54.5 0.8 -1.4 -157.8 180 1018 22 49 36 22 53 00 J1639+8631 15 37 37 56.7 1.5 -0.9 -164.7 -25 1018 No stop 22 54 30 =1654+866 15 39 07 56.7 1.5 -0.9 -165.1 65 1024 22 53 01 22 54 30 PSJ1721+8842 15 39 07 54.5 0.8 -1.4 -158.2 -25 1024 No stop 22 57 55 --- 15 42 32 54.5 0.8 -1.4 -159.1 180 1037 22 54 31 22 58 40 J1639+8631 15 43 18 56.7 1.4 -0.8 -166.3 20 1037 22 58 40 23 00 05 =1654+866 15 44 43 56.7 1.4 -0.8 -166.6 85 1043 22 58 41 23 00 05 PSJ1721+8842 15 44 43 54.5 0.8 -1.3 -159.6 -25 1043 No stop 23 03 30 --- 15 48 08 54.5 0.7 -1.3 -160.5 180 1056 23 00 06 23 03 30 J1639+8631 15 48 08 56.7 1.3 -0.8 -167.6 -25 1056 No stop 23 05 00 =1654+866 15 49 39 56.7 1.2 -0.7 -168.0 65 1062 23 03 31 23 05 00 PSJ1721+8842 15 49 39 54.5 0.7 -1.2 -160.9 -25 1062 No stop 23 08 25 --- 15 53 04 54.5 0.7 -1.2 -161.8 180 1075 23 05 01 23 09 10 J1639+8631 15 53 49 56.7 1.1 -0.7 -169.1 20 1075 23 09 10 23 10 35 =1654+866 15 55 15 56.7 1.1 -0.6 -169.5 85 1080 23 09 11 23 10 35 PSJ1721+8842 15 55 15 54.5 0.7 -1.1 -162.4 -25 1080 No stop 23 14 00 --- 15 58 40 54.6 0.6 -1.1 -163.2 180 1094 23 10 36 23 14 00 J1639+8631 15 58 40 56.8 1.0 -0.6 -170.4 -25 1094 No stop 23 15 30 =1654+866 16 00 10 56.8 0.9 -0.6 -170.9 65 1099 23 14 01 23 15 30 PSJ1721+8842 16 00 10 54.6 0.6 -1.1 -163.6 -25 1099 No stop 23 18 55 --- 16 03 36 54.6 0.6 -1.0 -164.5 180 1113 23 15 31 23 19 40 J1639+8631 16 04 21 56.8 0.8 -0.5 -172.0 20 1113 23 19 40 23 21 05 =1654+866 16 05 46 56.8 0.8 -0.5 -172.4 85 1118 23 19 41 23 21 05 PSJ1721+8842 16 05 46 54.6 0.6 -1.0 -165.1 -25 1118 No stop 23 24 30 --- 16 09 12 54.6 0.5 -0.9 -166.0 180 1131 23 21 06 23 24 30 J1639+8631 16 09 12 56.8 0.7 -0.4 -173.3 -25 1131 No stop 23 26 00 =1654+866 16 10 42 56.8 0.6 -0.4 -173.7 65 1137 23 24 31 Schedule for PICKMERE (Code Pi ) Page 10 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Fri 4 Jun 2021 Day 155 --- 23 26 00 PSJ1721+8842 16 10 42 54.6 0.5 -0.9 -166.3 -25 1137 No stop 23 29 25 --- 16 14 08 54.6 0.5 -0.8 -167.2 180 1150 23 26 01 23 30 10 J1639+8631 16 14 53 56.8 0.5 -0.3 -174.9 19 1150 23 30 10 23 31 35 =1654+866 16 16 18 56.8 0.5 -0.3 -175.3 85 1156 23 30 11 23 31 35 PSJ1721+8842 16 16 18 54.6 0.5 -0.8 -167.8 -25 1156 No stop 23 35 00 --- 16 19 44 54.6 0.4 -0.7 -168.7 180 1169 23 31 36 23 35 00 J1639+8631 16 19 44 56.8 0.4 -0.2 -176.2 -26 1169 No stop 23 36 30 =1654+866 16 21 14 56.8 0.3 -0.2 -176.6 64 1175 23 35 01 23 36 30 PSJ1721+8842 16 21 14 54.6 0.4 -0.7 -169.1 -25 1175 No stop 23 39 55 --- 16 24 39 54.6 0.4 -0.6 -169.9 180 1188 23 36 31 23 40 40 J1639+8631 16 25 25 56.8 0.2 -0.1 -177.7 20 1188 23 40 40 23 42 05 =1654+866 16 26 50 56.8 0.2 -0.1 -178.1 85 1194 23 40 41 23 42 05 PSJ1721+8842 16 26 50 54.6 0.4 -0.6 -170.5 -25 1194 No stop 23 45 30 --- 16 30 15 54.6 0.3 -0.6 -171.4 180 1207 23 42 06 23 45 30 J1639+8631 16 30 15 56.8 0.1 -0.1 -179.1 -25 1207 No stop 23 47 00 =1654+866 16 31 46 56.8 0.1 -0.0 -179.5 65 1213 23 45 31 23 47 00 PSJ1721+8842 16 31 46 54.6 0.3 -0.5 -171.8 -25 1213 No stop 23 50 25 --- 16 35 11 54.6 0.3 -0.5 -172.7 180 1226 23 47 01 23 51 10 J1639+8631 16 35 56 56.8 -0.1 0.0 179.4 20 1226 23 51 10 23 52 35 =1654+866 16 37 21 56.8 -0.1 0.1 179.0 85 1231 23 51 11 23 52 35 PSJ1721+8842 16 37 21 54.6 0.3 -0.4 -173.2 -25 1231 No stop 23 56 00 --- 16 40 47 54.6 0.2 -0.4 -174.1 180 1244 23 52 36 23 56 00 J1639+8631 16 40 47 56.8 -0.2 0.1 178.1 -25 1244 No stop 23 57 30 =1654+866 16 42 17 56.8 -0.2 0.1 177.7 65 1250 23 56 01 --- Sat 5 Jun 2021 Day 156 --- 00 02 30 3C454.3 16 47 18 11.8 78.6 -6.1 -37.6 41 1250 00 02 30 00 07 30 --- 16 52 19 12.6 79.6 -6.0 -37.8 300 1270 00 02 31 00 12 30 J1639+8631 16 57 20 56.8 -0.7 0.4 173.5 36 1270 00 12 30 00 17 30 =1654+866 17 02 21 56.8 -0.8 0.5 172.2 300 1289 00 12 31 Schedule for PICKMERE (Code Pi ) Page 11 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 00 17 30 PSJ1721+8842 17 02 21 54.6 0.0 -0.0 -179.7 -25 1289 No stop 00 20 55 --- 17 05 46 54.6 -0.0 0.0 179.5 180 1302 00 17 31 00 21 40 J1639+8631 17 06 31 56.8 -0.9 0.5 171.0 20 1302 00 21 40 00 23 05 =1654+866 17 07 56 56.8 -1.0 0.6 170.7 85 1308 00 21 41 00 23 05 PSJ1721+8842 17 07 56 54.6 -0.0 0.1 178.9 -25 1308 No stop 00 26 30 --- 17 11 22 54.6 -0.1 0.1 178.0 180 1321 00 23 06 00 26 30 J1639+8631 17 11 22 56.7 -1.0 0.6 169.7 -25 1321 No stop 00 28 00 =1654+866 17 12 52 56.7 -1.1 0.7 169.3 65 1327 00 26 31 00 28 00 PSJ1721+8842 17 12 52 54.6 -0.1 0.2 177.6 -25 1327 No stop 00 31 25 --- 17 16 18 54.6 -0.1 0.2 176.7 180 1340 00 28 01 00 32 10 J1639+8631 17 17 03 56.7 -1.2 0.7 168.2 20 1340 00 32 10 00 33 35 =1654+866 17 18 28 56.7 -1.2 0.7 167.8 85 1345 00 32 11 00 33 35 PSJ1721+8842 17 18 28 54.6 -0.1 0.2 176.2 -25 1345 No stop 00 37 00 --- 17 21 54 54.6 -0.2 0.3 175.3 180 1358 00 33 36 00 37 00 J1639+8631 17 21 54 56.7 -1.3 0.8 166.9 -25 1358 No stop 00 38 30 =1654+866 17 23 24 56.7 -1.4 0.8 166.4 65 1364 00 37 01 00 38 30 PSJ1721+8842 17 23 24 54.6 -0.2 0.3 174.9 -25 1364 No stop 00 41 55 --- 17 26 50 54.6 -0.2 0.4 174.0 180 1377 00 38 31 00 42 40 J1639+8631 17 27 35 56.7 -1.5 0.9 165.3 20 1377 00 42 40 00 44 05 =1654+866 17 29 00 56.7 -1.5 0.9 164.9 85 1383 00 42 41 00 44 05 PSJ1721+8842 17 29 00 54.6 -0.3 0.4 173.5 -25 1383 No stop 00 47 30 --- 17 32 25 54.6 -0.3 0.5 172.6 180 1396 00 44 06 00 47 30 J1639+8631 17 32 25 56.7 -1.6 1.0 164.0 -25 1396 No stop 00 49 00 =1654+866 17 33 56 56.7 -1.7 1.0 163.6 65 1402 00 47 31 00 49 00 PSJ1721+8842 17 33 56 54.6 -0.3 0.5 172.2 -25 1402 No stop 00 52 25 --- 17 37 21 54.6 -0.3 0.6 171.3 180 1415 00 49 01 00 53 10 J1639+8631 17 38 06 56.6 -1.8 1.1 162.4 20 1415 00 53 10 00 54 35 =1654+866 17 39 32 56.6 -1.8 1.1 162.1 85 1421 00 53 11 00 54 35 PSJ1721+8842 17 39 32 54.6 -0.4 0.6 170.7 -25 1421 No stop 00 58 00 --- 17 42 57 54.6 -0.4 0.7 169.9 180 1434 00 54 36 Schedule for PICKMERE (Code Pi ) Page 12 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 00 58 00 J1639+8631 17 42 57 56.6 -1.9 1.2 161.1 -25 1434 No stop 00 59 30 =1654+866 17 44 27 56.6 -1.9 1.2 160.7 65 1440 00 58 01 00 59 30 PSJ1721+8842 17 44 27 54.6 -0.4 0.7 169.5 -25 1440 No stop 01 02 55 --- 17 47 53 54.6 -0.4 0.7 168.6 180 1453 00 59 31 01 03 40 J1639+8631 17 48 38 56.6 -2.0 1.2 159.6 21 1453 01 03 40 01 05 05 =1654+866 17 50 03 56.6 -2.1 1.3 159.2 85 1458 01 03 41 01 05 05 PSJ1721+8842 17 50 03 54.6 -0.5 0.8 168.0 -24 1458 No stop 01 08 30 --- 17 53 29 54.6 -0.5 0.8 167.1 181 1471 01 05 06 01 08 30 J1639+8631 17 53 29 56.6 -2.2 1.3 158.3 -24 1471 No stop 01 10 00 =1654+866 17 54 59 56.6 -2.2 1.4 157.9 66 1477 01 08 31 01 10 00 PSJ1721+8842 17 54 59 54.6 -0.5 0.9 166.8 -24 1477 No stop 01 13 25 --- 17 58 25 54.6 -0.5 0.9 165.9 181 1490 01 10 01 01 14 10 J1639+8631 17 59 10 56.5 -2.3 1.4 156.7 21 1490 01 14 10 01 15 35 =1654+866 18 00 35 56.5 -2.4 1.4 156.3 85 1496 01 14 11 01 15 35 PSJ1721+8842 18 00 35 54.6 -0.6 0.9 165.3 -24 1496 No stop 01 19 00 --- 18 04 01 54.6 -0.6 1.0 164.4 181 1509 01 15 36 01 19 00 J1639+8631 18 04 01 56.5 -2.4 1.5 155.4 -24 1509 No stop 01 20 30 =1654+866 18 05 31 56.5 -2.5 1.5 155.0 66 1515 01 19 01 01 20 30 PSJ1721+8842 18 05 31 54.6 -0.6 1.0 164.0 -24 1515 No stop 01 23 55 --- 18 08 56 54.6 -0.6 1.1 163.2 181 1528 01 20 31 01 24 40 J1639+8631 18 09 42 56.5 -2.6 1.6 153.9 21 1528 01 24 40 01 26 05 =1654+866 18 11 07 56.5 -2.6 1.6 153.5 85 1534 01 24 41 01 26 05 PSJ1721+8842 18 11 07 54.5 -0.7 1.1 162.6 -24 1534 No stop 01 29 30 --- 18 14 32 54.5 -0.7 1.2 161.7 181 1547 01 26 06 01 29 30 J1639+8631 18 14 32 56.4 -2.7 1.7 152.6 -24 1547 No stop 01 31 00 =1654+866 18 16 03 56.4 -2.7 1.7 152.2 66 1553 01 29 31 01 31 00 PSJ1721+8842 18 16 03 54.5 -0.7 1.2 161.3 -25 1553 No stop 01 34 25 --- 18 19 28 54.5 -0.7 1.3 160.4 180 1566 01 31 01 01 35 10 J1639+8631 18 20 13 56.4 -2.8 1.8 151.0 20 1566 01 35 10 01 36 35 =1654+866 18 21 39 56.4 -2.9 1.8 150.7 85 1571 01 35 11 Schedule for PICKMERE (Code Pi ) Page 13 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 01 36 35 PSJ1721+8842 18 21 39 54.5 -0.8 1.3 159.9 -25 1571 No stop 01 40 00 --- 18 25 04 54.5 -0.8 1.4 159.0 180 1584 01 36 36 01 40 00 J1639+8631 18 25 04 56.4 -3.0 1.9 149.7 -25 1584 No stop 01 41 30 =1654+866 18 26 34 56.3 -3.0 1.9 149.3 65 1590 01 40 01 01 41 30 PSJ1721+8842 18 26 34 54.5 -0.8 1.4 158.6 -25 1590 No stop 01 44 55 --- 18 30 00 54.5 -0.8 1.4 157.7 180 1603 01 41 31 01 45 40 J1639+8631 18 30 45 56.3 -3.1 2.0 148.2 19 1603 01 45 40 01 47 05 =1654+866 18 32 10 56.3 -3.1 2.0 147.8 85 1609 01 45 41 01 47 05 PSJ1721+8842 18 32 10 54.5 -0.9 1.5 157.2 -26 1609 No stop 01 50 30 --- 18 35 36 54.5 -0.9 1.5 156.3 179 1622 01 47 06 01 50 30 J1639+8631 18 35 36 56.3 -3.2 2.0 146.9 -26 1622 No stop 01 52 00 =1654+866 18 37 06 56.3 -3.2 2.1 146.5 64 1628 01 50 31 01 52 00 PSJ1721+8842 18 37 06 54.5 -0.9 1.6 155.9 -26 1628 No stop 01 55 25 --- 18 40 32 54.5 -0.9 1.6 155.0 179 1641 01 52 01 01 56 10 J1639+8631 18 41 17 56.2 -3.3 2.1 145.4 19 1641 01 56 10 01 57 35 =1654+866 18 42 42 56.2 -3.4 2.2 145.0 85 1647 01 56 11 01 57 35 PSJ1721+8842 18 42 42 54.5 -1.0 1.7 154.5 -27 1647 No stop 02 01 00 --- 18 46 08 54.5 -1.0 1.7 153.6 178 1660 01 57 36 02 01 00 J1639+8631 18 46 08 56.2 -3.4 2.2 144.1 -27 1660 No stop 02 02 30 =1654+866 18 47 38 56.2 -3.5 2.2 143.7 63 1666 02 01 01 02 02 30 PSJ1721+8842 18 47 38 54.5 -1.0 1.7 153.2 -27 1666 No stop 02 05 55 --- 18 51 03 54.5 -1.0 1.8 152.3 178 1679 02 02 31 02 06 40 J1639+8631 18 51 49 56.1 -3.6 2.3 142.6 18 1679 02 06 40 02 08 05 =1654+866 18 53 14 56.1 -3.6 2.3 142.2 85 1684 02 06 41 02 08 05 PSJ1721+8842 18 53 14 54.5 -1.0 1.8 151.8 -27 1684 No stop 02 11 30 --- 18 56 39 54.4 -1.1 1.9 150.9 178 1698 02 08 06 02 11 30 J1639+8631 18 56 39 56.1 -3.7 2.4 141.3 -28 1698 No stop 02 13 00 =1654+866 18 58 10 56.1 -3.7 2.4 140.9 62 1703 02 11 31 02 13 00 PSJ1721+8842 18 58 10 54.4 -1.1 1.9 150.5 -28 1703 No stop 02 16 25 --- 19 01 35 54.4 -1.1 2.0 149.6 177 1717 02 13 01 Schedule for PICKMERE (Code Pi ) Page 14 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 02 17 10 J1639+8631 19 02 20 56.0 -3.8 2.5 139.7 17 1717 02 17 10 02 18 35 =1654+866 19 03 45 56.0 -3.8 2.5 139.4 85 1722 02 17 11 02 18 35 PSJ1721+8842 19 03 45 54.4 -1.1 2.0 149.1 -28 1722 No stop 02 22 00 --- 19 07 11 54.4 -1.2 2.1 148.2 177 1735 02 18 36 02 22 00 J1639+8631 19 07 11 56.0 -3.9 2.6 138.4 -28 1735 No stop 02 23 30 =1654+866 19 08 41 56.0 -3.9 2.6 138.0 62 1741 02 22 01 02 23 30 PSJ1721+8842 19 08 41 54.4 -1.2 2.1 147.8 -28 1741 No stop 02 26 55 --- 19 12 07 54.4 -1.2 2.1 146.9 177 1754 02 23 31 02 27 40 J1639+8631 19 12 52 55.9 -4.0 2.7 136.9 17 1754 02 27 40 02 29 05 =1654+866 19 14 17 55.9 -4.0 2.7 136.6 85 1760 02 27 41 02 29 05 PSJ1721+8842 19 14 17 54.4 -1.2 2.2 146.4 -29 1760 No stop 02 32 30 --- 19 17 43 54.4 -1.3 2.2 145.5 176 1773 02 29 06 02 32 30 J1639+8631 19 17 43 55.9 -4.1 2.7 135.6 -29 1773 No stop 02 34 00 =1654+866 19 19 13 55.9 -4.1 2.8 135.2 61 1779 02 32 31 02 34 00 PSJ1721+8842 19 19 13 54.4 -1.3 2.3 145.1 -29 1779 No stop 02 37 25 --- 19 22 39 54.4 -1.3 2.3 144.2 176 1792 02 34 01 02 38 10 J1639+8631 19 23 24 55.8 -4.2 2.8 134.1 16 1792 02 38 10 02 39 35 =1654+866 19 24 49 55.8 -4.2 2.9 133.8 85 1797 02 38 11 02 39 35 PSJ1721+8842 19 24 49 54.4 -1.3 2.4 143.7 -29 1797 No stop 02 43 00 --- 19 28 14 54.3 -1.3 2.4 142.8 176 1811 02 39 36 02 43 00 J1639+8631 19 28 14 55.8 -4.3 2.9 132.9 -29 1811 No stop 02 44 30 =1654+866 19 29 45 55.7 -4.3 2.9 132.5 61 1816 02 43 01 02 44 30 PSJ1721+8842 19 29 45 54.3 -1.3 2.4 142.4 -29 1816 No stop 02 47 55 --- 19 33 10 54.3 -1.4 2.5 141.5 176 1830 02 44 31 02 48 40 J1639+8631 19 33 55 55.7 -4.4 3.0 131.3 15 1830 02 48 40 02 50 05 =1654+866 19 35 21 55.7 -4.4 3.0 131.0 85 1835 02 48 41 02 50 05 PSJ1721+8842 19 35 21 54.3 -1.4 2.5 141.0 -30 1835 No stop 02 53 30 --- 19 38 46 54.3 -1.4 2.6 140.1 175 1848 02 50 06 02 53 30 J1639+8631 19 38 46 55.6 -4.5 3.1 130.1 -30 1848 No stop 02 55 00 =1654+866 19 40 16 55.6 -4.5 3.1 129.7 60 1854 02 53 31 Schedule for PICKMERE (Code Pi ) Page 15 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 02 55 00 PSJ1721+8842 19 40 16 54.3 -1.4 2.6 139.7 -30 1854 No stop 02 58 25 --- 19 43 42 54.3 -1.5 2.7 138.8 175 1867 02 55 01 02 59 10 J1639+8631 19 44 27 55.6 -4.6 3.2 128.6 15 1867 02 59 10 03 00 35 =1654+866 19 45 52 55.6 -4.6 3.2 128.2 85 1873 02 59 11 03 00 35 PSJ1721+8842 19 45 52 54.3 -1.5 2.7 138.3 -30 1873 No stop 03 04 00 --- 19 49 18 54.3 -1.5 2.8 137.4 175 1886 03 00 36 03 04 00 J1639+8631 19 49 18 55.5 -4.7 3.3 127.3 -30 1886 No stop 03 05 30 =1654+866 19 50 48 55.5 -4.7 3.3 126.9 60 1892 03 04 01 03 05 30 PSJ1721+8842 19 50 48 54.3 -1.5 2.8 137.0 -30 1892 No stop 03 08 55 --- 19 54 14 54.2 -1.5 2.8 136.1 175 1905 03 05 31 03 09 40 J1639+8631 19 54 59 55.4 -4.8 3.4 125.8 15 1905 03 09 40 03 11 05 =1654+866 19 56 24 55.4 -4.8 3.4 125.4 85 1910 03 09 41 03 11 05 PSJ1721+8842 19 56 24 54.2 -1.5 2.9 135.6 -30 1910 No stop 03 14 30 --- 19 59 50 54.2 -1.6 2.9 134.7 175 1924 03 11 06 03 14 30 J1639+8631 19 59 50 55.4 -4.8 3.4 124.5 -31 1924 No stop 03 16 00 =1654+866 20 01 20 55.4 -4.9 3.5 124.1 59 1929 03 14 31 03 16 00 PSJ1721+8842 20 01 20 54.2 -1.6 3.0 134.3 -31 1929 No stop 03 19 25 --- 20 04 45 54.2 -1.6 3.0 133.4 174 1943 03 16 01 03 20 10 J1639+8631 20 05 31 55.3 -4.9 3.5 123.0 14 1943 03 20 10 03 21 35 =1654+866 20 06 56 55.3 -4.9 3.6 122.7 85 1948 03 20 11 03 21 35 PSJ1721+8842 20 06 56 54.2 -1.6 3.1 132.9 -31 1948 No stop 03 25 00 --- 20 10 21 54.2 -1.6 3.1 132.0 174 1961 03 21 36 03 25 00 J1639+8631 20 10 21 55.2 -5.0 3.6 121.8 -31 1961 No stop 03 26 30 =1654+866 20 11 52 55.2 -5.0 3.6 121.4 59 1967 03 25 01 03 26 30 PSJ1721+8842 20 11 52 54.2 -1.6 3.1 131.6 -31 1967 No stop 03 29 55 --- 20 15 17 54.2 -1.7 3.2 130.7 174 1980 03 26 31 03 30 40 J1639+8631 20 16 02 55.2 -5.1 3.7 120.3 14 1980 03 30 40 03 32 05 =1654+866 20 17 28 55.2 -5.1 3.7 119.9 85 1986 03 30 41 03 32 05 PSJ1721+8842 20 17 28 54.2 -1.7 3.2 130.2 -31 1986 No stop 03 35 30 --- 20 20 53 54.1 -1.7 3.3 129.3 174 1999 03 32 06 Schedule for PICKMERE (Code Pi ) Page 16 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 03 35 30 J1639+8631 20 20 53 55.1 -5.1 3.8 119.0 -31 1999 No stop 03 37 00 =1654+866 20 22 23 55.1 -5.2 3.8 118.6 59 2005 03 35 31 03 37 00 PSJ1721+8842 20 22 23 54.1 -1.7 3.3 128.9 -31 2005 No stop 03 40 25 --- 20 25 49 54.1 -1.7 3.4 128.1 174 2018 03 37 01 03 41 10 J1639+8631 20 26 34 55.0 -5.2 3.9 117.6 14 2018 03 41 10 03 42 35 =1654+866 20 27 59 55.0 -5.2 3.9 117.2 85 2023 03 41 11 03 42 35 PSJ1721+8842 20 27 59 54.1 -1.8 3.4 127.5 -31 2023 No stop 03 46 00 --- 20 31 25 54.1 -1.8 3.5 126.6 174 2037 03 42 36 03 46 00 J1639+8631 20 31 25 55.0 -5.3 4.0 116.3 -32 2037 No stop 03 47 30 =1654+866 20 32 55 54.9 -5.3 4.0 115.9 58 2042 03 46 01 03 47 30 PSJ1721+8842 20 32 55 54.1 -1.8 3.5 126.3 -32 2042 No stop 03 50 55 --- 20 36 21 54.1 -1.8 3.5 125.4 173 2056 03 47 31 03 51 40 J1639+8631 20 37 06 54.9 -5.3 4.1 114.8 13 2056 03 51 40 03 53 05 =1654+866 20 38 31 54.9 -5.4 4.1 114.5 85 2061 03 51 41 03 53 05 PSJ1721+8842 20 38 31 54.1 -1.8 3.6 124.8 -32 2061 No stop 03 56 30 --- 20 41 57 54.0 -1.8 3.6 124.0 173 2074 03 53 06 03 56 30 J1639+8631 20 41 57 54.8 -5.4 4.1 113.6 -32 2074 No stop 03 58 00 =1654+866 20 43 27 54.8 -5.4 4.2 113.2 58 2080 03 56 31 03 58 00 PSJ1721+8842 20 43 27 54.0 -1.8 3.7 123.6 -32 2080 No stop 04 01 25 --- 20 46 52 54.0 -1.9 3.7 122.7 173 2093 03 58 01 04 02 10 J1639+8631 20 47 37 54.7 -5.4 4.2 112.1 13 2093 04 02 10 04 03 35 =1654+866 20 49 03 54.7 -5.5 4.3 111.7 85 2099 04 02 11 04 03 35 PSJ1721+8842 20 49 03 54.0 -1.9 3.8 122.1 -32 2099 No stop 04 07 00 --- 20 52 28 54.0 -1.9 3.8 121.3 173 2112 04 03 36 04 07 00 J1639+8631 20 52 28 54.7 -5.5 4.3 110.9 -32 2112 No stop 04 08 30 =1654+866 20 53 59 54.6 -5.5 4.3 110.5 58 2118 04 07 01 04 13 30 3C84 20 58 59 29.3 58.6 -6.4 -43.0 86 2118 04 13 30 04 18 30 --- 21 04 00 29.9 59.4 -6.3 -43.4 300 2137 04 13 31 04 23 30 J1639+8631 21 09 01 54.4 -5.6 4.6 106.6 82 2137 04 23 30 04 28 30 =1654+866 21 14 02 54.4 -5.7 4.7 105.3 300 2156 04 23 31 Schedule for PICKMERE (Code Pi ) Page 17 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 04 28 30 PSJ1721+8842 21 14 02 53.9 -2.0 4.2 115.8 -32 2156 No stop 04 31 55 --- 21 17 27 53.9 -2.0 4.2 114.9 173 2170 04 28 31 04 32 40 J1639+8631 21 18 12 54.3 -5.7 4.7 104.3 13 2170 04 32 40 04 34 05 =1654+866 21 19 38 54.3 -5.7 4.8 103.9 85 2175 04 32 41 04 34 05 PSJ1721+8842 21 19 38 53.9 -2.0 4.3 114.4 -32 2175 No stop 04 37 30 --- 21 23 03 53.8 -2.0 4.3 113.5 173 2188 04 34 06 04 37 30 J1639+8631 21 23 03 54.2 -5.7 4.8 103.0 -32 2188 No stop 04 39 00 =1654+866 21 24 34 54.2 -5.7 4.8 102.7 58 2194 04 37 31 04 39 00 PSJ1721+8842 21 24 34 53.8 -2.0 4.3 113.1 -32 2194 No stop 04 42 25 --- 21 27 59 53.8 -2.0 4.4 112.3 173 2207 04 39 01 04 43 10 J1639+8631 21 28 44 54.1 -5.8 4.9 101.6 13 2207 04 43 10 04 44 35 =1654+866 21 30 09 54.1 -5.8 4.9 101.2 85 2213 04 43 11 04 44 35 PSJ1721+8842 21 30 09 53.8 -2.1 4.4 111.7 -32 2213 No stop 04 48 00 --- 21 33 35 53.8 -2.1 4.5 110.9 173 2226 04 44 36 04 48 00 J1639+8631 21 33 35 54.1 -5.8 5.0 100.4 -33 2226 No stop 04 49 30 =1654+866 21 35 05 54.0 -5.8 5.0 100.0 57 2232 04 48 01 04 49 30 PSJ1721+8842 21 35 05 53.8 -2.1 4.5 110.5 -32 2232 No stop 04 52 55 --- 21 38 31 53.7 -2.1 4.6 109.6 173 2245 04 49 31 04 53 40 J1639+8631 21 39 16 54.0 -5.8 5.1 98.9 12 2245 04 53 40 04 55 05 =1654+866 21 40 41 54.0 -5.8 5.1 98.6 85 2250 04 53 41 04 55 05 PSJ1721+8842 21 40 41 53.7 -2.1 4.6 109.1 -33 2250 No stop 04 58 30 --- 21 44 07 53.7 -2.1 4.7 108.2 172 2264 04 55 06 04 58 30 J1639+8631 21 44 07 53.9 -5.8 5.2 97.7 -33 2264 No stop 05 00 00 =1654+866 21 45 37 53.9 -5.8 5.2 97.3 57 2269 04 58 31 05 00 00 PSJ1721+8842 21 45 37 53.7 -2.1 4.7 107.8 -33 2269 No stop 05 03 25 --- 21 49 03 53.7 -2.1 4.8 107.0 172 2283 05 00 01 05 04 10 J1639+8631 21 49 48 53.8 -5.8 5.3 96.3 12 2283 05 04 10 05 05 35 =1654+866 21 51 13 53.8 -5.8 5.3 95.9 85 2288 05 04 11 05 05 35 PSJ1721+8842 21 51 13 53.7 -2.1 4.8 106.4 -33 2288 No stop 05 09 00 --- 21 54 38 53.7 -2.1 4.8 105.5 172 2301 05 05 36 Schedule for PICKMERE (Code Pi ) Page 18 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 05 09 00 J1639+8631 21 54 38 53.7 -5.9 5.3 95.1 -33 2301 No stop 05 10 30 =1654+866 21 56 09 53.7 -5.9 5.4 94.7 57 2307 05 09 01 05 10 30 PSJ1721+8842 21 56 09 53.7 -2.1 4.9 105.2 -33 2307 No stop 05 13 55 --- 21 59 34 53.6 -2.1 4.9 104.3 172 2320 05 10 31 05 14 40 J1639+8631 22 00 19 53.7 -5.9 5.4 93.6 12 2320 05 14 40 05 16 05 =1654+866 22 01 45 53.6 -5.9 5.5 93.3 85 2326 05 14 41 05 16 05 PSJ1721+8842 22 01 45 53.6 -2.1 5.0 103.8 -33 2326 No stop 05 19 30 --- 22 05 10 53.6 -2.2 5.0 102.9 172 2339 05 16 06 05 19 30 J1639+8631 22 05 10 53.6 -5.9 5.5 92.4 -33 2339 No stop 05 21 00 =1654+866 22 06 40 53.6 -5.9 5.5 92.0 57 2345 05 19 31 05 21 00 PSJ1721+8842 22 06 40 53.6 -2.2 5.1 102.5 -32 2345 No stop 05 24 25 --- 22 10 06 53.6 -2.2 5.1 101.7 173 2358 05 21 01 05 25 10 J1639+8631 22 10 51 53.5 -5.9 5.6 91.0 13 2358 05 25 10 05 26 35 =1654+866 22 12 16 53.5 -5.9 5.6 90.6 85 2364 05 25 11 05 26 35 PSJ1721+8842 22 12 16 53.6 -2.2 5.1 101.1 -32 2364 No stop 05 30 00 --- 22 15 42 53.5 -2.2 5.2 100.2 173 2377 05 26 36 05 30 00 J1639+8631 22 15 42 53.4 -5.9 5.7 89.8 -32 2377 No stop 05 31 30 =1654+866 22 17 12 53.4 -5.9 5.7 89.4 58 2383 05 30 01 05 31 30 PSJ1721+8842 22 17 12 53.5 -2.2 5.2 99.9 -32 2383 No stop 05 34 55 --- 22 20 38 53.5 -2.2 5.3 99.0 173 2396 05 31 31 05 35 40 J1639+8631 22 21 23 53.3 -5.9 5.8 88.4 13 2396 05 35 40 05 37 05 =1654+866 22 22 48 53.3 -5.9 5.8 88.0 85 2401 05 35 41 05 37 05 PSJ1721+8842 22 22 48 53.5 -2.2 5.3 98.5 -32 2401 No stop 05 40 30 --- 22 26 14 53.5 -2.2 5.4 97.6 173 2414 05 37 06 05 40 30 J1639+8631 22 26 14 53.3 -5.9 5.9 87.2 -32 2414 No stop 05 42 00 =1654+866 22 27 44 53.2 -5.9 5.9 86.8 58 2420 05 40 31 05 42 00 PSJ1721+8842 22 27 44 53.5 -2.2 5.4 97.2 -32 2420 No stop 05 45 25 --- 22 31 09 53.5 -2.2 5.5 96.4 173 2433 05 42 01 05 46 10 J1639+8631 22 31 55 53.2 -5.9 6.0 85.7 13 2433 05 46 10 05 47 35 =1654+866 22 33 20 53.2 -5.9 6.0 85.4 85 2439 05 46 11 Schedule for PICKMERE (Code Pi ) Page 19 Resolving a gravitationally lensed dual back-hole system at z = 2.37 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Sat 5 Jun 2021 Day 156 --- 05 47 35 PSJ1721+8842 22 33 20 53.4 -2.2 5.5 95.8 -32 2439 No stop 05 51 00 --- 22 36 45 53.4 -2.2 5.6 95.0 173 2452 05 47 36 05 51 00 J1639+8631 22 36 45 53.1 -5.9 6.1 84.5 -32 2452 No stop 05 52 30 =1654+866 22 38 16 53.1 -5.8 6.1 84.2 58 2458 05 51 01 05 52 30 PSJ1721+8842 22 38 16 53.4 -2.2 5.6 94.6 -32 2458 No stop 05 55 55 --- 22 41 41 53.4 -2.2 5.6 93.7 173 2471 05 52 31 05 56 35 J1639+8631 22 42 21 53.0 -5.8 6.1 83.2 8 2471 05 56 35 05 58 00 =1654+866 22 43 47 53.0 -5.8 6.2 82.8 85 2477 05 56 36 05 58 00 PSJ1721+8842 22 43 47 53.4 -2.2 5.7 93.2 -32 2477 No stop 06 00 00 --- 22 45 47 53.4 -2.2 5.7 92.7 88 2484 05 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess221.L1024 --- 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: 17 Station: PICKMERE Total bit rate: 512 Format: VDIF Bits per sample: 2 Sample rate:128.000 Number of channels: 2 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2272.00 2272.00 Net SB= U U IF SB = L L Pol. = RCP LCP BBC = 1 9 BBC SB= L L IF = A1 B1 The following frequency sets based on these setups were used. Frequency Set: 14 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 BBC fr= 645.51 645.51 Bandwd= 64.00 64.00 Matching frequency sets: 14 15 16 17 18 Track assignments are: track1= 1, 2 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * PSJ1721+8842 18 08 47.084813 * 17 21 43.936000 17 03 39.358204 0.00 88 43 26.13207 * 88 42 21.42800 88 40 50.86305 0.00 From catalog imbedded in main SCHED input file. * 3C84 03 16 29.567265 * 03 19 48.160096 03 21 10.455581 1.50 J0319+4130 41 19 51.91692 * 41 30 42.10404 41 35 07.95163 2.86 0316+413 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0319+41 GSFC 2016a X/S astro solution, 10291 observations. 1654+866 16 54 31.289232 * 16 39 25.014806 16 33 40.945152 10.77 * J1639+8631 86 37 07.15444 * 86 31 53.13177 86 29 21.91471 0.62 J1639+86 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 43 observations. * 3C345 16 41 17.606229 * 16 42 58.809967 16 43 43.280984 0.79 J1642+3948 39 54 10.81492 * 39 48 36.99399 39 46 14.84933 0.59 1641+399 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. * 3C454.3 22 51 29.519739 * 22 53 57.747939 22 55 00.276064 0.65 J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 30.58628 0.73 2251+158 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 observations. SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline PSJ1721+884sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 7.151 951.186 3C84 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 11.593 J1639+8631 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 3.313 413.872 3C345 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 12.750 3C454.3 sess221.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.083 11.639 EFFECT OF SOLAR CORONA The solar corona can cause unstable phases for sources too close to the Sun. SCHED provides warnings at individual scans for distances less than 10 degrees. The distance from the Sun to each source in this schedule is: Source Sun distance (deg) PSJ1721+8842 68.8 3C84 27.1 J1639+8631 71.0 3C345 117.6 3C454.3 83.4 Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes that the Sun will cause amplitude reductions on the longest VLBA baselines at a solar distance of 60deg F^(-0.6) where F is in GHz. For common VLBI bands, this is: 327 MHz 117. deg 610 MHz 81. deg 1.6 GHz 45. deg 2.3 GHz 36. deg 5.0 GHz 23. deg 8.4 GHz 17. deg 15.0 GHz 12. deg 22.0 GHz 9. deg 43.0 GHz 6. deg