COVER INFORMATION Station: JB2_MERL (Code Jm ) Experiment: OH gas in Megamaser Galaxies: imaging the diffuse and compact emission Exp. Code: EL074 Schedule Version: 1.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Dalei Li Address: Xinjiang Astronomical Observatory, Chinese Academy of Sciences 150, Science 1-Street Urumqi, Xinjiang China PR Phone: +8615199077491 EMAIL: lidalei@xao.ac.cn Fax: Phone during observation: +8615199077491 Observing mode: vlbi Notes: # Please, make sure PHASE CAL is OFF # Wb: total span=169MHz, LO set to begin 160MHz IF at 1554 and drop upper 9.72MHz Ef/Hh will miss most/all (repsectively) of the lowest sub-band Schedule for JB2_MERL (Code Jm ) Page 2 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- Next scan frequencies: 1587.22 1587.22 Next BBC frequencies: 684.78 684.78 Next scan bandwidths: 64.00 64.00 02 10 00 3C345 12 37 21 47.0 82.4 -4.1 -50.5 0 0 02 10 00 02 14 00 --- 12 41 22 47.6 83.1 -4.0 -50.6 240 15 02 10 01 02 17 00 3C286 12 44 22 65.5 154.4 -0.8 -17.5 -58 15 02 17 00 02 22 00 --- 12 49 23 65.8 156.9 -0.7 -15.8 242 35 02 17 01 02 28 00 J1642-0621 12 55 24 13.6 121.0 -3.8 -31.1 185 35 02 28 00 02 30 00 --- 12 57 24 13.8 121.4 -3.8 -30.9 120 43 02 28 01 02 30 00 IRAS16399 12 57 24 10.9 123.0 -3.8 -30.6 -25 43 No stop 02 33 30 --- 13 00 55 11.3 123.8 -3.7 -30.3 185 56 02 30 01 02 34 00 J1642-0621 13 01 25 14.3 122.3 -3.7 -30.6 5 56 02 34 00 02 35 30 --- 13 02 55 14.5 122.6 -3.7 -30.5 90 62 02 34 01 02 35 30 IRAS16399 13 02 55 11.5 124.2 -3.7 -30.1 -25 62 No stop 02 39 00 --- 13 06 26 12.0 125.0 -3.6 -29.8 185 75 02 35 31 02 39 30 J1642-0621 13 06 56 15.0 123.5 -3.6 -30.1 4 75 02 39 30 02 41 00 --- 13 08 26 15.2 123.9 -3.6 -30.0 90 81 02 39 31 02 41 00 IRAS16399 13 08 26 12.2 125.4 -3.6 -29.7 -25 81 No stop 02 44 30 --- 13 11 57 12.6 126.2 -3.5 -29.3 185 95 02 41 01 02 45 00 J1642-0621 13 12 27 15.7 124.8 -3.5 -29.7 4 95 02 45 00 02 46 30 --- 13 13 57 15.9 125.1 -3.5 -29.5 90 100 02 45 01 02 46 30 IRAS16399 13 13 57 12.9 126.7 -3.5 -29.2 -25 100 No stop 02 50 00 --- 13 17 28 13.3 127.4 -3.4 -28.8 185 114 02 46 31 02 50 30 J1642-0621 13 17 58 16.4 126.0 -3.4 -29.2 4 114 02 50 30 02 52 00 --- 13 19 28 16.6 126.3 -3.4 -29.0 90 120 02 50 31 02 52 00 IRAS16399 13 19 28 13.5 127.9 -3.4 -28.6 -25 120 No stop 02 55 30 --- 13 22 59 14.0 128.7 -3.4 -28.3 185 133 02 52 01 02 56 00 J1642-0621 13 23 29 17.0 127.3 -3.3 -28.6 4 133 02 56 00 02 57 30 --- 13 24 59 17.2 127.6 -3.3 -28.5 90 139 02 56 01 02 57 30 IRAS16399 13 24 59 14.2 129.1 -3.3 -28.1 -25 139 No stop 03 01 00 --- 13 28 29 14.6 129.9 -3.3 -27.8 185 153 02 57 31 Schedule for JB2_MERL (Code Jm ) Page 3 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 03 01 30 J1642-0621 13 29 00 17.7 128.5 -3.2 -28.1 4 153 03 01 30 03 03 00 --- 13 30 30 17.9 128.9 -3.2 -28.0 90 158 03 01 31 03 03 00 IRAS16399 13 30 30 14.8 130.3 -3.2 -27.6 -25 158 No stop 03 06 30 --- 13 34 00 15.2 131.1 -3.2 -27.2 185 172 03 03 01 03 07 00 J1642-0621 13 34 30 18.3 129.8 -3.1 -27.6 4 172 03 07 00 03 08 30 --- 13 36 01 18.5 130.1 -3.1 -27.4 90 178 03 07 01 03 08 30 IRAS16399 13 36 01 15.4 131.6 -3.1 -27.0 -25 178 No stop 03 12 00 --- 13 39 31 15.8 132.4 -3.1 -26.6 185 191 03 08 31 03 12 30 J1642-0621 13 40 01 19.0 131.1 -3.1 -27.0 4 191 03 12 30 03 14 00 --- 13 41 32 19.1 131.4 -3.0 -26.8 90 197 03 12 31 03 14 00 IRAS16399 13 41 32 16.1 132.9 -3.0 -26.4 -25 197 No stop 03 17 30 --- 13 45 02 16.4 133.7 -3.0 -26.1 185 211 03 14 01 03 18 00 J1642-0621 13 45 32 19.6 132.4 -3.0 -26.4 4 211 03 18 00 03 19 30 --- 13 47 02 19.7 132.7 -2.9 -26.3 90 216 03 18 01 03 19 30 IRAS16399 13 47 02 16.7 134.1 -3.0 -25.8 -26 216 No stop 03 23 00 --- 13 50 33 17.0 134.9 -2.9 -25.5 184 230 03 19 31 03 23 30 J1642-0621 13 51 03 20.2 133.7 -2.9 -25.8 4 230 03 23 30 03 25 00 --- 13 52 33 20.3 134.0 -2.8 -25.7 90 236 03 23 31 03 28 00 3C345 13 55 34 58.6 98.2 -2.8 -50.4 48 236 03 28 00 03 32 00 --- 13 59 35 59.2 99.2 -2.7 -50.2 240 251 03 28 01 03 36 00 3C286 14 03 35 66.4 197.1 0.5 11.8 -78 251 03 36 00 03 41 00 --- 14 08 36 66.2 199.7 0.6 13.5 222 271 03 36 01 03 46 00 J1642-0621 14 13 37 22.5 139.2 -2.5 -23.2 94 271 03 46 00 03 48 00 --- 14 15 37 22.7 139.7 -2.5 -23.0 120 278 03 46 01 03 48 00 IRAS16399 14 15 37 19.5 140.9 -2.5 -22.5 -26 278 No stop 03 51 30 --- 14 19 08 19.9 141.7 -2.4 -22.1 184 292 03 48 01 03 52 00 J1642-0621 14 19 38 23.1 140.7 -2.4 -22.5 4 292 03 52 00 03 53 30 --- 14 21 08 23.2 141.0 -2.4 -22.3 90 298 03 52 01 03 53 30 IRAS16399 14 21 08 20.1 142.2 -2.4 -21.8 -26 298 No stop 03 57 00 --- 14 24 39 20.4 143.1 -2.3 -21.4 184 311 03 53 31 Schedule for JB2_MERL (Code Jm ) Page 4 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 03 57 30 J1642-0621 14 25 09 23.6 142.0 -2.3 -21.7 4 311 03 57 30 03 59 00 --- 14 26 39 23.7 142.4 -2.3 -21.6 90 317 03 57 31 03 59 00 IRAS16399 14 26 39 20.6 143.6 -2.3 -21.1 -26 317 No stop 04 02 30 --- 14 30 10 20.9 144.4 -2.2 -20.7 184 330 03 59 01 04 03 00 J1642-0621 14 30 40 24.1 143.4 -2.2 -21.0 4 330 04 03 00 04 04 30 --- 14 32 10 24.2 143.8 -2.2 -20.8 90 336 04 03 01 04 04 30 IRAS16399 14 32 10 21.0 144.9 -2.2 -20.4 -26 336 No stop 04 08 00 --- 14 35 40 21.3 145.8 -2.1 -20.0 184 350 04 04 31 04 08 30 J1642-0621 14 36 11 24.6 144.8 -2.1 -20.3 4 350 04 08 30 04 10 00 --- 14 37 41 24.7 145.2 -2.1 -20.1 90 356 04 08 31 04 10 00 IRAS16399 14 37 41 21.5 146.3 -2.1 -19.7 -26 356 No stop 04 13 30 --- 14 41 11 21.8 147.2 -2.0 -19.2 184 369 04 10 01 04 14 00 J1642-0621 14 41 41 25.1 146.3 -2.0 -19.5 4 369 04 14 00 04 15 30 --- 14 43 12 25.2 146.6 -2.0 -19.3 90 375 04 14 01 04 15 30 IRAS16399 14 43 12 22.0 147.7 -2.0 -19.0 -26 375 No stop 04 19 00 --- 14 46 42 22.2 148.6 -2.0 -18.5 184 388 04 15 31 04 19 30 J1642-0621 14 47 12 25.5 147.7 -1.9 -18.8 4 388 04 19 30 04 21 00 --- 14 48 43 25.6 148.1 -1.9 -18.6 90 394 04 19 31 04 21 00 IRAS16399 14 48 43 22.4 149.1 -1.9 -18.2 -26 394 No stop 04 24 30 --- 14 52 13 22.6 150.0 -1.9 -17.7 184 408 04 21 01 04 25 00 J1642-0621 14 52 43 25.9 149.1 -1.8 -18.0 4 408 04 25 00 04 26 30 --- 14 54 14 26.1 149.5 -1.8 -17.8 90 414 04 25 01 04 26 30 IRAS16399 14 54 14 22.8 150.5 -1.8 -17.4 -26 414 No stop 04 30 00 --- 14 57 44 23.1 151.4 -1.8 -16.9 184 427 04 26 31 04 30 30 J1642-0621 14 58 14 26.4 150.6 -1.8 -17.2 4 427 04 30 30 04 32 00 --- 14 59 44 26.5 151.0 -1.7 -17.0 90 433 04 30 31 04 32 00 IRAS16399 14 59 44 23.2 151.9 -1.7 -16.6 -26 433 No stop 04 35 30 --- 15 03 15 23.4 152.8 -1.7 -16.1 184 446 04 32 01 04 36 00 J1642-0621 15 03 45 26.7 152.1 -1.7 -16.4 3 446 04 36 00 04 37 30 --- 15 05 15 26.9 152.5 -1.6 -16.2 90 452 04 36 01 Schedule for JB2_MERL (Code Jm ) Page 5 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 04 37 30 IRAS16399 15 05 15 23.6 153.3 -1.6 -15.8 -26 452 No stop 04 41 00 --- 15 08 46 23.8 154.2 -1.6 -15.3 184 466 04 37 31 04 41 30 J1642-0621 15 09 16 27.1 153.5 -1.6 -15.6 3 466 04 41 30 04 43 00 --- 15 10 46 27.2 153.9 -1.5 -15.3 90 471 04 41 31 04 43 00 IRAS16399 15 10 46 23.9 154.7 -1.6 -15.0 -26 471 No stop 04 46 30 --- 15 14 17 24.2 155.6 -1.5 -14.5 184 485 04 43 01 04 47 00 J1642-0621 15 14 47 27.5 155.0 -1.5 -14.7 3 485 04 47 00 04 48 30 --- 15 16 17 27.6 155.4 -1.5 -14.5 90 491 04 47 01 04 48 30 IRAS16399 15 16 17 24.3 156.2 -1.5 -14.2 -26 491 No stop 04 52 00 --- 15 19 48 24.5 157.1 -1.4 -13.7 184 504 04 48 31 04 52 30 J1642-0621 15 20 18 27.8 156.5 -1.4 -13.9 3 504 04 52 30 04 54 00 --- 15 21 48 27.9 156.9 -1.4 -13.7 90 510 04 52 31 04 54 00 IRAS16399 15 21 48 24.6 157.6 -1.4 -13.4 -26 510 No stop 04 57 30 --- 15 25 19 24.8 158.6 -1.3 -12.8 184 524 04 54 01 04 58 00 J1642-0621 15 25 49 28.1 158.0 -1.3 -13.0 3 524 04 58 00 04 59 30 --- 15 27 19 28.2 158.4 -1.3 -12.8 90 529 04 58 01 04 59 30 IRAS16399 15 27 19 24.9 159.1 -1.3 -12.5 -26 529 No stop 05 03 00 --- 15 30 50 25.1 160.0 -1.2 -12.0 184 543 04 59 31 05 03 30 J1642-0621 15 31 20 28.4 159.5 -1.2 -12.2 3 543 05 03 30 05 05 00 --- 15 32 50 28.5 160.0 -1.2 -11.9 90 549 05 03 31 05 05 00 IRAS16399 15 32 50 25.2 160.5 -1.2 -11.7 -27 549 No stop 05 08 30 --- 15 36 20 25.4 161.5 -1.1 -11.1 183 562 05 05 01 05 09 00 J1642-0621 15 36 50 28.7 161.1 -1.1 -11.3 3 562 05 09 00 05 10 30 --- 15 38 21 28.8 161.5 -1.1 -11.0 90 568 05 09 01 05 10 30 IRAS16399 15 38 21 25.5 162.0 -1.1 -10.8 -27 568 No stop 05 14 00 --- 15 41 51 25.6 163.0 -1.0 -10.2 183 582 05 10 31 05 14 30 J1642-0621 15 42 21 29.0 162.6 -1.0 -10.4 3 582 05 14 30 05 16 00 --- 15 43 52 29.0 163.0 -1.0 -10.1 90 587 05 14 31 05 16 00 IRAS16399 15 43 52 25.7 163.5 -1.0 -9.9 -27 587 No stop 05 19 30 --- 15 47 22 25.8 164.5 -0.9 -9.4 183 601 05 16 01 Schedule for JB2_MERL (Code Jm ) Page 6 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 05 20 00 J1642-0621 15 47 52 29.2 164.2 -0.9 -9.5 3 601 05 20 00 05 21 30 --- 15 49 23 29.3 164.6 -0.9 -9.2 90 607 05 20 01 05 21 30 IRAS16399 15 49 23 25.9 165.0 -0.9 -9.0 -27 607 No stop 05 25 00 --- 15 52 53 26.1 165.9 -0.9 -8.5 183 620 05 21 31 05 25 30 J1642-0621 15 53 23 29.4 165.7 -0.8 -8.6 3 620 05 25 30 05 27 00 --- 15 54 53 29.5 166.1 -0.8 -8.3 90 626 05 25 31 05 27 00 IRAS16399 15 54 53 26.1 166.5 -0.8 -8.2 -27 626 No stop 05 30 30 --- 15 58 24 26.2 167.4 -0.8 -7.6 183 640 05 27 01 05 31 00 J1642-0621 15 58 54 29.6 167.3 -0.7 -7.6 3 640 05 31 00 05 32 30 --- 16 00 24 29.7 167.7 -0.7 -7.4 90 645 05 31 01 05 32 30 IRAS16399 16 00 24 26.3 168.0 -0.7 -7.3 -27 645 No stop 05 36 00 --- 16 03 55 26.4 168.9 -0.7 -6.7 183 659 05 32 31 05 36 30 J1642-0621 16 04 25 29.8 168.8 -0.6 -6.7 3 659 05 36 30 05 38 00 --- 16 05 55 29.8 169.3 -0.6 -6.4 90 665 05 36 31 05 38 00 IRAS16399 16 05 55 26.5 169.5 -0.6 -6.4 -27 665 No stop 05 41 30 --- 16 09 26 26.6 170.5 -0.6 -5.8 183 678 05 38 01 05 42 00 J1642-0621 16 09 56 29.9 170.4 -0.6 -5.8 3 678 05 42 00 05 43 30 --- 16 11 26 30.0 170.8 -0.5 -5.5 90 684 05 42 01 05 43 30 IRAS16399 16 11 26 26.6 171.0 -0.5 -5.4 -27 684 No stop 05 47 00 --- 16 14 57 26.7 172.0 -0.5 -4.9 183 698 05 43 31 05 47 30 J1642-0621 16 15 27 30.1 172.0 -0.5 -4.8 3 698 05 47 30 05 49 00 --- 16 16 57 30.1 172.4 -0.4 -4.6 90 703 05 47 31 05 49 00 IRAS16399 16 16 57 26.7 172.5 -0.5 -4.5 -27 703 No stop 05 52 30 --- 16 20 28 26.8 173.5 -0.4 -4.0 183 717 05 49 01 05 53 00 J1642-0621 16 20 58 30.2 173.6 -0.4 -3.9 3 717 05 53 00 05 54 30 --- 16 22 28 30.2 174.0 -0.3 -3.6 90 723 05 53 01 05 54 30 IRAS16399 16 22 28 26.8 174.0 -0.4 -3.6 -27 723 No stop 05 58 00 --- 16 25 59 26.9 175.0 -0.3 -3.0 183 736 05 54 31 05 58 30 J1642-0621 16 26 29 30.3 175.1 -0.3 -2.9 3 736 05 58 30 06 00 00 --- 16 27 59 30.3 175.6 -0.3 -2.7 90 742 05 58 31 Schedule for JB2_MERL (Code Jm ) Page 7 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 06 00 00 IRAS16399 16 27 59 26.9 175.6 -0.3 -2.7 -27 742 No stop 06 03 30 --- 16 31 29 26.9 176.5 -0.2 -2.1 183 756 06 00 01 06 04 00 J1642-0621 16 32 00 30.3 176.7 -0.2 -2.0 3 756 06 04 00 06 05 30 --- 16 33 30 30.3 177.2 -0.2 -1.7 90 761 06 04 01 06 05 30 IRAS16399 16 33 30 27.0 177.1 -0.2 -1.8 -27 761 No stop 06 09 00 --- 16 37 00 27.0 178.1 -0.1 -1.2 183 775 06 05 31 06 09 30 J1642-0621 16 37 30 30.3 178.3 -0.1 -1.0 3 775 06 09 30 06 11 00 --- 16 39 01 30.4 178.7 -0.1 -0.8 90 781 06 09 31 06 11 00 IRAS16399 16 39 01 27.0 178.6 -0.1 -0.8 -27 781 No stop 06 14 30 --- 16 42 31 27.0 179.6 -0.0 -0.3 183 794 06 11 01 06 15 00 J1642-0621 16 43 01 30.4 179.9 -0.0 -0.1 3 794 06 15 00 06 16 30 --- 16 44 32 30.4 180.3 0.0 0.2 90 800 06 15 01 06 16 30 IRAS16399 16 44 32 27.0 180.1 0.0 0.1 -27 800 No stop 06 20 00 --- 16 48 02 27.0 181.1 0.1 0.7 183 813 06 16 31 06 20 30 J1642-0621 16 48 32 30.3 181.5 0.1 0.9 3 813 06 20 30 06 22 00 --- 16 50 02 30.3 181.9 0.1 1.2 90 819 06 20 31 06 22 00 IRAS16399 16 50 02 27.0 181.7 0.1 1.0 -27 819 No stop 06 25 30 --- 16 53 33 27.0 182.6 0.2 1.6 183 833 06 22 01 06 26 00 J1642-0621 16 54 03 30.3 183.1 0.2 1.8 3 833 06 26 00 06 27 30 --- 16 55 33 30.3 183.5 0.2 2.1 90 839 06 26 01 06 27 30 IRAS16399 16 55 33 26.9 183.2 0.2 1.9 -27 839 No stop 06 31 00 --- 16 59 04 26.9 184.1 0.3 2.5 183 852 06 27 31 06 31 30 J1642-0621 16 59 34 30.3 184.7 0.3 2.8 3 852 06 31 30 06 33 00 --- 17 01 04 30.2 185.1 0.3 3.1 90 858 06 31 31 06 33 00 IRAS16399 17 01 04 26.9 184.7 0.3 2.9 -27 858 No stop 06 36 30 --- 17 04 35 26.8 185.7 0.3 3.4 183 871 06 33 01 06 37 00 J1642-0621 17 05 05 30.2 186.2 0.4 3.8 3 871 06 37 00 06 38 30 --- 17 06 35 30.2 186.7 0.4 4.0 90 877 06 37 01 06 38 30 IRAS16399 17 06 35 26.8 186.2 0.4 3.8 -27 877 No stop 06 42 00 --- 17 10 06 26.8 187.2 0.4 4.4 183 891 06 38 31 Schedule for JB2_MERL (Code Jm ) Page 8 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 06 42 30 J1642-0621 17 10 36 30.1 187.8 0.5 4.7 3 891 06 42 30 06 44 00 --- 17 12 06 30.0 188.2 0.5 5.0 90 897 06 42 31 06 44 00 IRAS16399 17 12 06 26.7 187.7 0.5 4.7 -27 897 No stop 06 47 30 --- 17 15 37 26.6 188.7 0.5 5.3 183 910 06 44 01 06 48 00 J1642-0621 17 16 07 30.0 189.4 0.5 5.6 3 910 06 48 00 06 49 30 --- 17 17 37 29.9 189.8 0.6 5.9 90 916 06 48 01 06 49 30 IRAS16399 17 17 37 26.6 189.3 0.6 5.6 -27 916 No stop 06 53 00 --- 17 21 08 26.5 190.2 0.6 6.2 183 929 06 49 31 06 53 30 J1642-0621 17 21 38 29.8 191.0 0.6 6.6 3 929 06 53 30 06 55 00 --- 17 23 08 29.8 191.4 0.7 6.8 90 935 06 53 31 06 55 00 IRAS16399 17 23 08 26.4 190.8 0.7 6.5 -27 935 No stop 06 58 30 --- 17 26 38 26.3 191.7 0.7 7.1 183 949 06 55 01 06 59 00 J1642-0621 17 27 09 29.6 192.5 0.7 7.5 3 949 06 59 00 07 00 30 --- 17 28 39 29.6 193.0 0.8 7.8 90 955 06 59 01 07 00 30 IRAS16399 17 28 39 26.3 192.3 0.7 7.4 -27 955 No stop 07 04 00 --- 17 32 09 26.2 193.2 0.8 8.0 183 968 07 00 31 07 04 30 J1642-0621 17 32 39 29.5 194.1 0.8 8.4 4 968 07 04 30 07 06 00 --- 17 34 10 29.4 194.5 0.8 8.7 90 974 07 04 31 07 06 00 IRAS16399 17 34 10 26.1 193.8 0.8 8.3 -27 974 No stop 07 09 30 --- 17 37 40 26.0 194.7 0.9 8.9 183 987 07 06 01 07 10 00 J1642-0621 17 38 10 29.2 195.6 0.9 9.3 4 987 07 10 00 07 11 30 --- 17 39 41 29.2 196.1 0.9 9.6 90 993 07 10 01 07 11 30 IRAS16399 17 39 41 25.9 195.3 0.9 9.2 -27 993 No stop 07 15 00 --- 17 43 11 25.7 196.2 1.0 9.8 183 1007 07 11 31 07 15 30 J1642-0621 17 43 41 29.0 197.2 1.0 10.3 4 1007 07 15 30 07 17 00 --- 17 45 12 28.9 197.6 1.0 10.5 90 1013 07 15 31 07 17 00 IRAS16399 17 45 12 25.7 196.8 1.0 10.1 -26 1013 No stop 07 20 30 --- 17 48 42 25.5 197.7 1.1 10.6 184 1026 07 17 01 07 21 00 J1642-0621 17 49 12 28.8 198.7 1.1 11.2 4 1026 07 21 00 07 22 30 --- 17 50 42 28.7 199.1 1.1 11.4 90 1032 07 21 01 Schedule for JB2_MERL (Code Jm ) Page 9 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 07 22 30 IRAS16399 17 50 42 25.4 198.2 1.1 11.0 -26 1032 No stop 07 26 00 --- 17 54 13 25.2 199.2 1.2 11.5 184 1045 07 22 31 07 26 30 J1642-0621 17 54 43 28.5 200.3 1.2 12.0 4 1045 07 26 30 07 28 00 --- 17 56 13 28.4 200.7 1.2 12.3 90 1051 07 26 31 07 28 00 IRAS16399 17 56 13 25.1 199.7 1.2 11.8 -26 1051 No stop 07 31 30 --- 17 59 44 25.0 200.6 1.3 12.4 184 1065 07 28 01 07 32 00 J1642-0621 18 00 14 28.2 201.8 1.3 12.9 4 1065 07 32 00 07 33 30 --- 18 01 44 28.1 202.2 1.3 13.1 90 1070 07 32 01 07 33 30 IRAS16399 18 01 44 24.9 201.2 1.3 12.7 -26 1070 No stop 07 37 00 --- 18 05 15 24.7 202.1 1.4 13.2 184 1084 07 33 31 07 37 30 J1642-0621 18 05 45 27.9 203.3 1.4 13.8 4 1084 07 37 30 07 39 00 --- 18 07 15 27.8 203.7 1.4 14.0 90 1090 07 37 31 07 39 00 IRAS16399 18 07 15 24.5 202.6 1.4 13.5 -26 1090 No stop 07 42 30 --- 18 10 46 24.3 203.6 1.4 14.0 184 1103 07 39 01 07 43 00 J1642-0621 18 11 16 27.5 204.8 1.5 14.6 4 1103 07 43 00 07 44 30 --- 18 12 46 27.4 205.2 1.5 14.9 90 1109 07 43 01 07 44 30 IRAS16399 18 12 46 24.2 204.1 1.5 14.3 -26 1109 No stop 07 48 00 --- 18 16 17 24.0 205.0 1.5 14.9 184 1123 07 44 31 07 48 30 J1642-0621 18 16 47 27.2 206.3 1.6 15.5 4 1123 07 48 30 07 50 00 --- 18 18 17 27.1 206.7 1.6 15.7 90 1128 07 48 31 07 50 00 IRAS16399 18 18 17 23.9 205.5 1.6 15.2 -26 1128 No stop 07 53 30 --- 18 21 48 23.6 206.4 1.6 15.7 184 1142 07 50 01 07 54 00 J1642-0621 18 22 18 26.8 207.8 1.6 16.3 4 1142 07 54 00 07 55 30 --- 18 23 48 26.7 208.2 1.7 16.5 90 1148 07 54 01 07 55 30 IRAS16399 18 23 48 23.5 206.9 1.7 16.0 -26 1148 No stop 07 59 00 --- 18 27 18 23.3 207.8 1.7 16.5 184 1161 07 55 31 07 59 30 J1642-0621 18 27 48 26.4 209.2 1.7 17.1 4 1161 07 59 30 08 01 00 --- 18 29 19 26.3 209.6 1.8 17.3 90 1167 07 59 31 08 01 00 IRAS16399 18 29 19 23.1 208.4 1.8 16.8 -26 1167 No stop 08 04 30 --- 18 32 49 22.9 209.3 1.8 17.3 184 1181 08 01 01 Schedule for JB2_MERL (Code Jm ) Page 10 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 08 05 00 J1642-0621 18 33 19 26.0 210.7 1.8 17.9 4 1181 08 05 00 08 06 30 --- 18 34 50 25.9 211.1 1.9 18.1 90 1186 08 05 01 08 06 30 IRAS16399 18 34 50 22.7 209.8 1.8 17.6 -26 1186 No stop 08 10 00 --- 18 38 20 22.5 210.7 1.9 18.0 184 1200 08 06 31 08 10 30 J1642-0621 18 38 50 25.6 212.1 1.9 18.7 4 1200 08 10 30 08 12 00 --- 18 40 21 25.4 212.5 1.9 18.9 90 1206 08 10 31 08 12 00 IRAS16399 18 40 21 22.3 211.2 1.9 18.3 -26 1206 No stop 08 15 30 --- 18 43 51 22.0 212.1 2.0 18.8 184 1219 08 12 01 08 16 00 J1642-0621 18 44 21 25.1 213.6 2.0 19.4 4 1219 08 16 00 08 17 30 --- 18 45 51 25.0 213.9 2.0 19.7 90 1225 08 16 01 08 17 30 IRAS16399 18 45 51 21.9 212.6 2.0 19.1 -26 1225 No stop 08 21 00 --- 18 49 22 21.6 213.4 2.1 19.6 184 1239 08 17 31 08 21 30 J1642-0621 18 49 52 24.7 215.0 2.1 20.2 4 1239 08 21 30 08 23 00 --- 18 51 22 24.5 215.4 2.1 20.4 90 1244 08 21 31 08 23 00 IRAS16399 18 51 22 21.4 213.9 2.1 19.8 -26 1244 No stop 08 26 30 --- 18 54 53 21.1 214.8 2.2 20.3 184 1258 08 23 01 08 27 00 J1642-0621 18 55 23 24.2 216.4 2.2 20.9 4 1258 08 27 00 08 28 30 --- 18 56 53 24.0 216.8 2.2 21.1 90 1264 08 27 01 08 28 30 IRAS16399 18 56 53 21.0 215.3 2.2 20.6 -26 1264 No stop 08 32 00 --- 19 00 24 20.6 216.2 2.3 21.0 184 1277 08 28 31 08 32 30 J1642-0621 19 00 54 23.7 217.8 2.3 21.7 4 1277 08 32 30 08 34 00 --- 19 02 24 23.5 218.2 2.3 21.8 90 1283 08 32 31 08 34 00 IRAS16399 19 02 24 20.5 216.7 2.3 21.3 -26 1283 No stop 08 37 30 --- 19 05 55 20.2 217.5 2.4 21.7 184 1297 08 34 01 08 38 00 J1642-0621 19 06 25 23.2 219.2 2.4 22.4 5 1297 08 38 00 08 39 30 --- 19 07 55 23.0 219.5 2.4 22.5 90 1302 08 38 01 08 39 30 IRAS16399 19 07 55 20.0 218.0 2.4 22.0 -26 1302 No stop 08 43 00 --- 19 11 26 19.6 218.9 2.5 22.4 184 1316 08 39 31 08 43 30 J1642-0621 19 11 56 22.6 220.5 2.5 23.0 5 1316 08 43 30 08 45 00 --- 19 13 26 22.5 220.9 2.5 23.2 90 1322 08 43 31 Schedule for JB2_MERL (Code Jm ) Page 11 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 08 45 00 IRAS16399 19 13 26 19.5 219.3 2.5 22.6 -26 1322 No stop 08 48 30 --- 19 16 57 19.1 220.2 2.5 23.1 184 1335 08 45 01 08 49 00 J1642-0621 19 17 27 22.1 221.9 2.6 23.7 5 1335 08 49 00 08 50 30 --- 19 18 57 21.9 222.3 2.6 23.9 90 1341 08 49 01 08 50 30 IRAS16399 19 18 57 18.9 220.7 2.6 23.3 -26 1341 No stop 08 54 00 --- 19 22 27 18.6 221.5 2.6 23.7 184 1355 08 50 31 08 54 30 J1642-0621 19 22 58 21.5 223.2 2.7 24.4 5 1355 08 54 30 08 56 00 --- 19 24 28 21.4 223.6 2.7 24.5 90 1360 08 54 31 08 56 00 IRAS16399 19 24 28 18.4 222.0 2.7 24.0 -26 1360 No stop 08 59 30 --- 19 27 58 18.0 222.8 2.7 24.4 184 1374 08 56 01 09 00 00 J1642-0621 19 28 28 21.0 224.6 2.8 25.0 5 1374 09 00 00 09 01 30 --- 19 29 59 20.8 224.9 2.8 25.2 90 1380 09 00 01 09 01 30 IRAS16399 19 29 59 17.8 223.3 2.8 24.6 -25 1380 No stop 09 05 00 --- 19 33 29 17.5 224.1 2.8 25.0 185 1393 09 01 31 09 05 30 J1642-0621 19 33 59 20.4 225.9 2.8 25.6 5 1393 09 05 30 09 07 00 --- 19 35 30 20.2 226.3 2.9 25.8 90 1399 09 05 31 09 07 00 IRAS16399 19 35 30 17.2 224.6 2.9 25.2 -25 1399 No stop 09 10 30 --- 19 39 00 16.9 225.4 2.9 25.6 185 1413 09 07 01 09 11 00 J1642-0621 19 39 30 19.8 227.2 2.9 26.2 5 1413 09 11 00 09 12 30 --- 19 41 00 19.6 227.6 3.0 26.4 90 1418 09 11 01 09 12 30 IRAS16399 19 41 00 16.7 225.9 2.9 25.8 -25 1418 No stop 09 16 00 --- 19 44 31 16.3 226.7 3.0 26.2 185 1432 09 12 31 09 16 30 J1642-0621 19 45 01 19.2 228.5 3.0 26.8 5 1432 09 16 30 09 18 00 --- 19 46 31 19.0 228.9 3.1 27.0 90 1438 09 16 31 09 18 00 IRAS16399 19 46 31 16.1 227.1 3.0 26.4 -25 1438 No stop 09 21 30 --- 19 50 02 15.7 227.9 3.1 26.8 185 1451 09 18 01 09 22 00 J1642-0621 19 50 32 18.5 229.8 3.1 27.4 5 1451 09 22 00 09 23 30 --- 19 52 02 18.4 230.2 3.1 27.5 90 1457 09 22 01 09 23 30 IRAS16399 19 52 02 15.4 228.4 3.1 27.0 -25 1457 No stop 09 27 00 --- 19 55 33 15.1 229.2 3.2 27.4 185 1470 09 23 31 Schedule for JB2_MERL (Code Jm ) Page 12 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 09 27 30 J1642-0621 19 56 03 17.9 231.1 3.2 27.9 5 1470 09 27 30 09 29 00 --- 19 57 33 17.7 231.4 3.2 28.1 90 1476 09 27 31 09 29 00 IRAS16399 19 57 33 14.8 229.6 3.2 27.6 -25 1476 No stop 09 32 30 --- 20 01 04 14.4 230.4 3.3 27.9 185 1490 09 29 01 09 33 00 J1642-0621 20 01 34 17.3 232.4 3.3 28.5 5 1490 09 33 00 09 34 30 --- 20 03 04 17.1 232.7 3.3 28.6 90 1496 09 33 01 09 34 30 IRAS16399 20 03 04 14.2 230.9 3.3 28.1 -25 1496 No stop 09 38 00 --- 20 06 35 13.8 231.7 3.4 28.5 185 1509 09 34 31 09 38 30 J1642-0621 20 07 05 16.6 233.6 3.4 29.0 5 1509 09 38 30 09 40 00 --- 20 08 35 16.4 233.9 3.4 29.1 90 1515 09 38 31 09 40 00 IRAS16399 20 08 35 13.5 232.1 3.4 28.6 -25 1515 No stop 09 43 30 --- 20 12 06 13.1 232.9 3.5 29.0 185 1528 09 40 01 09 44 00 J1642-0621 20 12 36 15.9 234.9 3.5 29.5 5 1528 09 44 00 09 45 30 --- 20 14 06 15.7 235.2 3.5 29.6 90 1534 09 44 01 09 45 30 IRAS16399 20 14 06 12.9 233.3 3.5 29.2 -25 1534 No stop 09 49 00 --- 20 17 36 12.5 234.1 3.6 29.5 185 1548 09 45 31 09 49 30 J1642-0621 20 18 07 15.2 236.1 3.6 30.0 5 1548 09 49 30 09 51 00 --- 20 19 37 15.1 236.4 3.6 30.1 90 1554 09 49 31 09 51 00 IRAS16399 20 19 37 12.2 234.6 3.6 29.7 -25 1554 No stop 09 54 30 --- 20 23 07 11.8 235.3 3.7 30.0 185 1567 09 51 01 09 55 00 J1642-0621 20 23 37 14.6 237.3 3.7 30.5 6 1567 09 55 00 09 56 30 --- 20 25 08 14.4 237.6 3.7 30.6 90 1573 09 55 01 09 56 30 IRAS16399 20 25 08 11.5 235.8 3.7 30.1 -25 1573 No stop 10 00 00 --- 20 28 38 11.1 236.5 3.7 30.4 185 1586 09 56 31 10 00 30 J1642-0621 20 29 08 13.9 238.5 3.8 30.9 6 1586 10 00 30 10 02 00 --- 20 30 39 13.7 238.9 3.8 31.0 90 1592 10 00 31 10 02 00 IRAS16399 20 30 39 10.9 237.0 3.8 30.6 -25 1592 No stop 10 05 30 --- 20 34 09 10.4 237.7 3.8 30.9 185 1606 10 02 01 10 06 00 J1642-0621 20 34 39 13.1 239.7 3.9 31.3 6 1606 10 06 00 10 07 30 --- 20 36 10 13.0 240.1 3.9 31.5 90 1612 10 06 01 Schedule for JB2_MERL (Code Jm ) Page 13 OH gas in Megamaser Galaxies: imaging the diffuse and compact emission 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 1 Mar 2025 Day 60 --- 10 07 30 IRAS16399 20 36 10 10.2 238.1 3.9 31.1 -25 1612 No stop 10 11 00 --- 20 39 40 9.7 238.9 3.9 31.3 185 1625 10 07 31 10 11 30 J1642-0621 20 40 10 12.4 240.9 3.9 31.8 6 1625 10 11 30 10 13 00 --- 20 41 40 12.2 241.3 4.0 31.9 90 1631 10 11 31 10 16 00 3C286 20 44 41 14.2 302.2 7.2 35.9 -26 1631 10 16 00 10 21 00 --- 20 49 42 13.5 303.1 7.3 35.5 274 1650 10 16 01 10 24 00 3C345 20 52 42 46.6 278.0 4.1 50.4 63 1650 10 24 00 10 29 00 --- 20 57 43 45.9 278.9 4.2 50.3 300 1669 10 24 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess125.L1024usb --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 15 Station: JB2_MERL 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: 8 Setup file default. Used with PCAL = off LO sum= 1587.22 1587.22 BBC fr= 684.78 684.78 Bandwd= 64.00 64.00 Matching frequency sets: 8 9 10 11 12 15 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) * IRAS16399 16 39 55.599269 * 16 42 40.107370 16 44 02.930024 0.00 -09 37 35.64506 *-09 43 13.05900 -09 46 12.26913 0.00 From catalog imbedded in main SCHED input file. * J1642-0621 16 39 21.443854 * 16 42 02.177700 16 43 23.109132 0.00 -06 15 43.81936 *-06 21 23.69500 -06 24 25.42123 0.00 From catalog imbedded in main SCHED input file. * 3C345 16 41 17.606234 * 16 42 58.809971 16 43 49.891629 0.00 39 54 10.81496 * 39 48 36.99402 39 45 24.04354 0.00 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657760 * 13 31 08.288052 13 32 19.443286 0.00 30 45 58.64032 * 30 30 32.95896 30 22 30.71274 0.00 From catalog imbedded in main SCHED input file. 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 IRAS16399 sess125.L1024usb 1 2 3 4 5 6 7 8 13 14 4.900 305.712 J1642-0621 sess125.L1024usb 1 2 3 4 5 6 7 8 13 14 2.283 148.159 3C345 sess125.L1024usb 1 2 3 4 5 6 7 8 13 14 0.300 24.516 3C286 sess125.L1024usb 1 2 3 5 6 7 8 13 14 0.250 13.906 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) IRAS16399 90.1 J1642-0621 90.7 3C345 95.9 3C286 135.6 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