COVER INFORMATION Station: TIANMA65 (Code T6 ) 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 TIANMA65 (Code T6 ) 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: 1554.72 1554.72 1607.22 1607.22 1659.72 1659.72 1691.72 1691.72 Next BBC frequencies: 715.28 715.28 662.78 662.78 610.28 610.28 578.28 578.28 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 01 30 00 3C345 20 11 00 47.5 -63.4 3.5 85.1 0 0 01 30 00 01 35 00 --- 20 16 01 46.6 -63.3 3.5 84.3 300 39 01 30 01 01 44 00 J1642-0621 20 25 02 25.2 244.7 3.7 51.2 -78 39 01 44 00 01 45 30 --- 20 26 33 24.9 244.9 3.7 51.3 12 50 01 44 01 01 45 30 IRAS16399 20 26 33 22.9 242.0 3.7 50.1 -10 50 No stop 01 49 00 --- 20 30 03 22.2 242.6 3.8 50.5 200 77 01 45 31 01 49 30 J1642-0621 20 30 33 24.1 245.6 3.8 51.7 20 77 01 49 30 01 53 30 --- 20 34 34 23.3 246.3 3.9 52.1 240 108 01 49 31 01 53 30 IRAS16399 20 34 34 21.4 243.3 3.8 51.0 -10 108 No stop 01 57 00 --- 20 38 05 20.7 243.9 3.9 51.3 200 135 01 53 31 01 57 30 J1642-0621 20 38 35 22.5 247.0 3.9 52.5 20 135 01 57 30 01 59 00 --- 20 40 05 22.2 247.2 3.9 52.6 90 147 01 57 31 01 59 00 IRAS16399 20 40 05 20.3 244.3 3.9 51.5 -10 147 No stop 02 02 30 --- 20 43 35 19.6 244.8 4.0 51.9 200 174 01 59 01 02 03 00 J1642-0621 20 44 06 21.4 247.9 4.0 53.0 20 174 02 03 00 02 07 00 --- 20 48 06 20.6 248.5 4.1 53.3 240 205 02 03 01 02 10 00 3C345 20 51 07 39.9 298.0 4.1 79.6 79 205 02 10 00 02 14 00 --- 20 55 07 39.1 298.2 4.2 79.1 240 236 02 10 01 02 28 00 J1642-0621 21 09 10 16.4 251.7 4.4 54.9 741 236 02 28 00 02 30 00 --- 21 11 10 16.0 252.0 4.5 55.1 120 251 02 28 01 02 30 00 IRAS16399 21 11 10 14.2 249.1 4.5 54.3 -9 251 No stop 02 33 30 --- 21 14 41 13.5 249.6 4.5 54.5 201 278 02 30 01 02 34 00 J1642-0621 21 15 11 15.2 252.6 4.5 55.3 21 278 02 34 00 02 35 30 --- 21 16 41 14.9 252.8 4.6 55.4 90 290 02 34 01 02 35 30 IRAS16399 21 16 41 13.1 249.9 4.5 54.7 -9 290 No stop 02 39 00 --- 21 20 11 12.4 250.4 4.6 55.0 201 317 02 35 31 02 39 30 J1642-0621 21 20 42 14.1 253.4 4.6 55.7 21 317 02 39 30 02 41 00 --- 21 22 12 13.7 253.6 4.6 55.8 90 328 02 39 31 Schedule for TIANMA65 (Code T6 ) 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 --- 02 41 00 IRAS16399 21 22 12 12.0 250.7 4.6 55.1 -9 328 No stop 02 44 30 --- 21 25 42 11.3 251.2 4.7 55.3 201 356 02 41 01 02 45 00 J1642-0621 21 26 12 12.9 254.2 4.7 56.0 21 356 02 45 00 02 46 30 --- 21 27 43 12.6 254.4 4.7 56.1 90 367 02 45 01 02 46 30 IRAS16399 21 27 43 10.9 251.5 4.7 55.5 -9 367 No stop 02 50 00 --- 21 31 13 10.1 252.0 4.8 55.7 201 394 02 46 31 02 50 30 J1642-0621 21 31 43 11.8 255.0 4.8 56.3 21 394 02 50 30 02 52 00 --- 21 33 14 11.5 255.2 4.8 56.4 90 406 02 50 31 02 52 00 IRAS16399 21 33 14 9.7 252.3 4.8 55.9 -9 406 No stop 02 55 30 --- 21 36 44 9.0 252.8 4.9 56.1 201 433 02 52 01 02 56 00 J1642-0621 21 37 14 10.6 255.8 4.9 56.6 21 433 02 56 00 02 57 30 --- 21 38 44 10.3 256.0 4.9 56.7 90 444 02 56 01 03 01 30 J1642-0621 21 42 45 9.5 256.5 5.0 56.9 238 444 03 01 30 03 03 00 --- 21 44 15 9.2 256.7 5.0 57.0 90 456 03 01 31 03 28 00 3C345 22 09 19 25.4 302.7 5.4 69.6 1409 456 03 28 00 03 32 00 --- 22 13 20 24.7 303.0 5.5 69.1 240 487 03 28 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: 9 Station: TIANMA65 Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 2270.00 2270.00 2270.00 2270.00 2270.00 2270.00 2270.00 2270.00 Net SB= U U U U U U U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 5 2 6 3 7 4 8 BBC SB= L L L L L L L L IF = A4 B3 A4 B3 A4 B3 A4 B3 The following frequency sets based on these setups were used. Frequency Set: 4 Setup file default. Used with PCAL = off LO sum= 1554.72 1554.72 1607.22 1607.22 1659.72 1659.72 1691.72 1691.72 BBC fr= 715.28 715.28 662.78 662.78 610.28 610.28 578.28 578.28 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 4 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * 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