COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: A definite answer to the nature of the water gigamaser in TXS2226-184 Exp. Code: ET045B Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: A. Tarchi Address: INAF - Osservatorio Astronomico di Cagliari Via della Scienza 5 I-09047 Selargius (Cagliari) Italy Phone: +39 07071180235 EMAIL: andrea.tarchi@inaf.it Fax: Phone during observation: +39 07071180235 Observing mode: Observations of TXS2226-184 at 5 GHz (2048 Mb/s) Notes: phase-cal OFF EVN+MERLIN Schedule for URUMQI (Code Ur ) Page 2 A definite answer to the nature of the water gigamaser in TXS2226-184 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 ---------------------------------------------------------------------------------------- --- Sun 7 Mar 2021 Day 66 --- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 210.49 210.49 210.49 210.49 274.49 274.49 274.49 274.49 338.49 338.49 338.49 338.49 402.49 402.49 402.49 402.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 07 30 00 3C345 00 19 41 12.3 -45.9 7.6 42.7 0 0 07 30 00 07 38 00 --- 00 27 43 11.3 -44.8 7.7 41.7 480 123 07 30 01 07 44 00 J2232-1659 00 33 44 23.7 211.6 2.0 23.4 100 123 07 44 00 07 46 00 =2229-172 00 35 44 23.5 212.0 2.0 23.7 120 154 07 44 01 07 46 00 TXS 00 35 44 22.1 212.3 2.1 24.0 -6 154 No stop 07 49 00 --- 00 38 44 21.8 213.0 2.1 24.5 174 200 07 46 01 07 49 30 J2232-1659 00 39 14 23.1 212.9 2.1 24.3 24 200 07 49 30 07 51 30 =2229-172 00 41 15 22.9 213.3 2.1 24.6 120 231 07 49 31 07 51 30 TXS 00 41 15 21.5 213.5 2.2 25.0 -6 231 No stop 07 54 30 --- 00 44 15 21.2 214.2 2.2 25.4 174 277 07 51 31 07 54 30 J2232-1659 00 44 15 22.6 214.1 2.2 25.1 -6 277 No stop 07 56 30 =2229-172 00 46 16 22.4 214.5 2.2 25.5 114 308 07 54 31 07 56 30 TXS 00 46 16 21.0 214.7 2.3 25.8 -6 308 No stop 07 59 30 --- 00 49 16 20.7 215.4 2.3 26.2 174 354 07 56 31 08 00 00 J2232-1659 00 49 46 22.1 215.3 2.3 26.0 24 354 08 00 00 08 02 00 =2229-172 00 51 47 21.8 215.8 2.3 26.3 120 385 08 00 01 08 02 00 TXS 00 51 47 20.4 216.0 2.4 26.6 -6 385 No stop 08 05 00 --- 00 54 47 20.1 216.6 2.4 27.1 174 431 08 02 01 08 05 00 J2232-1659 00 54 47 21.5 216.5 2.4 26.8 -6 431 No stop 08 07 00 =2229-172 00 56 47 21.3 217.0 2.4 27.1 114 462 08 05 01 08 07 00 TXS 00 56 47 19.9 217.1 2.4 27.4 -6 462 No stop 08 10 00 --- 00 59 48 19.6 217.8 2.5 27.9 174 508 08 07 01 08 10 30 J2232-1659 01 00 18 20.9 217.8 2.4 27.7 24 508 08 10 30 08 12 30 =2229-172 01 02 18 20.7 218.2 2.5 28.0 120 538 08 10 31 08 12 30 TXS 01 02 18 19.3 218.3 2.5 28.3 -6 538 No stop 08 15 30 --- 01 05 19 18.9 219.0 2.6 28.7 174 585 08 12 31 Schedule for URUMQI (Code Ur ) Page 3 A definite answer to the nature of the water gigamaser in TXS2226-184 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 ---------------------------------------------------------------------------------------- --- Sun 7 Mar 2021 Day 66 --- 08 15 30 J2232-1659 01 05 19 20.4 218.9 2.5 28.4 -6 585 No stop 08 17 30 =2229-172 01 07 19 20.1 219.3 2.6 28.7 114 615 08 15 31 08 17 30 TXS 01 07 19 18.7 219.4 2.6 29.0 -6 615 No stop 08 20 30 --- 01 10 20 18.4 220.1 2.7 29.4 174 662 08 17 31 08 21 00 J2232-1659 01 10 50 19.7 220.1 2.6 29.3 24 662 08 21 00 08 23 00 =2229-172 01 12 50 19.5 220.6 2.7 29.5 120 692 08 21 01 08 23 00 TXS 01 12 50 18.1 220.6 2.7 29.8 -6 692 No stop 08 26 00 --- 01 15 50 17.7 221.3 2.8 30.2 174 738 08 23 01 08 26 00 J2232-1659 01 15 50 19.1 221.2 2.7 30.0 -6 738 No stop 08 28 00 =2229-172 01 17 51 18.9 221.7 2.7 30.3 114 769 08 26 01 08 28 00 TXS 01 17 51 17.5 221.7 2.8 30.5 -6 769 No stop 08 31 00 --- 01 20 51 17.1 222.4 2.8 31.0 174 815 08 28 01 08 31 30 J2232-1659 01 21 21 18.5 222.4 2.8 30.8 24 815 08 31 30 08 33 30 =2229-172 01 23 22 18.2 222.9 2.8 31.1 120 846 08 31 31 08 33 30 TXS 01 23 22 16.8 222.9 2.9 31.3 -6 846 No stop 08 36 30 --- 01 26 22 16.4 223.5 2.9 31.7 174 892 08 33 31 08 36 30 J2232-1659 01 26 22 17.8 223.5 2.9 31.5 -6 892 No stop 08 38 30 =2229-172 01 28 23 17.6 223.9 2.9 31.7 114 923 08 36 31 08 38 30 TXS 01 28 23 16.2 223.9 3.0 32.0 -6 923 No stop 08 41 30 --- 01 31 23 15.8 224.6 3.0 32.4 174 969 08 38 31 08 42 00 J2232-1659 01 31 53 17.1 224.7 3.0 32.2 24 969 08 42 00 08 44 00 =2229-172 01 33 53 16.9 225.1 3.0 32.5 120 1000 08 42 01 08 44 00 TXS 01 33 53 15.5 225.1 3.1 32.7 -6 1000 No stop 08 47 00 --- 01 36 54 15.1 225.7 3.1 33.1 174 1046 08 44 01 08 47 00 J2232-1659 01 36 54 16.5 225.7 3.1 32.9 -6 1046 No stop 08 49 00 =2229-172 01 38 54 16.2 226.2 3.1 33.2 114 1077 08 47 01 08 49 00 TXS 01 38 54 14.8 226.1 3.1 33.4 -6 1077 No stop 08 52 00 --- 01 41 55 14.4 226.7 3.2 33.8 174 1123 08 49 01 08 52 30 J2232-1659 01 42 25 15.8 226.9 3.1 33.6 24 1123 08 52 30 08 54 30 =2229-172 01 44 25 15.5 227.3 3.2 33.9 120 1154 08 52 31 Schedule for URUMQI (Code Ur ) Page 4 A definite answer to the nature of the water gigamaser in TXS2226-184 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 ---------------------------------------------------------------------------------------- --- Sun 7 Mar 2021 Day 66 --- 08 54 30 TXS 01 44 25 14.1 227.3 3.2 34.1 -6 1154 No stop 08 57 30 --- 01 47 26 13.7 227.9 3.3 34.5 174 1200 08 54 31 08 57 30 J2232-1659 01 47 26 15.1 227.9 3.2 34.3 -6 1200 No stop 08 59 30 =2229-172 01 49 26 14.8 228.3 3.3 34.5 114 1231 08 57 31 08 59 30 TXS 01 49 26 13.4 228.3 3.3 34.7 -6 1231 No stop 09 02 30 --- 01 52 26 13.0 228.9 3.4 35.1 174 1277 08 59 31 09 03 00 J2232-1659 01 52 57 14.4 229.0 3.3 34.9 24 1277 09 03 00 09 05 00 =2229-172 01 54 57 14.1 229.4 3.4 35.2 120 1308 09 03 01 09 05 00 TXS 01 54 57 12.7 229.4 3.4 35.4 -6 1308 No stop 09 08 00 --- 01 57 57 12.2 230.0 3.5 35.8 174 1354 09 05 01 09 08 00 J2232-1659 01 57 57 13.7 230.1 3.4 35.5 -6 1354 No stop 09 10 00 =2229-172 01 59 58 13.4 230.5 3.4 35.8 114 1385 09 08 01 09 10 00 TXS 01 59 58 12.0 230.4 3.5 36.0 -6 1385 No stop 09 13 00 --- 02 02 58 11.5 230.9 3.5 36.4 174 1431 09 10 01 09 13 30 J2232-1659 02 03 28 12.9 231.1 3.5 36.2 24 1431 09 13 30 09 15 30 =2229-172 02 05 29 12.6 231.5 3.5 36.4 120 1462 09 13 31 09 15 30 TXS 02 05 29 11.2 231.4 3.6 36.6 -6 1462 No stop 09 18 30 --- 02 08 29 10.8 232.0 3.6 37.0 174 1508 09 15 31 09 18 30 J2232-1659 02 08 29 12.2 232.1 3.6 36.8 -6 1508 No stop 09 20 30 =2229-172 02 10 29 11.9 232.5 3.6 37.0 114 1538 09 18 31 09 20 30 TXS 02 10 29 10.5 232.4 3.7 37.2 -6 1538 No stop 09 23 30 --- 02 13 30 10.0 233.0 3.7 37.6 174 1585 09 20 31 09 24 00 J2232-1659 02 14 00 11.4 233.2 3.7 37.4 24 1585 09 24 00 09 26 00 =2229-172 02 16 00 11.1 233.6 3.7 37.6 120 1615 09 24 01 09 26 00 TXS 02 16 00 9.7 233.5 3.8 37.8 -6 1615 No stop 09 29 00 --- 02 19 01 9.2 234.0 3.8 38.2 174 1662 09 26 01 09 29 00 J2232-1659 02 19 01 10.6 234.2 3.8 37.9 -6 1662 No stop 09 31 00 =2229-172 02 21 01 10.3 234.6 3.8 38.2 114 1692 09 29 01 09 31 00 TXS 02 21 01 8.9 234.4 3.8 38.4 -6 1692 No stop 09 34 00 --- 02 24 02 8.5 235.0 3.9 38.7 174 1738 09 31 01 Schedule for URUMQI (Code Ur ) Page 5 A definite answer to the nature of the water gigamaser in TXS2226-184 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 ---------------------------------------------------------------------------------------- --- Sun 7 Mar 2021 Day 66 --- 09 34 30 J2232-1659 02 24 32 9.8 235.2 3.9 38.5 24 1738 09 34 30 09 36 30 =2229-172 02 26 32 9.5 235.6 3.9 38.7 120 1769 09 34 31 09 36 30 TXS 02 26 32 8.1 235.4 3.9 39.0 -6 1769 No stop 09 39 30 --- 02 29 33 7.7 236.0 4.0 39.3 174 1815 09 36 31 09 39 30 J2232-1659 02 29 33 9.1 236.2 3.9 39.1 -6 1815 No stop 09 41 30 =2229-172 02 31 33 8.8 236.6 4.0 39.3 114 1846 09 39 31 09 41 30 TXS 02 31 33 7.4 236.4 4.0 39.5 -6 1846 No stop 09 44 30 --- 02 34 33 6.9 236.9 4.1 39.8 174 1892 09 41 31 09 45 00 J2232-1659 02 35 03 8.2 237.2 4.0 39.6 24 1892 09 45 00 09 47 00 =2229-172 02 37 04 7.9 237.6 4.1 39.8 120 1923 09 45 01 09 47 00 TXS 02 37 04 6.5 237.4 4.1 40.0 -6 1923 No stop 09 50 00 --- 02 40 04 6.1 237.9 4.2 40.3 174 1969 09 47 01 09 50 00 J2232-1659 02 40 04 7.5 238.1 4.1 40.1 -6 1969 No stop 09 52 00 =2229-172 02 42 05 7.2 238.5 4.1 40.3 114 2000 09 50 01 09 52 00 TXS 02 42 05 5.8 238.3 4.2 40.5 -6 2000 No stop 09 55 00 --- 02 45 05 5.3 238.9 4.2 40.8 174 2046 09 52 01 09 55 30 J2232-1659 02 45 35 6.6 239.2 4.2 40.6 24 2046 09 55 30 09 57 30 =2229-172 02 47 36 6.3 239.5 4.2 40.8 120 2077 09 55 31 10 00 30 J2232-1659 02 50 36 5.8 240.1 4.3 41.1 178 2077 10 00 30 10 02 30 =2229-172 02 52 36 5.5 240.4 4.3 41.3 120 2108 10 00 31 11 23 15 3C48 04 13 35 58.3 264.4 2.6 59.7 4709 2108 11 23 15 11 30 15 --- 04 20 36 57.1 265.8 2.7 60.0 420 2215 11 23 16 12 34 35 3C454.3 05 25 06 5.8 286.9 6.5 46.3 3777 2215 12 34 35 12 39 35 --- 05 30 07 4.9 287.8 6.6 D 46.0 0 2292 12 34 36 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess121.C2048 --- 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: 12 Station: URUMQI Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 The following frequency sets based on these setups were used. Frequency Set: 6 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 210.49 210.49 210.49 210.49 274.49 274.49 274.49 274.49 338.49 338.49 338.49 338.49 402.49 402.49 402.49 402.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 6 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * TXS 22 26 30.065630 * 22 29 12.494600 22 30 18.881967 0.00 -18 26 09.57617 *-18 10 47.24200 -18 04 28.99753 0.00 From catalog imbedded in main SCHED input file. J0137+3309 01 34 49.826374 * 01 37 41.299440 01 38 51.768519 0.52 0134+329 32 54 20.25881 * 33 09 35.13299 33 15 56.63291 0.50 * 3C48 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.vlba.2012jul J0137+33 rfc_2012b Petrov, 2012, unpublished 140 observations J1642+3948 16 41 17.606228 * 16 42 58.809965 16 43 41.199694 0.77 * 3C345 39 54 10.81496 * 39 48 36.99402 39 45 58.75868 0.52 1641+399 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.vlba.2012jul J1642+39 GSFC 2011B astro solution 52621 Observations * J2232-1659 22 29 40.999940 * 22 32 22.564554 22 33 28.600541 0.26 2229-172 -17 14 29.56607 *-16 59 01.89249 -16 52 41.60980 0.43 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.vlba.2012jul rfc_2012b Petrov, 2012, unpublished 86 observations J2253+1608 22 51 29.519738 * 22 53 57.747937 22 54 58.244678 0.68 * 3C454.3 15 52 54.34810 * 16 08 53.56093 16 15 26.22048 0.72 2251+158 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.vlba.2012jul J2253+16 GSFC 2011B astro solution 39747 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 TXS sess121.C2048 1 2 3 4 5 6 7 8 9 13 18 19 + 3.500 337.788 3C48 sess121.C2048 1 2 3 4 5 6 7 8 9 13 18 19 + 0.117 22.154 3C345 sess121.C2048 1 2 3 4 5 6 7 8 9 13 0.133 18.133 J2232-1659 sess121.C2048 1 2 3 4 5 6 7 8 9 13 18 19 + 2.417 251.118 3C454.3 sess121.C2048 1 2 3 4 5 7 8 9 13 19 0.176 21.167 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) TXS 16.6 3C48 51.7 3C345 98.8 J2232-1659 15.2 3C454.3 21.8 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