COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: new UCD -6cm Exp. Code: EG126C Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Jose C. Guirado Address: Dpto. Astronomia, Univ. Valencia Dr. Moliner 50 E-46100 Burjassot Valencia, Spain Phone: +34 963543073 EMAIL: guirado@uv.es Fax: +34 963543084 Phone during observation: +34 963543073, +34629509130 Observing mode: Phase-referencing at 6cm (2048 Mb/s) Notes: Dual Pol Schedule for URUMQI (Code Ur ) Page 2 new UCD -6cm 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- Next scan frequencies: 4824.00 4824.00 4824.00 4824.00 4888.00 4888.00 4888.00 4888.00 4952.00 4952.00 4952.00 4952.00 5016.00 5016.00 5016.00 5016.00 Next BBC frequencies: 204.00 204.00 204.00 204.00 268.00 268.00 268.00 268.00 332.00 332.00 332.00 332.00 396.00 396.00 396.00 396.00 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 22 30 00 3C273 14 51 41 37.9 227.1 2.4 32.1 0 0 22 30 00 22 36 00 --- 14 57 42 37.1 228.7 2.5 33.1 360 92 22 30 01 22 38 00 J1120-1243 14 59 43 14.9 235.3 3.6 37.7 73 92 22 38 00 22 42 00 --- 15 03 43 14.3 236.1 3.7 38.1 240 154 22 38 01 22 42 00 2MASSJ1119 15 03 43 15.1 236.9 3.7 38.4 -5 154 No stop 22 46 00 --- 15 07 44 14.4 237.7 3.8 38.8 235 215 22 42 01 22 46 30 J1120-1243 15 08 14 13.6 237.0 3.8 38.6 25 215 22 46 30 22 48 30 --- 15 10 14 13.3 237.4 3.8 38.8 120 246 22 46 31 22 48 30 2MASSJ1119 15 10 14 14.1 238.2 3.8 39.1 -5 246 No stop 22 52 30 --- 15 14 15 13.4 239.0 3.9 39.4 235 308 22 48 31 22 53 00 J1120-1243 15 14 45 12.6 238.2 3.9 39.3 25 308 22 53 00 22 54 30 --- 15 16 15 12.4 238.5 3.9 39.4 90 331 22 53 01 22 54 30 2MASSJ1119 15 16 15 13.1 239.4 3.9 39.6 -5 331 No stop 22 58 30 --- 15 20 16 12.5 240.1 4.0 40.0 235 392 22 54 31 22 59 00 J1120-1243 15 20 46 11.7 239.4 4.0 39.8 25 392 22 59 00 23 01 00 --- 15 22 46 11.4 239.8 4.0 40.0 120 423 22 59 01 23 01 00 2MASSJ1119 15 22 46 12.1 240.6 4.0 40.2 -5 423 No stop 23 05 00 --- 15 26 47 11.5 241.4 4.1 40.6 235 485 23 01 01 23 05 30 J1120-1243 15 27 17 10.7 240.6 4.1 40.4 25 485 23 05 30 23 07 00 --- 15 28 47 10.4 240.9 4.1 40.6 90 508 23 05 31 23 07 00 2MASSJ1119 15 28 47 11.1 241.8 4.1 40.8 -5 508 No stop 23 11 00 --- 15 32 48 10.5 242.5 4.2 41.1 235 569 23 07 01 23 11 30 J1120-1243 15 33 18 9.7 241.8 4.2 41.0 25 569 23 11 30 23 13 30 --- 15 35 19 9.4 242.1 4.2 41.2 120 600 23 11 31 23 13 30 2MASSJ1119 15 35 19 10.1 243.0 4.2 41.3 -5 600 No stop 23 17 30 --- 15 39 19 9.4 243.7 4.3 41.7 235 662 23 13 31 Schedule for URUMQI (Code Ur ) Page 3 new UCD -6cm 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 ---------------------------------------------------------------------------------------- --- Wed 28 Feb 2024 Day 59 --- 23 18 00 J1120-1243 15 39 49 8.6 243.0 4.3 41.5 25 662 23 18 00 23 19 30 --- 15 41 19 8.4 243.2 4.3 41.7 90 685 23 18 01 23 19 30 2MASSJ1119 15 41 19 9.1 244.1 4.3 41.8 -5 685 No stop 23 23 30 --- 15 45 20 8.5 244.8 4.4 42.1 235 746 23 19 31 23 24 00 J1120-1243 15 45 50 7.7 244.1 4.4 42.0 25 746 23 24 00 23 26 00 --- 15 47 51 7.3 244.4 4.4 42.2 120 777 23 24 01 23 26 00 2MASSJ1119 15 47 51 8.0 245.3 4.5 42.3 -5 777 No stop 23 30 00 --- 15 51 51 7.4 246.0 4.5 42.6 235 838 23 26 01 23 30 30 J1120-1243 15 52 21 6.6 245.3 4.5 42.5 25 838 23 30 30 23 32 00 --- 15 53 52 6.4 245.5 4.5 42.7 90 862 23 30 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess124.C4096 --- 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: 10 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= 4824.00 4824.00 4824.00 4824.00 4888.00 4888.00 4888.00 4888.00 4952.00 4952.00 4952.00 4952.00 5016.00 5016.00 5016.00 5016.00 BBC fr= 204.00 204.00 204.00 204.00 268.00 268.00 268.00 268.00 332.00 332.00 332.00 332.00 396.00 396.00 396.00 396.00 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) * 3C273 12 26 33.245846 * 12 29 06.699742 12 30 21.702256 0.00 02 19 43.30561 * 02 03 08.59812 01 55 01.01869 0.00 From catalog imbedded in main SCHED input file. * 2MASSJ1119 11 17 01.263722 * 11 19 32.561250 11 20 46.578535 0.00 -11 21 22.46204 *-11 37 48.07000 -11 45 48.29793 0.00 From catalog imbedded in main SCHED input file. * J1120-1243 11 17 40.982800 * 11 20 12.080526 11 21 25.999215 0.00 -12 27 11.69570 *-12 43 37.82838 -12 51 38.19668 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 3C273 sess124.C4096 1 2 3 4 5 6 7 9 11 0.217 10.750 2MASSJ1119 sess124.C4096 1 2 3 4 5 6 7 9 11 2.333 100.935 J1120-1243 sess124.C4096 1 2 3 4 5 6 7 9 11 1.092 47.816 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) 3C273 153.3 2MASSJ1119 158.5 J1120-1243 157.5 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