COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: LSR J1835 global observations Exp. Code: GC039 Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Juan B. Climent Address: Dpto. Astronomia, Univ. Valencia Dr. Moliner 50 E-46100 Burjassot Valencia, Spain Phone: +34 963543078 EMAIL: cliojuan@uv.es Fax: Phone during observation: +34 963543078, +34629509130 Observing mode: Phase-referencing at 6cm (4 Gbps) Notes: Please, make sure PHASE CAL is OFF Version 2: Removed Nt and added Ys to stations; changed the scan order a little bit. Schedule for URUMQI (Code Ur ) Page 2 LSR J1835 global observations 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 ---------------------------------------------------------------------------------------- --- Thu 2 Nov 2023 Day 306 --- Next scan frequencies: 4804.00 4804.00 4804.00 4804.00 4868.00 4868.00 4868.00 4868.00 4932.00 4932.00 4932.00 4932.00 4996.00 4996.00 4996.00 4996.00 Next BBC frequencies: 184.00 184.00 184.00 184.00 248.00 248.00 248.00 248.00 312.00 312.00 312.00 312.00 376.00 376.00 376.00 376.00 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 16 12 50 1830+285 00 48 16 16.8 -66.3 6.2 49.2 0 0 16 12 50 16 22 50 --- 00 58 18 15.1 -64.8 6.4 48.4 600 154 16 12 51 16 23 20 J1848+3219 00 58 48 20.0 -64.0 6.2 50.5 17 154 16 23 20 16 25 20 =1846+322 01 00 48 19.7 -63.7 6.2 50.3 120 185 16 23 21 16 25 20 LSRJ1835+325 01 00 48 18.1 -61.3 6.4 49.4 -6 185 No stop 16 29 20 --- 01 04 49 17.5 -60.7 6.5 49.0 234 246 16 25 21 16 29 20 J1848+3219 01 04 49 19.1 -63.1 6.3 50.0 -6 246 No stop 16 31 20 =1846+322 01 06 49 18.7 -62.8 6.3 49.8 114 277 16 29 21 16 31 20 LSRJ1835+325 01 06 49 17.1 -60.4 6.5 48.8 -6 277 No stop 16 35 20 --- 01 10 50 16.5 -59.8 6.6 48.5 234 338 16 31 21 16 35 40 J1848+3219 01 11 10 18.0 -62.2 6.4 49.4 14 338 16 35 40 16 37 40 =1846+322 01 13 10 17.7 -61.9 6.4 49.3 120 369 16 35 41 16 37 40 LSRJ1835+325 01 13 10 16.1 -59.5 6.6 48.2 -6 369 No stop 16 41 40 --- 01 17 11 15.5 -58.9 6.7 47.8 234 431 16 37 41 16 41 40 J1848+3219 01 17 11 17.1 -61.3 6.5 48.9 -6 431 No stop 16 43 40 =1846+322 01 19 11 16.8 -61.0 6.5 48.7 114 462 16 41 41 16 43 40 LSRJ1835+325 01 19 11 15.2 -58.6 6.7 47.6 -6 462 No stop 16 47 40 --- 01 23 12 14.6 -58.0 6.8 47.3 234 523 16 43 41 16 48 00 J1848+3219 01 23 32 16.1 -60.4 6.6 48.3 14 523 16 48 00 16 50 00 =1846+322 01 25 32 15.7 -60.1 6.6 48.1 120 554 16 48 01 16 50 00 LSRJ1835+325 01 25 32 14.2 -57.7 6.8 47.0 -6 554 No stop 16 54 00 --- 01 29 33 13.6 -57.1 6.9 46.6 234 615 16 50 01 16 54 00 J1848+3219 01 29 33 15.1 -59.5 6.7 47.7 -6 615 No stop 16 56 00 =1846+322 01 31 33 14.8 -59.2 6.7 47.6 114 646 16 54 01 16 56 00 LSRJ1835+325 01 31 33 13.3 -56.8 6.9 46.4 -6 646 No stop 17 00 00 --- 01 35 34 12.7 -56.2 7.0 46.0 234 708 16 56 01 Schedule for URUMQI (Code Ur ) Page 3 LSR J1835 global observations 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 ---------------------------------------------------------------------------------------- --- Thu 2 Nov 2023 Day 306 --- 17 00 20 J1848+3219 01 35 54 14.1 -58.6 6.8 47.1 14 708 17 00 20 17 02 20 =1846+322 01 37 54 13.8 -58.3 6.8 46.9 120 738 17 00 21 17 02 20 LSRJ1835+325 01 37 54 12.3 -55.9 7.0 45.8 -6 738 No stop 17 04 20 --- 01 39 54 12.0 -55.6 7.1 45.5 114 769 17 02 21 17 04 20 J1848+3219 01 39 54 13.5 -58.0 6.8 46.7 -6 769 No stop 17 06 20 =1846+322 01 41 55 13.2 -57.7 6.9 46.5 114 800 17 04 21 17 13 50 LSRJ1835+325 01 49 26 10.6 -54.1 7.2 44.5 444 800 17 13 50 17 18 50 --- 01 54 27 9.9 -53.4 7.3 44.0 300 877 17 13 51 17 18 50 J1848+3219 01 54 27 11.3 -55.8 7.1 45.3 -6 877 No stop 17 19 50 =1846+322 01 55 27 11.2 -55.6 7.1 45.2 54 892 17 18 51 17 19 50 LSRJ1835+325 01 55 27 9.8 -53.2 7.3 43.9 -6 892 No stop 17 22 50 --- 01 58 27 9.3 -52.7 7.4 43.5 174 938 17 19 51 17 23 10 J1848+3219 01 58 47 10.7 -55.1 7.2 44.8 14 938 17 23 10 17 24 10 =1846+322 01 59 48 10.5 -55.0 7.2 44.7 60 954 17 23 11 17 24 10 LSRJ1835+325 01 59 48 9.1 -52.5 7.4 43.4 -6 954 No stop 17 28 10 --- 02 03 48 8.5 -51.9 7.5 42.9 234 1015 17 24 11 17 28 10 J1848+3219 02 03 48 9.9 -54.4 7.2 44.3 -6 1015 No stop 17 30 10 =1846+322 02 05 49 9.6 -54.0 7.3 44.1 114 1046 17 28 11 17 30 10 LSRJ1835+325 02 05 49 8.3 -51.6 7.5 42.7 -6 1046 No stop 17 34 10 --- 02 09 49 7.7 -51.0 7.6 42.3 234 1108 17 30 11 17 34 30 J1848+3219 02 10 09 9.0 -53.4 7.3 43.6 14 1108 17 34 30 17 36 30 =1846+322 02 12 10 8.7 -53.1 7.4 43.4 120 1138 17 34 31 17 40 30 J1848+3219 02 16 10 8.1 -52.4 7.4 42.9 238 1138 17 40 30 17 42 30 =1846+322 02 18 11 7.8 -52.1 7.5 42.7 120 1169 17 40 31 21 52 00 3C286 06 28 22 10.1 57.4 -7.1 -45.1 14903 1169 21 52 00 21 55 00 --- 06 31 22 10.6 57.9 -7.0 -45.4 180 1215 21 52 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess323.C4096glob --- 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: 19 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: 19 Setup file default. Used with PCAL = off LO sum= 4804.00 4804.00 4804.00 4804.00 4868.00 4868.00 4868.00 4868.00 4932.00 4932.00 4932.00 4932.00 4996.00 4996.00 4996.00 4996.00 BBC fr= 184.00 184.00 184.00 184.00 248.00 248.00 248.00 248.00 312.00 312.00 312.00 312.00 376.00 376.00 376.00 376.00 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: 19 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) * LSRJ1835+325 18 33 46.939944 * 18 35 37.880123 18 36 29.447318 0.00 32 57 22.10206 * 32 59 53.31610 33 01 13.54290 0.00 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 12.714019 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 23 14.64827 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 observations. * OQ208 14 04 45.615156 * 14 07 00.394415 14 08 02.948680 0.24 J1407+2827 28 41 29.23515 * 28 27 14.69019 28 20 31.07746 0.35 1404+286 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1407+28 GSFC 2016a X/S astro solution, 68278 observations. * 1830+285 18 30 52.379792 * 18 32 50.185623 18 33 45.042077 0.03 J1832+2833 28 31 17.07914 * 28 33 35.95525 28 34 49.60151 0.04 J1832+28 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 1329 observations. 1846+322 18 46 29.612030 * 18 48 22.088573 18 49 14.443362 0.00 * J1848+3219 32 15 36.66044 * 32 19 02.60384 32 20 49.03497 0.00 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 38727 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 LSRJ1835+32sess323.C4096glob 1 2 3 4 5 7 9 19 20 3.417 449.163 3C286 sess323.C4096glob 1 2 3 4 5 7 9 19 0.167 15.084 OQ208 sess323.C4096glob 1 2 3 4 5 7 9 0.106 16.150 1830+285 sess323.C4096glob 1 2 3 4 5 7 9 19 20 0.233 25.354 J1848+3219 sess323.C4096glob 1 2 3 4 5 7 9 19 20 1.767 216.171 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) LSRJ1835+325 75.6 3C286 47.4 OQ208 43.5 1830+285 73.0 J1848+3219 77.7 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