COVER INFORMATION Station: VLBA_MK (Code Mk ) 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 VLBA_MK (Code Mk ) 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: 4612.00 4612.00 4740.00 4740.00 4868.00 4868.00 4996.00 4996.00 Next BBC frequencies: 512.00 512.00 640.00 640.00 768.00 768.00 896.00 896.00 Next scan bandwidths: 128.00 128.00 128.00 128.00 128.00 128.00 128.00 128.00 16 00 00 OQ208 08 24 52 12.8 64.2 -5.7 -74.2 0 0 16 00 00 16 06 20 --- 08 31 13 14.1 64.6 -5.6 -74.9 380 196 16 00 01 16 06 50 3C286 08 31 43 22.3 64.3 -5.0 -79.4 5 196 16 06 50 16 09 50 --- 08 34 43 23.0 64.4 -5.0 -79.7 180 289 16 06 51 17 07 50 3C286 09 32 53 35.4 66.2 -4.0 -86.3 3473 289 17 07 50 17 11 50 --- 09 36 53 36.3 66.3 -3.9 -86.7 240 412 17 07 51 19 55 10 LSRJ1835+325 12 20 40 7.5 57.5 -6.3 -71.2 9720 412 19 55 10 19 59 10 --- 12 24 41 8.3 57.8 -6.2 -71.7 240 536 19 55 11 20 01 30 LSRJ1835+325 12 27 01 8.7 58.0 -6.2 -72.0 134 536 20 01 30 20 05 30 --- 12 31 02 9.5 58.2 -6.1 -72.5 240 660 20 01 31 20 07 30 LSRJ1835+325 12 33 02 9.9 58.3 -6.1 -72.8 114 660 20 07 30 20 11 30 --- 12 37 03 10.8 58.6 -6.0 -73.3 240 783 20 07 31 20 11 50 J1848+3219 12 37 23 8.1 58.4 -6.2 -71.6 6 783 20 11 50 20 13 50 =1846+322 12 39 23 8.5 58.6 -6.2 -71.9 120 845 20 11 51 20 13 50 LSRJ1835+325 12 39 23 11.2 58.7 -6.0 -73.6 -14 845 20 14 04 20 17 50 --- 12 43 24 12.0 59.0 -5.9 -74.1 226 962 20 13 51 20 17 50 J1848+3219 12 43 24 9.3 58.8 -6.1 -72.4 -14 962 20 18 04 20 19 50 =1846+322 12 45 24 9.7 59.0 -6.1 -72.6 106 1016 20 17 51 20 19 50 LSRJ1835+325 12 45 24 12.4 59.1 -5.9 -74.3 -14 1016 20 20 04 20 23 50 --- 12 49 25 13.2 59.3 -5.8 -74.8 226 1133 20 19 51 20 24 10 J1848+3219 12 49 45 10.5 59.2 -6.0 -73.1 6 1133 20 24 10 20 26 10 =1846+322 12 51 45 11.0 59.4 -6.0 -73.4 120 1194 20 24 11 20 26 10 LSRJ1835+325 12 51 45 13.7 59.4 -5.7 -75.1 -14 1194 20 26 24 20 30 10 --- 12 55 46 14.5 59.7 -5.7 -75.6 226 1311 20 26 11 20 30 10 J1848+3219 12 55 46 11.8 59.6 -5.9 -73.9 -14 1311 20 30 24 20 32 10 =1846+322 12 57 46 12.2 59.7 -5.9 -74.1 106 1365 20 30 11 20 32 10 LSRJ1835+325 12 57 46 14.9 59.8 -5.6 -75.8 -14 1365 20 32 24 20 36 10 --- 13 01 47 15.8 60.0 -5.6 -76.3 226 1482 20 32 11 Schedule for VLBA_MK (Code Mk ) 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 --- 20 36 30 J1848+3219 13 02 07 13.1 60.0 -5.8 -74.6 6 1482 20 36 30 20 38 30 =1846+322 13 04 07 13.5 60.1 -5.8 -74.9 120 1544 20 36 31 20 38 30 LSRJ1835+325 13 04 07 16.2 60.1 -5.5 -76.6 -14 1544 20 38 44 20 42 30 --- 13 08 08 17.0 60.3 -5.5 -77.1 226 1660 20 38 31 20 42 30 J1848+3219 13 08 08 14.3 60.3 -5.7 -75.4 -14 1660 20 42 44 20 44 30 =1846+322 13 10 08 14.7 60.4 -5.7 -75.6 106 1715 20 42 31 20 44 30 LSRJ1835+325 13 10 08 17.5 60.4 -5.4 -77.3 -14 1715 20 44 44 20 48 30 --- 13 14 09 18.3 60.6 -5.4 -77.8 226 1831 20 44 31 20 48 50 J1848+3219 13 14 29 15.6 60.7 -5.6 -76.1 6 1831 20 48 50 20 50 50 =1846+322 13 16 29 16.0 60.8 -5.5 -76.4 120 1893 20 48 51 20 50 50 LSRJ1835+325 13 16 29 18.8 60.7 -5.3 -78.1 -14 1893 20 51 04 20 54 50 --- 13 20 30 19.6 60.9 -5.3 -78.6 226 2010 20 50 51 20 54 50 J1848+3219 13 20 30 16.8 61.0 -5.5 -76.9 -14 2010 20 55 04 20 56 50 =1846+322 13 22 30 17.2 61.1 -5.4 -77.1 106 2064 20 54 51 20 56 50 LSRJ1835+325 13 22 30 20.0 61.0 -5.2 -78.8 -14 2064 20 57 04 21 00 50 --- 13 26 31 20.8 61.1 -5.2 -79.3 226 2181 20 56 51 21 01 10 J1848+3219 13 26 51 18.1 61.3 -5.4 -77.6 6 2181 21 01 10 21 03 10 =1846+322 13 28 51 18.5 61.4 -5.3 -77.8 120 2242 21 01 11 21 03 10 LSRJ1835+325 13 28 51 21.3 61.2 -5.1 -79.6 -14 2242 21 03 24 21 07 10 --- 13 32 52 22.1 61.4 -5.1 -80.1 226 2359 21 03 11 21 07 10 J1848+3219 13 32 52 19.4 61.6 -5.3 -78.3 -14 2359 21 07 24 21 09 10 =1846+322 13 34 52 19.8 61.7 -5.2 -78.6 106 2414 21 07 11 21 09 10 LSRJ1835+325 13 34 52 22.5 61.5 -5.0 -80.3 -14 2414 21 09 24 21 13 10 --- 13 38 53 23.4 61.6 -5.0 -80.8 226 2530 21 09 11 21 13 30 J1848+3219 13 39 13 20.7 61.8 -5.2 -79.1 6 2530 21 13 30 21 15 30 =1846+322 13 41 14 21.1 61.9 -5.1 -79.3 120 2592 21 13 31 21 15 30 LSRJ1835+325 13 41 14 23.9 61.7 -4.9 -81.1 -14 2592 21 15 44 21 19 30 --- 13 45 14 24.7 61.8 -4.9 -81.6 226 2708 21 15 31 21 19 30 J1848+3219 13 45 14 21.9 62.1 -5.1 -79.8 -14 2708 21 19 44 21 21 30 =1846+322 13 47 15 22.4 62.2 -5.0 -80.0 106 2763 21 19 31 Schedule for VLBA_MK (Code Mk ) Page 4 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 --- 21 21 30 LSRJ1835+325 13 47 15 25.1 61.9 -4.8 -81.9 -14 2763 21 21 44 21 25 30 --- 13 51 15 25.9 62.0 -4.8 -82.3 226 2879 21 21 31 21 25 50 J1848+3219 13 51 35 23.3 62.3 -5.0 -80.5 6 2879 21 25 50 21 27 50 =1846+322 13 53 36 23.7 62.4 -4.9 -80.8 120 2941 21 25 51 21 27 50 LSRJ1835+325 13 53 36 26.4 62.1 -4.7 -82.6 -14 2941 21 28 04 21 31 50 --- 13 57 36 27.3 62.2 -4.6 -83.1 226 3058 21 27 51 21 31 50 J1848+3219 13 57 36 24.5 62.6 -4.9 -81.3 -14 3058 21 32 04 21 33 50 =1846+322 13 59 37 24.9 62.6 -4.8 -81.5 106 3112 21 31 51 21 33 50 LSRJ1835+325 13 59 37 27.7 62.3 -4.6 -83.4 -14 3112 21 34 04 21 37 50 --- 14 03 37 28.5 62.4 -4.5 -83.9 226 3229 21 33 51 21 38 10 J1848+3219 14 03 57 25.8 62.8 -4.8 -82.0 6 3229 21 38 10 21 40 10 =1846+322 14 05 58 26.3 62.8 -4.7 -82.3 120 3291 21 38 11 21 40 10 LSRJ1835+325 14 05 58 29.0 62.4 -4.5 -84.2 -14 3291 21 40 24 21 43 10 --- 14 08 58 29.6 62.5 -4.5 -84.5 166 3376 21 40 11 21 43 10 J1848+3219 14 08 58 26.9 62.9 -4.7 -82.6 -14 3376 21 43 24 21 45 10 =1846+322 14 10 58 27.3 63.0 -4.6 -82.9 106 3431 21 43 11 21 45 10 LSRJ1835+325 14 10 58 30.0 62.6 -4.4 -84.8 -14 3431 21 45 24 21 48 10 --- 14 13 59 30.7 62.6 -4.4 -85.2 166 3516 21 45 11 21 48 30 J1848+3219 14 14 19 28.0 63.1 -4.6 -83.3 6 3516 21 48 30 21 50 30 =1846+322 14 16 19 28.4 63.1 -4.5 -83.5 120 3578 21 48 31 21 52 00 3C286 14 17 50 75.2 -42.0 0.8 133.1 -17 3578 21 52 17 21 55 00 --- 14 20 50 74.7 -43.7 0.8 131.1 163 3662 21 52 01 21 56 00 1830+285 14 21 50 32.5 68.1 -4.2 -83.7 -37 3662 21 56 37 22 00 00 --- 14 25 51 33.4 68.2 -4.1 -84.1 203 3767 21 56 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 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: vc_d Setup group: 6 Station: VLBA_MK Total bit rate: 4096 Format: VDIF Bits per sample: 2 Sample rate:256.000 Number of channels: 8 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 Net SB= U U U U U U U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = A C A C A C A C VLBA FE= 6cm omit 6cm omit VLBA Synth= 13.6 4.1 13.6 The following frequency sets based on these setups were used. See the crd files for VLBA legacy system setups and pcal detection details. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 4612.00 4612.00 4740.00 4740.00 4868.00 4868.00 4996.00 4996.00 BBC fr= 512.00 512.00 640.00 640.00 768.00 768.00 896.00 896.00 Bandwd= 128.00 128.00 128.00 128.00 128.00 128.00 128.00 128.00 VLBA legacy crd files using 4 channels based on RDBE channels: 3 4 5 6 CRD fr= 696.00 696.00 824.00 824.00 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 9 10 11 12 13 14 15 16 17 18 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) * 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