COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: Probing blazar dynamics in an extreme case of jet realignment Exp. Code: RSB02B Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Gabriele Bruni Address: INAF-IAPS via del Fosso del Cavaliere, 100 00133 - Rome Italy Phone: +39 06 4548 8456 EMAIL: gabriele.bruni@inaf.it Fax: --- Phone during observation: +39 06 4548 8456 Observing mode: Phase-referencing of a source at 3.6cm Notes: Schedule for ZELENCHK (Code Zc ) Page 2 Probing blazar dynamics in an extreme case of jet realignment 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 23 Oct 2019 Day 296 --- Next scan frequencies: 8319.49 8319.49 8319.49 8319.49 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 8511.49 8511.49 8511.49 8511.49 Next BBC frequencies: 239.49 239.49 239.49 239.49 303.49 303.49 303.49 303.49 367.49 367.49 367.49 367.49 431.49 431.49 431.49 431.49 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 20 30 00 PBC2333 01 24 08 18.1 566.2 1.8 20.4 0 0 20 30 00 20 35 00 --- 01 29 09 17.7 567.4 1.9 21.2 300 77 20 30 01 20 35 00 PBC2333 01 29 09 17.7 567.4 1.9 21.2 -5 77 No stop 20 40 00 --- 01 34 10 17.3 568.5 2.0 22.1 295 154 20 35 01 20 40 30 PBC2333 01 34 40 17.2 568.6 2.0 22.2 24 154 20 40 30 20 45 30 --- 01 39 41 16.8 569.7 2.1 23.0 300 231 20 40 31 20 45 30 PBC2333 01 39 41 16.8 569.7 2.1 23.0 -5 231 No stop 20 50 30 --- 01 44 41 16.3 570.8 2.2 23.8 295 308 20 45 31 20 50 30 PBC2333 01 44 41 16.3 570.8 2.2 23.8 -5 308 No stop 20 55 30 --- 01 49 42 15.8 571.9 2.2 24.6 295 385 20 50 31 20 56 00 PBC2333 01 50 12 15.8 572.0 2.3 24.7 24 385 20 56 00 21 01 00 --- 01 55 13 15.3 573.1 2.3 25.5 300 462 20 56 01 21 01 00 PBC2333 01 55 13 15.3 573.1 2.3 25.5 -5 462 No stop 21 06 00 --- 02 00 14 14.8 574.1 2.4 26.2 295 538 21 01 01 21 06 00 PBC2333 02 00 14 14.8 574.1 2.4 26.2 -5 538 No stop 21 11 00 --- 02 05 15 14.3 575.2 2.5 27.0 295 615 21 06 01 21 11 30 PBC2333 02 05 45 14.2 575.3 2.5 27.1 24 615 21 11 30 21 16 30 --- 02 10 46 13.7 576.4 2.6 27.9 300 692 21 11 31 21 16 30 PBC2333 02 10 46 13.7 576.4 2.6 27.9 -5 692 No stop 21 21 30 --- 02 15 47 13.2 577.4 2.7 28.6 295 769 21 16 31 21 21 30 PBC2333 02 15 47 13.2 577.4 2.7 28.6 -5 769 No stop 21 26 30 --- 02 20 47 12.6 578.4 2.8 29.3 295 846 21 21 31 21 27 00 PBC2333 02 21 17 12.6 578.5 2.8 29.4 24 846 21 27 00 21 32 00 --- 02 26 18 12.0 579.6 2.9 30.1 300 923 21 27 01 21 32 00 PBC2333 02 26 18 12.0 579.6 2.9 30.1 -5 923 No stop 21 37 00 --- 02 31 19 11.4 580.6 2.9 30.8 295 1000 21 32 01 Schedule for ZELENCHK (Code Zc ) Page 3 Probing blazar dynamics in an extreme case of jet realignment 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 23 Oct 2019 Day 296 --- 21 37 00 PBC2333 02 31 19 11.4 580.6 2.9 30.8 -5 1000 No stop 21 42 00 --- 02 36 20 10.8 581.6 3.0 31.5 295 1077 21 37 01 21 42 30 PBC2333 02 36 50 10.8 581.7 3.0 31.6 24 1077 21 42 30 21 47 30 --- 02 41 51 10.1 582.7 3.1 32.3 300 1154 21 42 31 21 47 30 PBC2333 02 41 51 10.1 582.7 3.1 32.3 -5 1154 No stop 21 54 07 --- 02 48 29 9.3 584.0 3.2 D 33.2 0 1256 21 47 31 21 57 00 3C454.3 02 51 22 33.3 620.4 3.9 47.9 110 1256 21 57 00 22 00 00 --- 02 54 22 32.8 621.0 4.0 48.0 180 1302 21 57 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess319.X2048 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq.dat: kvzr_x Added by Des Small, 24 February 2012 Setup group: 1 Station: ZELENCHK Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 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 = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 8 Setup file default. Used with PCAL = off LO sum= 8319.49 8319.49 8319.49 8319.49 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 8511.49 8511.49 8511.49 8511.49 BBC fr= 239.49 239.49 239.49 239.49 303.49 303.49 303.49 303.49 367.49 367.49 367.49 367.49 431.49 431.49 431.49 431.49 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: 8 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) * PBC2333 23 31 17.940448 * 23 33 55.237800 23 34 57.355889 0.00 -24 00 15.79862 *-23 43 40.65802 -23 37 11.62125 0.00 From catalog imbedded in main SCHED input file. * 3C454.3 22 51 29.519739 * 22 53 57.747939 22 54 56.325043 0.65 J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 18.81592 0.73 2251+158 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 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 PBC2333 sess319.X2048 1 2 3 4 5 6 7 8 1.360 46.844 3C454.3 sess319.X2048 1 2 3 4 5 6 7 8 0.050 1.800 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) PBC2333 131.4 3C454.3 136.8 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