COVER INFORMATION Station: DSS63 (Code Ro ) Experiment: A second active nucleus in Cygnus A? Exp. Code: EB060B Schedule Version: 3.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Uwe Bach Address: Max-Planck-Institut fuer Radioastronomie Auf dem Huegel 69 53121 Bonn Germany Phone: 0049-2257-301-168 EMAIL: ubach@mpifr-bonn.mpg.de Fax: 0049-2257-301-106 Phone during observation: 0049-2257-301-155 Observing mode: Notes: Use 2013+370 as fring tracer and BL Lac as 2nd calibrators COVER LETTER: This is the schedule for epoch B of EB060 at 18cm. It involves 14 antennas Jb2, Ef, Wb, Mc, On85, T6, Ur, Tr, Sv, Zc, Bd, Hh, Ir, and Ro and runs at a standard 1 Gbps continuum mode. Fringe finders are 2013+370 and BL Lac. Schedule for DSS63 (Code Ro ) Page 2 A second active nucleus in Cygnus A? 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 ---------------------------------------------------------------------------------------- --- Sat 27 May 2017 Day 147 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 230.49 230.49 230.49 230.49 262.49 262.49 262.49 262.49 294.49 294.49 294.49 294.49 326.49 326.49 326.49 326.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 22 30 00 CYG-A 14 35 40 30.8 420.6 -5.4 -61.2 0 0 22 30 00 22 40 00 --- 14 45 42 32.5 421.7 -5.2 -62.2 600 77 22 30 04 22 40 30 CYG-A 14 46 12 32.6 421.7 -5.2 -62.3 20 77 22 40 30 22 50 30 --- 14 56 14 34.3 422.8 -5.1 -63.4 600 154 22 40 34 22 51 30 2013+370 14 57 14 30.0 424.8 -5.3 -59.9 32 154 22 51 30 22 56 30 --- 15 02 15 30.9 425.4 -5.2 -60.4 300 192 22 51 34 22 57 30 CYG-A 15 03 15 35.5 423.5 -4.9 -64.1 31 192 22 57 30 23 07 30 --- 15 13 17 37.2 424.5 -4.8 -65.1 600 269 22 57 34 23 08 00 CYG-A 15 13 47 37.3 424.5 -4.8 -65.2 20 269 23 08 00 23 18 00 --- 15 23 48 39.0 425.5 -4.6 -66.2 600 346 23 08 04 23 18 30 CYG-A 15 24 18 39.1 425.6 -4.6 -66.3 20 346 23 18 30 23 28 30 --- 15 34 20 40.8 426.6 -4.4 -67.3 600 422 23 18 34 23 29 00 CYG-A 15 34 50 40.9 426.6 -4.4 -67.3 20 422 23 29 00 23 39 00 --- 15 44 52 42.7 427.6 -4.3 -68.3 600 499 23 29 04 23 39 30 CYG-A 15 45 22 42.8 427.6 -4.2 -68.4 20 499 23 39 30 23 49 30 --- 15 55 23 44.5 428.6 -4.1 -69.3 600 576 23 39 34 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess217.L1024 Matching groups in /home/guest/rmc/SCHED/sched11.4/catalogs/freq_RDBE.dat: ro18cm LO from Harbison, e-mail 20/03/97. other values guesses ****** Only 200.00 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 5 Station: DSS63 Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 0.50 Disk used to record data. 1st LO= 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 1380.00 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 = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= L L U U L L U U L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on these setups were used. Frequency Set: 14 Setup file default. Used with PCAL = off LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 230.49 230.49 230.49 230.49 262.49 262.49 262.49 262.49 294.49 294.49 294.49 294.49 326.49 326.49 326.49 326.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 14 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) CYGNUS-A 19 57 44.440804 * 19 59 28.356482 20 00 05.412198 0.80 J1959+4044 40 35 46.36249 * 40 44 02.09630 40 46 48.72390 0.53 * CYG-A /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc.2015feb J1959+40 GSFC 2015a astro solution, unpublished 27 observations. 1957+405 1957+404 * 2013+370 20 13 37.014511 * 20 15 28.729797 20 16 08.323309 0.13 J2015+3710 37 01 44.45895 * 37 10 59.51482 37 14 06.42135 0.18 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc.2015feb GSFC 2015a astro solution, unpublished 131 observations. VR422201 22 00 39.362505 * 22 02 43.291372 22 03 26.639813 0.00 J2202+4216 42 02 08.59077 * 42 16 39.97990 42 21 29.20552 0.00 * BLLAC /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc.2015feb 2200+420 GSFC 2015a astro solution, unpublished 51226 observations. J2202+42 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 CYG-A sess217.L1024 1 2 3 4 5 6 7 8 9 12 13 14 6.933 476.482 2013+370 sess217.L1024 1 2 3 4 5 6 7 8 9 12 13 14 0.250 19.583 BLLAC sess217.L1024 1 2 3 4 5 6 7 8 9 12 13 0.167 12.000 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) CYG-A 99.6 2013+370 99.3 BLLAC 78.7 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