COVER INFORMATION Station: KVNTN (Code Kt ) Experiment: A second active nucleus in Cygnus A? Exp. Code: EB060A Schedule Version: 1.00 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 A of EB060 at 1.3cm. It involves 15 antennas Jb2, Ef, Mc, Nt, On60, Tr, Ys, Sv, Zc, Bd, Hh, Mh, Kt, Ky, and Ku and runs at a standard 1 Gbps continuum mode. Gaps between scans are adjusted to allow time for Tsys measurements on source and some pointing time every 1.5 hours, because the observation happen during sunrise at Effelsberg. Fringe finders are 2013+370 and BL Lac. Schedule for KVNTN (Code Kt ) 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 ---------------------------------------------------------------------------------------- --- Thu 9 Mar 2017 Day 68 --- Next scan frequencies: 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 Next BBC frequencies: 8937.49 8937.49 8937.49 8937.49 8969.49 8969.49 8969.49 8969.49 9001.49 9001.49 9001.49 9001.49 9033.49 9033.49 9033.49 9033.49 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 04 00 00 CYG-A 23 34 00 47.3 -63.9 3.6 82.3 0 0 04 00 00 04 10 00 --- 23 44 02 45.4 -63.5 3.7 81.0 600 77 04 00 01 04 10 30 CYG-A 23 44 32 45.3 -63.4 3.7 80.9 28 77 04 10 30 04 20 30 --- 23 54 33 43.5 -63.0 3.9 79.6 600 154 04 10 31 04 21 30 2013+370 23 55 34 45.7 -68.7 3.7 78.0 55 154 04 21 30 04 26 30 --- 00 00 34 44.7 -68.4 3.7 77.4 300 192 04 21 31 04 27 30 CYG-A 00 01 35 42.2 -62.6 4.0 78.7 55 192 04 27 30 04 37 30 --- 00 11 36 40.3 -62.1 4.2 77.4 600 269 04 27 31 04 38 00 CYG-A 00 12 06 40.2 -62.1 4.2 77.3 28 269 04 38 00 04 48 00 --- 00 22 08 38.4 -61.5 4.4 76.0 600 346 04 38 01 04 48 30 CYG-A 00 22 38 38.3 -61.5 4.4 76.0 28 346 04 48 30 04 58 30 --- 00 32 40 36.4 -60.9 4.5 74.7 600 423 04 48 31 04 59 00 CYG-A 00 33 10 36.4 -60.9 4.6 74.6 28 423 04 59 00 05 09 00 --- 00 43 11 34.5 -60.2 4.7 73.4 600 500 04 59 01 05 09 30 CYG-A 00 43 41 34.4 -60.2 4.7 73.3 28 500 05 09 30 05 19 30 --- 00 53 43 32.6 -59.5 4.9 72.0 600 577 05 09 31 05 20 00 CYG-A 00 54 13 32.5 -59.5 4.9 72.0 28 577 05 20 00 05 30 00 --- 01 04 15 30.7 -58.8 5.1 70.7 600 654 05 20 01 ---------- 5-min gap for pointing ---------- 05 36 45 BLLAC 01 11 01 52.4 -62.1 3.1 88.1 394 654 05 36 45 05 41 45 --- 01 16 02 51.4 -62.0 3.2 87.3 300 692 05 36 46 05 43 30 CYG-A 01 17 47 28.3 -57.7 5.3 69.0 94 692 05 43 30 05 53 30 --- 01 27 49 26.6 -57.0 5.5 67.7 600 769 05 43 31 05 54 00 CYG-A 01 28 19 26.5 -56.9 5.5 67.7 28 769 05 54 00 06 04 00 --- 01 38 20 24.7 -56.1 5.6 66.4 600 846 05 54 01 Schedule for KVNTN (Code Kt ) Page 3 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 ---------------------------------------------------------------------------------------- --- Thu 9 Mar 2017 Day 68 --- 06 04 30 CYG-A 01 38 50 24.6 -56.1 5.6 66.3 28 846 06 04 30 06 14 30 --- 01 48 52 22.9 -55.2 5.8 65.0 600 923 06 04 31 06 15 00 CYG-A 01 49 22 22.8 -55.2 5.8 65.0 28 923 06 15 00 06 25 00 --- 01 59 24 21.1 -54.3 6.0 63.6 600 1000 06 15 01 06 25 30 CYG-A 01 59 54 21.0 -54.2 6.0 63.6 28 1000 06 25 30 06 35 30 --- 02 09 56 19.3 -53.3 6.2 62.3 600 1077 06 25 31 06 36 00 CYG-A 02 10 26 19.3 -53.3 6.2 62.2 28 1077 06 36 00 06 46 00 --- 02 20 27 17.6 -52.3 6.3 60.9 600 1154 06 36 01 ---------- 6-min gap for pointing ---------- 06 52 00 2013+370 02 26 28 17.6 -56.5 6.2 61.2 355 1154 06 52 00 06 57 00 --- 02 31 29 16.7 -56.0 6.3 60.5 300 1192 06 52 01 06 58 00 CYG-A 02 32 29 15.6 -51.1 6.5 59.2 55 1192 06 58 00 07 08 00 --- 02 42 31 14.0 -50.1 6.7 57.9 600 1269 06 58 01 07 08 30 CYG-A 02 43 01 13.9 -50.0 6.7 57.8 28 1269 07 08 30 07 18 30 --- 02 53 03 12.3 -49.0 6.9 56.4 600 1346 07 08 31 07 19 00 CYG-A 02 53 33 12.2 -48.9 6.9 56.3 28 1346 07 19 00 07 29 00 --- 03 03 34 10.7 -47.8 7.1 54.9 600 1423 07 19 01 07 29 30 CYG-A 03 04 04 10.6 -47.8 7.1 54.8 28 1423 07 29 30 07 39 30 --- 03 14 06 9.1 -46.6 7.2 53.4 600 1500 07 29 31 07 40 00 CYG-A 03 14 36 9.0 -46.6 7.2 53.3 28 1500 07 40 00 07 50 00 --- 03 24 38 7.5 -45.4 7.4 51.8 600 1577 07 40 01 07 50 30 CYG-A 03 25 08 7.4 -45.4 7.4 51.8 28 1577 07 50 30 08 00 30 --- 03 35 10 5.9 -44.2 7.6 50.3 600 1654 07 50 31 ---------- 5-min gap for pointing ---------- 08 07 10 BLLAC 03 41 51 25.3 -54.5 5.6 67.0 390 1654 08 07 10 08 12 10 --- 03 46 51 24.5 -54.1 5.7 66.4 300 1692 08 07 11 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess117.K1024 --- 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: 12 Station: KVNTN Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 13250.00 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 2 1 2 1 2 1 2 1 2 1 2 1 BBC SB= L L U U L L U U L L U U L L U U IF = D C D C D C D C D C D C D C D C The following frequency sets based on these setups were used. Frequency Set: 13 Setup file default. Used with PCAL = off LO sum= 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 BBC fr= 8937.49 8937.49 8937.49 8937.49 8969.49 8969.49 8969.49 8969.49 9001.49 9001.49 9001.49 9001.49 9033.49 9033.49 9033.49 9033.49 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: 13 14 15 Track assignments are: track1= 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 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 02.828353 0.80 J1959+4044 40 35 46.36249 * 40 44 02.09630 40 46 44.12306 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 05.839219 0.13 J2015+3710 37 01 44.45895 * 37 10 59.51482 37 14 02.44324 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 24.328092 0.00 J2202+4216 42 02 08.59077 * 42 16 39.97990 42 21 32.31957 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 sess117.K1024 1 2 3 4 5 6 7 8 11 12 13 8.067 575.499 2013+370 sess117.K1024 1 2 3 4 5 6 7 8 11 12 13 0.500 34.833 BLLAC sess117.K1024 1 2 3 4 5 6 7 8 11 12 13 0.167 15.167 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 64.1 2013+370 59.5 BLLAC 49.8 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