COVER INFORMATION Station: TIANMA65 (Code T6 ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113E Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: F. Panessa Address: INAF-IAPS via del Fosso del Cavaliere, 100 00133 - Rome Italy Phone: +39 06 4548 8456 EMAIL: francesca.panessa@iaps.inaf.it Fax: --- Phone during observation: +39 06 4548 8456 Observing mode: Phase-referencing of a source at 1.3cm Notes: Target: NGC4151 Phase calibrator : J1209+4119 D-terms calibrator : -- Fringe finder : 3C286 Schedule for TIANMA65 (Code T6 ) Page 2 The variable VLBI core of NGC 4151 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 ---------------------------------------------------------------------------------------- --- Mon 10 Jun 2019 Day 161 --- Next scan frequencies: 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 Next BBC frequencies: 559.49 559.49 559.49 559.49 623.49 623.49 623.49 623.49 687.49 687.49 687.49 687.49 751.49 751.49 751.49 751.49 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 17 00 00 3C286 18 19 36 29.4 -70.2 4.8 69.1 0 0 17 00 00 17 02 00 --- 18 21 36 29.0 -70.0 4.8 68.9 120 31 17 00 01 17 04 20 J1209+4119 18 23 56 17.6 -52.0 6.2 63.7 93 31 17 04 20 17 06 20 =1206+416 18 25 57 17.2 -51.8 6.3 63.5 120 62 17 04 21 17 06 20 NGC4151 18 25 57 16.6 -53.7 6.2 63.1 -6 62 No stop 17 10 20 --- 18 29 57 15.9 -53.3 6.3 62.6 234 124 17 06 21 17 10 20 J1209+4119 18 29 57 16.6 -51.4 6.3 62.9 -6 124 No stop 17 12 20 =1206+416 18 31 58 16.2 -51.3 6.4 62.6 114 155 17 10 21 17 12 20 NGC4151 18 31 58 15.5 -53.1 6.3 62.3 -6 155 No stop 17 16 20 --- 18 35 58 14.9 -52.8 6.4 61.8 234 216 17 12 21 17 17 00 J1209+4119 18 36 38 15.5 -50.8 6.4 62.0 34 216 17 17 00 17 19 00 =1206+416 18 38 39 15.1 -50.6 6.5 61.7 120 247 17 17 01 17 19 00 NGC4151 18 38 39 14.4 -52.5 6.5 61.4 -6 247 No stop 17 23 00 --- 18 42 39 13.7 -52.1 6.5 60.9 234 309 17 19 01 17 23 00 J1209+4119 18 42 39 14.5 -50.3 6.5 61.1 -6 309 No stop 17 25 00 =1206+416 18 44 40 14.1 -50.1 6.6 60.8 114 340 17 23 01 17 25 00 NGC4151 18 44 40 13.4 -51.9 6.6 60.6 -6 340 No stop 17 29 00 --- 18 48 40 12.7 -51.5 6.6 60.0 234 402 17 25 01 17 29 40 J1209+4119 18 49 20 13.4 -49.6 6.6 60.2 34 402 17 29 40 17 31 40 =1206+416 18 51 21 13.0 -49.4 6.7 59.9 120 433 17 29 41 17 31 40 NGC4151 18 51 21 12.3 -51.3 6.7 59.7 -6 433 No stop 17 35 40 --- 18 55 21 11.6 -50.9 6.7 59.1 234 495 17 31 41 17 35 40 J1209+4119 18 55 21 12.4 -49.0 6.8 59.3 -6 495 No stop 17 37 40 =1206+416 18 57 22 12.1 -48.9 6.8 59.0 114 526 17 35 41 17 37 40 NGC4151 18 57 22 11.3 -50.6 6.8 58.8 -6 526 No stop 17 41 40 --- 19 01 22 10.6 -50.2 6.8 58.3 234 587 17 37 41 Schedule for TIANMA65 (Code T6 ) Page 3 The variable VLBI core of NGC 4151 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 ---------------------------------------------------------------------------------------- --- Mon 10 Jun 2019 Day 161 --- 17 42 20 J1209+4119 19 02 03 11.3 -48.4 6.9 58.3 34 587 17 42 20 17 44 20 =1206+416 19 04 03 11.0 -48.2 6.9 58.1 120 618 17 42 21 17 44 20 NGC4151 19 04 03 10.2 -50.0 6.9 57.9 -6 618 No stop 17 48 20 --- 19 08 04 9.5 -49.5 6.9 57.3 234 680 17 44 21 17 48 20 J1209+4119 19 08 04 10.4 -47.8 7.0 57.5 -6 680 No stop 17 50 20 =1206+416 19 10 04 10.0 -47.6 7.0 57.2 114 711 17 48 21 17 50 20 NGC4151 19 10 04 9.2 -49.3 7.0 57.1 -6 711 No stop 17 54 20 --- 19 14 05 8.5 -48.9 7.0 56.5 234 773 17 50 21 17 55 00 J1209+4119 19 14 45 9.3 -47.1 7.1 56.5 34 773 17 55 00 17 57 00 =1206+416 19 16 45 9.0 -46.9 7.1 56.2 120 804 17 55 01 17 57 00 NGC4151 19 16 45 8.1 -48.6 7.1 56.1 -6 804 No stop 18 01 00 --- 19 20 46 7.5 -48.2 7.2 55.5 234 866 17 57 01 18 01 00 J1209+4119 19 20 46 8.4 -46.4 7.2 55.6 -6 866 No stop 18 03 00 =1206+416 19 22 46 8.1 -46.2 7.2 55.3 114 897 18 01 01 18 03 00 NGC4151 19 22 46 7.1 -47.9 7.2 55.3 -6 897 No stop 18 07 00 --- 19 26 47 6.5 -47.5 7.3 D 54.7 0 958 18 03 01 18 07 40 J1209+4119 19 27 27 7.3 -45.7 7.3 54.6 35 958 18 07 40 18 09 40 =1206+416 19 29 27 7.0 -45.5 7.3 54.3 120 989 18 07 41 18 37 20 3C286 19 57 12 10.4 -60.6 6.4 59.9 1622 989 18 37 20 18 40 00 --- 19 59 52 9.9 -60.3 6.5 59.6 160 1031 18 37 21 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.K2048 --- 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: 14 Station: TIANMA65 Total bit rate: 2048 Format: VDIF 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= 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 21580.00 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: 6 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 BBC fr= 559.49 559.49 559.49 559.49 623.49 623.49 623.49 623.49 687.49 687.49 687.49 687.49 751.49 751.49 751.49 751.49 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: 6 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * NGC4151 12 08 01.055801 * 12 10 32.583400 12 11 30.529205 0.00 39 41 02.10308 * 39 24 21.03100 39 18 09.96813 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 20.765794 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 30.75115 0.16 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 150 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 01.923103 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 48.76043 0.16 1328+307 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 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 NGC4151 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 1.717 158.398 J1209+4119 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.933 90.198 3C286 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.078 11.259 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) NGC4151 85.8 J1209+4119 84.7 3C286 104.4 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