COVER INFORMATION Station: TIANMA65 (Code T6 ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113A 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 3.6cm (1024 Mb/s) 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 ---------------------------------------------------------------------------------------- --- Tue 30 Oct 2018 Day 303 --- Next scan frequencies: 8367.49 8367.49 8367.49 8367.49 8399.49 8399.49 8399.49 8399.49 8431.49 8431.49 8431.49 8431.49 8463.49 8463.49 8463.49 8463.49 Next BBC frequencies: 267.49 267.49 267.49 267.49 299.49 299.49 299.49 299.49 331.49 331.49 331.49 331.49 363.49 363.49 363.49 363.49 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 07 30 00 3C286 18 08 50 31.6 -71.1 4.6 70.0 0 0 07 30 00 07 32 00 --- 18 10 50 31.2 -71.0 4.6 69.8 120 15 07 30 01 07 33 49 J1209+4119 18 12 40 19.5 -52.9 6.0 65.3 61 15 07 33 49 07 34 49 =1206+416 18 13 40 19.3 -52.8 6.1 65.1 60 23 07 33 50 07 35 36 NGC4151 18 14 27 18.6 -54.7 6.0 64.6 41 23 07 35 36 07 40 36 --- 18 19 27 17.7 -54.3 6.1 63.9 300 62 07 35 37 07 41 21 J1209+4119 18 20 13 18.2 -52.3 6.2 64.2 40 62 07 41 21 07 42 21 =1206+416 18 21 13 18.0 -52.2 6.2 64.1 60 69 07 41 22 07 43 08 NGC4151 18 22 00 17.3 -54.0 6.2 63.6 41 69 07 43 08 07 48 08 --- 18 27 01 16.4 -53.6 6.3 62.9 300 108 07 43 09 07 48 54 J1209+4119 18 27 47 16.9 -51.6 6.3 63.2 40 108 07 48 54 07 49 54 =1206+416 18 28 47 16.8 -51.5 6.3 63.1 60 115 07 48 55 07 50 41 NGC4151 18 29 35 15.9 -53.3 6.3 62.6 42 115 07 50 41 07 55 41 --- 18 34 36 15.1 -52.9 6.4 61.9 300 154 07 50 42 07 56 27 J1209+4119 18 35 22 15.7 -50.9 6.4 62.1 40 154 07 56 27 07 57 27 =1206+416 18 36 22 15.5 -50.8 6.4 62.0 60 162 07 56 28 07 58 15 NGC4151 18 37 10 14.6 -52.6 6.4 61.6 42 162 07 58 15 08 03 15 --- 18 42 11 13.8 -52.2 6.5 60.9 300 200 07 58 16 08 04 01 J1209+4119 18 42 57 14.4 -50.2 6.5 61.1 40 200 08 04 01 08 05 01 =1206+416 18 43 57 14.2 -50.1 6.6 60.9 60 208 08 04 02 08 05 49 NGC4151 18 44 45 13.4 -51.9 6.6 60.6 42 208 08 05 49 08 10 49 --- 18 49 46 12.5 -51.4 6.6 59.9 300 246 08 05 50 08 11 35 J1209+4119 18 50 32 13.2 -49.5 6.7 60.0 40 246 08 11 35 08 12 35 =1206+416 18 51 32 13.0 -49.4 6.7 59.8 60 254 08 11 36 08 13 22 NGC4151 18 52 20 12.1 -51.2 6.7 59.5 42 254 08 13 22 08 18 22 --- 18 57 21 11.3 -50.6 6.8 58.8 300 292 08 13 23 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 ---------------------------------------------------------------------------------------- --- Tue 30 Oct 2018 Day 303 --- 08 19 08 J1209+4119 18 58 06 11.9 -48.8 6.8 58.9 39 292 08 19 08 08 20 08 =1206+416 18 59 06 11.8 -48.7 6.8 58.8 60 300 08 19 09 08 20 55 NGC4151 18 59 53 10.8 -50.4 6.8 58.5 42 300 08 20 55 08 25 55 --- 19 04 54 10.0 -49.9 6.9 57.8 300 338 08 20 56 08 26 39 J1209+4119 19 05 38 10.7 -48.0 6.9 57.8 38 338 08 26 39 08 27 39 =1206+416 19 06 38 10.6 -47.9 6.9 57.7 60 346 08 26 40 08 28 25 NGC4151 19 07 25 9.6 -49.6 6.9 57.4 41 346 08 28 25 08 33 25 --- 19 12 26 8.8 -49.1 7.0 56.7 300 385 08 28 26 08 35 04 3C286 19 14 05 18.6 -65.1 5.7 64.3 57 385 08 35 04 08 37 04 --- 19 16 05 18.2 -64.9 5.7 64.1 120 400 08 35 05 08 38 48 J1209+4119 19 17 49 8.8 -46.7 7.1 56.0 65 400 08 38 48 08 39 48 =1206+416 19 18 49 8.7 -46.6 7.1 55.9 60 408 08 38 49 08 40 31 NGC4151 19 19 32 7.6 -48.3 7.1 55.7 37 408 08 40 31 08 45 31 --- 19 24 33 6.9 -47.7 7.2 D 55.0 0 446 08 40 32 08 46 07 J1209+4119 19 25 10 7.7 -46.0 7.2 54.9 31 446 08 46 07 08 47 07 =1206+416 19 26 10 7.5 -45.8 7.3 54.8 60 454 08 46 08 09 28 00 3C286 20 07 10 8.5 -59.5 6.6 58.8 2415 454 09 28 00 09 30 00 --- 20 09 10 8.2 -59.3 6.6 58.6 120 469 09 28 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess318.X1024 --- 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: TIANMA65 Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 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 = A4 C3 A4 C3 A4 C3 A4 C3 A4 C3 A4 C3 A4 C3 A4 C3 The following frequency sets based on these setups were used. Frequency Set: 6 Setup file default. Used with PCAL = off LO sum= 8367.49 8367.49 8367.49 8367.49 8399.49 8399.49 8399.49 8399.49 8431.49 8431.49 8431.49 8431.49 8463.49 8463.49 8463.49 8463.49 BBC fr= 267.49 267.49 267.49 267.49 299.49 299.49 299.49 299.49 331.49 331.49 331.49 331.49 363.49 363.49 363.49 363.49 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: 6 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) * NGC4151 12 08 01.055801 * 12 10 32.583400 12 11 26.909382 0.00 39 41 02.10308 * 39 24 21.03100 39 18 08.37909 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 17.104280 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 28.11266 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 31 57.913458 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 55.82973 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 sess318.X1024 1 2 3 4 5 6 7 8 9 1.166 65.270 J1209+4119 sess318.X1024 1 2 3 4 5 6 7 8 9 0.250 14.663 3C286 sess318.X1024 1 2 3 4 5 6 7 8 9 0.100 6.599 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 60.8 J1209+4119 62.5 3C286 45.6 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