COVER INFORMATION Station: ZELENCHK (Code Zc ) 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 ZELENCHK (Code Zc ) 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: 287.49 287.49 287.49 287.49 319.49 319.49 319.49 319.49 351.49 351.49 351.49 351.49 383.49 383.49 383.49 383.49 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 12 50 33 74.3 505.0 -0.7 -28.7 0 0 07 30 00 07 32 00 --- 12 52 33 74.5 506.4 -0.7 -27.6 120 15 07 30 01 07 35 36 NGC4151 12 56 10 80.5 605.6 0.7 D 58.2 92 15 07 35 36 07 40 36 --- 13 01 10 79.7 608.5 0.8 60.2 0 54 07 35 37 07 41 21 J1209+4119 13 01 56 80.2 619.4 0.9 D 70.6 11 54 07 41 21 07 42 21 =1206+416 13 02 56 80.0 619.7 0.9 70.8 0 62 07 41 22 07 43 08 NGC4151 13 03 43 79.3 609.8 0.9 61.1 14 62 07 43 08 07 48 08 --- 13 08 44 78.4 612.2 1.0 62.6 300 100 07 43 09 07 48 54 J1209+4119 13 09 30 78.8 621.9 1.0 71.8 13 100 07 48 54 07 49 54 =1206+416 13 10 30 78.6 622.2 1.0 72.0 60 108 07 48 55 07 50 41 NGC4151 13 11 18 78.0 613.3 1.0 63.3 16 108 07 50 41 07 55 41 --- 13 16 19 77.1 615.2 1.1 64.4 300 146 07 50 42 07 56 27 J1209+4119 13 17 05 77.4 624.0 1.1 72.7 15 146 07 56 27 07 57 27 =1206+416 13 18 05 77.3 624.2 1.1 72.7 60 154 07 56 28 07 58 15 NGC4151 13 18 53 76.6 616.2 1.1 64.9 17 154 07 58 15 08 03 15 --- 13 23 54 75.8 617.9 1.2 65.8 300 192 07 58 16 08 04 01 J1209+4119 13 24 40 76.1 625.8 1.2 73.2 16 192 08 04 01 08 05 01 =1206+416 13 25 40 75.9 626.0 1.3 73.2 60 200 08 04 02 08 05 49 NGC4151 13 26 28 75.3 618.7 1.3 66.2 18 200 08 05 49 08 10 49 --- 13 31 29 74.4 620.2 1.3 66.8 300 238 08 05 50 08 11 35 J1209+4119 13 32 15 74.7 627.4 1.4 73.5 17 238 08 11 35 08 12 35 =1206+416 13 33 15 74.5 627.6 1.4 73.5 60 246 08 11 36 08 13 22 NGC4151 13 34 03 74.0 620.9 1.4 67.1 19 246 08 13 22 08 18 22 --- 13 39 04 73.1 622.2 1.5 67.6 300 285 08 13 23 08 19 08 J1209+4119 13 39 49 73.4 628.9 1.5 73.7 17 285 08 19 08 08 20 08 =1206+416 13 40 49 73.2 629.1 1.5 73.7 60 292 08 19 09 Schedule for ZELENCHK (Code Zc ) 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 20 55 NGC4151 13 41 36 72.6 622.8 1.5 67.8 20 292 08 20 55 08 25 55 --- 13 46 37 71.7 624.0 1.6 68.1 300 331 08 20 56 08 26 39 J1209+4119 13 47 21 72.0 630.2 1.6 73.7 17 331 08 26 39 08 27 39 =1206+416 13 48 21 71.8 630.4 1.6 73.7 60 338 08 26 40 08 28 25 NGC4151 13 49 08 71.3 624.6 1.6 68.2 20 338 08 28 25 08 33 25 --- 13 54 09 70.4 625.7 1.7 68.5 300 377 08 28 26 08 35 04 3C286 13 55 48 75.8 561.4 0.4 17.8 9 377 08 35 04 08 37 04 --- 13 57 48 75.7 563.1 0.4 19.2 120 392 08 35 05 08 38 48 J1209+4119 13 59 32 69.8 632.2 1.8 73.6 10 392 08 38 48 08 39 48 =1206+416 14 00 32 69.6 632.4 1.8 73.5 60 400 08 38 49 08 40 31 NGC4151 14 01 15 69.1 627.1 1.8 68.7 17 400 08 40 31 08 45 31 --- 14 06 16 68.2 628.1 1.9 68.8 300 438 08 40 32 08 46 07 J1209+4119 14 06 53 68.5 633.3 1.9 73.4 11 438 08 46 07 08 47 07 =1206+416 14 07 53 68.3 633.5 2.0 73.3 60 446 08 46 08 08 47 47 NGC4151 14 08 33 67.8 628.5 2.0 68.8 14 446 08 47 47 08 52 47 --- 14 13 33 66.9 629.4 2.0 68.9 300 485 08 47 48 08 53 23 J1209+4119 14 14 10 67.2 634.4 2.1 73.1 12 485 08 53 23 08 54 23 =1206+416 14 15 10 67.0 634.5 2.1 73.1 60 492 08 53 24 08 55 00 NGC4151 14 15 47 66.5 629.8 2.1 68.9 12 492 08 55 00 09 00 00 --- 14 20 48 65.5 630.7 2.2 68.9 300 531 08 55 01 09 00 37 J1209+4119 14 21 25 65.9 635.4 2.2 72.9 13 531 09 00 37 09 01 37 =1206+416 14 22 25 65.7 635.5 2.2 72.8 60 538 09 00 38 09 02 14 NGC4151 14 23 02 65.1 631.0 2.2 68.9 13 538 09 02 14 09 07 14 --- 14 28 03 64.2 631.9 2.3 68.8 300 577 09 02 15 09 07 50 J1209+4119 14 28 39 64.6 636.3 2.3 72.6 13 577 09 07 50 09 08 50 =1206+416 14 29 40 64.4 636.5 2.3 72.5 60 585 09 07 51 09 09 27 NGC4151 14 30 16 63.8 632.2 2.3 68.8 13 585 09 09 27 09 14 27 --- 14 35 17 62.9 633.0 2.4 68.7 300 623 09 09 28 09 15 07 J1209+4119 14 35 57 63.2 637.3 2.4 72.2 17 623 09 15 07 09 16 07 =1206+416 14 36 58 63.1 637.4 2.4 72.1 60 631 09 15 08 Schedule for ZELENCHK (Code Zc ) Page 4 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 --- 09 16 45 NGC4151 14 37 35 62.5 633.4 2.4 68.6 14 631 09 16 45 09 21 41 --- 14 42 32 61.6 634.1 2.5 68.5 296 669 09 16 46 09 22 26 J1209+4119 14 43 17 61.9 638.2 2.6 71.8 22 669 09 22 26 09 23 26 =1206+416 14 44 17 61.8 638.3 2.6 71.8 60 676 09 22 27 09 28 00 3C286 14 48 53 69.7 595.1 1.3 43.4 205 676 09 28 00 09 30 00 --- 14 50 53 69.4 596.0 1.3 44.0 120 692 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 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq.dat: kvzr_x Added by Des Small, 24 February 2012 Setup group: 2 Station: ZELENCHK 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= 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: 9 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= 287.49 287.49 287.49 287.49 319.49 319.49 319.49 319.49 351.49 351.49 351.49 351.49 383.49 383.49 383.49 383.49 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: 9 10 11 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