COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113B 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 (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 ---------------------------------------------------------------------------------------- --- Wed 7 Nov 2018 Day 311 --- 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: 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 00 00 3C286 12 52 01 74.5 506.1 -0.7 -27.9 0 0 07 00 00 07 02 00 --- 12 54 01 74.7 507.5 -0.6 -26.7 120 15 07 00 01 07 05 36 NGC4151 12 57 37 80.3 606.5 0.8 D 58.8 93 15 07 05 36 07 08 36 --- 13 00 38 79.8 608.2 0.8 60.0 0 38 07 05 37 07 11 08 NGC4151 13 03 11 79.3 609.5 0.9 60.9 145 38 07 11 08 07 14 08 --- 13 06 11 78.8 611.0 0.9 61.9 180 62 07 11 09 07 14 54 J1209+4119 13 06 57 79.3 621.1 0.9 71.5 12 62 07 14 54 07 15 54 =1206+416 13 07 57 79.1 621.4 1.0 71.6 60 69 07 14 55 07 16 41 NGC4151 13 08 45 78.4 612.2 1.0 62.6 15 69 07 16 41 07 19 41 --- 13 11 45 77.9 613.5 1.0 63.4 180 92 07 16 42 07 20 27 J1209+4119 13 12 31 78.3 622.7 1.0 72.2 14 92 07 20 27 07 21 27 =1206+416 13 13 31 78.1 623.0 1.1 72.3 60 100 07 20 28 07 22 15 NGC4151 13 14 19 77.4 614.5 1.0 64.0 16 100 07 22 15 07 25 15 --- 13 17 19 76.9 615.6 1.1 64.6 180 123 07 22 16 07 26 01 J1209+4119 13 18 06 77.3 624.2 1.1 72.7 15 123 07 26 01 07 27 01 =1206+416 13 19 06 77.1 624.5 1.1 72.8 60 131 07 26 02 07 27 48 NGC4151 13 19 54 76.5 616.5 1.1 65.1 17 131 07 27 48 07 30 48 --- 13 22 54 75.9 617.5 1.2 65.6 180 154 07 27 49 07 31 34 J1209+4119 13 23 40 76.3 625.6 1.2 73.1 16 154 07 31 34 07 32 34 =1206+416 13 24 40 76.1 625.8 1.2 73.2 60 162 07 31 35 07 33 22 NGC4151 13 25 28 75.5 618.4 1.2 66.0 18 162 07 33 22 07 36 22 --- 13 28 29 74.9 619.3 1.3 66.4 180 185 07 33 23 07 37 08 J1209+4119 13 29 15 75.3 626.8 1.3 73.4 16 185 07 37 08 07 38 08 =1206+416 13 30 15 75.1 627.0 1.3 73.4 60 192 07 37 09 07 38 56 NGC4151 13 31 03 74.5 620.0 1.3 66.8 19 192 07 38 56 07 41 56 --- 13 34 04 74.0 620.9 1.4 67.1 180 215 07 38 57 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 ---------------------------------------------------------------------------------------- --- Wed 7 Nov 2018 Day 311 --- 07 42 42 J1209+4119 13 34 49 74.3 627.9 1.4 73.6 17 215 07 42 42 07 43 42 =1206+416 13 35 49 74.1 628.1 1.4 73.6 60 223 07 42 43 07 44 29 NGC4151 13 36 37 73.5 621.6 1.4 67.3 20 223 07 44 29 07 47 29 --- 13 39 38 73.0 622.3 1.5 67.6 180 246 07 44 30 07 48 14 J1209+4119 13 40 23 73.3 629.0 1.5 73.7 17 246 07 48 14 07 49 14 =1206+416 13 41 23 73.1 629.2 1.5 73.7 60 254 07 48 15 07 50 01 NGC4151 13 42 10 72.5 623.0 1.5 67.8 20 254 07 50 01 07 53 01 --- 13 45 11 72.0 623.7 1.6 68.0 180 277 07 50 02 07 53 46 J1209+4119 13 45 55 72.3 630.0 1.6 73.7 17 277 07 53 46 07 54 46 =1206+416 13 46 55 72.1 630.2 1.6 73.7 60 285 07 53 47 07 55 32 NGC4151 13 47 42 71.5 624.3 1.6 68.2 20 285 07 55 32 07 58 32 --- 13 50 42 71.0 624.9 1.7 68.3 180 308 07 55 33 07 59 15 J1209+4119 13 51 26 71.3 630.9 1.7 73.7 16 308 07 59 15 08 00 15 =1206+416 13 52 26 71.1 631.1 1.7 73.7 60 315 07 59 16 08 01 01 NGC4151 13 53 11 70.5 625.5 1.7 68.4 19 315 08 01 01 08 04 01 --- 13 56 12 70.0 626.1 1.7 68.6 180 338 08 01 02 08 04 42 J1209+4119 13 56 53 70.3 631.8 1.8 73.6 15 338 08 04 42 08 05 42 =1206+416 13 57 54 70.1 631.9 1.8 73.6 60 346 08 04 43 08 06 26 NGC4151 13 58 38 69.5 626.6 1.8 68.6 18 346 08 06 26 08 09 26 --- 14 01 38 69.0 627.2 1.8 68.7 180 369 08 06 27 08 10 05 J1209+4119 14 02 17 69.3 632.6 1.9 73.5 13 369 08 10 05 08 11 05 =1206+416 14 03 18 69.1 632.8 1.9 73.5 60 377 08 10 06 08 11 47 NGC4151 14 03 59 68.6 627.7 1.9 68.8 16 377 08 11 47 08 14 47 --- 14 07 00 68.0 628.2 1.9 68.8 180 400 08 11 48 08 15 24 J1209+4119 14 07 37 68.3 633.4 2.0 73.4 11 400 08 15 24 08 16 24 =1206+416 14 08 37 68.2 633.6 2.0 73.3 60 408 08 15 25 08 17 02 NGC4151 14 09 16 67.6 628.6 2.0 68.9 14 408 08 17 02 08 20 02 --- 14 12 16 67.1 629.2 2.0 68.9 180 431 08 17 03 08 20 39 J1209+4119 14 12 53 67.4 634.2 2.0 73.2 12 431 08 20 39 08 21 39 =1206+416 14 13 53 67.2 634.3 2.1 73.2 60 438 08 20 40 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 ---------------------------------------------------------------------------------------- --- Wed 7 Nov 2018 Day 311 --- 08 22 16 NGC4151 14 14 30 66.7 629.6 2.1 68.9 12 438 08 22 16 08 25 16 --- 14 17 30 66.1 630.1 2.1 68.9 180 462 08 22 17 08 27 22 3C286 14 19 37 73.6 579.2 0.8 31.9 50 462 08 27 22 08 29 22 --- 14 21 38 73.4 580.5 0.8 32.9 120 477 08 27 23 08 33 14 J1209+4119 14 25 30 65.1 635.9 2.3 72.7 152 477 08 33 14 08 34 14 =1206+416 14 26 30 64.9 636.0 2.3 72.6 60 485 08 33 15 08 34 51 NGC4151 14 27 07 64.4 631.7 2.3 68.8 13 485 08 34 51 08 37 51 --- 14 30 07 63.9 632.2 2.3 68.8 180 508 08 34 52 08 38 27 J1209+4119 14 30 44 64.2 636.6 2.3 72.5 13 508 08 38 27 08 39 27 =1206+416 14 31 44 64.0 636.7 2.4 72.4 60 515 08 38 28 08 40 04 NGC4151 14 32 21 63.5 632.5 2.3 68.7 13 515 08 40 04 08 43 04 --- 14 35 22 62.9 633.0 2.4 68.7 180 538 08 40 05 08 43 44 J1209+4119 14 36 02 63.2 637.3 2.4 72.2 17 538 08 43 44 08 44 44 =1206+416 14 37 02 63.1 637.4 2.4 72.1 60 546 08 43 45 08 45 22 NGC4151 14 37 40 62.5 633.4 2.4 68.6 14 546 08 45 22 08 48 22 --- 14 40 40 62.0 633.8 2.5 68.6 180 569 08 45 23 08 49 06 J1209+4119 14 41 24 62.3 638.0 2.5 71.9 21 569 08 49 06 08 50 06 =1206+416 14 42 24 62.1 638.1 2.5 71.9 60 577 08 49 07 08 50 47 NGC4151 14 43 06 61.5 634.2 2.5 68.5 18 577 08 50 47 08 53 47 --- 14 46 06 61.0 634.6 2.6 68.4 180 600 08 50 48 08 54 34 J1209+4119 14 46 53 61.3 638.6 2.6 71.6 24 600 08 54 34 08 55 34 =1206+416 14 47 53 61.1 638.8 2.6 71.6 60 608 08 54 35 08 56 18 NGC4151 14 48 37 60.5 635.0 2.6 68.3 21 608 08 56 18 08 59 18 --- 14 51 38 60.0 635.4 2.7 68.2 180 631 08 56 19 09 00 07 J1209+4119 14 52 27 60.3 639.3 2.7 71.3 26 631 09 00 07 09 01 07 =1206+416 14 53 27 60.1 639.4 2.7 71.2 60 638 09 00 08 09 01 57 NGC4151 14 54 17 59.5 635.8 2.7 68.1 28 638 09 01 57 09 04 57 --- 14 57 18 59.0 636.2 2.8 68.0 180 662 09 01 58 09 05 57 J1209+4119 14 58 18 59.3 640.0 2.8 70.9 38 662 09 05 57 09 06 57 =1206+416 14 59 18 59.1 640.1 2.8 70.9 60 669 09 05 58 Schedule for ZELENCHK (Code Zc ) Page 5 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 ---------------------------------------------------------------------------------------- --- Wed 7 Nov 2018 Day 311 --- 09 07 45 NGC4151 15 00 06 58.5 636.6 2.8 67.9 26 669 09 07 45 09 10 45 --- 15 03 07 57.9 637.0 2.9 67.8 180 692 09 07 46 09 11 36 J1209+4119 15 03 59 58.3 640.7 2.9 70.6 30 692 09 11 36 09 12 36 =1206+416 15 04 59 58.1 640.8 2.9 70.5 60 700 09 11 37 09 13 25 NGC4151 15 05 48 57.5 637.4 2.9 67.7 27 700 09 13 25 09 16 25 --- 15 08 48 56.9 637.8 3.0 67.6 180 723 09 13 26 09 17 18 J1209+4119 15 09 41 57.2 641.4 3.0 70.2 31 723 09 17 18 09 18 18 =1206+416 15 10 41 57.1 641.5 3.0 70.1 60 731 09 17 19 09 19 07 NGC4151 15 11 31 56.4 638.2 3.0 67.4 28 731 09 19 07 09 22 07 --- 15 14 31 55.9 638.6 3.1 67.3 180 754 09 19 08 09 23 00 J1209+4119 15 15 24 56.2 642.0 3.1 69.8 31 754 09 23 00 09 24 00 =1206+416 15 16 24 56.1 642.2 3.1 69.8 60 762 09 23 01 09 24 50 NGC4151 15 17 14 55.4 638.9 3.1 67.2 29 762 09 24 50 09 27 50 --- 15 20 15 54.9 639.3 3.1 67.0 180 785 09 24 51 09 28 54 J1209+4119 15 21 19 55.2 642.7 3.2 69.4 43 785 09 28 54 09 29 54 =1206+416 15 22 19 55.0 642.9 3.2 69.4 60 792 09 28 55 09 30 51 NGC4151 15 23 16 54.3 639.7 3.2 66.8 36 792 09 30 51 09 33 51 --- 15 26 16 53.8 640.1 3.2 66.7 180 815 09 30 52 09 34 43 J1209+4119 15 27 09 54.2 643.4 3.3 69.0 31 815 09 34 43 09 35 43 =1206+416 15 28 09 54.0 643.5 3.3 68.9 60 823 09 34 44 09 36 33 NGC4151 15 29 00 53.3 640.5 3.3 66.5 29 823 09 36 33 09 39 33 --- 15 32 00 52.8 640.9 3.3 66.4 180 846 09 36 34 09 40 26 J1209+4119 15 32 53 53.2 644.1 3.4 68.6 31 846 09 40 26 09 41 26 =1206+416 15 33 53 53.0 644.2 3.4 68.5 60 854 09 40 27 09 42 16 NGC4151 15 34 43 52.3 641.2 3.4 66.2 30 854 09 42 16 09 45 16 --- 15 37 43 51.8 641.6 3.4 66.0 180 877 09 42 17 09 46 08 J1209+4119 15 38 35 52.2 644.7 3.5 68.2 31 877 09 46 08 09 47 08 =1206+416 15 39 36 52.0 644.8 3.5 68.1 60 885 09 46 09 09 47 57 NGC4151 15 40 26 51.3 641.9 3.5 65.9 29 885 09 47 57 09 49 10 --- 15 41 39 51.1 642.1 3.5 65.8 73 894 09 47 58 Schedule for ZELENCHK (Code Zc ) Page 6 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 ---------------------------------------------------------------------------------------- --- Wed 7 Nov 2018 Day 311 --- 09 50 02 J1209+4119 15 42 31 51.5 645.2 3.5 67.9 31 894 09 50 02 09 51 02 =1206+416 15 43 31 51.3 645.3 3.6 67.8 60 902 09 50 03 09 58 00 3C286 15 50 30 59.6 615.6 2.3 54.2 362 902 09 58 00 10 00 00 --- 15 52 30 59.3 616.1 2.3 54.4 120 917 09 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess318.K1024 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: kvzr_k 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= 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 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: 10 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= 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: 10 11 12 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 27.093464 0.00 39 41 02.10308 * 39 24 21.03100 39 18 06.07593 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 17.293473 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 25.77323 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 58.011500 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 53.55359 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.K1024 1 2 3 4 5 6 7 8 9 10 14 15 1.420 132.674 J1209+4119 sess318.K1024 1 2 3 4 5 6 7 8 9 10 14 15 0.500 48.924 3C286 sess318.K1024 1 2 3 4 5 6 7 8 9 10 14 15 0.100 11.666 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 66.7 J1209+4119 68.3 3C286 50.3 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