COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113D 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 ---------------------------------------------------------------------------------------- --- Mon 11 Mar 2019 Day 70 --- 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 23 00 00 3C286 13 03 31 75.5 514.7 -0.5 -20.9 0 0 23 00 00 23 02 00 --- 13 05 32 75.6 516.4 -0.4 -19.6 120 15 23 00 01 23 04 20 J1209+4119 13 07 52 79.1 621.3 1.0 71.6 10 15 23 04 20 23 06 20 =1206+416 13 09 52 78.8 621.9 1.0 71.9 120 31 23 04 21 23 06 20 NGC4151 13 09 52 78.2 612.6 1.0 62.9 -32 31 No stop 23 10 20 --- 13 13 53 77.5 614.3 1.0 63.9 208 62 23 06 21 23 10 20 J1209+4119 13 13 53 78.0 623.1 1.1 72.3 -32 62 No stop 23 12 20 =1206+416 13 15 53 77.7 623.6 1.1 72.5 88 77 23 10 21 23 12 20 NGC4151 13 15 53 77.2 615.0 1.1 64.3 -31 77 No stop 23 16 20 --- 13 19 54 76.5 616.5 1.1 65.1 209 108 23 12 21 23 17 00 J1209+4119 13 20 34 76.8 624.8 1.2 72.9 9 108 23 17 00 23 19 00 =1206+416 13 22 34 76.5 625.3 1.2 73.0 120 123 23 17 01 23 19 00 NGC4151 13 22 34 76.0 617.4 1.2 65.6 -30 123 No stop 23 23 00 --- 13 26 35 75.3 618.7 1.3 66.2 210 154 23 19 01 23 23 00 J1209+4119 13 26 35 75.8 626.2 1.3 73.3 -30 154 No stop 23 25 00 =1206+416 13 28 35 75.4 626.6 1.3 73.4 90 169 23 23 01 23 25 00 NGC4151 13 28 35 74.9 619.3 1.3 66.4 -29 169 No stop 23 29 00 --- 13 32 36 74.2 620.4 1.4 66.9 211 200 23 25 01 23 29 40 J1209+4119 13 33 16 74.5 627.6 1.4 73.5 11 200 23 29 40 23 31 40 =1206+416 13 35 16 74.2 628.0 1.4 73.6 120 215 23 29 41 23 31 40 NGC4151 13 35 16 73.7 621.2 1.4 67.2 -28 215 No stop 23 35 40 --- 13 39 17 73.0 622.2 1.5 67.6 212 246 23 31 41 23 35 40 J1209+4119 13 39 17 73.5 628.8 1.5 73.6 -28 246 No stop 23 37 40 =1206+416 13 41 17 73.1 629.1 1.5 73.7 92 262 23 35 41 23 37 40 NGC4151 13 41 17 72.7 622.7 1.5 67.7 -27 262 No stop 23 41 40 --- 13 45 18 72.0 623.7 1.6 68.0 213 292 23 37 41 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 ---------------------------------------------------------------------------------------- --- Mon 11 Mar 2019 Day 70 --- 23 42 20 J1209+4119 13 45 58 72.3 630.0 1.6 73.7 13 292 23 42 20 23 44 20 =1206+416 13 47 58 71.9 630.3 1.6 73.7 120 308 23 42 21 23 44 20 NGC4151 13 47 58 71.5 624.3 1.6 68.2 -27 308 No stop 23 48 20 --- 13 51 59 70.8 625.2 1.7 68.4 213 338 23 44 21 23 48 20 J1209+4119 13 51 59 71.2 631.0 1.7 73.7 -27 338 No stop 23 50 20 =1206+416 13 53 59 70.8 631.3 1.7 73.6 93 354 23 48 21 23 50 20 NGC4151 13 53 59 70.4 625.6 1.7 68.5 -26 354 No stop 23 54 20 --- 13 58 00 69.7 626.5 1.8 68.6 214 385 23 50 21 23 55 00 J1209+4119 13 58 40 70.0 632.1 1.8 73.6 14 385 23 55 00 23 57 00 =1206+416 14 00 41 69.6 632.4 1.8 73.5 120 400 23 55 01 --- Start: Mon 11 Mar 2019 Day 70 -- Stop: Tue 12 Mar 2019 Day 71 --- 23 57 00 NGC4151 14 00 41 69.2 627.0 1.8 68.7 -26 400 No stop 00 01 00 --- 14 04 41 68.5 627.8 1.9 68.8 214 431 23 57 01 00 01 00 J1209+4119 14 04 41 68.9 633.0 1.9 73.4 -25 431 No stop 00 03 00 =1206+416 14 06 42 68.5 633.3 1.9 73.4 95 446 00 01 01 00 03 00 NGC4151 14 06 42 68.1 628.1 1.9 68.8 -25 446 No stop 00 07 00 --- 14 10 42 67.4 628.9 2.0 68.9 215 477 00 03 01 00 07 40 J1209+4119 14 11 22 67.7 633.9 2.0 73.2 15 477 00 07 40 00 09 40 =1206+416 14 13 23 67.3 634.2 2.1 73.2 120 492 00 07 41 00 09 40 NGC4151 14 13 23 66.9 629.4 2.0 68.9 -25 492 No stop 00 13 40 --- 14 17 23 66.2 630.1 2.1 68.9 215 523 00 09 41 00 13 40 J1209+4119 14 17 23 66.6 634.8 2.1 73.0 -25 523 No stop 00 15 40 =1206+416 14 19 24 66.2 635.1 2.2 72.9 95 538 00 13 41 00 15 40 NGC4151 14 19 24 65.8 630.4 2.1 68.9 -24 538 No stop 00 19 40 --- 14 23 24 65.1 631.1 2.2 68.9 216 569 00 15 41 00 20 20 J1209+4119 14 24 04 65.4 635.7 2.2 72.8 16 569 00 20 20 00 22 20 =1206+416 14 26 05 65.0 636.0 2.3 72.7 120 585 00 20 21 00 22 20 NGC4151 14 26 05 64.6 631.5 2.2 68.8 -24 585 No stop 00 26 20 --- 14 30 05 63.9 632.2 2.3 68.8 216 615 00 22 21 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 12 Mar 2019 Day 71 --- 00 26 20 J1209+4119 14 30 05 64.3 636.5 2.3 72.5 -24 615 No stop 00 28 20 =1206+416 14 32 06 64.0 636.8 2.4 72.4 96 631 00 26 21 00 28 20 NGC4151 14 32 06 63.5 632.5 2.3 68.7 -23 631 No stop 00 32 20 --- 14 36 06 62.8 633.1 2.4 68.7 217 662 00 28 21 00 33 00 J1209+4119 14 36 46 63.1 637.4 2.4 72.2 17 662 00 33 00 00 35 00 =1206+416 14 38 47 62.8 637.6 2.5 72.0 120 677 00 33 01 00 37 20 3C286 14 41 07 70.9 591.4 1.2 40.9 68 677 00 37 20 00 40 00 --- 14 43 48 70.5 592.7 1.2 41.8 160 697 00 37 21 00 42 00 J1209+4119 14 45 48 61.5 638.5 2.6 71.7 49 697 00 42 00 00 44 00 =1206+416 14 47 48 61.1 638.7 2.6 71.6 120 713 00 42 01 00 44 00 NGC4151 14 47 48 60.7 634.9 2.6 68.4 -23 713 No stop 00 48 00 --- 14 51 49 60.0 635.4 2.7 68.2 217 744 00 44 01 00 48 40 J1209+4119 14 52 29 60.3 639.3 2.7 71.3 18 744 00 48 40 00 50 40 =1206+416 14 54 29 60.0 639.6 2.7 71.2 120 759 00 48 41 00 50 40 NGC4151 14 54 29 59.5 635.8 2.7 68.1 -22 759 No stop 00 54 40 --- 14 58 30 58.8 636.4 2.8 68.0 218 790 00 50 41 00 54 40 J1209+4119 14 58 30 59.2 640.0 2.8 70.9 -22 790 No stop 00 56 40 =1206+416 15 00 30 58.9 640.3 2.8 70.8 98 805 00 54 41 00 56 40 NGC4151 15 00 30 58.4 636.7 2.8 67.9 -22 805 No stop 01 00 40 --- 15 04 31 57.7 637.2 2.9 67.7 218 836 00 56 41 01 01 20 J1209+4119 15 05 11 58.1 640.8 2.9 70.5 18 836 01 01 20 01 03 20 =1206+416 15 07 11 57.7 641.1 2.9 70.4 120 851 01 01 21 01 03 20 NGC4151 15 07 11 57.2 637.6 2.9 67.6 -22 851 No stop 01 07 20 --- 15 11 12 56.5 638.1 3.0 67.4 218 882 01 03 21 01 07 20 J1209+4119 15 11 12 57.0 641.5 3.0 70.1 -22 882 No stop 01 09 20 =1206+416 15 13 12 56.6 641.8 3.0 70.0 98 897 01 07 21 01 09 20 NGC4151 15 13 12 56.1 638.4 3.0 67.3 -21 897 No stop 01 13 20 --- 15 17 13 55.4 638.9 3.1 67.2 219 928 01 09 21 01 14 00 J1209+4119 15 17 53 55.8 642.3 3.1 69.7 19 928 01 14 00 01 16 00 =1206+416 15 19 54 55.5 642.6 3.2 69.5 120 944 01 14 01 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 ---------------------------------------------------------------------------------------- --- Tue 12 Mar 2019 Day 71 --- 01 16 00 NGC4151 15 19 54 54.9 639.3 3.1 67.0 -21 944 No stop 01 20 00 --- 15 23 54 54.2 639.8 3.2 66.8 219 974 01 16 01 01 20 00 J1209+4119 15 23 54 54.7 643.0 3.2 69.2 -21 974 No stop 01 22 00 =1206+416 15 25 55 54.4 643.3 3.3 69.1 99 990 01 20 01 01 22 00 NGC4151 15 25 55 53.9 640.1 3.2 66.7 -21 990 No stop 01 26 00 --- 15 29 55 53.2 640.6 3.3 66.5 219 1021 01 22 01 01 26 40 J1209+4119 15 30 35 53.6 643.8 3.3 68.8 19 1021 01 26 40 01 28 40 =1206+416 15 32 36 53.2 644.0 3.4 68.6 120 1036 01 26 41 01 28 40 NGC4151 15 32 36 52.7 640.9 3.4 66.3 -21 1036 No stop 01 32 40 --- 15 36 36 52.0 641.4 3.4 66.1 219 1067 01 28 41 01 32 40 J1209+4119 15 36 36 52.5 644.5 3.4 68.3 -21 1067 No stop 01 34 40 =1206+416 15 38 37 52.2 644.7 3.5 68.2 99 1082 01 32 41 01 34 40 NGC4151 15 38 37 51.6 641.7 3.5 66.0 -20 1082 No stop 01 38 40 --- 15 42 37 50.9 642.2 3.5 65.8 220 1113 01 34 41 01 39 20 J1209+4119 15 43 17 51.4 645.2 3.5 67.8 20 1113 01 39 20 01 41 20 =1206+416 15 45 18 51.0 645.5 3.6 67.7 120 1128 01 39 21 01 41 20 NGC4151 15 45 18 50.4 642.5 3.6 65.6 -20 1128 No stop 01 45 20 --- 15 49 18 49.7 643.0 3.6 65.3 220 1159 01 41 21 01 45 20 J1209+4119 15 49 18 50.3 645.9 3.6 67.4 -20 1159 No stop 01 47 20 =1206+416 15 51 19 50.0 646.2 3.7 67.2 100 1174 01 45 21 01 47 20 NGC4151 15 51 19 49.4 643.3 3.7 65.2 -20 1174 No stop 01 51 20 --- 15 55 19 48.7 643.8 3.7 65.0 220 1205 01 47 21 01 52 00 J1209+4119 15 55 59 49.1 646.7 3.8 66.8 20 1205 01 52 00 01 54 00 =1206+416 15 58 00 48.8 646.9 3.8 66.7 120 1221 01 52 01 01 54 00 NGC4151 15 58 00 48.2 644.1 3.8 64.8 -20 1221 No stop 01 58 00 --- 16 02 00 47.5 644.6 3.8 64.5 220 1251 01 54 01 01 58 00 J1209+4119 16 02 00 48.1 647.4 3.9 66.4 -20 1251 No stop 02 00 00 =1206+416 16 04 01 47.8 647.6 3.9 66.2 100 1267 01 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess119.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 31.060957 0.00 39 41 02.10308 * 39 24 21.03100 39 17 54.18012 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 21.343591 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 14.53916 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 01.677600 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 33.31208 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 sess119.K1024 1 2 3 4 5 6 7 8 9 10 14 15 1.733 140.223 J1209+4119 sess119.K1024 1 2 3 4 5 6 7 8 9 10 14 15 0.933 77.892 3C286 sess119.K1024 1 2 3 4 5 6 7 8 9 10 14 15 0.078 9.942 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 142.8 J1209+4119 141.1 3C286 140.2 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