COVER INFORMATION Station: ONSALA60 (Code O6 ) 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 ONSALA60 (Code O6 ) 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: 687.49 687.49 687.49 687.49 719.49 719.49 719.49 719.49 751.49 751.49 751.49 751.49 783.49 783.49 783.49 783.49 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 10 53 27 51.7 477.5 -2.6 -33.6 0 0 07 00 00 07 02 00 --- 10 55 28 51.9 478.1 -2.6 -33.4 120 15 07 00 01 07 03 49 J1209+4119 10 57 17 70.1 496.3 -1.2 -29.7 83 15 07 03 49 07 04 49 =1206+416 10 58 17 70.2 496.8 -1.2 -29.4 60 23 07 03 50 07 05 36 NGC4151 10 59 04 68.4 499.2 -1.2 -27.1 36 23 07 05 36 07 08 36 --- 11 02 04 68.7 500.6 -1.2 -26.2 180 46 07 05 37 07 09 21 J1209+4119 11 02 50 70.6 499.0 -1.1 -28.0 35 46 07 09 21 07 10 21 =1206+416 11 03 50 70.6 499.5 -1.1 -27.7 60 54 07 09 22 07 11 08 NGC4151 11 04 37 68.9 501.8 -1.1 -25.5 37 54 07 11 08 07 14 08 --- 11 07 38 69.1 503.3 -1.1 -24.6 180 77 07 11 09 07 14 54 J1209+4119 11 08 24 71.0 501.9 -1.0 -26.3 36 77 07 14 54 07 15 54 =1206+416 11 09 24 71.1 502.4 -1.0 -25.9 60 85 07 14 55 07 16 41 NGC4151 11 10 11 69.3 504.6 -1.0 -23.8 37 85 07 16 41 07 19 41 --- 11 13 12 69.6 506.1 -1.0 -22.9 180 108 07 16 42 07 20 27 J1209+4119 11 13 58 71.5 504.8 -0.9 -24.4 36 108 07 20 27 07 21 27 =1206+416 11 14 58 71.6 505.3 -0.9 -24.0 60 116 07 20 28 07 22 15 NGC4151 11 15 46 69.8 507.4 -0.9 -22.0 38 116 07 22 15 07 25 15 --- 11 18 46 70.0 509.0 -0.9 -21.0 180 139 07 22 16 07 26 01 J1209+4119 11 19 32 71.9 507.9 -0.8 -22.4 36 139 07 26 01 07 27 01 =1206+416 11 20 32 72.0 508.4 -0.8 -22.0 60 147 07 26 02 07 27 48 NGC4151 11 21 20 70.2 510.4 -0.8 -20.1 38 147 07 27 48 07 30 48 --- 11 24 21 70.4 512.0 -0.8 -19.1 180 170 07 27 49 07 31 34 J1209+4119 11 25 07 72.3 511.0 -0.8 -20.3 37 170 07 31 34 07 32 34 =1206+416 11 26 07 72.3 511.6 -0.7 -19.9 60 178 07 31 35 07 33 22 NGC4151 11 26 55 70.5 513.4 -0.7 -18.2 39 178 07 33 22 07 36 22 --- 11 29 56 70.7 515.1 -0.7 -17.1 180 201 07 33 23 Schedule for ONSALA60 (Code O6 ) 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 37 08 J1209+4119 11 30 42 72.6 514.3 -0.7 -18.1 36 201 07 37 08 07 38 08 =1206+416 11 31 42 72.7 514.9 -0.6 -17.7 60 209 07 37 09 07 38 56 NGC4151 11 32 30 70.8 516.5 -0.6 -16.1 39 209 07 38 56 07 41 56 --- 11 35 30 71.0 518.2 -0.6 -15.0 180 232 07 38 57 07 42 42 J1209+4119 11 36 16 72.9 517.7 -0.6 -15.8 36 232 07 42 42 07 43 42 =1206+416 11 37 16 73.0 518.3 -0.6 -15.3 60 240 07 42 43 07 44 29 NGC4151 11 38 04 71.1 519.7 -0.6 -14.0 38 240 07 44 29 07 47 29 --- 11 41 04 71.2 521.5 -0.5 -12.8 180 263 07 44 30 07 48 14 J1209+4119 11 41 49 73.2 521.2 -0.5 -13.4 36 263 07 48 14 07 49 14 =1206+416 11 42 50 73.2 521.8 -0.5 -12.9 60 271 07 48 15 07 50 01 NGC4151 11 43 37 71.3 523.0 -0.5 -11.8 38 271 07 50 01 07 53 01 --- 11 46 38 71.5 524.7 -0.4 -10.6 180 294 07 50 02 07 53 46 J1209+4119 11 47 22 73.4 524.7 -0.4 -10.9 35 294 07 53 46 07 54 46 =1206+416 11 48 22 73.5 525.4 -0.4 -10.4 60 301 07 53 47 07 55 32 NGC4151 11 49 09 71.5 526.3 -0.4 -9.5 37 301 07 55 32 07 58 32 --- 11 52 09 71.6 528.1 -0.3 -8.3 180 325 07 55 33 07 59 15 J1209+4119 11 52 52 73.6 528.3 -0.3 -8.3 34 325 07 59 15 08 00 15 =1206+416 11 53 52 73.6 529.0 -0.3 -7.9 60 332 07 59 16 08 01 01 NGC4151 11 54 38 71.7 529.6 -0.3 -7.2 36 332 08 01 01 08 04 01 --- 11 57 39 71.8 531.4 -0.2 -6.0 180 356 08 01 02 08 04 42 J1209+4119 11 58 20 73.7 532.0 -0.2 -5.7 32 356 08 04 42 08 05 42 =1206+416 11 59 20 73.7 532.6 -0.2 -5.3 60 363 08 04 43 08 06 26 NGC4151 12 00 04 71.8 532.9 -0.2 -4.9 35 363 08 06 26 08 09 26 --- 12 03 05 71.9 534.8 -0.1 -3.6 180 386 08 06 27 08 10 05 J1209+4119 12 03 44 73.8 535.6 -0.1 -3.2 30 386 08 10 05 08 11 05 =1206+416 12 04 44 73.8 536.3 -0.1 -2.7 60 394 08 10 06 08 11 47 NGC4151 12 05 26 71.9 536.3 -0.1 -2.6 32 394 08 11 47 08 14 47 --- 12 08 27 71.9 538.1 -0.1 -1.3 180 417 08 11 48 08 15 24 J1209+4119 12 09 03 73.8 539.2 -0.0 -0.6 27 417 08 15 24 08 16 24 =1206+416 12 10 04 73.8 539.8 -0.0 -0.1 60 425 08 15 25 Schedule for ONSALA60 (Code O6 ) 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 17 02 NGC4151 12 10 42 71.9 539.5 -0.0 -0.3 29 425 08 17 02 08 20 02 --- 12 13 43 71.9 541.4 0.0 1.0 180 448 08 17 03 08 20 39 J1209+4119 12 14 20 73.8 542.7 0.1 2.0 27 448 08 20 39 08 21 39 =1206+416 12 15 20 73.8 543.4 0.1 2.4 60 456 08 20 40 08 22 16 NGC4151 12 15 57 71.9 542.8 0.1 1.9 27 456 08 22 16 08 25 16 --- 12 18 57 71.9 544.7 0.1 3.2 180 479 08 22 17 08 27 22 3C286 12 21 04 60.4 507.9 -1.2 -19.4 99 479 08 27 22 08 29 22 --- 12 23 04 60.5 508.8 -1.1 -18.9 120 495 08 27 23 08 33 14 J1209+4119 12 26 57 73.6 551.2 0.3 8.0 203 495 08 33 14 08 34 14 =1206+416 12 27 57 73.6 551.8 0.3 8.4 60 502 08 33 15 08 34 51 NGC4151 12 28 34 71.7 550.6 0.3 7.4 27 502 08 34 51 08 37 51 --- 12 31 34 71.6 552.4 0.3 8.6 180 526 08 34 52 08 38 27 J1209+4119 12 32 11 73.5 554.6 0.4 10.4 27 526 08 38 27 08 39 27 =1206+416 12 33 11 73.4 555.2 0.4 10.9 60 533 08 38 28 08 40 04 NGC4151 12 33 48 71.5 553.8 0.4 9.5 27 533 08 40 04 08 43 04 --- 12 36 48 71.4 555.6 0.4 10.8 180 556 08 40 05 08 43 44 J1209+4119 12 37 29 73.3 558.0 0.5 12.8 30 556 08 43 44 08 44 44 =1206+416 12 38 29 73.2 558.6 0.5 13.2 60 564 08 43 45 08 45 22 NGC4151 12 39 06 71.4 556.9 0.5 11.7 27 564 08 45 22 08 48 22 --- 12 42 07 71.2 558.7 0.5 12.9 180 587 08 45 23 08 49 06 J1209+4119 12 42 51 73.0 561.4 0.5 15.1 33 587 08 49 06 08 50 06 =1206+416 12 43 51 73.0 562.0 0.6 15.6 60 595 08 49 07 08 50 47 NGC4151 12 44 32 71.1 560.1 0.6 13.9 31 595 08 50 47 08 53 47 --- 12 47 33 71.0 561.9 0.6 15.0 180 618 08 50 48 08 54 34 J1209+4119 12 48 20 72.7 564.7 0.6 17.4 36 618 08 54 34 08 55 34 =1206+416 12 49 20 72.7 565.3 0.7 17.9 60 626 08 54 35 08 56 18 NGC4151 12 50 04 70.8 563.3 0.6 16.0 33 626 08 56 18 08 59 18 --- 12 53 04 70.7 565.0 0.7 17.1 180 649 08 56 19 09 00 07 J1209+4119 12 53 54 72.4 568.0 0.7 19.7 38 649 09 00 07 09 01 07 =1206+416 12 54 54 72.3 568.6 0.7 20.1 60 657 09 00 08 Schedule for ONSALA60 (Code O6 ) 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 01 57 NGC4151 12 55 44 70.5 566.5 0.7 18.1 39 657 09 01 57 09 04 57 --- 12 58 44 70.3 568.1 0.8 19.2 180 680 09 01 58 09 05 57 J1209+4119 12 59 45 72.0 571.4 0.8 21.9 49 680 09 05 57 09 06 57 =1206+416 13 00 45 71.9 572.0 0.8 22.3 60 688 09 05 58 09 07 45 NGC4151 13 01 33 70.2 569.6 0.8 20.1 37 688 09 07 45 09 10 45 --- 13 04 33 70.0 571.2 0.9 21.2 180 711 09 07 46 09 11 36 J1209+4119 13 05 25 71.6 574.5 0.9 24.0 40 711 09 11 36 09 12 36 =1206+416 13 06 25 71.5 575.1 0.9 24.3 60 719 09 11 37 09 13 25 NGC4151 13 07 14 69.8 572.6 0.9 22.1 38 719 09 13 25 09 16 25 --- 13 10 15 69.5 574.2 1.0 23.0 180 742 09 13 26 09 17 18 J1209+4119 13 11 07 71.1 577.6 1.0 25.9 41 742 09 17 18 09 18 18 =1206+416 13 12 08 71.0 578.1 1.0 26.2 60 750 09 17 19 09 19 07 NGC4151 13 12 57 69.3 575.5 1.0 23.9 38 750 09 19 07 09 22 07 --- 13 15 58 69.1 577.0 1.1 24.8 180 773 09 19 08 09 23 00 J1209+4119 13 16 51 70.6 580.5 1.1 27.7 41 773 09 23 00 09 24 00 =1206+416 13 17 51 70.6 581.0 1.1 28.0 60 781 09 23 01 09 24 50 NGC4151 13 18 41 68.9 578.4 1.1 25.6 39 781 09 24 50 09 27 50 --- 13 21 41 68.6 579.8 1.2 26.5 180 804 09 24 51 09 28 54 J1209+4119 13 22 46 70.1 583.4 1.2 29.5 53 804 09 28 54 09 29 54 =1206+416 13 23 46 70.0 583.9 1.2 29.8 60 812 09 28 55 09 30 51 NGC4151 13 24 43 68.3 581.2 1.2 27.3 45 812 09 30 51 09 33 51 --- 13 27 43 68.1 582.6 1.3 28.1 180 835 09 30 52 09 34 43 J1209+4119 13 28 36 69.6 586.2 1.3 31.1 41 835 09 34 43 09 35 43 =1206+416 13 29 36 69.5 586.6 1.3 31.4 60 842 09 34 44 09 36 33 NGC4151 13 30 26 67.8 583.8 1.3 28.8 39 842 09 36 33 09 39 33 --- 13 33 27 67.5 585.2 1.4 29.6 180 866 09 36 34 09 40 26 J1209+4119 13 34 19 69.0 588.8 1.4 32.6 41 866 09 40 26 09 41 26 =1206+416 13 35 19 68.9 589.2 1.4 32.8 60 873 09 40 27 09 42 16 NGC4151 13 36 10 67.3 586.4 1.4 30.3 39 873 09 42 16 09 45 16 --- 13 39 10 67.0 587.7 1.5 31.0 180 897 09 42 17 Schedule for ONSALA60 (Code O6 ) 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 46 08 J1209+4119 13 40 02 68.4 591.2 1.5 34.0 40 897 09 46 08 09 47 08 =1206+416 13 41 02 68.3 591.7 1.5 34.2 60 904 09 46 09 09 47 57 NGC4151 13 41 52 66.7 588.8 1.5 31.6 38 904 09 47 57 09 49 10 --- 13 43 06 66.6 589.3 1.5 31.9 73 914 09 47 58 09 50 02 J1209+4119 13 43 57 68.0 592.9 1.6 34.8 40 914 09 50 02 09 51 02 =1206+416 13 44 57 67.9 593.3 1.6 35.0 60 921 09 50 03 09 58 00 3C286 13 51 56 62.8 549.5 0.3 5.9 387 921 09 58 00 10 00 00 --- 13 53 57 62.8 550.4 0.4 6.5 120 937 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 --- 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: 6 Station: ONSALA60 Total bit rate: 1024 Format: VDIF 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= 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 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 = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 5 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= 687.49 687.49 687.49 687.49 719.49 719.49 719.49 719.49 751.49 751.49 751.49 751.49 783.49 783.49 783.49 783.49 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: 5 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 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