COVER INFORMATION Station: METSAHOV (Code Mh ) 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 METSAHOV (Code Mh ) 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: 707.49 707.49 707.49 707.49 739.49 739.49 739.49 739.49 771.49 771.49 771.49 771.49 803.49 803.49 803.49 803.49 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 11 43 19 55.1 136.5 -1.8 -23.4 0 0 07 00 00 07 02 00 --- 11 45 20 55.3 137.2 -1.8 -23.1 120 15 07 00 01 07 03 49 J1209+4119 11 47 09 70.7 166.8 -0.4 -8.7 74 15 07 03 49 07 04 49 =1206+416 11 48 09 70.7 167.3 -0.4 -8.3 60 23 07 03 50 07 05 36 NGC4151 11 48 56 68.8 167.9 -0.4 -7.7 39 23 07 05 36 07 08 36 --- 11 51 56 68.9 169.5 -0.3 -6.7 180 46 07 05 37 07 09 21 J1209+4119 11 52 42 70.8 169.9 -0.3 -6.7 38 46 07 09 21 07 10 21 =1206+416 11 53 42 70.8 170.5 -0.3 -6.3 60 54 07 09 22 07 11 08 NGC4151 11 54 29 68.9 170.8 -0.3 -5.9 39 54 07 11 08 07 14 08 --- 11 57 30 69.0 172.5 -0.2 -4.8 180 77 07 11 09 07 14 54 J1209+4119 11 58 16 70.9 173.1 -0.2 -4.6 38 77 07 14 54 07 15 54 =1206+416 11 59 16 70.9 173.6 -0.2 -4.2 60 85 07 14 55 07 16 41 NGC4151 12 00 03 69.0 173.8 -0.2 -4.0 40 85 07 16 41 07 19 41 --- 12 03 04 69.0 175.5 -0.1 -2.9 180 108 07 16 42 07 20 27 J1209+4119 12 03 50 71.0 176.3 -0.1 -2.5 38 108 07 20 27 07 21 27 =1206+416 12 04 50 71.0 176.8 -0.1 -2.1 60 115 07 20 28 07 22 15 NGC4151 12 05 38 69.1 176.8 -0.1 -2.0 40 115 07 22 15 07 25 15 --- 12 08 38 69.1 178.5 -0.0 -1.0 180 138 07 22 16 07 26 01 J1209+4119 12 09 24 71.0 179.5 -0.0 -0.3 38 138 07 26 01 07 27 01 =1206+416 12 10 24 71.0 180.1 0.0 0.0 60 146 07 26 02 07 27 48 NGC4151 12 11 12 69.1 179.9 -0.0 -0.1 40 146 07 27 48 07 30 48 --- 12 14 13 69.1 181.5 0.0 1.0 180 169 07 27 49 07 31 34 J1209+4119 12 14 59 71.0 182.7 0.1 1.8 38 169 07 31 34 07 32 34 =1206+416 12 15 59 71.0 183.3 0.1 2.2 60 177 07 31 35 07 33 22 NGC4151 12 16 47 69.1 182.9 0.1 1.9 40 177 07 33 22 07 36 22 --- 12 19 48 69.0 184.5 0.1 2.9 180 200 07 33 23 Schedule for METSAHOV (Code Mh ) 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 12 20 34 70.9 185.9 0.2 3.9 38 200 07 37 08 07 38 08 =1206+416 12 21 34 70.9 186.5 0.2 4.3 60 208 07 37 09 07 38 56 NGC4151 12 22 22 69.0 185.9 0.2 3.8 40 208 07 38 56 07 41 56 --- 12 25 22 69.0 187.5 0.2 4.8 180 231 07 38 57 07 42 42 J1209+4119 12 26 08 70.8 189.1 0.3 6.0 38 231 07 42 42 07 43 42 =1206+416 12 27 08 70.8 189.7 0.3 6.4 60 238 07 42 43 07 44 29 NGC4151 12 27 56 68.9 188.9 0.3 5.7 40 238 07 44 29 07 47 29 --- 12 30 56 68.9 190.5 0.3 6.7 180 262 07 44 30 07 48 14 J1209+4119 12 31 41 70.7 192.3 0.4 8.1 38 262 07 48 14 07 49 14 =1206+416 12 32 42 70.7 192.8 0.4 8.4 60 269 07 48 15 07 50 01 NGC4151 12 33 29 68.8 191.9 0.4 7.6 40 269 07 50 01 07 53 01 --- 12 36 30 68.7 193.4 0.4 8.6 180 292 07 50 02 07 53 46 J1209+4119 12 37 14 70.6 195.4 0.4 10.1 37 292 07 53 46 07 54 46 =1206+416 12 38 14 70.5 195.9 0.5 10.4 60 300 07 53 47 07 55 32 NGC4151 12 39 01 68.6 194.8 0.5 9.4 39 300 07 55 32 07 58 32 --- 12 42 01 68.5 196.3 0.5 10.4 180 323 07 55 33 07 59 15 J1209+4119 12 42 44 70.4 198.4 0.5 12.0 36 323 07 59 15 08 00 15 =1206+416 12 43 44 70.3 199.0 0.6 12.4 60 331 07 59 16 08 01 01 NGC4151 12 44 30 68.5 197.6 0.6 11.2 38 331 08 01 01 08 04 01 --- 12 47 31 68.3 199.2 0.6 12.2 180 354 08 01 02 08 04 42 J1209+4119 12 48 12 70.1 201.4 0.6 13.9 34 354 08 04 42 08 05 42 =1206+416 12 49 12 70.1 201.9 0.6 14.3 60 362 08 04 43 08 06 26 NGC4151 12 49 56 68.2 200.4 0.6 12.9 37 362 08 06 26 08 09 26 --- 12 52 57 68.1 201.9 0.7 13.9 180 385 08 06 27 08 10 05 J1209+4119 12 53 36 69.9 204.2 0.7 15.7 32 385 08 10 05 08 11 05 =1206+416 12 54 36 69.8 204.8 0.7 16.1 60 392 08 10 06 08 11 47 NGC4151 12 55 18 68.0 203.1 0.7 14.6 34 392 08 11 47 08 14 47 --- 12 58 19 67.8 204.6 0.8 15.5 180 415 08 11 48 08 15 24 J1209+4119 12 58 55 69.6 207.0 0.8 17.4 29 415 08 15 24 08 16 24 =1206+416 12 59 56 69.5 207.5 0.8 17.8 60 423 08 15 25 Schedule for METSAHOV (Code Mh ) 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 13 00 34 67.7 205.7 0.8 16.2 31 423 08 17 02 08 20 02 --- 13 03 35 67.5 207.2 0.9 17.1 180 446 08 17 03 08 20 39 J1209+4119 13 04 12 69.3 209.7 0.9 19.1 29 446 08 20 39 08 21 39 =1206+416 13 05 12 69.2 210.2 0.9 19.4 60 454 08 20 40 08 22 16 NGC4151 13 05 49 67.4 208.3 0.9 17.7 29 454 08 22 16 08 25 16 --- 13 08 49 67.2 209.7 1.0 18.5 180 477 08 22 17 08 27 22 3C286 13 10 56 60.0 170.9 -0.4 -5.2 81 477 08 27 22 08 29 22 --- 13 12 56 60.0 171.8 -0.3 -4.7 120 492 08 27 23 08 33 14 J1209+4119 13 16 49 68.4 215.8 1.1 22.7 183 492 08 33 14 08 34 14 =1206+416 13 17 49 68.3 216.3 1.1 23.0 60 500 08 33 15 08 34 51 NGC4151 13 18 26 66.6 214.2 1.1 21.1 29 500 08 34 51 08 37 51 --- 13 21 26 66.4 215.5 1.2 21.9 180 523 08 34 52 08 38 27 J1209+4119 13 22 03 68.0 218.3 1.2 24.1 28 523 08 38 27 08 39 27 =1206+416 13 23 03 68.0 218.7 1.2 24.4 60 531 08 38 28 08 40 04 NGC4151 13 23 40 66.2 216.5 1.2 22.5 28 531 08 40 04 08 43 04 --- 13 26 40 66.0 217.8 1.3 23.2 180 554 08 40 05 08 43 44 J1209+4119 13 27 21 67.6 220.7 1.3 25.5 32 554 08 43 44 08 44 44 =1206+416 13 28 21 67.5 221.1 1.3 25.7 60 562 08 43 45 08 45 22 NGC4151 13 28 58 65.8 218.8 1.3 23.7 29 562 08 45 22 08 48 22 --- 13 31 59 65.6 220.1 1.3 24.4 180 585 08 45 23 08 49 06 J1209+4119 13 32 43 67.2 223.0 1.4 26.8 35 585 08 49 06 08 50 06 =1206+416 13 33 43 67.1 223.5 1.4 27.0 60 592 08 49 07 08 50 47 NGC4151 13 34 24 65.4 221.2 1.4 25.0 33 592 08 50 47 08 53 47 --- 13 37 25 65.1 222.4 1.4 25.7 180 615 08 50 48 08 54 34 J1209+4119 13 38 12 66.7 225.4 1.5 28.0 38 615 08 54 34 08 55 34 =1206+416 13 39 12 66.6 225.8 1.5 28.2 60 623 08 54 35 08 56 18 NGC4151 13 39 56 64.9 223.5 1.5 26.2 36 623 08 56 18 08 59 18 --- 13 42 56 64.7 224.7 1.5 26.8 180 646 08 56 19 09 00 07 J1209+4119 13 43 46 66.2 227.7 1.6 29.2 40 646 09 00 07 09 01 07 =1206+416 13 44 46 66.1 228.1 1.6 29.4 60 654 09 00 08 Schedule for METSAHOV (Code Mh ) 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 13 45 36 64.4 225.7 1.6 27.4 42 654 09 01 57 09 04 57 --- 13 48 37 64.2 226.9 1.6 28.0 180 677 09 01 58 09 05 57 J1209+4119 13 49 37 65.6 230.0 1.7 30.4 52 677 09 05 57 09 06 57 =1206+416 13 50 37 65.6 230.4 1.7 30.6 60 685 09 05 58 09 07 45 NGC4151 13 51 25 63.9 228.0 1.7 28.5 39 685 09 07 45 09 10 45 --- 13 54 25 63.6 229.2 1.7 29.1 180 708 09 07 46 09 11 36 J1209+4119 13 55 17 65.1 232.2 1.7 31.4 43 708 09 11 36 09 12 36 =1206+416 13 56 17 65.0 232.6 1.8 31.6 60 715 09 11 37 09 13 25 NGC4151 13 57 06 63.4 230.2 1.8 29.5 40 715 09 13 25 09 16 25 --- 14 00 07 63.1 231.3 1.8 30.1 180 738 09 13 26 09 17 18 J1209+4119 14 00 59 64.5 234.3 1.8 32.4 44 738 09 17 18 09 18 18 =1206+416 14 02 00 64.4 234.7 1.9 32.6 60 746 09 17 19 09 19 07 NGC4151 14 02 49 62.8 232.3 1.9 30.5 41 746 09 19 07 09 22 07 --- 14 05 50 62.5 233.4 1.9 31.0 180 769 09 19 08 09 23 00 J1209+4119 14 06 43 63.9 236.4 1.9 33.4 44 769 09 23 00 09 24 00 =1206+416 14 07 43 63.8 236.8 2.0 33.5 60 777 09 23 01 09 24 50 NGC4151 14 08 33 62.3 234.4 2.0 31.4 42 777 09 24 50 09 27 50 --- 14 11 33 61.9 235.4 2.0 31.9 180 800 09 24 51 09 28 54 J1209+4119 14 12 38 63.3 238.5 2.0 34.3 55 800 09 28 54 09 29 54 =1206+416 14 13 38 63.2 238.8 2.1 34.4 60 808 09 28 55 09 30 51 NGC4151 14 14 35 61.6 236.5 2.1 32.4 48 808 09 30 51 09 33 51 --- 14 17 35 61.3 237.5 2.1 32.8 180 831 09 30 52 09 34 43 J1209+4119 14 18 28 62.7 240.5 2.1 35.1 44 831 09 34 43 09 35 43 =1206+416 14 19 28 62.6 240.8 2.2 35.2 60 838 09 34 44 09 36 33 NGC4151 14 20 18 61.0 238.4 2.1 33.1 42 838 09 36 33 09 39 33 --- 14 23 19 60.7 239.4 2.2 33.5 180 862 09 36 34 09 40 26 J1209+4119 14 24 11 62.1 242.4 2.2 35.8 44 862 09 40 26 09 41 26 =1206+416 14 25 11 62.0 242.7 2.2 35.9 60 869 09 40 27 09 42 16 NGC4151 14 26 02 60.4 240.3 2.2 33.9 42 869 09 42 16 09 45 16 --- 14 29 02 60.1 241.3 2.3 34.3 180 892 09 42 17 Schedule for METSAHOV (Code Mh ) 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 14 29 54 61.4 244.2 2.3 36.5 43 892 09 46 08 09 47 08 =1206+416 14 30 54 61.3 244.5 2.3 36.6 60 900 09 46 09 09 47 57 NGC4151 14 31 44 59.8 242.1 2.3 34.6 41 900 09 47 57 09 49 10 --- 14 32 58 59.7 242.5 2.4 34.7 73 909 09 47 58 09 50 02 J1209+4119 14 33 49 61.0 245.4 2.4 36.9 43 909 09 50 02 09 51 02 =1206+416 14 34 49 60.9 245.7 2.4 37.0 60 917 09 50 03 09 58 00 3C286 14 41 48 58.0 209.2 1.2 16.3 373 917 09 58 00 10 00 00 --- 14 43 49 57.9 210.0 1.2 16.7 120 932 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: 12 Station: METSAHOV 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= 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 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 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 14 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= 707.49 707.49 707.49 707.49 739.49 739.49 739.49 739.49 771.49 771.49 771.49 771.49 803.49 803.49 803.49 803.49 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: 14 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