COVER INFORMATION Station: URUMQI (Code Ur ) 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 URUMQI (Code Ur ) 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: 187.49 187.49 187.49 187.49 219.49 219.49 219.49 219.49 251.49 251.49 251.49 251.49 283.49 283.49 283.49 283.49 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 15 54 28 59.0 257.1 2.4 55.1 0 0 07 00 00 07 02 00 --- 15 56 28 58.6 257.6 2.4 55.3 120 15 07 00 01 07 03 49 J1209+4119 15 58 17 48.6 287.3 3.8 67.1 75 15 07 03 49 07 04 49 =1206+416 15 59 17 48.5 287.4 3.8 67.0 60 23 07 03 50 07 05 36 NGC4151 16 00 04 47.8 284.7 3.8 65.1 40 23 07 05 36 07 08 36 --- 16 03 05 47.2 285.1 3.9 64.9 180 46 07 05 37 07 09 21 J1209+4119 16 03 50 47.7 287.9 3.9 66.7 39 46 07 09 21 07 10 21 =1206+416 16 04 50 47.5 288.0 3.9 66.6 60 54 07 09 22 07 11 08 NGC4151 16 05 38 46.8 285.4 3.9 64.7 40 54 07 11 08 07 14 08 --- 16 08 38 46.3 285.8 4.0 64.5 180 77 07 11 09 07 14 54 J1209+4119 16 09 24 46.7 288.5 4.0 66.2 39 77 07 14 54 07 15 54 =1206+416 16 10 24 46.6 288.6 4.0 66.1 60 85 07 14 55 07 16 41 NGC4151 16 11 12 45.8 286.1 4.0 64.3 41 85 07 16 41 07 19 41 --- 16 14 12 45.3 286.4 4.0 64.1 180 108 07 16 42 07 20 27 J1209+4119 16 14 58 45.8 289.1 4.1 65.7 39 108 07 20 27 07 21 27 =1206+416 16 15 58 45.6 289.3 4.1 65.6 60 115 07 20 28 07 22 15 NGC4151 16 16 46 44.8 286.7 4.1 63.9 41 115 07 22 15 07 25 15 --- 16 19 47 44.3 287.1 4.1 63.7 180 138 07 22 16 07 26 01 J1209+4119 16 20 33 44.8 289.8 4.2 65.2 39 138 07 26 01 07 27 01 =1206+416 16 21 33 44.6 289.9 4.2 65.1 60 146 07 26 02 07 27 48 NGC4151 16 22 21 43.9 287.4 4.2 63.5 41 146 07 27 48 07 30 48 --- 16 25 21 43.4 287.8 4.2 63.3 180 169 07 27 49 07 31 34 J1209+4119 16 26 07 43.9 290.4 4.3 64.8 39 169 07 31 34 07 32 34 =1206+416 16 27 07 43.7 290.5 4.3 64.7 60 177 07 31 35 07 33 22 NGC4151 16 27 56 42.9 288.1 4.3 63.1 41 177 07 33 22 07 36 22 --- 16 30 56 42.4 288.4 4.3 62.8 180 200 07 33 23 Schedule for URUMQI (Code Ur ) 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 16 31 42 42.9 291.0 4.4 64.3 39 200 07 37 08 07 38 08 =1206+416 16 32 42 42.8 291.1 4.4 64.2 60 208 07 37 09 07 38 56 NGC4151 16 33 30 42.0 288.7 4.4 62.6 41 208 07 38 56 07 41 56 --- 16 36 31 41.4 289.1 4.4 62.4 180 231 07 38 57 07 42 42 J1209+4119 16 37 16 42.0 291.6 4.4 63.8 39 231 07 42 42 07 43 42 =1206+416 16 38 16 41.8 291.7 4.5 63.7 60 238 07 42 43 07 44 29 NGC4151 16 39 04 41.0 289.4 4.5 62.2 41 238 07 44 29 07 47 29 --- 16 42 05 40.5 289.8 4.5 62.0 180 262 07 44 30 07 48 14 J1209+4119 16 42 50 41.0 292.2 4.5 63.3 39 262 07 48 14 07 49 14 =1206+416 16 43 50 40.9 292.4 4.6 63.2 60 269 07 48 15 07 50 01 NGC4151 16 44 37 40.1 290.1 4.6 61.7 41 269 07 50 01 07 53 01 --- 16 47 38 39.5 290.4 4.6 61.5 180 292 07 50 02 07 53 46 J1209+4119 16 48 22 40.1 292.9 4.6 62.8 38 292 07 53 46 07 54 46 =1206+416 16 49 22 40.0 293.0 4.7 62.7 60 300 07 53 47 07 55 32 NGC4151 16 50 09 39.1 290.7 4.6 61.3 40 300 07 55 32 07 58 32 --- 16 53 10 38.6 291.1 4.7 61.0 180 323 07 55 33 07 59 15 J1209+4119 16 53 53 39.2 293.5 4.7 62.2 37 323 07 59 15 08 00 15 =1206+416 16 54 53 39.0 293.6 4.7 62.1 60 331 07 59 16 08 01 01 NGC4151 16 55 39 38.2 291.4 4.7 60.8 39 331 08 01 01 08 04 01 --- 16 58 39 37.7 291.8 4.8 60.6 180 354 08 01 02 08 04 42 J1209+4119 16 59 20 38.3 294.1 4.8 61.7 35 354 08 04 42 08 05 42 =1206+416 17 00 21 38.1 294.2 4.8 61.6 60 362 08 04 43 08 06 26 NGC4151 17 01 05 37.3 292.0 4.8 60.4 38 362 08 06 26 08 09 26 --- 17 04 05 36.8 292.4 4.9 60.1 180 385 08 06 27 08 10 05 J1209+4119 17 04 45 37.4 294.7 4.9 61.2 33 385 08 10 05 08 11 05 =1206+416 17 05 45 37.2 294.8 4.9 61.1 60 392 08 10 06 08 11 47 NGC4151 17 06 27 36.4 292.7 4.9 59.9 36 392 08 11 47 08 14 47 --- 17 09 27 35.9 293.1 5.0 59.6 180 415 08 11 48 08 15 24 J1209+4119 17 10 04 36.5 295.3 5.0 60.7 30 415 08 15 24 08 16 24 =1206+416 17 11 04 36.4 295.4 5.0 60.6 60 423 08 15 25 Schedule for URUMQI (Code Ur ) 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 17 11 43 35.5 293.3 5.0 59.4 33 423 08 17 02 08 20 02 --- 17 14 43 35.0 293.7 5.1 59.2 180 446 08 17 03 08 20 39 J1209+4119 17 15 20 35.7 295.9 5.1 60.2 31 446 08 20 39 08 21 39 =1206+416 17 16 20 35.5 296.1 5.1 60.1 60 454 08 20 40 08 22 16 NGC4151 17 16 57 34.6 294.0 5.1 59.0 30 454 08 22 16 08 25 16 --- 17 19 58 34.1 294.3 5.1 58.7 180 477 08 22 17 08 27 22 3C286 17 22 05 43.2 273.8 3.8 57.1 102 477 08 27 22 08 29 22 --- 17 24 05 42.8 274.2 3.9 57.1 120 492 08 27 23 08 33 14 J1209+4119 17 27 57 33.6 297.4 5.3 58.9 205 492 08 33 14 08 34 14 =1206+416 17 28 57 33.5 297.5 5.3 58.8 60 500 08 33 15 08 34 51 NGC4151 17 29 34 32.5 295.5 5.3 57.8 31 500 08 34 51 08 37 51 --- 17 32 35 32.0 295.9 5.4 57.6 180 523 08 34 52 08 38 27 J1209+4119 17 33 11 32.8 298.0 5.4 58.4 31 523 08 38 27 08 39 27 =1206+416 17 34 11 32.6 298.1 5.4 58.3 60 531 08 38 28 08 40 04 NGC4151 17 34 48 31.7 296.1 5.4 57.3 31 531 08 40 04 08 43 04 --- 17 37 49 31.2 296.5 5.4 57.1 180 554 08 40 05 08 43 44 J1209+4119 17 38 29 31.9 298.6 5.5 57.9 34 554 08 43 44 08 44 44 =1206+416 17 39 29 31.8 298.7 5.5 57.8 60 562 08 43 45 08 45 22 NGC4151 17 40 07 30.8 296.8 5.5 56.8 32 562 08 45 22 08 48 22 --- 17 43 07 30.3 297.2 5.5 56.6 180 585 08 45 23 08 49 06 J1209+4119 17 43 51 31.1 299.3 5.6 57.3 38 585 08 49 06 08 50 06 =1206+416 17 44 52 30.9 299.4 5.6 57.2 60 592 08 49 07 08 50 47 NGC4151 17 45 33 29.9 297.5 5.6 56.3 35 592 08 50 47 08 53 47 --- 17 48 33 29.5 297.8 5.6 56.0 180 615 08 50 48 08 54 34 J1209+4119 17 49 20 30.2 299.9 5.7 56.8 41 615 08 54 34 08 55 34 =1206+416 17 50 20 30.1 300.0 5.7 56.6 60 623 08 54 35 08 56 18 NGC4151 17 51 04 29.1 298.1 5.7 55.8 38 623 08 56 18 08 59 18 --- 17 54 05 28.6 298.5 5.7 55.5 180 646 08 56 19 09 00 07 J1209+4119 17 54 54 29.3 300.6 5.7 56.2 43 646 09 00 07 09 01 07 =1206+416 17 55 54 29.2 300.7 5.8 56.1 60 654 09 00 08 Schedule for URUMQI (Code Ur ) 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 17 56 44 28.2 298.9 5.8 55.2 44 654 09 01 57 09 04 57 --- 17 59 45 27.7 299.2 5.8 54.9 180 677 09 01 58 09 05 57 J1209+4119 18 00 45 28.4 301.3 5.8 55.5 54 677 09 05 57 09 06 57 =1206+416 18 01 45 28.3 301.4 5.9 55.4 60 685 09 05 58 09 07 45 NGC4151 18 02 33 27.2 299.6 5.9 54.6 42 685 09 07 45 09 10 45 --- 18 05 34 26.8 300.0 5.9 54.3 180 708 09 07 46 09 11 36 J1209+4119 18 06 26 27.6 302.0 5.9 54.9 46 708 09 11 36 09 12 36 =1206+416 18 07 26 27.4 302.1 6.0 54.8 60 715 09 11 37 09 13 25 NGC4151 18 08 15 26.3 300.3 5.9 54.1 43 715 09 13 25 09 16 25 --- 18 11 15 25.9 300.7 6.0 53.8 180 738 09 13 26 09 17 18 J1209+4119 18 12 08 26.7 302.7 6.0 54.3 46 738 09 17 18 09 18 18 =1206+416 18 13 08 26.5 302.8 6.0 54.2 60 746 09 17 19 09 19 07 NGC4151 18 13 58 25.4 301.0 6.0 53.5 44 746 09 19 07 09 22 07 --- 18 16 58 25.0 301.4 6.1 53.2 180 769 09 19 08 09 23 00 J1209+4119 18 17 51 25.8 303.4 6.1 53.7 47 769 09 23 00 09 24 00 =1206+416 18 18 51 25.7 303.5 6.1 53.6 60 777 09 23 01 09 24 50 NGC4151 18 19 41 24.6 301.8 6.1 52.9 44 777 09 24 50 09 27 50 --- 18 22 42 24.1 302.2 6.2 52.6 180 800 09 24 51 09 28 54 J1209+4119 18 23 46 24.9 304.1 6.2 53.0 58 800 09 28 54 09 29 54 =1206+416 18 24 46 24.8 304.2 6.2 52.9 60 808 09 28 55 09 30 51 NGC4151 18 25 43 23.6 302.5 6.2 52.2 51 808 09 30 51 09 33 51 --- 18 28 44 23.2 302.9 6.3 51.9 180 831 09 30 52 09 34 43 J1209+4119 18 29 36 24.0 304.8 6.3 52.4 47 831 09 34 43 09 35 43 =1206+416 18 30 36 23.9 305.0 6.3 52.2 60 838 09 34 44 09 36 33 NGC4151 18 31 27 22.8 303.3 6.3 51.6 44 838 09 36 33 09 39 33 --- 18 34 27 22.3 303.7 6.4 51.3 180 862 09 36 34 09 40 26 J1209+4119 18 35 20 23.2 305.6 6.4 51.7 46 862 09 40 26 09 41 26 =1206+416 18 36 20 23.0 305.7 6.4 51.6 60 869 09 40 27 09 42 16 NGC4151 18 37 10 21.9 304.0 6.4 51.0 44 869 09 42 16 09 45 16 --- 18 40 11 21.4 304.4 6.5 50.7 180 892 09 42 17 Schedule for URUMQI (Code Ur ) 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 18 41 03 22.4 306.3 6.5 51.0 46 892 09 46 08 09 47 08 =1206+416 18 42 03 22.2 306.4 6.5 50.9 60 900 09 46 09 09 47 57 NGC4151 18 42 53 21.0 304.8 6.5 50.4 44 900 09 47 57 09 49 10 --- 18 44 06 20.9 304.9 6.5 50.2 73 909 09 47 58 09 50 02 J1209+4119 18 44 58 21.8 306.8 6.6 50.6 46 909 09 50 02 09 51 02 =1206+416 18 45 58 21.6 306.9 6.6 50.5 60 917 09 50 03 09 58 00 3C286 18 52 57 27.0 287.4 5.3 53.4 393 917 09 58 00 10 00 00 --- 18 54 57 26.7 287.7 5.4 53.3 120 932 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: 13 Station: URUMQI 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= 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 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 = A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 A2 C1 The following frequency sets based on these setups were used. Frequency Set: 7 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= 187.49 187.49 187.49 187.49 219.49 219.49 219.49 219.49 251.49 251.49 251.49 251.49 283.49 283.49 283.49 283.49 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: 7 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