COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113E 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 Notes: Target: NGC4151 Phase calibrator : J1209+4119 D-terms calibrator : -- Fringe finder : 3C286 Schedule for MEDICINA (Code Mc ) 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 10 Jun 2019 Day 161 --- Next scan frequencies: 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 Next BBC frequencies: 175.49 175.49 175.49 175.49 239.49 239.49 239.49 239.49 303.49 303.49 303.49 303.49 367.49 367.49 367.49 367.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 17 00 00 3C286 11 01 38 57.4 462.7 -2.5 -53.8 0 0 17 00 00 17 02 00 --- 11 03 39 57.7 463.1 -2.5 -53.6 120 31 17 00 01 17 04 20 J1209+4119 11 05 59 77.8 460.0 -1.1 -69.0 96 31 17 04 20 17 06 20 =1206+416 11 07 59 78.1 460.7 -1.0 -68.7 120 62 17 04 21 17 06 20 NGC4151 11 07 59 77.1 468.4 -1.1 -61.0 -14 62 No stop 17 10 20 --- 11 12 00 77.8 470.1 -1.0 -59.9 226 124 17 06 21 17 10 20 J1209+4119 11 12 00 78.8 462.1 -1.0 -68.0 -15 124 No stop 17 12 20 =1206+416 11 14 00 79.2 462.8 -0.9 -67.6 105 155 17 10 21 17 12 20 NGC4151 11 14 00 78.1 471.1 -1.0 -59.3 -15 155 No stop 17 16 20 --- 11 18 01 78.8 473.1 -0.9 -58.0 225 216 17 12 21 17 17 00 J1209+4119 11 18 41 80.0 464.7 -0.9 -66.5 25 216 17 17 00 17 19 00 =1206+416 11 20 41 80.3 465.6 -0.8 -65.9 120 247 17 17 01 17 19 00 NGC4151 11 20 41 79.2 474.5 -0.8 -57.0 -16 247 No stop 17 23 00 --- 11 24 42 79.9 476.9 -0.8 -55.2 224 309 17 19 01 17 23 00 J1209+4119 11 24 42 81.0 467.5 -0.8 -64.7 -16 309 No stop 17 25 00 =1206+416 11 26 42 81.4 468.6 -0.7 -63.9 104 340 17 23 01 17 25 00 NGC4151 11 26 42 80.2 478.2 -0.7 -54.3 -17 340 No stop 17 29 00 --- 11 30 43 80.8 481.0 -0.7 -52.2 223 402 17 25 01 17 29 40 J1209+4119 11 31 23 82.1 471.4 -0.6 -62.0 23 402 17 29 40 17 31 40 =1206+416 11 33 23 82.5 472.8 -0.6 -61.0 120 433 17 29 41 17 31 40 NGC4151 11 33 23 81.2 483.1 -0.6 -50.5 -18 433 No stop 17 35 40 --- 11 37 24 81.8 486.5 -0.6 -47.8 222 495 17 31 41 17 35 40 J1209+4119 11 37 24 83.1 475.8 -0.5 -58.6 -18 495 No stop 17 37 40 =1206+416 11 39 24 83.4 477.5 -0.5 -57.2 102 526 17 35 41 17 37 40 NGC4151 11 39 24 82.1 488.4 -0.5 -46.2 -19 526 No stop 17 41 40 --- 11 43 25 82.6 492.6 -0.5 -42.7 221 587 17 37 41 Schedule for MEDICINA (Code Mc ) 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 10 Jun 2019 Day 161 --- 17 42 20 J1209+4119 11 44 05 84.2 482.1 -0.4 -53.4 22 587 17 42 20 17 44 20 =1206+416 11 46 05 84.5 484.5 -0.4 -51.4 120 618 17 42 21 17 44 20 NGC4151 11 46 05 83.0 495.6 -0.4 -40.1 -19 618 No stop 17 48 20 --- 11 50 06 83.4 500.8 -0.4 -35.6 221 680 17 44 21 17 48 20 J1209+4119 11 50 06 85.0 489.9 -0.3 -46.7 -18 680 No stop 17 50 20 =1206+416 11 52 06 85.3 493.0 -0.3 -43.9 102 711 17 48 21 17 50 20 NGC4151 11 52 06 83.7 503.7 -0.3 -33.1 -19 711 No stop 17 54 20 --- 11 56 07 84.1 509.9 -0.3 -27.5 221 773 17 50 21 17 55 00 J1209+4119 11 56 47 85.9 501.8 -0.2 -35.9 24 773 17 55 00 17 57 00 =1206+416 11 58 48 86.1 506.3 -0.2 -31.7 120 804 17 55 01 17 57 00 NGC4151 11 58 48 84.3 514.5 -0.2 -23.3 -15 804 No stop 18 01 00 --- 12 02 48 84.5 522.0 -0.1 -16.5 225 866 17 57 01 18 01 00 J1209+4119 12 02 48 86.4 516.6 -0.1 -22.1 -11 866 No stop 18 03 00 =1206+416 12 04 49 86.6 522.4 -0.1 -16.6 109 897 18 01 01 18 03 00 NGC4151 12 04 49 84.6 526.0 -0.1 -12.9 -9 897 No stop 18 07 00 --- 12 08 49 84.8 534.3 -0.0 -5.3 231 958 18 03 01 18 07 40 J1209+4119 12 09 29 86.7 537.2 -0.0 -2.7 32 958 18 07 40 18 09 40 =1206+416 12 11 30 86.7 543.8 0.0 3.6 120 989 18 07 41 18 09 40 NGC4151 12 11 30 84.8 540.0 -0.0 -0.0 -9 989 No stop 18 13 40 --- 12 15 30 84.7 548.4 0.1 7.8 231 1051 18 09 41 18 13 40 J1209+4119 12 15 30 86.6 556.4 0.1 15.6 -15 1051 No stop 18 15 40 =1206+416 12 17 31 86.5 562.3 0.1 21.1 105 1082 18 13 41 18 15 40 NGC4151 12 17 31 84.7 552.6 0.1 11.6 -16 1082 No stop 18 19 40 --- 12 21 31 84.5 560.5 0.2 18.8 224 1144 18 15 41 18 20 20 J1209+4119 12 22 11 86.1 574.4 0.2 32.4 19 1144 18 20 20 18 22 20 =1206+416 12 24 12 85.8 578.8 0.2 36.4 120 1175 18 20 21 18 22 20 NGC4151 12 24 12 84.3 565.4 0.2 23.3 -21 1175 No stop 18 26 20 --- 12 28 12 83.9 572.2 0.3 29.4 219 1237 18 22 21 18 26 20 J1209+4119 12 28 12 85.4 586.3 0.3 43.3 -24 1237 No stop 18 28 20 =1206+416 12 30 13 85.1 589.6 0.3 46.2 96 1268 18 26 21 Schedule for MEDICINA (Code Mc ) 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 ---------------------------------------------------------------------------------------- --- Mon 10 Jun 2019 Day 161 --- 18 28 20 NGC4151 12 30 13 83.7 575.3 0.3 32.2 -22 1268 No stop 18 32 20 --- 12 34 13 83.3 580.9 0.4 37.1 218 1329 18 28 21 18 33 00 J1209+4119 12 34 53 84.4 595.9 0.4 51.7 17 1329 18 33 00 18 35 00 =1206+416 12 36 54 84.1 598.2 0.4 53.7 120 1360 18 33 01 18 37 20 3C286 12 39 14 72.5 499.2 -0.9 -32.7 4 1360 18 37 20 18 40 00 --- 12 41 55 72.8 500.8 -0.8 -31.5 160 1402 18 37 21 ---------- Ef out for pointing ---------- 18 43 00 J1209+4119 12 44 55 82.9 605.5 0.6 59.6 37 1402 18 43 00 18 45 00 =1206+416 12 46 55 82.5 607.0 0.6 60.8 120 1432 18 43 01 18 45 00 NGC4151 12 46 55 81.6 594.7 0.6 48.7 -20 1432 No stop 18 48 30 --- 12 50 26 81.1 597.6 0.6 51.0 190 1487 18 45 01 18 49 10 J1209+4119 12 51 06 81.8 609.7 0.7 62.8 20 1487 18 49 10 18 51 10 =1206+416 12 53 06 81.5 610.9 0.7 63.6 120 1517 18 49 11 ---------- Ef back ---------- 18 51 10 NGC4151 12 53 06 80.7 599.6 0.7 52.6 -19 1517 No stop 18 54 40 --- 12 56 37 80.1 602.0 0.8 54.4 191 1572 18 51 11 18 54 40 J1209+4119 12 56 37 80.9 612.8 0.8 64.9 -18 1572 No stop 18 56 40 =1206+416 12 58 37 80.6 613.8 0.8 65.5 102 1603 18 54 41 18 56 40 NGC4151 12 58 37 79.8 603.3 0.8 55.4 -18 1603 No stop 19 00 40 --- 13 02 38 79.2 605.6 0.9 57.1 222 1664 18 56 41 19 01 20 J1209+4119 13 03 18 79.8 615.8 0.9 66.8 23 1664 19 01 20 19 03 20 =1206+416 13 05 18 79.4 616.7 0.9 67.3 120 1695 19 01 21 19 03 20 NGC4151 13 05 18 78.7 607.1 0.9 58.1 -17 1695 No stop 19 07 20 --- 13 09 19 78.1 609.1 1.0 59.4 223 1757 19 03 21 19 07 20 J1209+4119 13 09 19 78.7 618.2 1.0 68.1 -16 1757 No stop 19 09 20 =1206+416 13 11 19 78.4 618.9 1.0 68.5 104 1788 19 07 21 19 09 20 NGC4151 13 11 19 77.7 610.0 1.0 60.0 -16 1788 No stop 19 13 20 --- 13 15 20 77.1 611.8 1.1 61.1 224 1850 19 09 21 19 14 00 J1209+4119 13 16 00 77.6 620.4 1.1 69.2 25 1850 19 14 00 19 16 00 =1206+416 13 18 01 77.2 621.0 1.1 69.4 120 1881 19 14 01 Schedule for MEDICINA (Code Mc ) 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 ---------------------------------------------------------------------------------------- --- Mon 10 Jun 2019 Day 161 --- 19 16 00 NGC4151 13 18 01 76.6 612.9 1.1 61.7 -15 1881 No stop 19 20 00 --- 13 22 01 75.9 614.4 1.2 62.6 225 1943 19 16 01 19 20 00 J1209+4119 13 22 01 76.5 622.2 1.2 69.9 -14 1943 No stop 19 22 00 =1206+416 13 24 02 76.1 622.7 1.2 70.1 106 1974 19 20 01 19 22 00 NGC4151 13 24 02 75.6 615.1 1.2 62.9 -14 1974 No stop 19 26 00 --- 13 28 02 74.9 616.5 1.3 63.6 226 2035 19 22 01 19 26 40 J1209+4119 13 28 42 75.3 623.9 1.3 70.5 26 2035 19 26 40 19 28 40 =1206+416 13 30 43 75.0 624.4 1.3 70.6 120 2066 19 26 41 19 28 40 NGC4151 13 30 43 74.4 617.3 1.3 64.0 -13 2066 No stop 19 32 40 --- 13 34 43 73.7 618.6 1.4 64.6 227 2128 19 28 41 19 32 40 J1209+4119 13 34 43 74.2 625.3 1.4 70.9 -13 2128 No stop 19 34 40 =1206+416 13 36 44 73.9 625.8 1.4 71.0 107 2159 19 32 41 19 34 40 NGC4151 13 36 44 73.4 619.2 1.4 64.8 -13 2159 No stop 19 38 40 --- 13 40 44 72.7 620.3 1.5 65.3 227 2221 19 34 41 19 39 20 J1209+4119 13 41 24 73.1 626.8 1.5 71.2 28 2221 19 39 20 19 41 20 =1206+416 13 43 25 72.7 627.2 1.6 71.2 120 2252 19 39 21 19 41 20 NGC4151 13 43 25 72.2 621.0 1.5 65.5 -12 2252 No stop 19 45 20 --- 13 47 25 71.5 622.0 1.6 65.9 228 2314 19 41 21 19 45 20 J1209+4119 13 47 25 72.0 628.0 1.6 71.3 -12 2314 No stop 19 47 20 =1206+416 13 49 26 71.6 628.4 1.7 71.4 108 2345 19 45 21 19 47 20 NGC4151 13 49 26 71.1 622.5 1.6 66.0 -12 2345 No stop 19 51 20 --- 13 53 26 70.4 623.5 1.7 66.3 228 2406 19 47 21 19 52 00 J1209+4119 13 54 06 70.8 629.2 1.7 71.4 29 2406 19 52 00 19 54 00 =1206+416 13 56 07 70.4 629.6 1.8 71.4 120 2437 19 52 01 19 54 00 NGC4151 13 56 07 69.9 624.1 1.7 66.4 -11 2437 No stop 19 58 00 --- 14 00 07 69.2 625.0 1.8 66.6 229 2499 19 54 01 19 58 00 J1209+4119 14 00 07 69.7 630.3 1.8 71.4 -11 2499 No stop 20 00 00 =1206+416 14 02 08 69.4 630.7 1.9 71.4 109 2530 19 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.K2048 --- 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: 7 Station: MEDICINA Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 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: 3 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 BBC fr= 175.49 175.49 175.49 175.49 239.49 239.49 239.49 239.49 303.49 303.49 303.49 303.49 367.49 367.49 367.49 367.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 3 13 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 30.529205 0.00 39 41 02.10308 * 39 24 21.03100 39 18 09.96813 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 20.765794 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 30.75115 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 01.923103 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 48.76043 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 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 1.717 158.398 J1209+4119 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.933 90.198 3C286 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.078 11.259 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 85.8 J1209+4119 84.7 3C286 104.4 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