COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: H2O megamaser VLBI: a powerful tool to study ejection and accretion Exp. Code: ET038A Schedule Version: 1.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: A. Tarchi Address: INAF - Osservatorio Astronomico di Cagliari Via della Scienza 5 I-09047 Selargius (Cagliari) Italy Phone: +39 070 71180235 EMAIL: andrea.tarchi@inaf.it Fax: Phone during observation: +39 070 71180235 Observing mode: Observations of IC485 at 5 GHz (2048 Mb/s) Notes: phase-cal OFF source = IC485 Schedule for ZELENCHK (Code Zc ) Page 2 H2O megamaser VLBI: a powerful tool to study ejection and accretion 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 ---------------------------------------------------------------------------------------- --- Fri 25 May 2018 Day 145 --- Next scan frequencies: 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 Next BBC frequencies: 442.49 442.49 442.49 442.49 474.49 474.49 474.49 474.49 506.49 506.49 506.49 506.49 538.49 538.49 538.49 538.49 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 12 00 00 DA193 06 58 22 77.9 616.2 1.0 65.9 0 0 12 00 00 12 05 00 --- 07 03 23 77.0 618.0 1.1 66.8 300 38 12 00 01 12 07 20 J0802+2509 07 05 43 67.9 502.9 -1.0 -28.7 0 38 12 07 20 12 10 20 =0759+252 07 08 43 68.2 504.5 -0.9 -27.5 180 62 12 07 21 12 10 20 IC485 07 08 43 69.8 503.8 -0.9 -28.5 -16 62 No stop 12 15 50 --- 07 14 14 70.4 507.0 -0.8 -26.1 314 104 12 10 21 12 16 20 J0802+2509 07 14 44 68.8 507.9 -0.8 -25.1 14 104 12 16 20 12 19 20 =0759+252 07 17 45 69.1 509.6 -0.8 -23.8 180 127 12 16 21 12 19 20 IC485 07 17 45 70.7 509.2 -0.7 -24.5 -16 127 No stop 12 24 50 --- 07 23 16 71.2 512.6 -0.6 -21.8 314 169 12 19 21 12 25 20 J0802+2509 07 23 46 69.6 513.2 -0.7 -21.1 14 169 12 25 20 12 28 20 =0759+252 07 26 46 69.8 515.0 -0.6 -19.7 180 192 12 25 21 12 28 20 IC485 07 26 46 71.5 514.9 -0.6 -20.0 -16 192 No stop 12 33 50 --- 07 32 17 71.9 518.6 -0.5 -17.1 314 235 12 28 21 12 34 20 J0802+2509 07 32 47 70.3 518.8 -0.5 -16.8 14 235 12 34 20 12 37 20 =0759+252 07 35 48 70.5 520.8 -0.5 -15.2 180 258 12 34 21 12 37 20 IC485 07 35 48 72.1 521.1 -0.4 -15.2 -16 258 No stop 12 42 50 --- 07 41 19 72.4 525.0 -0.3 -12.1 314 300 12 37 21 12 43 20 J0802+2509 07 41 49 70.8 524.7 -0.4 -12.1 14 300 12 43 20 12 46 20 =0759+252 07 44 49 70.9 526.8 -0.3 -10.5 180 323 12 43 21 12 46 20 IC485 07 44 49 72.5 527.6 -0.3 -10.0 -16 323 No stop 12 51 50 --- 07 50 20 72.7 531.6 -0.2 -6.7 314 365 12 46 21 12 52 20 J0802+2509 07 50 50 71.1 530.9 -0.2 -7.2 14 365 12 52 20 12 55 20 =0759+252 07 53 51 71.2 533.0 -0.2 -5.6 180 388 12 52 21 12 55 20 IC485 07 53 51 72.8 534.3 -0.1 -4.6 -16 388 No stop 13 00 50 --- 07 59 22 72.9 538.4 -0.0 -1.3 314 431 12 55 21 Schedule for ZELENCHK (Code Zc ) Page 3 H2O megamaser VLBI: a powerful tool to study ejection and accretion 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 ---------------------------------------------------------------------------------------- --- Fri 25 May 2018 Day 145 --- 13 01 20 J0802+2509 07 59 52 71.3 537.2 -0.1 -2.2 14 431 13 01 20 13 04 20 =0759+252 08 02 52 71.3 539.4 -0.0 -0.5 180 454 13 01 21 13 04 20 IC485 08 02 52 72.9 541.1 0.0 0.9 -17 454 No stop 13 09 50 --- 08 08 23 72.8 545.3 0.1 4.3 313 496 13 04 21 13 10 20 J0802+2509 08 08 53 71.3 543.6 0.1 2.9 13 496 13 10 20 13 13 20 =0759+252 08 11 54 71.2 545.7 0.1 4.6 180 519 13 10 21 13 13 20 IC485 08 11 54 72.7 547.9 0.2 6.4 -19 519 No stop 13 18 50 --- 08 17 25 72.6 552.0 0.3 9.7 311 562 13 13 21 13 19 20 J0802+2509 08 17 55 71.1 549.9 0.2 7.9 12 562 13 19 20 13 22 20 =0759+252 08 20 55 71.0 552.0 0.3 9.5 180 585 13 19 21 13 22 20 IC485 08 20 55 72.4 554.6 0.3 11.7 -20 585 No stop 13 27 50 --- 08 26 26 72.1 558.5 0.4 14.9 310 627 13 22 21 13 28 20 J0802+2509 08 26 56 70.7 556.1 0.4 12.8 11 627 13 28 20 13 31 20 =0759+252 08 29 57 70.6 558.1 0.4 14.3 180 650 13 28 21 13 31 20 IC485 08 29 57 71.9 560.9 0.5 16.8 -21 650 No stop 13 36 50 --- 08 35 28 71.5 564.7 0.6 19.7 309 692 13 31 21 13 37 20 J0802+2509 08 35 58 70.2 562.0 0.5 17.4 10 692 13 37 20 13 40 20 =0759+252 08 38 58 70.0 563.9 0.6 18.8 180 715 13 37 21 13 40 20 IC485 08 38 58 71.3 567.0 0.6 21.5 -21 715 No stop 13 45 50 --- 08 44 29 70.8 570.5 0.7 24.2 309 758 13 40 21 13 46 20 J0802+2509 08 44 59 69.5 567.6 0.7 21.6 9 758 13 46 20 13 49 20 =0759+252 08 48 00 69.3 569.4 0.7 23.0 180 781 13 46 21 13 49 20 IC485 08 48 00 70.4 572.6 0.8 25.8 -22 781 No stop 13 54 50 --- 08 53 31 69.9 575.8 0.9 28.2 308 823 13 49 21 13 55 20 J0802+2509 08 54 01 68.7 572.8 0.8 25.6 9 823 13 55 20 13 58 20 =0759+252 08 57 01 68.4 574.5 0.9 26.8 180 846 13 55 21 13 58 20 IC485 08 57 01 69.5 577.8 0.9 29.7 -22 846 No stop 14 03 50 --- 09 02 32 68.9 580.8 1.0 31.9 308 888 13 58 21 14 04 20 J0802+2509 09 03 02 67.8 577.7 1.0 29.2 9 888 14 04 20 14 07 20 =0759+252 09 06 03 67.4 579.3 1.0 30.3 180 912 14 04 21 Schedule for ZELENCHK (Code Zc ) Page 4 H2O megamaser VLBI: a powerful tool to study ejection and accretion 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 ---------------------------------------------------------------------------------------- --- Fri 25 May 2018 Day 145 --- 14 07 20 IC485 09 06 03 68.5 582.6 1.1 33.2 -22 912 No stop 14 12 50 --- 09 11 34 67.8 585.4 1.2 35.1 308 954 14 07 21 14 13 20 J0802+2509 09 12 04 66.7 582.2 1.1 32.4 9 954 14 13 20 14 14 50 =0759+252 09 13 34 66.5 583.0 1.2 32.9 90 965 14 13 21 14 14 50 IC485 09 13 34 67.5 586.3 1.2 35.7 -22 965 No stop 14 17 30 --- 09 16 14 67.1 587.6 1.2 36.6 138 986 14 14 51 14 18 00 J0802+2509 09 16 44 66.1 584.5 1.2 33.9 9 986 14 18 00 14 21 00 =0759+252 09 19 45 65.7 585.8 1.3 34.9 180 1009 14 18 01 14 25 00 DA193 09 23 46 51.8 642.5 3.5 66.6 159 1009 14 25 00 14 30 00 --- 09 28 46 51.0 643.1 3.5 66.3 300 1047 14 25 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess218.C1024 Matching groups in /opt/sched/catalogs/freq_RDBE.dat: kvzr_c 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= 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 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= 4942.49 4942.49 4942.49 4942.49 4974.49 4974.49 4974.49 4974.49 5006.49 5006.49 5006.49 5006.49 5038.49 5038.49 5038.49 5038.49 BBC fr= 442.49 442.49 442.49 442.49 474.49 474.49 474.49 474.49 506.49 506.49 506.49 506.49 538.49 538.49 538.49 538.49 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) * IC485 07 57 16.742657 * 08 00 19.760000 08 01 24.982845 0.00 26 50 21.55620 * 26 42 05.10000 26 39 01.29401 0.00 From catalog imbedded in main SCHED input file. 0552+398 05 52 01.407169 * 05 55 30.805611 05 56 45.071352 0.00 J0555+3948 39 48 21.94581 * 39 48 49.16496 39 48 51.55338 0.00 * DA193 /opt/sched/catalogs/sources.gsfc J0555+39 GSFC 2015a astro solution, unpublished 394383 observations. 0759+252 07 59 40.673049 * 08 02 41.587429 08 03 46.081191 0.25 * J0802+2509 25 17 36.37276 * 25 09 10.89814 25 06 03.51987 0.34 /opt/sched/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 119 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 IC485 sess218.C1024 1 2 3 4 5 6 7 8 9 10 1.328 96.826 DA193 sess218.C1024 1 2 3 4 5 6 7 8 9 10 0.167 13.000 J0802+2509 sess218.C1024 1 2 3 4 5 6 7 8 9 10 0.775 59.850 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) IC485 53.0 DA193 29.6 J0802+2509 53.7 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