COVER INFORMATION Station: ZELENCHK (Code Zc ) Experiment: H2O megamaser VLBI: a powerful tool to study ejection and accretion Exp. Code: ET038B 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 1.6 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 ---------------------------------------------------------------------------------------- --- Mon 28 May 2018 Day 148 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 350.49 350.49 350.49 350.49 382.49 382.49 382.49 382.49 414.49 414.49 414.49 414.49 446.49 446.49 446.49 446.49 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 13 00 00 J0854+2006 08 10 21 64.4 514.6 -0.8 -19.2 0 0 13 00 00 13 06 00 =OJ287 08 16 22 64.9 517.7 -0.7 -16.9 360 46 13 00 01 13 07 10 J0802+2509 08 17 32 71.1 549.7 0.2 7.7 13 46 13 07 10 13 10 10 =0759+252 08 20 33 71.0 551.7 0.3 9.3 180 69 13 07 11 13 10 10 IC485 08 20 33 72.4 554.3 0.3 11.5 -20 69 No stop 13 17 10 --- 08 27 34 72.1 559.3 0.4 15.5 400 123 13 10 11 13 17 40 J0802+2509 08 28 04 70.7 556.8 0.4 13.3 10 123 13 17 40 13 20 40 =0759+252 08 31 05 70.5 558.8 0.5 14.9 180 146 13 17 41 13 20 40 IC485 08 31 05 71.8 561.7 0.5 17.4 -21 146 No stop 13 27 40 --- 08 38 06 71.3 566.4 0.6 21.1 399 200 13 20 41 13 28 10 J0802+2509 08 38 36 70.0 563.6 0.6 18.6 10 200 13 28 10 13 31 10 =0759+252 08 41 36 69.8 565.5 0.6 20.1 180 223 13 28 11 13 31 10 IC485 08 41 36 71.0 568.7 0.7 22.8 -21 223 No stop 13 38 10 --- 08 48 38 70.4 573.0 0.8 26.1 399 277 13 31 11 13 38 40 J0802+2509 08 49 08 69.2 570.0 0.8 23.5 9 277 13 38 40 13 41 40 =0759+252 08 52 08 68.9 571.8 0.8 24.8 180 300 13 38 41 13 41 40 IC485 08 52 08 70.0 575.1 0.8 27.6 -22 300 No stop 13 48 40 --- 08 59 09 69.3 579.0 1.0 30.6 398 354 13 41 41 13 49 10 J0802+2509 08 59 39 68.1 575.9 0.9 27.9 9 354 13 49 10 13 52 10 =0759+252 09 02 40 67.8 577.5 1.0 29.0 180 377 13 49 11 13 52 10 IC485 09 02 40 68.9 580.9 1.0 31.9 -22 377 No stop 13 59 10 --- 09 09 41 68.0 584.4 1.1 34.4 398 431 13 52 11 13 59 40 J0802+2509 09 10 11 66.9 581.3 1.1 31.8 9 431 13 59 40 14 02 40 =0759+252 09 13 12 66.6 582.8 1.2 32.8 180 454 13 59 41 14 02 40 IC485 09 13 12 67.6 586.1 1.2 35.6 -22 454 No stop 14 09 40 --- 09 20 13 66.6 589.4 1.3 37.8 398 508 14 02 41 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 ---------------------------------------------------------------------------------------- --- Mon 28 May 2018 Day 148 --- 14 10 10 J0802+2509 09 20 43 65.6 586.3 1.3 35.2 9 508 14 10 10 14 13 10 =0759+252 09 23 43 65.2 587.6 1.3 36.1 180 531 14 10 11 14 13 10 IC485 09 23 43 66.1 590.9 1.4 38.8 -22 531 No stop 14 20 10 --- 09 30 44 65.1 593.8 1.5 40.7 398 585 14 13 11 14 20 40 J0802+2509 09 31 14 64.2 590.8 1.5 38.1 9 585 14 20 40 14 23 40 =0759+252 09 34 15 63.8 592.0 1.5 38.9 180 608 14 20 41 14 23 40 IC485 09 34 15 64.6 595.2 1.5 41.6 -21 608 No stop 14 30 40 --- 09 41 16 63.6 597.9 1.7 43.2 399 662 14 23 41 14 31 10 J0802+2509 09 41 46 62.7 594.9 1.6 40.7 9 662 14 31 10 14 34 10 =0759+252 09 44 47 62.2 596.0 1.7 41.4 180 685 14 31 11 14 34 10 IC485 09 44 47 63.0 599.1 1.7 43.9 -21 685 No stop 14 41 10 --- 09 51 48 61.9 601.6 1.8 45.2 399 738 14 34 11 14 41 40 J0802+2509 09 52 18 61.1 598.7 1.8 42.9 10 738 14 41 40 14 44 40 =0759+252 09 55 18 60.6 599.7 1.9 43.5 180 762 14 41 41 14 44 40 IC485 09 55 18 61.3 602.7 1.9 45.9 -21 762 No stop 14 51 40 --- 10 02 20 60.2 604.9 2.0 47.0 399 815 14 44 41 14 52 10 J0802+2509 10 02 50 59.4 602.1 2.0 44.8 10 815 14 52 10 14 55 10 =0759+252 10 05 50 59.0 603.1 2.0 45.3 180 838 14 52 11 14 56 40 J0854+2006 10 07 20 62.0 577.8 1.2 28.1 39 838 14 56 40 15 02 40 =OJ287 10 13 21 61.3 580.4 1.3 29.9 360 885 14 56 41 15 04 10 J0802+2509 10 14 52 57.5 605.8 2.2 46.6 40 885 15 04 10 15 07 10 =0759+252 10 17 52 57.0 606.6 2.2 47.0 180 908 15 04 11 15 07 10 IC485 10 17 52 57.6 609.4 2.3 49.1 -20 908 No stop 15 14 10 --- 10 24 53 56.4 611.3 2.4 49.9 400 962 15 07 11 15 14 40 J0802+2509 10 25 23 55.7 608.7 2.4 48.0 10 962 15 14 40 15 17 40 =0759+252 10 28 24 55.2 609.5 2.4 48.3 180 985 15 14 41 15 17 40 IC485 10 28 24 55.8 612.2 2.4 50.3 -20 985 No stop 15 24 40 --- 10 35 25 54.6 613.9 2.6 50.9 400 1038 15 17 41 15 25 10 J0802+2509 10 35 55 53.9 611.4 2.5 49.1 11 1038 15 25 10 15 28 10 =0759+252 10 38 56 53.4 612.2 2.6 49.4 180 1062 15 25 11 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 ---------------------------------------------------------------------------------------- --- Mon 28 May 2018 Day 148 --- 15 28 10 IC485 10 38 56 54.0 614.8 2.6 51.2 -20 1062 No stop 15 35 10 --- 10 45 57 52.8 616.4 2.7 51.7 400 1115 15 28 11 15 35 40 J0802+2509 10 46 27 52.1 614.0 2.7 50.0 11 1115 15 35 40 15 38 40 =0759+252 10 49 27 51.6 614.7 2.8 50.3 180 1138 15 35 41 15 38 40 IC485 10 49 27 52.2 617.2 2.8 52.0 -19 1138 No stop 15 45 40 --- 10 56 28 50.9 618.8 2.9 52.4 401 1192 15 38 41 15 46 10 J0802+2509 10 56 59 50.3 616.4 2.9 50.8 11 1192 15 46 10 15 49 10 =0759+252 10 59 59 49.8 617.1 2.9 51.0 180 1215 15 46 11 15 49 10 IC485 10 59 59 50.3 619.5 3.0 52.6 -19 1215 No stop 15 56 10 --- 11 07 00 49.1 621.0 3.1 52.9 401 1269 15 49 11 15 56 40 J0802+2509 11 07 30 48.4 618.7 3.1 51.4 11 1269 15 56 40 15 59 40 =0759+252 11 10 31 47.9 619.4 3.1 51.6 180 1292 15 56 41 15 59 40 IC485 11 10 31 48.4 621.7 3.2 53.1 -19 1292 No stop 16 06 40 --- 11 17 32 47.2 623.1 3.3 53.3 401 1346 15 59 41 16 07 10 J0802+2509 11 18 02 46.6 620.9 3.2 51.9 12 1346 16 07 10 16 10 10 =0759+252 11 21 02 46.0 621.5 3.3 52.0 180 1369 16 07 11 16 10 10 IC485 11 21 02 46.5 623.8 3.3 53.4 -19 1369 No stop 16 17 10 --- 11 28 04 45.3 625.1 3.4 53.6 401 1423 16 10 11 16 17 40 J0802+2509 11 28 34 44.7 623.0 3.4 52.3 12 1423 16 17 40 16 20 40 =0759+252 11 31 34 44.1 623.6 3.5 52.4 180 1446 16 17 41 16 20 40 IC485 11 31 34 44.7 625.8 3.5 53.7 -18 1446 No stop 16 27 40 --- 11 38 35 43.4 627.1 3.6 53.8 402 1500 16 20 41 16 28 10 J0802+2509 11 39 05 42.8 625.0 3.6 52.6 12 1500 16 28 10 16 31 10 =0759+252 11 42 06 42.3 625.6 3.6 52.6 180 1523 16 28 11 16 31 10 IC485 11 42 06 42.8 627.7 3.7 53.8 -18 1523 No stop 16 38 10 --- 11 49 07 41.5 629.0 3.8 53.9 402 1577 16 31 11 16 38 40 J0802+2509 11 49 37 40.9 627.0 3.8 52.8 12 1577 16 38 40 16 41 40 =0759+252 11 52 38 40.4 627.5 3.8 52.8 180 1600 16 38 41 16 41 40 IC485 11 52 38 40.9 629.6 3.9 53.9 -18 1600 No stop 16 48 40 --- 11 59 39 39.6 630.8 4.0 53.9 402 1654 16 41 41 Schedule for ZELENCHK (Code Zc ) Page 5 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 ---------------------------------------------------------------------------------------- --- Mon 28 May 2018 Day 148 --- 16 49 10 J0802+2509 12 00 09 39.0 628.8 3.9 52.8 12 1654 16 49 10 16 52 20 =0759+252 12 03 19 38.4 629.4 4.0 52.9 190 1678 16 49 11 16 54 00 J0854+2006 12 05 00 44.2 614.3 3.2 47.7 60 1678 16 54 00 17 00 00 =OJ287 12 11 01 43.1 615.6 3.3 48.1 360 1724 16 54 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess218.L1024 Matching groups in /opt/sched/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 ****** Only 251.02 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. 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= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 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: 8 Setup file default. Used with PCAL = off LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 350.49 350.49 350.49 350.49 382.49 382.49 382.49 382.49 414.49 414.49 414.49 414.49 446.49 446.49 446.49 446.49 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: 8 9 10 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 24.945210 0.00 26 50 21.55620 * 26 42 05.10000 26 39 01.22147 0.00 From catalog imbedded in main SCHED input file. 0759+252 07 59 40.673049 * 08 02 41.587429 08 03 46.043757 0.25 * J0802+2509 25 17 36.37276 * 25 09 10.89814 25 06 03.46776 0.34 /opt/sched/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 119 observations. OJ287 08 51 57.250615 * 08 54 48.874926 08 55 50.264191 0.00 * J0854+2006 20 17 58.41743 * 20 06 30.64088 20 02 17.98039 0.00 0851+202 /opt/sched/catalogs/sources.gsfc J0854+20 GSFC 2015a astro solution, unpublished 216540 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.L1024 1 2 3 4 5 6 7 8 11 2.333 116.031 J0802+2509 sess218.L1024 1 2 3 4 5 6 7 8 11 1.103 57.623 J0854+2006 sess218.L1024 1 2 3 4 5 6 7 8 11 0.300 15.500 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 50.0 J0802+2509 50.8 J0854+2006 63.5 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