COVER INFORMATION Station: ONSALA85 (Code O8 ) 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 ONSALA85 (Code O8 ) 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: 842.49 842.49 842.49 842.49 874.49 874.49 874.49 874.49 906.49 906.49 906.49 906.49 938.49 938.49 938.49 938.49 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 04 59 46 70.1 146.2 -0.9 0.0 0 0 12 00 00 12 05 00 --- 05 04 47 70.5 148.8 -0.9 0.0 300 39 12 00 01 12 07 20 J0802+2509 05 07 08 45.0 116.8 -2.9 0.0 24 39 12 07 20 12 10 20 =0759+252 05 10 08 45.4 117.6 -2.9 0.0 180 62 12 07 21 12 10 20 IC485 05 10 08 47.0 117.1 -2.9 0.0 -16 62 No stop 12 15 50 --- 05 15 39 47.6 118.6 -2.8 0.0 314 104 12 10 21 12 16 20 J0802+2509 05 16 09 46.1 119.3 -2.8 0.0 14 104 12 16 20 12 19 20 =0759+252 05 19 10 46.5 120.1 -2.7 0.0 180 128 12 16 21 12 19 20 IC485 05 19 10 48.0 119.6 -2.7 0.0 -16 128 No stop 12 24 50 --- 05 24 40 48.7 121.2 -2.6 0.0 314 170 12 19 21 12 25 20 J0802+2509 05 25 10 47.1 121.8 -2.6 0.0 14 170 12 25 20 12 28 20 =0759+252 05 28 11 47.5 122.7 -2.6 0.0 180 193 12 25 21 12 28 20 IC485 05 28 11 49.1 122.2 -2.6 0.0 -16 193 No stop 12 33 50 --- 05 33 42 49.7 123.8 -2.5 0.0 314 236 12 28 21 12 34 20 J0802+2509 05 34 12 48.2 124.5 -2.5 0.0 14 236 12 34 20 12 37 20 =0759+252 05 37 12 48.5 125.4 -2.4 0.0 180 259 12 34 21 12 37 20 IC485 05 37 12 50.1 124.9 -2.4 0.0 -16 259 No stop 12 42 50 --- 05 42 43 50.7 126.6 -2.3 0.0 314 301 12 37 21 12 43 20 J0802+2509 05 43 13 49.1 127.2 -2.3 0.0 14 301 12 43 20 12 46 20 =0759+252 05 46 14 49.5 128.1 -2.3 0.0 180 325 12 43 21 12 46 20 IC485 05 46 14 51.1 127.7 -2.3 0.0 -16 325 No stop 12 51 50 --- 05 51 45 51.7 129.4 -2.2 0.0 314 367 12 46 21 12 52 20 J0802+2509 05 52 15 50.1 130.0 -2.2 0.0 14 367 12 52 20 12 55 20 =0759+252 05 55 15 50.4 130.9 -2.1 0.0 180 390 12 52 21 12 55 20 IC485 05 55 15 52.0 130.5 -2.1 0.0 -16 390 No stop 13 00 50 --- 06 00 46 52.6 132.3 -2.0 0.0 314 433 12 55 21 Schedule for ONSALA85 (Code O8 ) 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 06 01 16 51.0 132.8 -2.0 0.0 14 433 13 01 20 13 04 20 =0759+252 06 04 17 51.3 133.8 -2.0 0.0 180 456 13 01 21 13 04 20 IC485 06 04 17 52.9 133.5 -2.0 0.0 -16 456 No stop 13 09 50 --- 06 09 48 53.5 135.4 -1.9 0.0 314 499 13 04 21 13 10 20 J0802+2509 06 10 18 51.9 135.8 -1.9 0.0 14 499 13 10 20 13 13 20 =0759+252 06 13 18 52.2 136.8 -1.8 0.0 180 522 13 10 21 13 13 20 IC485 06 13 18 53.8 136.6 -1.8 0.0 -16 522 No stop 13 18 50 --- 06 18 49 54.3 138.5 -1.7 0.0 314 564 13 13 21 13 19 20 J0802+2509 06 19 19 52.7 138.9 -1.7 0.0 14 564 13 19 20 13 22 20 =0759+252 06 22 20 53.0 139.9 -1.7 0.0 180 587 13 19 21 13 22 20 IC485 06 22 20 54.6 139.7 -1.7 0.0 -16 587 No stop 13 27 50 --- 06 27 51 55.1 141.7 -1.6 0.0 314 630 13 22 21 13 28 20 J0802+2509 06 28 21 53.5 142.0 -1.6 0.0 14 630 13 28 20 13 31 20 =0759+252 06 31 21 53.7 143.1 -1.5 0.0 180 653 13 28 21 13 31 20 IC485 06 31 21 55.4 143.0 -1.5 0.0 -16 653 No stop 13 36 50 --- 06 36 52 55.8 145.0 -1.4 0.0 314 696 13 31 21 13 37 20 J0802+2509 06 37 22 54.2 145.3 -1.4 0.0 14 696 13 37 20 13 40 20 =0759+252 06 40 23 54.4 146.4 -1.4 0.0 180 719 13 37 21 13 40 20 IC485 06 40 23 56.1 146.3 -1.4 0.0 -16 719 No stop 13 45 50 --- 06 45 54 56.5 148.4 -1.3 0.0 314 761 13 40 21 13 46 20 J0802+2509 06 46 24 54.9 148.6 -1.3 0.0 14 761 13 46 20 13 49 20 =0759+252 06 49 24 55.1 149.7 -1.2 0.0 180 785 13 46 21 13 49 20 IC485 06 49 24 56.7 149.8 -1.2 0.0 -16 785 No stop 13 54 50 --- 06 54 55 57.1 151.9 -1.1 0.0 314 827 13 49 21 13 55 20 J0802+2509 06 55 25 55.5 152.0 -1.1 0.0 14 827 13 55 20 13 58 20 =0759+252 06 58 26 55.7 153.2 -1.1 0.0 180 850 13 55 21 13 58 20 IC485 06 58 26 57.3 153.3 -1.0 0.0 -16 850 No stop 14 03 50 --- 07 03 57 57.6 155.5 -1.0 0.0 314 893 13 58 21 14 04 20 J0802+2509 07 04 27 56.0 155.5 -1.0 0.0 14 893 14 04 20 14 07 20 =0759+252 07 07 27 56.2 156.7 -0.9 0.0 180 916 14 04 21 Schedule for ONSALA85 (Code O8 ) 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 07 07 27 57.8 157.0 -0.9 0.0 -16 916 No stop 14 12 50 --- 07 12 58 58.1 159.2 -0.8 0.0 314 958 14 07 21 14 13 20 J0802+2509 07 13 28 56.5 159.1 -0.8 0.0 14 958 14 13 20 14 14 50 =0759+252 07 14 58 56.5 159.7 -0.8 0.0 90 970 14 13 21 14 14 50 IC485 07 14 58 58.2 160.1 -0.8 0.0 -16 970 No stop 14 17 30 --- 07 17 39 58.3 161.2 -0.7 0.0 144 991 14 14 51 14 18 00 J0802+2509 07 18 09 56.7 161.0 -0.8 0.0 14 991 14 18 00 14 21 00 =0759+252 07 21 09 56.8 162.2 -0.7 0.0 180 1014 14 18 01 14 25 00 DA193 07 25 10 67.4 228.6 1.5 0.0 121 1014 14 25 00 14 30 00 --- 07 30 11 66.8 230.7 1.6 0.0 300 1052 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 --- 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: ONSALA85 Total bit rate: 1024 Format: VDIF 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= 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 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: 6 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= 842.49 842.49 842.49 842.49 874.49 874.49 874.49 874.49 906.49 906.49 906.49 906.49 938.49 938.49 938.49 938.49 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: 6 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) * 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