COVER INFORMATION Station: IRBENE (Code Ir ) Experiment: 6.7GHz CH3OH maser polarization towards massive protostars. II. Exp. Code: ES072N Schedule Version: 2.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: G. Surcis Address: Joint Institute for VLBI ERIC Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31 (0)521-596508 EMAIL: surcis@jive.nl Fax: +31 (0)521-596539 Phone during observation: +31 (0)521-596508 Observing mode: Polarization observations of 1 source at 6.7 GHz (32 Mb/s) Notes: phase-cal OFF source = G31.28+0.06 Schedule for IRBENE (Code Ir ) Page 2 6.7GHz CH3OH maser polarization towards massive protostars. II. 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 ---------------------------------------------------------------------------------------- --- Tue 20 Oct 2015 Day 293 --- Next scan frequencies: 6664.85 6664.85 6664.85 6664.85 Next BBC frequencies: 764.85 764.85 764.85 764.85 Next scan bandwidths: 2.00 2.00 2.00 2.00 13 00 00 J2202+4216 16 22 07 36.9-292.9 -5.7 -42.0 0 0 13 00 00 13 10 00 =VR422201 16 32 08 38.2-291.1 -5.5 -42.6 600 2 13 00 01 13 13 50 G31.28+0.06 16 35 59 25.3-217.3 -2.2 -19.0 191 2 13 13 50 13 23 50 --- 16 46 00 26.1-214.7 -2.1 -17.8 600 5 13 13 51 13 24 20 G31.28+0.06 16 46 31 26.1-214.6 -2.0 -17.7 27 5 13 24 20 13 34 20 --- 16 56 32 26.9-211.9 -1.9 -16.5 600 7 13 24 21 13 34 50 G31.28+0.06 16 57 02 26.9-211.8 -1.9 -16.4 27 7 13 34 50 13 44 50 --- 17 07 04 27.6-209.0 -1.7 -15.1 600 10 13 34 51 13 45 20 G31.28+0.06 17 07 34 27.6-208.9 -1.7 -15.0 27 10 13 45 20 13 55 20 --- 17 17 36 28.3-206.2 -1.5 -13.7 600 12 13 45 21 13 59 20 J2202+4216 17 21 36 44.5-282.4 -4.7 -45.2 199 12 13 59 20 14 09 20 =VR422201 17 31 38 45.8-280.5 -4.5 -45.5 600 14 13 59 21 14 19 10 J1331+3030 17 41 30 39.9 -94.9 4.2 38.3 495 14 14 19 10 14 29 00 =3C286 17 51 21 38.6 -92.7 4.3 38.4 590 17 14 19 11 14 29 30 J1331+3030 17 51 51 38.5 -92.6 4.3 38.4 27 17 14 29 30 14 39 30 =3C286 18 01 53 37.2 -90.5 4.5 38.5 600 19 14 29 31 14 45 30 G31.28+0.06 18 07 54 30.5-191.9 -0.7 -6.4 306 19 14 45 30 14 55 20 --- 18 17 46 30.7-189.1 -0.5 -4.9 590 22 14 45 31 14 55 50 G31.28+0.06 18 18 16 30.7-189.0 -0.5 -4.8 27 22 14 55 50 15 05 50 --- 18 28 17 30.9-186.0 -0.3 -3.2 600 24 14 55 51 15 10 10 J2202+4216 18 32 38 54.0-268.4 -3.5 -46.5 215 24 15 10 10 15 20 10 =VR422201 18 42 40 55.3-266.2 -3.3 -46.4 600 26 15 10 11 15 24 40 G31.28+0.06 18 47 10 31.0-180.5 -0.0 -0.3 225 26 15 24 40 15 34 40 --- 18 57 12 31.0-177.6 0.1 1.3 600 29 15 24 41 15 35 10 G31.28+0.06 18 57 42 31.0-177.5 0.1 1.4 27 29 15 35 10 15 45 10 --- 19 07 44 30.9-174.5 0.3 2.9 600 31 15 35 11 15 45 40 G31.28+0.06 19 08 14 30.9-174.4 0.3 3.0 27 31 15 45 40 15 55 40 --- 19 18 15 30.7-171.5 0.5 4.6 600 34 15 45 41 Schedule for IRBENE (Code Ir ) Page 3 6.7GHz CH3OH maser polarization towards massive protostars. II. 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 ---------------------------------------------------------------------------------------- --- Tue 20 Oct 2015 Day 293 --- 15 56 10 G31.28+0.06 19 18 46 30.7-171.3 0.5 4.6 27 34 15 56 10 16 04 10 --- 19 26 47 30.5-169.0 0.6 5.9 480 35 15 56 11 16 08 50 J2202+4216 19 31 28 61.8-254.0 -2.5 -44.3 234 35 16 08 50 16 18 50 =VR422201 19 41 29 63.1-251.2 -2.4 -43.4 600 38 16 08 51 16 23 40 G31.28+0.06 19 46 20 29.9-163.4 1.0 8.8 244 38 16 23 40 16 33 40 --- 19 56 22 29.5-160.6 1.1 10.3 600 40 16 23 41 16 34 10 G31.28+0.06 19 56 52 29.5-160.4 1.1 10.4 27 40 16 34 10 16 44 10 --- 20 06 53 29.0-157.6 1.3 11.8 600 43 16 34 11 16 44 40 G31.28+0.06 20 07 23 29.0-157.5 1.3 11.9 27 43 16 44 40 16 54 40 --- 20 17 25 28.4-154.7 1.5 13.3 600 45 16 44 41 16 55 10 G31.28+0.06 20 17 55 28.4-154.5 1.5 13.3 27 45 16 55 10 17 05 10 --- 20 27 57 27.8-151.8 1.6 14.7 600 48 16 55 11 17 10 10 J2202+4216 20 32 58 69.2-233.0 -1.5 -35.4 255 48 17 10 10 17 20 10 =VR422201 20 42 59 70.2-228.6 -1.3 -33.0 600 50 17 10 11 17 25 20 G31.28+0.06 20 48 10 26.4-146.3 2.0 17.3 266 50 17 25 20 17 35 20 --- 20 58 12 25.6-143.7 2.2 18.5 600 52 17 25 21 17 35 50 G31.28+0.06 20 58 42 25.6-143.5 2.2 18.6 27 52 17 35 50 17 45 50 --- 21 08 44 24.8-140.9 2.3 19.8 600 55 17 35 51 17 46 20 G31.28+0.06 21 09 14 24.7-140.8 2.3 19.8 27 55 17 46 20 17 56 20 --- 21 19 15 23.8-138.2 2.5 21.0 600 57 17 46 21 17 56 50 G31.28+0.06 21 19 45 23.8-138.1 2.5 21.0 27 57 17 56 50 18 06 50 --- 21 29 47 22.9-135.6 2.7 22.1 600 60 17 56 51 18 12 00 J2202+4216 21 34 58 74.2-199.6 -0.5 -14.1 273 60 18 12 00 18 22 00 =VR422201 21 44 59 74.5-192.8 -0.3 -9.3 600 62 18 12 01 18 25 00 J2136+0041 21 48 00 33.2-176.9 0.2 1.7 156 62 18 25 00 18 34 50 =2134+00 21 57 52 33.1-173.9 0.3 3.3 590 64 18 25 01 18 37 50 G31.28+0.06 22 00 52 19.8-127.9 3.2 25.1 154 64 18 37 50 18 47 40 --- 22 10 44 18.7-125.6 3.4 25.9 590 67 18 37 51 18 48 10 G31.28+0.06 22 11 14 18.7-125.4 3.4 25.9 27 67 18 48 10 18 57 10 --- 22 20 15 17.7-123.3 3.5 26.6 540 69 18 48 11 Schedule for IRBENE (Code Ir ) Page 4 6.7GHz CH3OH maser polarization towards massive protostars. II. 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 ---------------------------------------------------------------------------------------- --- Tue 20 Oct 2015 Day 293 --- 18 57 40 G31.28+0.06 22 20 45 17.6-123.2 3.5 26.7 27 69 18 57 40 19 06 40 --- 22 29 47 16.6-121.1 3.7 27.4 540 71 18 57 41 19 11 30 J2202+4216 22 34 38 74.0-158.6 0.5 15.4 258 71 19 11 30 19 20 10 =VR422201 22 43 19 73.5-153.1 0.7 19.2 520 73 19 11 31 19 25 00 G31.28+0.06 22 48 10 14.4-116.9 4.0 28.6 258 73 19 25 00 19 35 00 --- 22 58 11 13.2-114.6 4.2 29.2 600 75 19 25 01 19 35 30 G31.28+0.06 22 58 42 13.1-114.5 4.2 29.2 27 75 19 35 30 19 45 30 --- 23 08 43 11.9-112.3 4.3 29.8 600 78 19 35 31 19 50 00 J2202+4216 23 13 14 71.2-136.5 1.2 30.0 237 78 19 50 00 20 00 00 =VR422201 23 23 16 70.3-131.7 1.3 32.8 600 80 19 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess315.M32 --- 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: 10 Station: IRBENE Total bit rate: 32 Format: MARK5B Bits per sample: 2 Sample rate: 4.000 Number of channels: 4 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 5900.00 5900.00 5900.00 5900.00 Net SB= U U U U IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 5 2 6 BBC SB= U U U U IF = A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 6 Based on FREQ, BW, and/or DOPPLER in schedule. Used with PCAL = off LO sum= 6664.85 6664.85 6664.85 6664.85 BBC fr= 764.85 764.85 764.85 764.85 Bandwd= 2.00 2.00 2.00 2.00 Matching frequency sets: 6 9 Track assignments are: track1= 2, 6, 4, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * G31.28+0.06 18 45 36.925679 * 18 48 12.390000 18 49 01.013795 0.00 -01 29 46.32360 *-01 26 22.60000 -01 25 00.45257 0.00 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 110.00 110.00 110.00 110.00 3C286 13 28 49.657758 * 13 31 08.288051 13 31 50.165104 0.18 * J1331+3030 30 45 58.64059 * 30 30 32.95924 30 25 50.31469 0.17 1328+307 ../sources.gsfc.2015feb J1331+30 GSFC 2015a astro solution, unpublished 225 observations. Doppler based on other sources. 2134+00 21 34 05.207371 * 21 36 38.586306 21 37 27.468963 0.73 * J2136+0041 00 28 25.07998 * 00 41 54.21280 00 46 23.52804 1.22 2134+004 ../sources.gsfc.2015feb J2136+00 GSFC 2015a astro solution, unpublished 27867 observations. Doppler based on other sources. VR422201 22 00 39.362505 * 22 02 43.291372 22 03 23.794211 0.00 * J2202+4216 42 02 08.59077 * 42 16 39.97990 42 21 36.68770 0.00 BLLAC ../sources.gsfc.2015feb 2200+420 GSFC 2015a astro solution, unpublished 51226 observations. J2202+42 Doppler based on other sources. 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 G31.28+0.06sess315.M32 1 2 3 4 5 6 7 10 3.761 169.250 J1331+3030 sess315.M32 1 2 3 4 5 6 7 10 0.331 14.875 J2136+0041 sess315.M32 1 2 3 4 5 6 7 10 0.164 7.375 J2202+4216 sess315.M32 1 2 3 4 5 6 7 10 1.311 54.700 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) G31.28+0.06 77.2 J1331+3030 40.9 J2136+0041 119.0 J2202+4216 123.2 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