COVER INFORMATION Station: WSTRBORK (Code Wb ) 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 WSTRBORK (Code Wb ) 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: 400.85 400.85 400.85 400.85 Next scan bandwidths: 2.00 2.00 2.00 2.00 13 13 50 G31.28+0.06 15 34 56 22.3 125.9 -3.2 0.0 0 0 13 13 50 13 23 50 --- 15 44 57 23.5 128.3 -3.1 0.0 600 2 13 13 51 13 24 20 G31.28+0.06 15 45 27 23.6 128.5 -3.1 0.0 19 2 13 24 20 13 34 20 --- 15 55 29 24.7 130.9 -2.9 0.0 600 5 13 24 21 13 34 50 G31.28+0.06 15 55 59 24.8 131.0 -2.9 0.0 19 5 13 34 50 13 44 50 --- 16 06 01 25.9 133.5 -2.7 0.0 600 7 13 34 51 13 45 20 G31.28+0.06 16 06 31 26.0 133.6 -2.7 0.0 19 7 13 45 20 13 55 20 --- 16 16 33 27.0 136.1 -2.5 0.0 600 10 13 45 21 13 59 20 J2202+4216 16 20 33 34.8 63.8 -5.7 0.0 67 10 13 59 20 14 09 20 =VR422201 16 30 35 36.2 65.4 -5.5 0.0 600 12 13 59 21 14 19 10 J1331+3030 16 40 26 49.3 255.6 3.1 0.0 145 12 14 19 10 14 29 00 =3C286 16 50 18 47.8 257.9 3.3 0.0 590 14 14 19 11 14 29 30 J1331+3030 16 50 48 47.7 258.1 3.3 0.0 19 14 14 29 30 14 39 30 =3C286 17 00 50 46.3 260.4 3.5 0.0 600 17 14 29 31 14 45 30 G31.28+0.06 17 06 51 31.6 149.6 -1.7 0.0 86 17 14 45 30 14 55 20 --- 17 16 42 32.3 152.4 -1.5 0.0 590 19 14 45 31 14 55 50 G31.28+0.06 17 17 12 32.4 152.5 -1.5 0.0 19 19 14 55 50 15 05 50 --- 17 27 14 33.0 155.4 -1.4 0.0 600 22 14 55 51 15 10 10 J2202+4216 17 31 35 44.8 74.9 -4.5 0.0 87 22 15 10 10 15 20 10 =VR422201 17 41 36 46.3 76.5 -4.4 0.0 600 24 15 10 11 15 24 40 G31.28+0.06 17 46 07 34.1 160.9 -1.0 0.0 93 24 15 24 40 15 34 40 --- 17 56 09 34.5 163.9 -0.9 0.0 600 26 15 24 41 15 35 10 G31.28+0.06 17 56 39 34.6 164.0 -0.9 0.0 19 26 15 35 10 15 45 10 --- 18 06 41 34.9 167.1 -0.7 0.0 600 29 15 35 11 15 45 40 G31.28+0.06 18 07 11 35.0 167.2 -0.7 0.0 19 29 15 45 40 15 55 40 --- 18 17 12 35.3 170.2 -0.5 0.0 600 31 15 45 41 15 56 10 G31.28+0.06 18 17 42 35.3 170.4 -0.5 0.0 19 31 15 56 10 16 04 10 --- 18 25 44 35.4 172.8 -0.4 0.0 480 33 15 56 11 Schedule for WSTRBORK (Code Wb ) 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 --- 16 08 50 J2202+4216 18 30 24 53.5 84.8 -3.5 0.0 107 33 16 08 50 16 18 50 =VR422201 18 40 26 55.0 86.7 -3.4 0.0 600 35 16 08 51 16 23 40 G31.28+0.06 18 45 17 35.7 178.9 -0.1 0.0 113 35 16 23 40 16 33 40 --- 18 55 19 35.7 181.9 0.1 0.0 600 38 16 23 41 16 34 10 G31.28+0.06 18 55 49 35.6 182.1 0.1 0.0 19 38 16 34 10 16 44 10 --- 19 05 50 35.6 185.2 0.3 0.0 600 40 16 34 11 16 44 40 G31.28+0.06 19 06 20 35.5 185.3 0.3 0.0 19 40 16 44 40 16 54 40 --- 19 16 22 35.4 188.4 0.5 0.0 600 43 16 44 41 16 55 10 G31.28+0.06 19 16 52 35.4 188.5 0.5 0.0 19 43 16 55 10 17 05 10 --- 19 26 54 35.1 191.6 0.6 0.0 600 45 16 55 11 17 10 10 J2202+4216 19 31 55 62.8 97.4 -2.5 0.0 127 45 17 10 10 17 20 10 =VR422201 19 41 56 64.3 99.9 -2.4 0.0 600 48 17 10 11 17 25 20 G31.28+0.06 19 47 07 34.3 197.7 1.0 0.0 133 48 17 25 20 17 35 20 --- 19 57 09 33.8 200.6 1.1 0.0 600 50 17 25 21 17 35 50 G31.28+0.06 19 57 39 33.8 200.8 1.1 0.0 19 50 17 35 50 17 45 50 --- 20 07 40 33.2 203.7 1.3 0.0 600 52 17 35 51 17 46 20 G31.28+0.06 20 08 10 33.2 203.9 1.3 0.0 19 52 17 46 20 17 56 20 --- 20 18 12 32.5 206.7 1.5 0.0 600 55 17 46 21 17 56 50 G31.28+0.06 20 18 42 32.5 206.9 1.5 0.0 19 55 17 56 50 18 06 50 --- 20 28 44 31.8 209.7 1.7 0.0 600 57 17 56 51 18 12 00 J2202+4216 20 33 55 71.7 116.3 -1.5 0.0 137 57 18 12 00 18 22 00 =VR422201 20 43 56 73.1 120.5 -1.3 0.0 600 60 18 12 01 18 25 00 J2136+0041 20 46 57 36.8 164.2 -0.8 0.0 28 60 18 25 00 18 34 50 =2134+00 20 56 48 37.2 167.2 -0.7 0.0 590 62 18 25 01 18 37 50 G31.28+0.06 20 59 49 29.2 218.2 2.2 0.0 25 62 18 37 50 18 47 40 --- 21 09 41 28.2 220.8 2.3 0.0 590 64 18 37 51 18 48 10 G31.28+0.06 21 10 11 28.2 220.9 2.4 0.0 19 64 18 48 10 18 57 10 --- 21 19 12 27.3 223.3 2.5 0.0 540 66 18 48 11 18 57 40 G31.28+0.06 21 19 42 27.2 223.4 2.5 0.0 19 66 18 57 40 19 06 40 --- 21 28 44 26.3 225.7 2.7 0.0 540 69 18 57 41 Schedule for WSTRBORK (Code Wb ) 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 --- 19 11 30 J2202+4216 21 33 34 78.3 151.7 -0.5 0.0 117 69 19 11 30 19 20 10 =VR422201 21 42 16 78.9 159.4 -0.4 0.0 520 71 19 11 31 19 25 00 G31.28+0.06 21 47 07 24.2 230.2 3.0 0.0 113 71 19 25 00 19 35 00 --- 21 57 08 23.0 232.6 3.1 0.0 600 73 19 25 01 19 35 30 G31.28+0.06 21 57 38 23.0 232.8 3.1 0.0 19 73 19 35 30 19 45 30 --- 22 07 40 21.7 235.1 3.3 0.0 600 75 19 35 31 19 50 00 J2202+4216 22 12 11 79.3 188.8 0.1 0.0 97 75 19 50 00 20 00 00 =VR422201 22 22 12 79.0 198.5 0.3 0.0 600 78 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: 2 Station: WSTRBORK 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= 6264.00 6264.00 6264.00 6264.00 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: 10 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= 400.85 400.85 400.85 400.85 Bandwd= 2.00 2.00 2.00 2.00 Matching frequency sets: 10 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