COVER INFORMATION Station: ONSALA85 (Code On ) Experiment: 6.7GHz masers toward G23.01-0.41: magnetic field vs. velocity field Exp. Code: ES067 Schedule Version: 2.00 Processed by SCHED version: 9.40 Development version after Mar. 23, 2010. PI: A. Sanna Address: Max-Planck-Institut fuer Radioastronomie Auf dem Huegel 69 53121, Bonn Germany Phone: +49 (0)228 525304 EMAIL: asanna@mpifr-bonn.mpg.de Fax: Phone during observation: +49 (0)228 525304 Observing mode: Polarization observations of 1 source at 6.7 GHz (32 Mb/s) Notes: phase-cal OFF Schedule for ONSALA85 (Code On ) Page 2 6.7GHz masers toward G23.01-0.41: magnetic field vs. velocity field UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sun 29 May 2011 Day 149 --- Next scan frequencies: 6666.48 6666.48 6666.48 6666.48 Next BBC frequencies: 166.48 166.48 166.48 166.48 Next scan bandwidths: 2.00 2.00 2.00 2.00 22 00 00 J2202+4216 15 15 59 29.1 55.9 -6.8 0.0 0 1 1 0 22 00 00 22 08 00 =BLLAC 15 24 00 30.0 57.2 -6.7 0.0 480 F 1 2 22 00 04 22 16 00 J1331+3030 15 32 02 56.0 230.6 2.0 0.0 28 1 1 2 22 16 00 22 26 00 =3C286 15 42 03 54.9 233.9 2.2 0.0 600 F 1 4 22 16 04 22 31 00 G23.01 15 47 04 15.3 136.7 -2.8 0.0 36 1 1 4 22 31 00 22 42 30 --- 15 58 36 16.3 139.4 -2.6 0.0 690 F 1 7 22 31 04 22 43 00 G23.01 15 59 06 16.3 139.6 -2.6 0.0 22 1 1 7 22 43 00 22 54 30 --- 16 10 38 17.3 142.4 -2.4 0.0 690 F 1 10 22 43 04 22 55 00 G23.01 16 11 08 17.4 142.5 -2.4 0.0 22 1 1 10 22 55 00 23 06 30 --- 16 22 40 18.3 145.3 -2.2 0.0 690 F 1 13 22 55 04 23 07 00 G23.01 16 23 10 18.3 145.4 -2.2 0.0 22 1 1 13 23 07 00 23 18 30 --- 16 34 42 19.2 148.3 -2.0 0.0 690 F 1 15 23 07 04 23 23 30 J2202+4216 16 39 43 39.1 70.1 -5.4 0.0 81 1 1 15 23 23 30 23 31 30 =BLLAC 16 47 44 40.1 71.5 -5.3 0.0 480 F 1 17 23 23 34 23 36 30 G23.01 16 52 45 20.4 152.9 -1.7 0.0 81 1 1 17 23 36 30 23 48 00 --- 17 04 17 21.0 155.8 -1.5 0.0 690 F 1 20 23 36 34 23 48 30 G23.01 17 04 47 21.1 156.0 -1.5 0.0 22 1 1 20 23 48 30 23 59 59 --- 17 16 19 21.7 158.9 -1.3 0.0 689 F 1 23 23 48 34 --- Mon 30 May 2011 Day 150 --- 00 00 30 G23.01 17 16 49 21.7 159.1 -1.3 0.0 22 1 1 23 00 00 30 00 12 00 --- 17 28 21 22.2 162.1 -1.1 0.0 690 F 1 26 00 00 34 00 12 30 G23.01 17 28 51 22.2 162.2 -1.1 0.0 22 1 1 26 00 12 30 00 24 00 --- 17 40 23 22.7 165.3 -0.9 0.0 690 F 1 29 00 12 34 00 29 00 J2202+4216 17 45 24 47.7 81.9 -4.3 0.0 81 1 1 29 00 29 00 00 37 00 =BLLAC 17 53 25 48.7 83.5 -4.2 0.0 480 F 1 30 00 29 04 Schedule for ONSALA85 (Code On ) Page 3 6.7GHz masers toward G23.01-0.41: magnetic field vs. velocity field UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Mon 30 May 2011 Day 150 --- 00 42 00 G23.01 17 58 26 23.2 170.1 -0.6 0.0 81 1 1 30 00 42 00 00 53 30 --- 18 09 58 23.4 173.2 -0.4 0.0 690 F 1 33 00 42 04 00 54 00 G23.01 18 10 28 23.4 173.3 -0.4 0.0 22 1 1 33 00 54 00 01 05 30 --- 18 22 00 23.5 176.4 -0.2 0.0 690 F 1 36 00 54 04 01 06 00 G23.01 18 22 30 23.6 176.5 -0.2 0.0 22 1 1 36 01 06 00 01 17 30 --- 18 34 01 23.6 179.6 0.0 0.0 690 F 1 39 01 06 04 01 18 00 G23.01 18 34 32 23.6 179.8 0.0 0.0 22 1 1 39 01 18 00 01 29 30 --- 18 46 03 23.6 182.9 0.2 0.0 690 F 1 42 01 18 04 01 34 30 J2202+4216 18 51 04 56.5 95.6 -3.2 0.0 81 1 1 42 01 34 30 01 42 30 =BLLAC 18 59 06 57.5 97.4 -3.1 0.0 480 F 1 44 01 34 34 01 47 30 G23.01 19 04 06 23.3 187.7 0.5 0.0 81 1 1 44 01 47 30 01 59 00 --- 19 15 38 23.1 190.8 0.7 0.0 690 F 1 46 01 47 34 01 59 30 G23.01 19 16 08 23.1 191.0 0.7 0.0 22 1 1 46 01 59 30 02 11 00 --- 19 27 40 22.7 194.0 0.9 0.0 690 F 1 49 01 59 34 02 11 30 G23.01 19 28 10 22.7 194.2 0.9 0.0 22 1 1 49 02 11 30 02 23 00 --- 19 39 42 22.3 197.2 1.1 0.0 690 F 1 52 02 11 34 02 23 30 G23.01 19 40 12 22.3 197.3 1.1 0.0 22 1 1 52 02 23 30 02 35 00 --- 19 51 44 21.8 200.4 1.3 0.0 690 F 1 55 02 23 34 02 40 00 J2202+4216 19 56 45 65.0 113.4 -2.1 0.0 81 1 1 55 02 40 00 02 48 00 =BLLAC 20 04 46 66.0 116.0 -2.0 0.0 480 F 1 57 02 40 04 02 53 00 G23.01 20 09 47 20.8 205.0 1.6 0.0 81 1 1 57 02 53 00 03 04 30 --- 20 21 19 20.2 208.0 1.8 0.0 690 F 1 59 02 53 04 03 05 00 G23.01 20 21 49 20.1 208.1 1.8 0.0 22 1 1 59 03 05 00 03 16 30 --- 20 33 21 19.4 211.0 2.0 0.0 690 F 1 62 03 05 04 03 17 00 G23.01 20 33 51 19.3 211.2 2.0 0.0 22 1 1 62 03 17 00 03 28 30 --- 20 45 23 18.5 214.0 2.2 0.0 690 F 1 65 03 17 04 03 29 00 G23.01 20 45 53 18.4 214.2 2.2 0.0 22 1 1 65 03 29 00 03 40 30 --- 20 57 25 17.5 217.0 2.4 0.0 690 F 1 68 03 29 04 03 45 30 J2202+4216 21 02 26 72.1 140.9 -1.0 0.0 81 1 1 68 03 45 30 03 53 30 =BLLAC 21 10 27 72.8 145.3 -0.9 0.0 480 F 1 70 03 45 34 Schedule for ONSALA85 (Code On ) Page 4 6.7GHz masers toward G23.01-0.41: magnetic field vs. velocity field UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. For disks, the footages are really the GBytes TPStart: Tape motion start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Mon 30 May 2011 Day 150 --- 03 58 30 G23.01 21 15 28 16.0 221.4 2.7 0.0 81 1 1 70 03 58 30 04 10 00 --- 21 27 00 15.0 224.1 2.9 0.0 690 F 1 72 03 58 34 04 10 30 G23.01 21 27 30 14.9 224.2 2.9 0.0 22 1 1 72 04 10 30 04 22 00 --- 21 39 02 13.8 226.9 3.1 0.0 690 F 1 75 04 10 34 04 22 30 G23.01 21 39 32 13.7 227.1 3.1 0.0 22 1 1 75 04 22 30 04 34 00 --- 21 51 04 12.6 229.7 3.3 0.0 690 F 1 78 04 22 34 04 34 30 G23.01 21 51 34 12.5 229.8 3.3 0.0 22 1 1 78 04 34 30 04 46 00 --- 22 03 06 11.3 232.5 3.5 0.0 690 F 1 81 04 34 34 04 51 00 J2202+4216 22 08 07 74.9 183.5 0.1 0.0 81 1 1 81 04 51 00 04 59 00 =BLLAC 22 16 08 74.8 189.1 0.2 0.0 480 F 1 83 04 51 04 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: sess211.M32 Matching groups in : on5cm Values confirmed by E-mail J.Conway (CR 18Jan02) Setup group: 1 Station: ONSALA85 Total bit rate: 32 Format: MKIV1:1 Bits per sample: 2 Sample rate: 4.000 Number of channels: 4 Speedup factor: 2.00 Disk used to record data. 1st LO= 6500.00 6500.00 6500.00 6500.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 2 1 4 3 BBC SB= U U U U IF = 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 2 Based on FREQ, BW, and/or DOPPLER in schedule. LO sum= 6666.48 6666.48 6666.48 6666.48 BBC fr= 166.48 166.48 166.48 166.48 Bandwd= 2.000 2.000 2.000 2.000 Track assignments are: track1= 2, 6, 10, 14 barrel=roll_off SOURCES USED IN RECORDING SCANS -- 6.7GHz masers toward G23.01-0.41: magnetic field vs. velocity field Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * G23.01 18 31 55.995307 * 18 34 40.290000 18 35 19.979215 0.00 -09 03 03.43237 *-09 00 38.30000 -09 00 02.85528 0.00 From catalog imbedded in main SCHED input file. maser target position Doppler based on LSR frame and radio definition. Velocities: 77.00 77.00 77.00 77.00 4.600 scan and 96.594 baseline hours in setup: sess211.M32 * J1331+3030 13 28 49.657776 * 13 31 08.288068 13 31 41.792851 0.21 3C286 30 45 58.64077 * 30 30 32.95941 30 27 01.53314 0.19 1328+307 /home/Alberto/SCHED09/catalogs/sources.vlba J1331+30 GSFC Nov. 2009 Solution 2009a 243 Observations Doppler based on other sources. 0.167 scan and 3.500 baseline hours in setup: sess211.M32 * J2202+4216 22 00 39.362506 * 22 02 43.291373 22 03 12.713403 0.01 BLLAC 42 02 08.59082 * 42 16 39.97996 42 19 50.02785 0.01 2200+420 /home/Alberto/SCHED09/catalogs/sources.vlba J2202+42 GSFC Nov. 2009 Solution 2009a 50280 Observations VR422201 Doppler based on other sources. 0.933 scan and 17.333 baseline hours in setup: sess211.M32 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) G23.01 146.5 J1331+3030 113.1 J2202+4216 79.6 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