COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: H2O masers in IRAS16342-3814 Exp. Code: bc184l Schedule Version: 1.00 Processed by SCHED version: 6.05 June 2006 PI: Mark Claussen Address: National Radio Astronomy Observatory P. O. Box O Socorro, New Mexico, 87801 U.S.A. Phone: 505 835 7284 EMAIL: mclausse@aoc.nrao.edu Fax: 505 835 7027 Phone during observation: 505 835 7284 Observing mode: 1.3 cm VLBA non-standard correlator setup Notes: Schedule for VLBA_HN (Code Hn ) Page 2 H2O masers in IRAS16342-3814 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 20 Feb 2008 Day 51 --- Next scan frequencies: 22220.60 22227.12 22233.58 22240.03 Next BBC frequencies: 720.60 727.12 733.58 740.03 Next scan bandwidths: 8.00 8.00 8.00 8.00 10 43 28 J1626-2951 15 54 32 16.8 172.7 -0.5 -6.1 0 1 1 0 Stopped 10 45 08 =1622-297 15 56 12 16.9 173.1 -0.5 -5.8 100 S 1 2 10 45 12 J1626-2951 15 56 16 16.9 173.1 -0.5 -5.8 0 1 1 2 10 45 12 10 50 11 =1622-297 16 01 16 17.0 174.3 -0.4 -4.8 299 F 1 6 10 45 35 10 50 35 IRAS16342 16 01 40 8.3 172.8 -0.6 -6.7 0 1 1 6 10 50 35 11 05 32 --- 16 16 40 8.6 175.7 -0.4 -4.0 898 F 1 21 10 50 58 11 05 37 IRAS16342 16 16 44 8.6 175.7 -0.4 -4.0 0 1 1 21 11 05 32 11 20 34 --- 16 31 44 8.7 178.7 -0.1 -1.2 898 F 1 35 11 05 32 11 20 39 IRAS16342 16 31 49 8.7 178.7 -0.1 -1.2 0 1 1 35 11 20 34 11 35 36 --- 16 46 49 8.7 181.7 0.1 1.6 898 F 1 50 11 20 34 11 35 41 IRAS16342 16 46 53 8.7 181.7 0.1 1.6 0 1 1 50 11 35 36 11 50 38 --- 17 01 53 8.5 184.7 0.4 4.4 898 F 1 65 11 35 36 11 51 37 J1733-1304 17 02 52 33.5 171.0 -0.5 -6.7 3 1 1 65 11 51 37 11 56 37 =1730-130 17 07 52 33.7 172.5 -0.4 -5.6 299 F 1 69 11 52 00 11 57 37 IRAS16342 17 08 52 8.4 186.1 0.5 5.7 3 1 1 69 11 57 37 12 12 34 --- 17 23 52 8.1 189.0 0.8 8.4 898 F 1 84 11 58 00 12 12 38 IRAS16342 17 23 57 8.1 189.0 0.8 8.4 0 1 1 84 12 12 34 12 27 36 --- 17 38 57 7.6 192.0 1.0 11.2 898 F 1 98 12 12 34 12 27 40 IRAS16342 17 39 01 7.5 192.0 1.0 11.2 0 1 1 98 12 27 36 12 42 38 --- 17 54 01 6.9 194.9 1.3 13.9 898 F 1 113 12 27 36 12 42 42 IRAS16342 17 54 06 6.9 194.9 1.3 13.9 0 1 1 113 12 42 38 12 57 40 --- 18 09 06 6.1 197.7 1.5 16.5 898 F 1 127 12 42 38 12 57 44 IRAS16342 18 09 10 6.1 197.7 1.5 16.5 0 1 1 127 12 57 40 13 12 42 --- 18 24 10 5.2 200.6 1.8 19.1 898 F 1 142 12 57 40 13 12 46 IRAS16342 18 24 14 5.2 200.6 1.8 19.2 0 1 1 142 13 12 42 13 27 44 --- 18 39 14 4.2 203.3 2.0 H 21.7 0 F 1 157 13 12 42 Schedule for VLBA_HN (Code Hn ) Page 3 H2O masers in IRAS16342-3814 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Wed 20 Feb 2008 Day 51 --- 13 27 48 IRAS16342 18 39 19 4.2 203.4 2.0 H 21.7 0 1 1 157 13 27 44 13 42 46 --- 18 54 19 3.0 206.1 2.3 H 24.2 0 F 1 171 13 27 44 13 42 50 IRAS16342 18 54 23 3.0 206.1 2.3 H 24.2 0 1 1 171 13 42 46 13 57 48 --- 19 09 23 1.8 208.7 2.5 D 26.7 0 F 1 186 13 42 46 15 29 01 J1733-1304 20 40 52 19.5 228.9 3.1 34.5 5433 1 1 186 15 29 01 15 34 00 =1730-130 20 45 52 18.8 230.0 3.2 35.1 299 F 1 190 15 29 24 16 36 07 J1733-1304 21 48 09 9.3 242.2 4.2 41.7 3702 1 1 190 16 36 07 16 41 07 =1730-130 21 53 09 8.5 243.1 4.3 42.1 299 F 1 195 16 36 30 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bc184.set Matches group v1cm_b3 in /users/cwalker/sched/catalogs/freq.dat Setup group: 2 Station: VLBA_HN Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Speedup factor: 2.00 Disk used to record data. 1st LO= 21500.00 21500.00 21500.00 21500.00 Net SB= U U U U Pol. = LCP LCP LCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = D D D D VLBA FE= omit 1cm omit 1cm VLBA Synth= 9.1 15.4 12.4 The following frequency sets based on this setup were used. Frequency Set: 2 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 22220.60 22227.12 22233.58 22240.03 BBC fr= 720.60 727.12 733.58 740.03 Bandwd= 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_off SOURCE LIST -- H2O masers in IRAS16342-3814 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) * IRAS16342 16 34 16.933259 * 16 37 39.958000 16 38 13.415996 0.00 -38 14 17.83511 *-38 20 17.16500 -38 21 17.14821 0.00 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 176.00 88.00 1.00 -86.00 5.485 scan hours, 134.381 baseline hours above horizon. * J1626-2951 16 22 57.242941 * 16 26 06.020847 16 26 37.224886 0.00 1622-297 -29 44 41.40057 *-29 51 26.97131 -29 52 37.48841 0.00 J1626-29 From catalog imbedded in main SCHED input file. USNO - Ref Frame 1998-6, Eubanks June 1998 Doppler based on other sources. 0.083 scan hours, 2.327 baseline hours above horizon. * J1733-1304 17 30 13.535185 * 17 33 02.705782 17 33 30.368233 0.00 1730-130 -13 02 45.83980 *-13 04 49.54828 -13 05 20.03083 0.00 J1733-13 From catalog imbedded in main SCHED input file. NRAO530 USNO - Ref Frame 1998-6, Eubanks June 1998 Doppler based on other sources. 0.249 scan hours, 8.311 baseline hours above horizon. 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) IRAS16342 78.3 J1626-2951 81.7 J1733-1304 68.2 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