From observe@nrao.edu Sat Dec 9 08:59:06 2006 Date: Sat, 09 Dec 2006 15:58:27 +0000 From: VLA Operations To: vlbiobs@nrao.edu, emomjian@naic.edu Subject: 2006-12-09_0859_BM253A.txt ************************************************************************ Filename: 2006-12-09_0859_BM253A Program: BM253A Subarray(s): 1 Observer(s): E. Momjian Operator(s): Sam Gilmore Date: 12/09/2006 Configuration: C User #: 600 Decommissioned: 17 Source File(s): 798B53A VLBI Ref. Ant: 10 Observing Mode: Phased Array VLBI Antenna Pad: CE4 Email Address: vlbiobs@nrao.edu, emomjian@naic.edu API (Atmospheric Phase Interferometer) information can be found at: http://www.vla.nrao.edu/astro/guides/api/ Adobe PDF version of this log is located at: http://www.vla.nrao.edu/operators/logs/ Visibility data is updated each day at IAT/UT midnight and is available from the online archive at: http://e2e.nrao.edu/archive/ ** Weather Information ** Time (IAT) Dew Pt Temp Wind Bar. Press API 09Dec 08:59:10 -10.6 -8.7 E at 1.4 m/s 791.6 2.1 09Dec 10:19:31 -12.5 -10.3 E at 1.0 m/s 791.5 2.9 09Dec 11:02:08 -13.2 -11.3 NW at 0.7 m/s 790.8 4.4 09Dec 12:59:05 -10.1 -9.7 N at 0.2 m/s 791.1 1.7 09Dec 13:39:43 -9.1 -8.5 N at 0.7 m/s 791.1 4.6 09Dec 14:59:59 -5.7 -5.1 N at 2.5 m/s 791.0 6.8 Operator comments for the above weather entries 09Dec 08:59:10 Sky clear. 09Dec 10:19:31 Sky clear. 09Dec 11:02:08 Some fog. 09Dec 12:59:05 Fog. 09Dec 13:39:43 Heavy fog. 09Dec 14:59:59 Heavy fog. ** Visibility Tape Information ** Tape # Time of Final Record: DM0158 ** Monitor Tape Information ** Tape # File # Time of Final Record: N21504 4 Total # of antennas used = 27 ** Operator Comments ** START TIME END TIME FORM # #ANTS DOWNTIME (in minutes) 09Dec 8:59:10 Starting program BM253A. 09Dec 8:59:10 The band(s) used is(are): L 09Dec 9:01:30 On source 3C286 with all available antennas. 09Dec 8:59:10 Antenna(s) : 1 13 14 16 17 18 23 24 26 do not have good baseline positions determined for them because they were moved to their present location recently. Please check for any significant errors and let the Data Analysts (email - analysts@nrao.edu) know what you find. Thank you. 09Dec 8:59:10 As part of the EVLA transition plan, a new correlator controller has replaced vintage equipment and is now routinely in use. The system has been thoroughly tested but we welcome reports of problems that may be related to improper correlator behavior to analysts@nrao.edu. 09Dec 8:59:10 We are currently including all checked-out (operational) EVLA antennas in the VLA by default. For your project, we have included the following EVLA antennas in the array: 13 14 16 18 24 26 09Dec 8:59:10 Please note that using the EVLA antennas is a shared-risk operation and we cannot guarantee that useful data will be produced by these antennas. Users should consult the web page http://www.vla.nrao.edu/astro/guides/evlareturn for known problems and workarounds in using the EVLA antennas with the VLA. We would like your input and feedback on the use of the EVLA antennas in your project; please send all comments and/or questions to gvanmoor@aoc.nrao.edu. 09Dec 08:59:10 09Dec 15:57:00 T100416 1.00 417.8 Antenna 23 (Data: Lost): EVLA Antenna is being used for EVLA testing 09Dec 08:59:10 09Dec 15:57:00 C119553 1.00 417.8 Antenna(s) 22 (Data: Lost): ELECTRICAL Phase loss, 28 volt fault and NCP will not re-set. Cannot communicate with antenna. 09Dec 9:08:00 Inspected the VLB instrumentation. No problems found. 09Dec 10:28:00 Inspected the VLB instrumentation. No problems found. 09Dec 11:40:00 Inspected the VLB instrumentation. No problems found. 09Dec 13:09:00 Inspected the VLB instrumentation. No problems found. 09Dec 14:18:00 Inspected the VLB instrumentation. No problems found. 09Dec 14:53:00 Your new operator(s) is(are): Jim Campbell 09Dec 14:53:00 Ran a backup on the Modcomp partition. 09Dec 14:53:00 Inspected the VLB instrumentation. No problems found. End Time Total Program Time % Downtime Total Downtime (in minutes) (in minutes) 12/09/06 15:57:00 11281.5 7.4% 835.7