From observe@nrao.edu Sun Feb 4 18:11:11 2007 Date: Mon, 05 Feb 2007 01:10:59 +0000 From: VLA Operations To: vlbiobs@nrao.edu, gbtaylor@unm.edu Subject: 2007-02-04_1444_BG162.txt ************************************************************************ Filename: 2007-02-04_1444_BG162 Program: BG162 Subarray(s): 1 Observer(s): Greg Taylor Operator(s): Steve Steele Date: 02/04/2007 Configuration: DnC User #: 600 Decommissioned: 21 Source File(s): 855G162 VLBI Ref. Ant: 10 Observing Mode: Phased Array VLBI Antenna Pad: DE8 Email Address: vlbiobs@nrao.edu,gbtaylor@unm.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 available from the online archive at: http://archive.nrao.edu ** Weather Information ** Time (IAT) Dew Pt Temp Wind Bar. Press API 04Feb 14:44:00 -13.2 -8.3 NW at 2.0 m/s 795.3 1.8 04Feb 14:59:16 -12.4 -8.0 NE at 1.6 m/s 795.5 7.4 04Feb 16:59:10 -12.2 6.2 W at 1.1 m/s 796.0 2.9 04Feb 18:59:32 -14.7 8.9 E at 1.5 m/s 795.6 3.7 04Feb 19:59:38 -15.2 8.8 W at 1.5 m/s 794.8 1.2 04Feb 20:59:41 -12.9 9.9 W at 2.7 m/s 793.7 2.2 04Feb 21:59:45 -13.5 9.7 W at 3.5 m/s 793.4 2.7 04Feb 22:59:51 -12.9 10.2 W at 3.3 m/s 793.3 4.1 05Feb 0:29:58 -9.2 7.7 SW at 1.8 m/s 793.7 0.9 Operator comments for the above weather entries 04Feb 14:44:00 Sky cover 60%. Stratiform clouds. 04Feb 14:59:16 Sky cover 70%. Stratiform clouds. 04Feb 16:59:10 Sky cover 60%. Stratiform clouds. 04Feb 18:59:32 Sky cover 40%. Stratiform clouds. 04Feb 19:59:38 Sky cover 30%. Stratiform clouds. 04Feb 20:59:41 Sky cover 20%. Stratiform clouds. 04Feb 21:59:45 Sky cover 10%. Stratiform clouds. 04Feb 22:59:51 Sky clear. 05Feb 0:29:58 Sky clear. ** Visibility Tape Information ** Tape # Time of Final Record: DM170 ** Monitor Tape Information ** Tape # File # Time of Final Record: N21514 2 05Feb 00:00:00 N21514 3 Total # of antennas used = 27 ** Operator Comments ** START TIME END TIME FORM # #ANTS DOWNTIME (in minutes) 04Feb 14:44:00 Starting program BG162. 04Feb 14:44:00 The band(s) used is(are): X 04Feb 14:46:10 On source 3C286 with all available antennas. 04Feb 14:44:00 Antenna(s) : 8 11 12 19 20 22 25 28 have recently updated baseline parameters to correct for errors resulting from their recent relocation. Antenna(s) : 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. 04Feb 14:44:00 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. 04Feb 14:44:00 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 23 24 26 04Feb 14:44:00 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. 04Feb 14:44:00 05Feb 01:10:00 T100418 1.00 626.0 Antenna 17 (Data: Lost): EVLA Antenna is being used for EVLA testing 04Feb 15:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 15:48:10 Ran a backup on the Modcomp partition. 04Feb 15:50:00 04Feb 15:51:00 Other 1.00 1.0 Antenna(s) 9 (Data: Corrupted): OTHER Did not phase up; reset. 04Feb 16:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 17:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 17:01:00 04Feb 17:03:00 Other 1.00 2.0 Antenna(s) 25 (Data: Corrupted): OTHER Did not phase up; reset. 04Feb 18:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 19:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 20:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 21:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 22:00:00 Inspected the VLB instrumentation. No problems found. 04Feb 22:54:00 Your new operator(s) is(are): David Midgett 04Feb 22:56:00 05Feb 01:10:00 C119826 7.00 938.0 Antenna(s) 13, 14, 16, 18, 23, 24, 26 (Data: Lost): EVLA Antennas not phasing up with reference antenna. Removed from observation. 04Feb 23:43:00 Inspected the VLB instrumentation. No problems found. 05Feb 0:50:00 Inspected the VLB instrumentation. No problems found. End Time Total Program Time % Downtime Total Downtime (in minutes) (in minutes) 02/05/07 01:10:00 16902.0 9.3% 1567.0