From observe@nrao.edu Tue Feb 13 09:20:56 2007 Date: Tue, 13 Feb 2007 16:20:35 +0000 From: VLA Operations To: vlbiobs@nrao.edu, emomjian@naic.edu Subject: 2007-02-13_0640_BM253.txt ************************************************************************ Filename: 2007-02-13_0640_BM253 Program: BM253 Subarray(s): 1 Observer(s): E. Momjian Operator(s): Jim Campbell Date: 02/13/2007 Configuration: DnC User #: 600 Decommissioned: 21 Source File(s): 864M253 VLBI Ref. Ant: 10 Observing Mode: Phased Array VLBI Antenna Pad: DE8 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 available from the online archive at: http://archive.nrao.edu ** Weather Information ** Time (IAT) Dew Pt Temp Wind Bar. Press API 13Feb 06:40:20 -6.0 -1.7 NW at 2.2 m/s 785.9 2.6 13Feb 7:59:53 -6.8 -4.8 N at 0.8 m/s 785.6 3.7 13Feb 8:59:51 -7.8 -5.6 SE at 1.9 m/s 785.5 15.9 13Feb 9:59:57 -7.4 -5.2 S at 2.6 m/s 784.8 6.5 13Feb 10:59:04 -6.0 -2.9 S at 1.7 m/s 784.5 1.8 13Feb 11:59:59 -8.2 -6.6 W at 1.3 m/s 784.7 2.4 13Feb 13:09:46 -9.2 -7.4 NW at 0.1 m/s 785.1 2.4 13Feb 13:59:11 -8.3 -7.6 NW at 1.2 m/s 785.1 2.4 13Feb 14:59:09 -7.5 -6.0 E at 0.5 m/s 785.0 8.6 13Feb 15:59:07 -3.8 -2.1 E at 1.5 m/s 784.7 13.0 Operator comments for the above weather entries 13Feb 06:40:20 Sky clear. 13Feb 7:59:53 Sky clear. 13Feb 8:59:51 Sky clear. 13Feb 9:59:57 Sky clear. 13Feb 10:59:04 Sky clear. 13Feb 11:59:59 Sky clear. 13Feb 13:09:46 Sky cover 10%. Mixed clouds. 13Feb 13:59:11 Sky cover 30%. Mixed clouds. 13Feb 14:59:09 Sky cover 30%. Mixed clouds. 13Feb 15:59:07 Sky cover 40%. Mixed clouds. ** Visibility Tape Information ** Tape # Time of Final Record: DM0171 ** Monitor Tape Information ** Tape # File # Time of Final Record: N21515 4 Total # of antennas used = 27 ** Operator Comments ** START TIME END TIME FORM # #ANTS DOWNTIME (in minutes) 13Feb 6:40:20 Starting program BM253. 13Feb 6:40:20 The band(s) used is(are): L 13Feb 6:42:40 On source 3C286 with all available antennas. 13Feb 6:40:20 Antenna(s) : 7 12 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. 13Feb 6:40:20 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. 13Feb 6:40:20 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 17 18 23 24 26 13Feb 6:40:20 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. 13Feb 06:40:20 13Feb 16:07:00 C119859 1.00 566.7 Antenna(s) 14 (Data: Lost): EVLA Not fringing at any band. 13Feb 06:40:20 13Feb 16:07:00 Other 1.00 566.7 Antenna(s) 26 (Data: Lost): EVLA IF A not functioning at L-band. 13Feb 06:40:20 13Feb 06:57:30 Software 6.00 103.0 EVLA antennas missed first source due to missing EVLA EVLA script. Script was re-accomplished and loaded. 13Feb 6:42:40 Upper side band for BBC's 7 and 8 out of range for VLA equipment. 13Feb 08:45:00 13Feb 16:07:00 Other 1.00 442.0 Antenna(s) 18 (Data: Lost): EVLA Antenna will not phase up with the rest of the array on IF A. Parked. 13Feb 09:58:00 13Feb 10:54:00 C119874 0.00 0.0 Antenna(s) 11 (Data: Corrupted): LO/IF Occasional 600MHz round trip phase jumps. Check your data. 13Feb 14:02:00 13Feb 16:07:00 T100444 1.00 125.0 Antenna(s) 13 (Data: Lost): ANTENNA PADS Antenna being moved to D configuration. 13Feb 14:30:00 13Feb 16:07:00 Other 1.00 97.0 Antenna(s) 1 (Data: Lost): CRYOGENICS Technicians charging compressors. 13Feb 14:45:00 Your new operator(s) is(are): Matt Gardiner & Larry Brothers End Time Total Program Time % Downtime Total Downtime (in minutes) (in minutes) 02/13/07 16:07:00 15300.0 12.4% 1900.3