From observe@nrao.edu Fri Apr 27 21:21:28 2007 Date: Sat, 28 Apr 2007 03:21:16 +0000 From: VLA Operations To: amiodusz@nrao.edu, vlbiobs@nrao.edu Subject: 2007-04-27_1520_BL150E.txt ************************************************************************ Filename: 2007-04-27_1520_BL150E Program: BL150E Subarray(s): 1 Observer(s): Mioduszewski Operator(s): Jim Campbell Date: 04/27/2007 Configuration: D User #: 600 Decommissioned: 11 Source File(s): 937L150 VLBI Ref. Ant: 10 Observing Mode: Phased Array VLBI Antenna Pad: DE8 Email Address: amiodusz@nrao.edu , vlbiobs@nrao.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 27Apr 15:20:20 -2.2 12.8 W at 1.3 m/s 790.3 1.6 27Apr 15:59:59 -3.1 16.9 NE at 0.8 m/s 790.4 3.1 27Apr 16:59:56 -5.1 18.6 E at 4.7 m/s 790.7 7.2 27Apr 17:29:49 -5.1 18.2 NE at 2.6 m/s 790.5 5.2 27Apr 19:59:51 -3.5 20.7 E at 2.0 m/s 789.8 6.3 27Apr 20:59:49 -2.9 22.0 SE at 1.7 m/s 789.5 13.2 27Apr 22:39:25 -2.8 21.5 E at 4.4 m/s 789.2 11.8 27Apr 23:49:09 -2.9 21.7 E at 3.1 m/s 789.2 8.0 28Apr 0:39:35 -4.2 20.5 NE at 3.7 m/s 789.3 5.8 28Apr 0:59:56 -4.3 20.4 E at 4.0 m/s 789.5 9.1 28Apr 1:59:47 -7.5 16.1 SE at 2.1 m/s 790.0 3.2 28Apr 2:49:50 -8.6 14.1 SE at 1.8 m/s 790.7 2.1 Operator comments for the above weather entries 27Apr 15:20:20 Sky clear. 27Apr 15:59:59 Sky clear. 27Apr 16:59:56 Sky clear. 27Apr 17:29:49 Sky clear. 27Apr 19:59:51 Sky clear. 27Apr 20:59:49 Sky cover 10%. Cumuliform clouds. 27Apr 22:39:25 Sky cover 20%. Cumuliform clouds. 27Apr 23:49:09 Sky cover 10%. Cumuliform clouds. 28Apr 0:39:35 Sky clear. 28Apr 0:59:56 Sky clear. 28Apr 1:59:47 Sky clear. 28Apr 2:49:50 Sky clear. ** Visibility Tape Information ** Tape # Time of Final Record: DM0186 ** Monitor Tape Information ** Tape # File # Time of Final Record: N21525 7 28Apr 00:00:00 N21526 1 Total # of antennas used = 27 ** Operator Comments ** START TIME END TIME FORM # #ANTS DOWNTIME (in minutes) 27Apr 15:20:20 Starting program BL150E. 27Apr 15:20:20 The band(s) used is(are): X 27Apr 15:23:50 On source J0429+2724 with all available antennas. 27Apr 15:20:20 Antenna(s) : 21 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. 27Apr 15:20:20 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. 27Apr 15:20:20 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 27Apr 15:20:20 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. 27Apr 15:20:20 27Apr 21:21:00 T100427 1.00 360.7 Antenna 21 (Data: Lost): EVLA Antenna is being used for EVLA testing 27Apr 15:20:20 28Apr 03:18:40 T100449 1.00 718.3 Antenna 19 (Data: Lost): EVLA Antenna is being used for EVLA testing SHADOWING IS OCCURRING! Some antennas are blocking the view of your radio source from other antennas. You may have to edit your data. Observing data: Corrupted. 27Apr 16:24:00 Inspected the VLB instrumentation. No problems found. 27Apr 17:02:00 Inspected the VLB instrumentation. No problems found. 27Apr 18:00:00 Inspected the VLB instrumentation. No problems found. 27Apr 19:05:00 Inspected the VLB instrumentation. No problems found. 27Apr 20:07:00 Inspected the VLB instrumentation. No problems found. 27Apr 21:04:00 Inspected the VLB instrumentation. No problems found. 27Apr 21:21:00 27Apr 23:08:40 Other 1.00 107.7 Antenna(s) 23 (Data: Lost): EVLA Steve Durand is performing test. 27Apr 21:00:00 27Apr 21:49:59 Other 8.00 399.9 Antenna(s) 13 14 16 17 18 23 24 26 (Data: Lost): SITE POWER There appears to be a power problem with the deformatter racks that has rendered all EVLA antennas useless. Techs are investigating. 27Apr 21:49:30 Your new operator is Steve Steele. 27Apr 21:50:00 27Apr 22:14:59 C120285 8.00 199.9 Antenna(s) All EVLA (Data: Lost): VLA CORRELTR Sometime after lunch the Power Supply to the EVLA failed causing the deformaters, a loss of power. Techs reparing the problem. 27Apr 22:15:00 27Apr 22:42:50 C120285 6.00 167.0 Antenna(s) All EVLA (Data: Lost): VLA CORRELTR Sometime after lunch the Power Supply to the EVLA failed causing the deformaters, a loss of power. Techs reparing the problem. 27Apr 23:05:00 28Apr 03:18:40 C120287 1.00 Antenna(s) 10 (Data: Corrupted): CRYOGENICS Compressor is down; switching to Antenna # 9 for a referance, IAT 23:41:40. 28Apr 00:44:00 28Apr 03:18:40 C120288 1.00 Antenna(s) 4 (Data: Corrupted): FRONT END All data is flagged, and fails to appear on the F/D10 screen. 28Apr 01:52:00 28Apr 03:18:40 C120289 1.00 86.7 Antenna(s) 22 (Data: Corrupted): SERVO Field Fault-Elevation fault. End Time Total Program Time % Downtime Total Downtime (in minutes) (in minutes) 04/28/07 03:18:40 19395.0 10.5% 2040.1