From observe@nrao.edu Sun Apr 30 09:37:01 2006 Date: Sun, 30 Apr 2006 15:36:49 +0000 From: VLA Operations To: vlbiobs@nrao.edu, anupreeta@mpifr-bonn.mpg.de Subject: 2006-04-30_0730_BM241.txt ************************************************************************ Filename: 2006-04-30_0730_BM241 Program: BM241 Subarray(s): 1 Observer(s): More Operator(s): Jim Campbell Date: 04/30/2006 Configuration: A User #: 600 Decommissioned: 26 Source File(s): 574M241 VLBI Ref. Ant: 10 Observing Mode: Phased Array VLBI Antenna Pad: E8 Email Address: 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 is available from the online archive at: http://e2e.nrao.edu/archive/ ** Weather Information ** Time (IAT) Dew Pt Temp Wind Bar. Press API 30Apr 07:30:48 -9.6 5.8 W at 3.3 m/s 789.0 1.6 30Apr 12:40:01 -8.6 0.1 W at 1.5 m/s 789.2 4.3 30Apr 12:59:22 -8.2 0.6 NW at 2.5 m/s 789.2 3.0 30Apr 13:59:20 -11.4 6.3 W at 2.8 m/s 789.5 2.8 Operator comments for the above weather entries 30Apr 07:30:48 Sky clear. 30Apr 12:40:01 Sky clear. 30Apr 12:59:22 Sky clear. 30Apr 13:59:20 Sky clear. ** Visibility Tape Information ** Tape # Time of Final Record: DM0096 ** Monitor Tape Information ** Tape # File # Time of Final Record: N21471 6 Total # of antennas used = 27 ** Operator Comments ** START TIME END TIME FORM # #ANTS DOWNTIME (in minutes) 30Apr 7:30:48 Starting program BM241. 30Apr 7:30:48 The band(s) used is(are): X 30Apr 7:31:00 On source 3C286 with all available antennas. 30Apr 7:30:48 Antenna(s) : 13 18 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. 30Apr 07:30:48 30Apr 15:34:20 C112151 1.00 483.5 Antenna 13 (Data: Lost): EVLA Antenna is being used for EVLA testing. 30Apr 07:30:48 30Apr 15:34:20 T100268 1.00 483.5 Antenna 14 (Data: Lost): EVLA Antenna is being used for EVLA testing. 30Apr 07:30:48 30Apr 15:34:20 T100312 1.00 483.5 Antenna 16 (Data: Lost): EVLA Antenna is being used for EVLA testing. 30Apr 07:30:48 30Apr 15:34:20 T100329 1.00 483.5 Antenna 18 (Data: Lost): EVLA Antenna is being used for EVLA testing. 30Apr 07:30:48 30Apr 15:34:20 T100376 1.00 483.5 Antenna 24 (Data: Lost): EVLA Antenna is being used for EVLA testing. 30Apr 07:30:48 30Apr 15:34:20 C118140 1.00 483.5 Antenna(s) 6 (Data: Lost): SERVO Antenna 6 off source due to az motor faults, tried numerous resets to no avail. Contacted M. Claussen for guidance. he said to not assign another antenna to analog sums. 30Apr 7:30:48 File started early due to previous file ending early. 30Apr 8:16:00 Initial scans had wrong antennas in analog sums. Corrected antennas file and now only antennas 9 and 10 are being used for analog sums, but all antennas are phasing. 30Apr 07:30:48 30Apr 15:34:20 Other 0.50 241.8 Antenna(s) 20 (Data: Corrupted): LO/IF L6 on AC side will not lock. 30Apr 07:30:48 30Apr 15:34:20 118141 0.50 241.8 Antenna(s) 4 (Data: Corrupted): FRONT END SYS/CAL saturated and total power near zero on IF's C and D. 30Apr 9:01:00 Inspected the VLB instrumentation. No problems found. 30Apr 07:31:00 30Apr 10:00:00 C118139 0.20 29.8 Antenna(s) 10 (Data: Corrupted): SERVO Recurring azimuth motor faults. reset ACU and repointed. 30Apr 10:35:00 Inspected the VLB instrumentation. No problems found. 30Apr 11:35:00 Inspected the VLB instrumentation. No problems found. 30Apr 12:35:00 Inspected the VLB instrumentation. No problems found. 30Apr 13:20:00 Inspected the VLB instrumentation. No problems found. 30Apr 14:01:00 Your new operator(s) is(are): David Midgett 30Apr 14:07:00 Ran a backup on the Modcomp partition. 30Apr 14:40:00 Inspected the VLB instrumentation. No problems found. End Time Total Program Time % Downtime Total Downtime (in minutes) (in minutes) 04/30/06 15:34:20 13055.4 26.2% 3414.5