From observe@nrao.edu Thu Dec 28 15:44:02 2006 Date: Thu, 28 Dec 2006 22:43:47 +0000 From: VLA Operations To: jconway@oso.chalmers.se, vlbiobs@nrao.edu Subject: 2006-12-28_0957_GC028B.txt ************************************************************************ Filename: 2006-12-28_0957_GC028B Program: GC028B Subarray(s): 1 Observer(s): John Conway Operator(s): Tom Briscoe Date: 12/28/2006 Configuration: C User #: 600 Decommissioned: 21 Source File(s): 817C289B VLBI Ref. Ant: 10 Observing Mode: Phased Array VLBI Antenna Pad: CE4 Email Address: jconway@oso.chalmers.se,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 28Dec 09:57:23 -12.0 3.2 S at 4.5 m/s 772.7 9.0 28Dec 11:59:34 -9.5 -0.3 W at 4.5 m/s 772.3 25.8 28Dec 14:00:00 -3.9 -2.2 W at 1.1 m/s 773.1 2.5 28Dec 14:59:46 -3.8 -2.2 NE at 1.3 m/s 773.0 3.3 28Dec 15:59:31 -3.7 -1.2 W at 1.8 m/s 773.5 7.2 28Dec 17:09:54 -2.8 -1.1 SE at 1.4 m/s 774.0 5.8 28Dec 18:59:44 -4.3 -1.2 W at 5.9 m/s 773.6 11.6 28Dec 19:59:30 -4.5 -0.1 W at 9.5 m/s 773.6 7.0 28Dec 21:59:57 -4.7 -0.1 N at 5.0 m/s 774.8 9.3 Operator comments for the above weather entries 28Dec 09:57:23 Sky overcast. Mixed clouds. 28Dec 11:59:34 Sky overcast. Mixed clouds. 28Dec 14:00:00 Sky overcast. Mixed clouds. Light snow 28Dec 14:59:46 Sky overcast. Stratiform clouds. Snow. 28Dec 15:59:31 Sky overcast. Stratiform clouds. Snow. 28Dec 17:09:54 Sky overcast. Stratiform clouds. Snow. 28Dec 18:59:44 Sky overcast. Stratiform clouds. Snow. 28Dec 19:59:30 Sky cover 70%. Mixed clouds. 28Dec 21:59:57 Sky cover 80%. Mixed clouds. Snow. ** Visibility Tape Information ** Tape # Time of Final Record: DM0162 ** Monitor Tape Information ** Tape # File # Time of Final Record: N21507 2 Total # of antennas used = 27 ** Operator Comments ** START TIME END TIME FORM # #ANTS DOWNTIME (in minutes) 28Dec 9:57:23 Starting program GC028B. 28Dec 9:57:23 The band(s) used is(are): U 28Dec 10:01:20 On source 3C286 with all available antennas. 28Dec 9:57:23 Antenna(s) : 1 13 14 16 17 18 21 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. 28Dec 9:57:23 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. 28Dec 09:57:23 28Dec 22:41:40 C112151 1.00 764.3 Antenna 13 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100268 1.00 764.3 Antenna 14 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100312 1.00 764.3 Antenna 16 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100329 1.00 764.3 Antenna 18 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100376 1.00 764.3 Antenna 24 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100417 1.00 764.3 Antenna 26 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100416 1.00 764.3 Antenna 23 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 22:41:40 T100418 1.00 764.3 Antenna 17 (Data: Lost): EVLA Antenna is being used for EVLA testing 28Dec 09:57:23 28Dec 18:10:00 C119628 1.00 492.6 Antenna(s) 4 (Data: Lost): FOC/ROT Subreflector is not responding to commands. 28Dec 09:57:23 28Dec 22:41:40 C119633 0.90 687.9 Antenna(s) 9 (Data: Corrupted): FRONT END Weak or non-existent fringes in all four IFs. 28Dec 11:04:00 Inspected the VLB instrumentation. No problems found. 28Dec 12:03:00 Inspected the VLB instrumentation. No problems found. 28Dec 12:49:00 28Dec 13:07:00 C119634 1.00 18.0 Antenna(s) 3 (Data: Lost): CRYOGENICS Antenna parked to allow cryo tech to check out A compressor. 28Dec 13:02:00 Inspected the VLB instrumentation. No problems found. 28Dec 14:04:00 Inspected the VLB instrumentation. No problems found. 28Dec 14:16:00 28Dec 14:26:50 C119634 1.00 10.8 Antenna(s) 3 (Data: Lost): CRYOGENICS Antenna parked to allow cryo tech to check out A compressor. 28Dec 14:50:00 Your new operator(s) is(are): Jim Campbell 28Dec 14:51:00 Ran a backup on the Modcomp partition. 28Dec 14:51:00 Inspected the VLB instrumentation. No problems found. 28Dec 15:56:00 Inspected the VLB instrumentation. No problems found. 28Dec 16:44:00 Inspected the VLB instrumentation. No problems found. 28Dec 17:31:00 28Dec 18:18:00 C119605 1.00 47.0 Antenna(s) 22 (Data: Lost): ELECTRICAL Electricians repairing feed heater. 28Dec 18:14:00 28Dec 19:03:00 C119634 1.00 49.0 Antenna(s) 3 (Data: Lost): CRYOGENICS Antenna parked to allow cryo tech to check out A compressor. 28Dec 18:14:00 Inspected the VLB instrumentation. No problems found. 28Dec 19:40:00 28Dec 20:44:00 C119634 1.00 64.0 Antenna(s) 3 (Data: Lost): CRYOGENICS Antenna parked to allow cryo tech to check out A compressor. 28Dec 19:40:00 Inspected the VLB instrumentation. No problems found. 28Dec 20:44:00 Inspected the VLB instrumentation. No problems found. End Time Total Program Time % Downtime Total Downtime (in minutes) (in minutes) 12/28/06 22:41:40 20635.7 36.3% 7483.6