************************************************************************ Program: AC629 Subarray(s): #1 Observer(s): Walter Brisken Operator(s): Jim Campbell Date: Saturday, Apr 6 2002 Configuration: A User Number: 2179 Decommissioned: 16 Source File(s): 086C629B VLBI Ref. Ant: Observing Mode: Continuum VLB Antenna Pad: ** Weather Information ** Time Dew Point Temp. Wind Bar. Pressure 02Apr06 23:30:00 4.5C 10.3C W at 1.8 m/s 782.1mbars 02Apr07 02:48:54 3.5C 6.5C WNW at 7.4 m/s 783mbars Remarks: Operator comments for the above weather entries. Sky Cover is 90%. Cumuloform type. showers vicinity Sky Cover is 90%. Cumuloform type. showers vicinity ** Visibility Tape Information ** Tape # File # Time of Final Record: N16147 1 ** Monitor Tape Information ** Tape # File # Time of Final Record: N16160 1 02Apr07 at 0:00:00 N16160 2 Antenna(s) Used: 1 2 3 4 5 6 7 8 9 10 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 ** Operator Comments ** 02Apr06 23:10:55 Starting program: AC629, observe file: 086C629B. 02Apr06 23:14:00 On source 0447-220 with all available antennas. The band(s) used is(are) X band(s). 02Apr06 23:10:55 Antenna(s) 8 do not have good baseline positions determined for them because they were moved to their present location recently. In the analysis of your data would you please check for any baseline errors especially on these antennas and let the Data Analysts (email - analysts@nrao.edu) know what you find when there are significant baseline errors. Thank you in advance. 02Apr06 23:10:55 The on-line baseline parameters for antenna(s) 4 9 10 11 12 13 16 18 19 24 25 27 have recently been updated (prior to your observing run) to correct for errors resulting from their recent relocations. In the analysis of your data would you please check for any significant baseline errors especially on these antennas and let the Data Analysts (email - analysts@nrao.edu) know what you find when there are significant baseline errors. Thank you in advance. 02Apr06 23:10:55 Antenna(s) 11 is in Subarray #2 for VLBI observations. 02Apr06 23:10:55 - 02Apr07 01:03:30 Form #: C108324 # of Ants: 0.80 Downtime: 90.07 Antenna(s) 8 - SERVO (Antenna ACU, Encoders, Translators) Problem(s); Antenna is on the wrong wrap and is not reaching the sources at the same time as the other antennas. Observing Data: Lost 02Apr06 23:47:00 - 02Apr07 00:17:30 Form #: Weather # of Ants: 1.00 Downtime: 30.50 Antenna(s) 2 - WEATHER (Weather Stations and Instruments) Problem(s); Antenna auto-stowed due to high winds. Observing Data: Lost 02Apr06 23:54:00 - 02Apr07 00:43:00 Form #: Weather # of Ants: 1.00 Downtime: 49.00 Antenna(s) 17 - WEATHER (Weather Stations and Instruments) Problem(s); Antenna auto-stowed due to high winds. Observing Data: Lost 02Apr07 01:03:30 - 02Apr07 03:10:14 Form #: C108324 # of Ants: 1.00 Downtime: 126.73 Antenna(s) 8 - SERVO (Antenna ACU, Encoders, Translators) Problem(s); In addition to wrap confusion, the antenna is now suffering from azimuth motor #2 fault. Antenna stowed due to the windy conditions. Observing Data: Lost 02Apr07 01:15:36 Ran a backup on the Modcomp partition where observe files are kept. 02Apr07 03:10:14 End of program AC629. Total Downtime = 296.3 minutes (4.6% of total time). AsciiFileOut Version: 1.11 -- Version Date: June 20, 1996