VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BS160B
Observer:       Shen, Z.Q.
Project type:   VLBA
Obs filename:   bs160bcrd.*
Date/Day:       2006DEC15/349
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Jim Ogle.                                                
           VCLOCK and gps delta checks okay.                                    
           SC reports clear skies.                                              
          %LA reports overcast skies.                                           
           KP reports broken high clouds.                                       
          *NL weather station reporting a dew point above the    WEAST          
           air temperature. Pointing equation may be thrown                     
           off.                                                                 
     1535  Begin.                                                               
1535-1901 *Holding off on starting observing at BR; weather      WEA    100  206
           conditions are bad and they had power problems                       
           overnight, the site techs will need to check on                      
           conditions when they arrive on site.                                 
1535-1540 *HN rotation position error.                           FRM    100    5
     1545  BR techs on site, checking things out.                               
     1608 *BR techs report heavy, wet snow in dish. It's                        
           melting but it may be a few more hours before it                     
           will be worth pointing the antenna.                                  
     1611 %OV reports mostly cloudy conditions.                                 
     1828  NL weather station now reporting normal dew point                    
     1842 %SC Precipitation                                                     
     1940 *HN cloudy.  System Temps elevated.                                   
     1944  MK reports clear sky with winds gusting NE                           
     2104  KP reports broken high thin clouds.                                  
     2149  HN ends observation                                                  
     2213  SC ends observation                                                  
2221-2232 *MK shutting down observing to investigate Mark5       REC    100   11
           problems                                                             
     2301  NL ends observation                                                  
     2310 %OV reports overcast skies with gusty winds                           
     2336  End.                                                                 


Downtime Summary:
	Total downtime : 222 min
	Percentage downtime of observing: 4.6%
	Average downtime per hour : 2.8 min

    Total scheduled observing time (# Antennas): 4810 min (10)

Notes:
    * = Entries where data was affected.
    % = Entries where data may have been affected.
    & = Entries where the site tech was called out.
  WEA = Weather entries.
  MF# = Maintenance form or major downtime category associated with a problem.
  %AD = The percentage of an antenna affected by a problem.
  AMD = Total antenna-minutes downtime for a problem.
 Tsys = System Temperature (TP/SP x Tcal/2)
  ACU = Antenna Control Unit
  FRM = Focus/Rotation Mount
  RFI = Radio Frequency Interference
  VME = Site control computer
   CB = Circuit Breaker
 vclock = Program that compares site clock time to a standard.