VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        GC028B
Observer:       Conway, J.E.
Project type:   VLBI
Obs filename:   gc028bcrd.*
Date/Day:       2006DEC28/362
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y GB EB

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Jim Ogle.                                                
           VCLOCK and gps delta checks okay.                                    
          %High wind gusts at OV.                                               
          %BR has thick snow patches over about half of the                     
           dish surface.                                                        
     0859  Begin at EB, GB, SC, HN, NL.                                         
     0910  Begin at LA.                                                         
0913-2249  FD unable to observe due to a broken AZ axle.         19601  100  816
     0921  Begin at PT.                                                         
     0923  Begin at BR.                                                         
     0940  Begin at KP.                                                         
     0953  Begin at OV.                                                         
     0959  Begin at Y.                                                          
0959-2241 *Y BBCs 7 and 8 experiencing intermittent MCB          19554    5   38
           errors.                                                              
     1052 *Snowing at KP.                                                       
1222-1224 *Doing a snow dump at KP, system temperatures are      WEA    100    2
           very high.                                                           
1224-1630 *Just as KP finished the snow dump, commmercial power  COM    100  246
           died. Antenna autostowed, will not be able to point                  
           the antenna until power is restored. Due to the                      
           weather conditions there it may take a while.                        
           Additional snow accumulation in dish may make it                     
           moot as to when the power comes back, system                         
           temperatures didn't improve much after the snow                      
           dump. Out of project due to snow.                                    
     1230 *Rebooting KP to shut down observing file.                            
     1259  Begin at MK.                                                         
     1440  New operator is Heidi Gerhardt                                       
1457-1459 *OV put into standby due to high winds                 WEA    100    2
     1530 *BR reports clumps of snow on lower half of dish                      
     1539  EB ends observation.                                                 
1616-1618  OV elevation motor current sum > 20 amps              ACU            
1630-1700 *KP snow on dish causing high Tsys                     WEA    100   30
1700-2259 *KP taken out of project due to high Tsys              WEA    100  359
     1925 %PT Precipitation                                                     
     1936 %LA Snowing                                                           
     1944  SC ends observation.                                                 
     2059  GB ends observation.                                                 
     2114  HN ends observation.                                                 
     2228  NL ends observation.                                                 
     2241  Y ends observation.                                                  
     2259  End.                                                                 


Downtime Summary:
	Total downtime : 1493 min
	Percentage downtime of observing: 16.2%
	Average downtime per hour : 9.7 min

    Total scheduled observing time (# Antennas): 9240 min (11)

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.