VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BE026C
Observer:       Perez-Torres. M.A.
Project type:   VLBA
Obs filename:   be026ccrd.*
Date/Day:       2005JAN09/009
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
     1425  Begin file                                                           
           VCLOCK check ok. SC at -0.060                                        
           UT1-UTC check ok (-0.50)                                             
           GPS delta < 10 us                                                    
           Operator: T. Perreault                                               
          %HN: ~80% of dish covered with snow, seeing elevated                  
           system temperatures                                                  
          %OV wea: raining, seeing elevated system temperatures                 
          %NL: ~70% of dish covered with snow, seeing elevated                  
           system temperatures                                                  
           PT Antenna being used by the VLA for project AL636E.                 
1425-1459 *NL Antenna stowed, motor currents > 20amps            15510  100   34
           AZ#1 blower/lubrication pump circuit breaker fault                   
           and AZ#1 low lube pressure warnings. Called oncall                   
           site tech, stowed antenna.                                           
     1430  Site weather (via webcam)                                            
           SC, HN: mostly cloudy                                                
           NL: overcast                                                         
           FD: clear                                                            
           LA, KP: high thin overcast                                           
     1450  Operator is Sonja Mendoza                                            
     1510  Readbacks okay.                                                      
1512-1531 *SC Antenna parked to allow site tech to               VAC    100   19
           investigate why the temp. is rising in the vertex                    
           room. Site techs are trying to contact HVAC person.                  
1534-1736 *HN WEA: The weight of the snow in the dish is         WEA    100  122
           causing large spikes in the motor currents.                          
           Initiating tracksun to melt some snow out of the                     
           dish                                                                 
     1534 %SC WEA: Precipitation starting.                                      
     1546  MK joins project BE026C                                              
     1546 %MK WEA: wind gusts > 35mph                                           
     1651  Readbacks okay.                                                      
     1716 %MK WEA: Precipitation starting (snow).                               
     1736  HN WEA: The tracksun has done some good, dish is                     
           still ~40% covered with snow. If motor current                       
           problem persists and weather permitting, may place                   
           antenna back into tracksun.                                          
     1738  HN WEA: Increasing clouds.                                           
     1744 %OV WEA: Precipitation starting.                                      
1800-2226 *MK WEA: Site tech has called in with weather          WEA    100  266
           report; due to icing conditions and high winds, the                  
           antenna will be stowed unless weather improves.                      
     1803 %NL 1cm dewar warming, may be enough to                               
           to affect data (15K stage at 34K).                                   
1819-1933 *NL WEA: The weight of the snow in the dish is         WEA    100   74
           causing large spikes in the motor currents.                          
           Initiating tracksun to melt some snow out of the                     
           dish.                                                                
     1828  SC WEA: Rain has stopped, overcast skies.                            
     1843  Readbacks at all stations okay except:                               
           FD bad readback drive 1, track 4.                                    
           LA bad readback drive 2, track 7.                                    
     1933 %NL WEA: Precipitation starting.                                      
     1938  NL 1cm dewar has cooled back down into the normal                    
           range.                                                               
     2023  Readbacks okay.                                                      
     2033 %OV Precipitation starting.                                           
     2120  HN,SC end observation as scheduled.                                  
     2153  NL ends observation as scheduled.                                    
     2153  PT ends VLA link project, joins BE026C.                              
     2153  PT writing on Mark5 disk NRAO-054.                                   
     2213  LA WEA: High broken clouds, dry, light winds.                        
     2226  End.                                                                 


Downtime Summary:
	Total downtime : 515 min
	Percentage downtime of observing: 10.7%
	Average downtime per hour : 6.4 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.