VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BC120DX
Observer:       Chatterjee, S.
Project type:   VLBA
Obs filename:   bc120dxcrd.*
Date/Day:       2004APR09/100
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Cyrus M Reed.                                            
           VCLOCK and GPS DELTA OK.                                             
           UT1-UTC OK (-0.45).                                                  
           WEA: Cloud cover via webcam:                                         
           WEA: SC,HN Cloudy (30%,10%).                                         
           WEA: Night at all other sites.                                       
           WEA: No recent precipitation at any site.                            
     1130  Begin observing. Antennas on source.                                 
1130-1331 *PT not observing due to loss of all communication     COMM   100  121
           with site.                                                           
           NOTE: Tape may still be running at site since the                    
           observing files were sent out before the                             
           communications failure. Any data recorded to tape                    
           should be disregarded as antenna is not pointed.                     
1140-1220 %MK TSMPLOTs show elevated system temperatures         INT     25   10
           on channels 7,8. Suspect RFI.                                        
1150-1210 *FD TSMPLOTs show high system temperatures             INT     50   10
           on channels 1,3,5,7. Suspect RFI.                                    
1150-1210 *KP TSMPLOTs show high system temperatures             INT     50   10
           on channels 1,3,5,7. Suspect RFI.                                    
1225-1235 *SC TSMPLOTs show high system temperatures             INT     13    1
           on channel 3. Suspect RFI.                                           
1225-1235 *FD TSMPLOTs show high system temperatures             INT     50    5
           on channels 1,3,5,7. Suspect RFI.                                    
1225-1235 *KP TSMPLOTs show high system temperatures             INT     50    5
           on channels 1,3,5,7. Suspect RFI.                                    
1255-1305 *FD TSMPLOTs show high system temperatures             INT     50    5
           on channels 1,3,5,7. Suspect RFI.                                    
1312-1314 *OV dropped out of point due to power failure.         COM    100    2
           Repointed.                                                           
     1331  End.                                                                 


Downtime Summary:
	Total downtime : 169 min
	Percentage downtime of observing: 14.0%
	Average downtime per hour : 8.4 min

    Total scheduled observing time (# Antennas): 1210 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.