VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BC138C
Observer:       C. C. Cheung
Project type:   VLBA
Obs filename:   bc138ccrd.*
Date/Day:       2004JAN30/030
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y 

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Jim Ogle.                                                
           VCLOCK and gps delta check okay.                                     
          %NL had a lot of trouble getting to the correct        FRM            
           focus position; extremely cold temperatures may                      
           have been responsible.  Did manage to finally get                    
           in position before start of the run.                                 
     0600  Begin at all sites except MK, which starts later                     
           on.                                                                  
0600-1545 *NL TSMPLOTs show high system temperatures on          INT     25  146
           channels 5 and 6 (330.99 MHz RCP/LCP). Suspect RFI.                  
0600-1545 *LA TSMPLOTs show high system temperatures on          INT     25  146
           channels 5 and 6 (330.99 MHz RCP/LCP). Suspect RFI.                  
0600-1545 *KP TSMPLOTs show high system temperatures on          INT     50  292
           channels 5 through 8 (330.99 MHz RCP/LCP and                         
           338.99 MHz RCP/LCP). Suspect RFI.                                    
     0645  New operator Cyrus M Reed.                                           
     0700  Readbacks this past hour ok at all sites                             
     0800  Readbacks this past hour ok at all sites except:                     
           KP bad readbacks drive 1 tracks 17,19,21 at 0742 UT                  
0802-0803 *PT Autostowed due to power bump. Repointed.           COM    100    1
     0836  MK Now observing and on source.                                      
0836-1545 *MK TSMPLOTs show high system temperatures on          INT     25  107
           channels 5 and 6 (330.99 MHz RCP/LCP). Suspect RFI.                  
     0900  Readbacks this past hour ok at all sites                             
     1000  Readbacks this past hour ok at all sites                             
     1016  All readbacks OK.                                                    
     1023 *KP bad readbacks: Drive 1, Tracks 15,17.                             
           All other readbacks OK.                                              
     1100  Readbacks this past hour ok at all sites except:                     
           KP bad readbacks drive 1 tracks 15,17 at 1023 UT                     
     1200  Readbacks this past hour ok at all sites                             
     1300  Readbacks this past hour ok at all sites                             
     1400  Readbacks this past hour ok at all sites except:                     
           FD bad readbacks drive 2 all even tracks 02 - 28                     
           at 1309 UT                                                           
     1400  WEA: Cloud cover via webcam:                                         
           WEA: SC,FD,LA,PT,KP Clear skies.                                     
           WEA: HN Broken low clouds. NL Overcast.                              
           WEA: Night at other sites (unknown).                                 
           WEA: No recent precipitation @ any site.                             
     1430  New operator: T. Perreault                                           
     1452  KP wea: clear, no precipitation                                      
     1453  LA wea: clear, no precipitation                                      
     1456  BR wea: scattered high clouds, dish surface is damp                  
     1500  Readbacks this past hour ok at all sites                             
     1507  Readback check ok                                                    
     1538  Readback check ok                                                    
     1545  End.                                                                 


Downtime Summary:
	Total downtime : 692 min
	Percentage downtime of observing: 10.8%
	Average downtime per hour : 6.5 min

    Total scheduled observing time (# Antennas): 6435 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.