VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BT081A
Observer:       Taylor,G.
Project type:   VLBA
Obs filename:   bt081acrd.*
Date/Day:       2005FEB18/049
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Brian Willard.                                           
           WEA: all sites dark.                                                 
           LA writing MkV, VSN NRAO-058, Bank A.                                
           UT1-UTC= -0.54 all sites.                                            
           Vclock values nominal.                                               
           GPS delta less than 10 microseconds all sites.                       
           WEA: rain LA,PT.                                                     
     1148  Begin, with all antennae on source.                                  
1154-1157 *PT: power glitch, repointed.                          COMM   100    3
1159-1202 *PT: power glitch, repointed                           COMM   100    3
1204-1217 *SC: FRM rotation will not lock.                       15359   50    6
     1207 %MK: bad readback track 29, drive 1.                                  
           Other readbacks OK at MK.                                            
     1212  WEA: clear SC.                                                       
     1212  WEA: high thin clouds with snow HN.                                  
     1218  WEA: rain FD,LA.                                                     
1220-1224 *PT: power glitch, repointed.                          COMM   100    4
1226-1949 *SC: subreflector having problems locking in rotation  15359   50  221
           at 4cm position.                                                     
1227-1230 *PT: power glitch, repointed.                          COMM   100    3
1232-1315 *PT: stowed for power problems.                        COMM   100   43
     1307  Readback tests good all sites.                                       
     1315  Readback tests good at all sites.                                    
1322-1324 *PT: power glitch, repointed.                          COMM   100    2
     1326  WEA: rain LA.                                                        
1329-1331 *PT: power glitch, repointed.                          COMM   100    2
1332-1435 *PT: stowed for power problems.                        COMM   100   63
     1353  WEA: clear NL                                                        
     1353  WEA: overcast with rain FD.                                          
     1353  WEA: overcast with rain LA,PT,KP.                                    
     1429  HN bad readback drive 2 track 4; all other sites                     
           ok                                                                   
1430-1519 *BR tape on drive 2 dumped vacuum, site tech called    REC    100   49
           will go out to take care of the problem.                             
     1440  New operator: T. Perreault                                           
     1451  KP wea: broken low clouds, no precipitation                          
     1507  LA wea: overcast, fog, light rain                                    
     1543  Readback check ok                                                    
     1602  OV wea: rain                                                         
     1723  MK wea: clear                                                        
1741-1747 *HN ran out of tape. Site tech mounted new tape.       HUERR  100    6
     1906  SC End of file.                                                      
     1949  End.                                                                 


Downtime Summary:
	Total downtime : 405 min
	Percentage downtime of observing: 8.4%
	Average downtime per hour : 5.1 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.