 
  
  
  
  
 for a CVF scan observation with 
CAM04
 for a CVF scan observation with 
CAM04
Since the array is read continuously, and without synchronization 
with the drive mechanism of the filter wheel, one exposure is lost 
at the beginning and at the end of the measurement at each point of 
the scan, this adds an overhead of  at each 
point, or, for the complete scan, a total of:
 at each 
point, or, for the complete scan, a total of:
 
The time needed to turn the filter wheel between two points is very short, and can be accounted for by the extra exposures added above.
There is a system constraint on the power dissipated by the instruments in the ISO focal plane unit which limits the frequency of activation of the motors to 6 position changes per minute.
One must add the overhead due to the DRK and CLN OPERATIONS when they have been selected.
Find  corresponding to  the selected dark 
procedure in Table
 corresponding to  the selected dark 
procedure in Table  or
 or  
 min applicable.
min applicable.
 =
 =  +
 +  +
 
+  +
+ 