TAB.  3  
 
  RELATIVE RESOLVING POWER OF LENSES  
 
  Theoretical, for perfect lenses, as function of the focal ratio      
  ( Reyleigh Criterion for λ=0,56μ )         
  The absolute res. power depends on the diameter,      
  and is measured in arcseconds  
 
  FOCAL RATIO lines / mm      
  1 1640      
  1,4 1170      
  2 820  
  2,8 580  
  4 400  
  5.6 290  
  8 200  
  11 150  
  16 100  
  22 75  
  32 50  
  45 35  
  64 25  
  90 18  
  128 12  
 
    note:     
    for other wavelenghts and other criteria  
    the values may be a little differents