EE x 2 in 0.2'' pixel or Diffraction limited (NFM) Visible ... Tip-tilt guide star flux. 2.8' off-axis (x=2',y=2') Position of NGS. 0.4. Loop gain. 3 e- rms ...
At large telescopes, dominant AO error comes. from the high ... (SQS) is not optimal even for 8-m telescopes ... internal monitor on 8-m telescopes ...
A reflective wedge is used to split the two images of the stars onto separate cameras. Using this system high resolution profiles of the surface turbulent layer can be ...