[Elecraft] Why predistortion ?

[Brian Hunt]

Usually called adaptive optics these days. The laser is a "guide star".  

73,
Brian, K0DTJ

> On Sep 15, 2020, at 16:39, Fred Jensen <k6dgw at foothill.net> wrote:
> 
> Didn't the term "pre-distortion" originate in the astronomy world where one creates an artificial star with a powerful laser, and then distorts the telescope mirror in real time to minimize atmospheric effects [twinkling]?