Corrects for the distorting effects of the atmosphere on incoming light. Some systems use a beam splitter, a reference or artificial star and powerful computer processing to deform small tertiary mirror at a frequency of several hundred hertz to compensate for the distortions. Current systems work better at IR wavebands than in optical light.

technology used to improve performance of optical systems through the reduction of rapidly changing optical distortion. It is used to remove atmospheric distortion through the use of astronomical tele [..]

(astronomy,optics) An optical system in telescopes that reduces atmospheric distortion by dynamically measuring and correcting wavefront aberrations in real time, often by using a deformable mirror. [..]