Physics – Optics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1296..362d&link_type=abstract
In: Advances in Optical Information Processing 4 (SPIE Vol. 1296), p. 362-373
Physics
Optics
Adaptive Optics, Atmospheric Correction, Error Analysis, Images, Telescopes, Aberration, Linear Equations, Optical Data Processing, Wave Front Reconstruction
Scientific paper
A ground-based adaptive optics imaging telescope system attempts to improve image quality by detecting and correcting for atmospherically induced wavefront aberrations. The required control computations during each cycle will take a finite amount of time. Longer time delays result in larger values of residual wavefront error variance since the atmosphere continues to change during that time. Thus an optical processor may be well-suited for this task. This paper presents a study of the accuracy requirements in a general optical processor that will make it competitive with, or superior to, a conventional digital computer for the adaptive optics application. An optimization of the adaptive optics correction algorithm with respect to an optical processor's degree of accuracy is also briefly discussed.
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