Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1114..290w&link_type=abstract
IN: Active telescope systems; Proceedings of the Meeting, Orlando, FL, Mar. 28-31, 1989 (A90-30852 12-74). Bellingham, WA, Socie
Astronomy and Astrophysics
Astronomy
2
Active Control, Atmospheric Correction, Mirrors, Optical Correction Procedure, Reflecting Telescopes, Seeing (Astronomy), Wind Effects, Feedback, Flexible Bodies, Frequency Distribution, Image Analysis, Statistical Analysis
Scientific paper
The frequency bandpass and other characteristics of wind-buffet deformation of large, flexible telescope mirrors lie in a region between ordinary, low-bandpass active optics and high-bypass adaptive optics; confusion therefore emerges between wind-deformation and atmospheric-distortion effects. Buffet correction is presently addressed by an analysis of the possibilities and limitations of the closed-loop principle, using one or more image analyzers in various configurations. It is noted that the characteristics of several important atmospheric parameters are not sufficiently well known to be readily assumed in experimental study. Cross-checking between closed- and open-loop methods appears desirable.
Noethe Lothar
Wilson Raymond N.
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