Estimating residual aberrations from images taken at the user focus of a telescope compensated by adaptive optics

Oskar von der Luehe; Bertrand Theodore

doi:10.1117/12.176018

31 May 1994 Estimating residual aberrations from images taken at the user focus of a telescope compensated by adaptive optics

Oskar von der Luehe, Bertrand Theodore

Author Affiliations +

Proceedings Volume 2201, Adaptive Optics in Astronomy; (1994) https://doi.org/10.1117/12.176018
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

We present a simple procedure which estimates aberrations in the exit pupil from point source images taken at the compensated focus. The procedure is based on an iterative technique described by J. Fienup. The measured point spread function of the system produced with a reference source at the input to the adaptive optics system, and the exact, properly scaled shape of the (centrally obscured) exit pupil is all that is needed for the procedure to perform. The results can be obtained quickly, e.g., as part of a daily maintenance procedure. We present some sample cases which were produced with the Come-On Plus adaptive optics system at the ESO 3.6 m telescope on La Silla.

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Oskar von der Luehe and Bertrand Theodore "Estimating residual aberrations from images taken at the user focus of a telescope compensated by adaptive optics", Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); https://doi.org/10.1117/12.176018

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