31 May 1994 Estimating residual aberrations from images taken at the user focus of a telescope compensated by adaptive optics
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Oskar von der Luehe, Oskar von der Luehe, Bertrand Theodore, 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); doi: 10.1117/12.176018; https://doi.org/10.1117/12.176018
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