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Optical Engineering

New method for estimating wavefront from curvature signal by curve fitting
Author(s): In Woo Han
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Paper Abstract

We present a new method to estimate the wavefront with the curvature-sensing technique proposed by F. Roddier. Instead of solving a Poisson equation for the curvature signal, we estimate the wavefront by direct least-squares curve fitting of the curvature signal with derivatives of Zernike polynomials. It is computationally simpler and faster. From computer simulations, it is shown that the curve-fitting method gives quite accurate wavefront estimation. It is especially useful when only a fixed number of aberration modes are of interest, as in the optical-axis adjustment of a telescope.

Paper Details

Date Published: 1 April 1995
PDF: 6 pages
Opt. Eng. 34(4) doi: 10.1117/12.196542
Published in: Optical Engineering Volume 34, Issue 4
Show Author Affiliations
In Woo Han, Korea Astronomy Observatory (South Korea)

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