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Adaptive cross-correlation algorithm for extended scene Shack-Hartmann wavefront sensing
Erkin Sidick1, Joseph J Green, Rhonda M Morgan
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. erkin.sidick@jpl.nasa.gov
Optics Letters
|February 5, 2008
Abstract:
We present an adaptive cross-correlation algorithm for a large dynamic range extended-scene Shack-Hartmann wavefront sensor. We show that it accurately measures very fine image shifts over many pixels under a variety of practical imaging conditions.