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Designing and testing the coronagraphic Modal Wavefront Sensor: A fast non-common path error sensor for high-contrast imaging

Wilby, M J; Keller, Christoph U; Haffert, S Y; Korkiakoski, Visa; Snik, Frans; Pietrow, A


Non-Common Path Errors (NCPEs) are the dominant factor limiting the performance of current astronomical high-contrast imaging instruments. If uncorrected, the resulting quasi-static speckle noise floor limits coronagraph performance to a raw contrast of typically 10−4, a value which does not improve with increasing integration time. The coronagraphic Modal Wavefront Sensor (cMWS) is a hybrid phase optic which uses holographic PSF copies to supply focal-plane wavefront sensing information...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Conference paper
Source: Proceedings of SPIE Volume 9909: The International Society for Optical Engineering
DOI: 10.1117/12.2231303
Access Rights: Open Access


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