The Achromatic Phase Knife Coronagraph: Theory and First Laboratory Test

Details The Achromatic Phase Knife Coronagraph: Theory and First Laboratory Test The Achromatic Phase Knife Coronagraph: Theory and First Laboratory Test

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf..555a&link_type=abstract

Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co

Computer Science

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Scientific paper

High dynamic stellar imagery using coronagraphic methods is an ambitious technical challenge. Most of image-plane nulling coronagraphs are facing the wide-band performance problem, i.e. the chromatism. I present a coronagraph concept with high extinction power, which technical implementation remains simple and solves the chromatism problem: the Phase Knife Coronagraph. After describing its theoretical capabilities, I show the first experimental results which demonstrates the feasability of such an instrument.

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