EAS Publications Series
Volume 8, 2003Astronomy with High Contrast Imaging
|Page(s)||107 - 115|
|Published online||28 May 2003|
Claude Aime and Rémi Soummer (eds)
EAS Publications Series, 8 (2003) 107-115
Phase Contrast methods and their Application to Coronagraphy
UMR 6525, Parc Valrose, Université de Nice Sophia-Antipolis, 06108 Nice Cedex, France
This paper is describing the fundamental notions of phase contrast method introduced by F. Zernike (Zernike 1934) and how it can be applied to coronagraphy. These techniques were first designed for optical surface testing and therefore their use as coronagraphic instrument is not straightforward. This paper is mainly describing the Foucault knife edge test, its later improvement by Zernike and Burch and their effects as coronagraphic concepts. A formal demonstration is given in the case of the Phase Knife Coronagraph.
© EAS, EDP Sciences, 2003
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