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Introduction to stellar coronagraphy with entrance pupil apodization

Published online by Cambridge University Press:  28 May 2003

Claude Aime ,
Rémi Soummer ,
C. Aime  and
R. Soummer
C. Aime
Affiliation:
UMR 6525 Astrophysique, University of Nice Sophia-Antipolis, 06108 Nice Cedex 2, France
R. Soummer
Affiliation:
UMR 6525 Astrophysique, University of Nice Sophia-Antipolis, 06108 Nice Cedex 2, France
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Abstract

The general formalism for Lyot and Roddier & Roddier coronagraphy is detailed. The influence of the mask size, chromatism and central obscuration are discussed. The necessity of entrance pupil apodization for coronagraphy is introduced from the fundamental limitation that appears in the classical technique. Prolate spheroidal functions are presented as the natural apodizations for coronagraphy.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 8: Astronomy with High Contrast Imaging , 2003 , pp. 79 - 92
Copyright
© EAS, EDP Sciences, 2003

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