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Proceedings Paper

Experimental advances in phase mask coronagraphy
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Paper Abstract

Stellar coronagraphy is a key technology for current and future instruments for exoplanet imaging and spectroscopy, both on the ground and in space. We pursue the research on coronagraphs based on circular phase masks and report in this paper on recent advances in terms of the trade between spectral bandwidth and achievable contrast. Circular phase masks combined with colored apodizations prove to be promising options in such coronagraphic systems to reach high contrast gains within the search area over a wide band of wavelengths.

Paper Details

Date Published: 22 July 2010
PDF: 12 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77391Z (22 July 2010); doi: 10.1117/12.857239
Show Author Affiliations
Mamadou N'Diaye, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Instituto de Astronomía, Univ. Nacional Autónoma de México (Mexico)
Kjetil Dohlen, Lab. d'Astrophysique de Marseille, CNRS, Univ. de Provence (France)
Salvador Cuevas, Instituto de Astronomía, Univ. Nacional Autónoma de México (Mexico)
Rémi Soummer, Space Telescope Science Institute (United States)
Celia Sánchez, Univ. Nacional Autónoma de México (Mexico)


Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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