Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.0306l&link_type=abstract
American Astronomical Society Meeting 203, #03.06; Bulletin of the American Astronomical Society, Vol. 35, p.1205
Astronomy and Astrophysics
Astronomy
Scientific paper
In recent years, coronagraphy has emerged as a viable alternative for future space based extrasolar planet imaging missions. In particular, NASA is currently studying the tradeoffs between utilizing a nulling interferometer or a coronagraph for its Terrestrial Planet Finder Mission. One particularly promising approach to coronagraphy is the use of shaped pupils for high contrast. In a companion paper we present various optimal shapes for achieving high contrast in the focal plane. In this paper we present the sensitivity of these designs to various wavefront aberrations. We have discovered a strong dependence among the sensitivity, the type of coronagraph, and the mask geometry. These results are used to establish the residual wavefront error specifications and the requirements on the wavefront control system. We gratefully acknowledge the support of the Jet Propulsion Laboratory of the National Aeronautics and Space Administration for this work.
Kasdin Jeremy N.
Kilston Steven
Lieber Michael
Vanderbei Robert J.
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