Design of Pure and Hybrid Occulter Systems for THEIA

Details Design of Pure and Hybrid Occulter Systems for THEIA Design of Pure and Hybrid Occulter Systems for THEIA

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345805c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #458.05; Bulletin of the American Astronomical Society, Vol. 41, p.362

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The proposed THEIA mission is an effort to image terrestrial planets around other stars using a space-based telescope and an occulter flying in formation. This system is known as a "hybrid" system, as it proposes to use both the occulter and an apodized pupil Lyot coronagraph in the telescope to suppress the starlight; it is contrasted with a "pure" occulter system, which does all of the starlight suppression with the occulter. We present a general procedure for creating a hybrid system, and compare the size, distance, and alignment tolerances with a pure occulter system of comparable performance specifications.

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