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Proceedings Paper

Large sparse-aperture densified-pupil hypertelescope concept for ground-based detection of extrasolar planets
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Paper Abstract

A concept is presented for a 10-meter sparse aperture hypertelescoep to detect extrasolar planets by direct imaging from the ground through the turbulent atmosphere. The telescope achieves high dynamic range with good image quality very close to bright stellar sources using pupil densification techniques and real-time atmospheric correction. Active correction of the perturbed wavefront is greatly simplified by several unique design features of the telescope: 1) use of an array of 19 small subaperture flat mirrors, 2) mounting the flats on a steerable parabolic truss structure, 3) operating in the near-IR, and 4) making the subaperture flats comparable in size to the seeing cells. These features relax the requirements on the wavefront sensing and control system. This paper describes the general concept. The details of design and implementation will be addresed separately.

Paper Details

Date Published: 3 March 2003
PDF: 10 pages
Proc. SPIE 4860, High-Contrast Imaging for Exo-Planet Detection, (3 March 2003); doi: 10.1117/12.457673
Show Author Affiliations
Daniel Y. Gezari, NASA Goddard Space Flight Ctr. (United States)
Richard G. Lyon, NASA Goddard Space Flight Ctr. (United States)
Robert A. Woodruff, Boeing-SVS, Inc. (United States)
Antoine Labeyrie, Observatoire de Haute-Provence (France)

Published in SPIE Proceedings Vol. 4860:
High-Contrast Imaging for Exo-Planet Detection
Alfred B. Schultz; Richard G. Lyon, Editor(s)

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