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

Daniel Y. Gezari; Richard G. Lyon; Robert A. Woodruff; Antoine Labeyrie

doi:10.1117/12.457673

3 March 2003 Large sparse aperture densified pupil hyper-telescope concept for ground-based detection of extrasolar planets

Daniel Y. Gezari, Richard G. Lyon, Robert A. Woodruff, Antoine Labeyrie

Author Affiliations +

Proceedings Volume 4860, High-Contrast Imaging for Exo-Planet Detection; (2003) https://doi.org/10.1117/12.457673
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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.

Citation Download Citation

Daniel Y. Gezari, Richard G. Lyon, Robert A. Woodruff, and Antoine Labeyrie "Large sparse aperture densified pupil hyper-telescope concept for ground-based detection of extrasolar planets", Proc. SPIE 4860, High-Contrast Imaging for Exo-Planet Detection, (3 March 2003); https://doi.org/10.1117/12.457673

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