Architectures for space astronomical telescopes using Fresnel optics

Details Architectures for space astronomical telescopes using Fresnel optics Architectures for space astronomical telescopes using Fresnel optics

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6265e..62l&link_type=abstract

Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter. Edited by Mather, John C.; MacEwen, Howard A.; de Gr

Physics

Optics

Scientific paper

We have developed a novel chromatic correction scheme for a large aperture space astronomy telescope, using a Fresnel lens as the primary aperture. Systems built around Fresnel optics hold the possibility of drastically reducing mission costs. The use of a Fresnel optic allows a light weight primary lens which results in lighter systems, which in turn can be flown on smaller, less expensive launchers. Costs are also reduced in the manufacture of the primary lens. The performance of the telescope will be given and the tolerancing of the system discussed. The key issue of the mitigation of the intrinsic chromatic aberration will be discussed in detail, as well as deployment methods of a large monolithic lens. It will be shown that architectures based on Fresnel optics can be considered viable and should be considered in the technology selection for future missions.

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