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Proceedings Paper

Working model of a gossamer membrane spectrographic space telescope
Author(s): Thomas D. Ditto; Joe Ritter; John Valliant
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Paper Abstract

The nineteenth century Fraunhofer primary objective grating (POG) telescope has been redesigned with a secondary spectrometer. The POG is embossed on a membrane and placed at an angle of grazing exodus relative to a conventional spectrographic telescope. The result is a new type of telescope that disambiguates overlapping spectra and can capture spectral flux from all objects over its free spectral range, nearly 40°. For space deployment, the ribbon-shaped membrane can be stowed as a cylinder under a rocket fairing for launch and deployed in space from a cylindrical drum. Any length up to kilometer scale could be contemplated.

Paper Details

Date Published: 26 August 2009
PDF: 8 pages
Proc. SPIE 7436, UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV, 74360H (26 August 2009);
Show Author Affiliations
Thomas D. Ditto, 3DeWitt, LLC (United States)
Joe Ritter, Univ. of Hawai'i (United States)
John Valliant, Univ. of Hawai'i (United States)


Published in SPIE Proceedings Vol. 7436:
UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV
Howard A. MacEwen; James B. Breckinridge, Editor(s)

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