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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); doi: 10.1117/12.826377
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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