Working model of a gossamer membrane spectrographic space telescope

Thomas D. Ditto; Joe Ritter; John Valliant

doi:10.1117/12.826377

26 August 2009 Working model of a gossamer membrane spectrographic space telescope

Thomas D. Ditto, Joe Ritter, John Valliant

Proceedings Volume 7436, UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV; 74360H (2009) https://doi.org/10.1117/12.826377
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

Thomas D. Ditto, Joe Ritter, and John Valliant "Working model of a gossamer membrane spectrographic space telescope", Proc. SPIE 7436, UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV, 74360H (26 August 2009); https://doi.org/10.1117/12.826377

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