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Proceedings Paper

Theoferometer for the construction of precision optomechanical assemblies
Author(s): Ashley M. Korzun; Ronald W. Toland; Raymond G. Ohl; Vincent Holmes; Louis R. Worrel
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Paper Abstract

The increasing difficulty of metrology requirements on projects involving optics and the alignment of instrumentation on spacecraft has reached a turning point. Requirements as low as 0.1 arcseconds for the static, rotational alignment of components within a coordinate system cannot be met with a theodolite, the alignment tool currently in use. The 1"theoferometer" is an interferometer mounted on a rotation stage with degrees of freedom in azimuth and elevation for metrology and alignment applications. The success of a prototype theoferometer in approaching these metrology requirements led to a redesign stressing mechanical, optical, and software changes to increase the sensitivity and portability of the unit. This paper covers the characteristic testing of the first prototype, improvements made to design a second prototype, and planned demonstration of the redesigned theoferometer's capabilities as a "theodolite replacement" and low-uncertainty metrology tool.

Paper Details

Date Published: 7 July 2006
PDF: 11 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 627326 (7 July 2006); doi: 10.1117/12.671326
Show Author Affiliations
Ashley M. Korzun, NASA Goddard Space Flight Ctr. (United States)
Univ. of Maryland, College Park (United States)
Ronald W. Toland, NASA Goddard Space Flight Ctr. (United States)
Raymond G. Ohl, NASA Goddard Space Flight Ctr. (United States)
Vincent Holmes, Swales Aerospace, Inc. (United States)
Louis R. Worrel, ManTech International Corp., NASA GSFC (United States)

Published in SPIE Proceedings Vol. 6273:
Optomechanical Technologies for Astronomy
Eli Atad-Ettedgui; Joseph Antebi; Dietrich Lemke, Editor(s)

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