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Proceedings Paper

Interferometric testbed for sub-nanometer stabilization of environmental motions for testing of advanced space telescopes
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Paper Abstract

In several future space telescope missions, high long-term relative stability between optics is required for testing on the ground, as well as achieving the sensitivity goal in flight. Typically, thermal and seismic drifts on the ground are on the order of 1 μm over few hours, orders of magnitude above the testing requirements. To suppress these environmental motions, we developed a control system that is composed of interferometric sensors and PZT-based actuator. The system provides a stable environment to allow ground testing of the mission requirements. Our results show that this kind of system can provide picometer level stability at long timescale and that it should have many applications.

Paper Details

Date Published: 15 June 2006
PDF: 9 pages
Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62652U (15 June 2006); doi: 10.1117/12.672347
Show Author Affiliations
Kenji Numata, NASA Goddard Space Flight Ctr. (United States)
Jordan Camp, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 6265:
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
John C. Mather; Howard A. MacEwen; Mattheus W. M. de Graauw, Editor(s)

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