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Proceedings Paper

Nanometer-class structural actuators and instruments for subnanometer metrology
Author(s): Alson E. Hatheway
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Paper Abstract

The author has recently completed the development of a series of structural actuators for supporting the segments of the primary mirror in various configurations of NASA's Next Generation Space Telescope. Separately, the author has been developing a `calibrated displacement actuator' for use in calibrating metrology instruments used to make nanometer- scale measurements. This paper reports on the performance of both the calibrated displacement actuator called `HECTOR- 100tm' and the Rubicontm structural actuator. It also discusses the benefits of incorporating a HECTOR-100- type actuator as a hyperfine third stage in a structural actuator for controlling mirror surfaces for very high resolution imaging as possibly in the visible or UV portions of the spectrum.

Paper Details

Date Published: 6 March 2001
PDF: 6 pages
Proc. SPIE 4198, Optomechanical Engineering 2000, (6 March 2001); doi: 10.1117/12.417350
Show Author Affiliations
Alson E. Hatheway, Alson E. Hatheway, Inc. (United States)

Published in SPIE Proceedings Vol. 4198:
Optomechanical Engineering 2000
Mark A. Kahan, Editor(s)

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