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Proceedings Paper

Precision, range, bandwidth, and other tradeoffs in hexapods with application to large ground-based telescopes
Author(s): Eric H. Anderson; Michael F. Cash; Paul C Janzen; Gregory W. Pettit; Christian A. Smith
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Paper Abstract

Hexapods can be an effective means of positioning optics of all sizes, including those within large ground-based telescopes. A hexapod is often a convenient geometry when multiple axes of positioning are required. The paper reviews several small and mid-sized hexapods built for different applications, and emphasizes experience with a three-meter- diameter unit built to position a large optical component. The discussion highlights design tradeoffs in precision, including repeatability, resolution and accuracy, range in multiple axes, and bandwidth of operation, and addresses test and verification of performance. The paper concludes with a discussion and presentation of hexapod concepts for secondary mirror positioning for Thirty Meter Telescope and Cornell Caltech Atacama Telescope.

Paper Details

Date Published: 11 July 2006
PDF: 17 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62731F (11 July 2006); doi: 10.1117/12.672947
Show Author Affiliations
Eric H. Anderson, CSA Engineering Inc. (United States)
Michael F. Cash, CSA Engineering Inc. (United States)
Paul C Janzen, CSA Engineering Inc. (United States)
Gregory W. Pettit, Dysim Inc. (United States)
Christian A. Smith, CSA Engineering Inc. (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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