Precision, range, bandwidth, and other tradeoffs in hexapods with application to large ground-based telescopes

Eric H. Anderson; Michael F. Cash; Paul C Janzen; Gregory W. Pettit; Christian A. Smith

doi:10.1117/12.672947

11 July 2006 Precision, range, bandwidth, and other tradeoffs in hexapods with application to large ground-based telescopes

Eric H. Anderson, Michael F. Cash, Paul C Janzen, Gregory W. Pettit, Christian A. Smith

Author Affiliations +

Proceedings Volume 6273, Optomechanical Technologies for Astronomy; 62731F (2006) https://doi.org/10.1117/12.672947
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

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.

Citation Download Citation

Eric H. Anderson, Michael F. Cash, Paul C Janzen, Gregory W. Pettit, and Christian A. Smith "Precision, range, bandwidth, and other tradeoffs in hexapods with application to large ground-based telescopes", Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62731F (11 July 2006); https://doi.org/10.1117/12.672947

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