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Proceedings Paper

Design and analysis of a large-diameter precision optical mount for NFIRAOS
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Paper Abstract

This study describes the design evolution, finite element analysis (FEA) and experimental testing completed to develop the large optical mounts for the Near-Field IR Adaptive Optics System (NFIRAOS), the facility Adaptive Optics system for the Thirty Meter Telescope (TMT). The mount design incorporates a unique combination of bonded flexure-based linear actuators and a roller-chain radial support. Extensive FEA was completed to refine the design to ensure the final mount design will meet the required operational performance. Experimental work was conducted to ensure that the suitability of the bonded interface between the optic and the flexures and to verify that the high bond stiffness did not cause fracture of the glass during thermal cycling.

Paper Details

Date Published: 28 July 2014
PDF: 10 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91478U (28 July 2014); doi: 10.1117/12.2057213
Show Author Affiliations
Joeleff Fitzsimmons, National Research Council Canada (Canada)
Alexis Hill, National Research Council Canada (Canada)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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