Paper
13 September 2012 Analysis techniques for adaptively controlled segmented mirror arrays
Author Affiliations +
Abstract
The employment of adaptively controlled segmented mirror architectures has become increasingly common in the development of current astronomical telescopes. Optomechanical analysis of such hardware presents unique issues as compared to that of monolithic mirror designs. Performance analysis issues include simulation of adaptive control, execution of polynomial fitting, calculation of best fit rigid body motions, and prediction of line-of-sight error. The generation of finite element models of individual segments involves challenges associated with correctly representing the geometry of the optical surface. Design issues include segment structural design optimization and optimum placement of actuators. Manufacturing issues include development of actuation inputs during stressed optic polishing. Approaches to all of the above issues are presented and demonstrated by example with SigFit, a commercially available tool integrating mechanical analysis with optical analysis.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gregory J. Michels and Victor L. Genberg "Analysis techniques for adaptively controlled segmented mirror arrays", Proc. SPIE 8447, Adaptive Optics Systems III, 84475O (13 September 2012); https://doi.org/10.1117/12.924307
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Cited by 2 scholarly publications.
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KEYWORDS
Actuators

Finite element methods

Error analysis

Adaptive control

Adaptive optics

Mirrors

Monte Carlo methods

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