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Proceedings Paper

Correctability modeling of a large deformable mirror
Author(s): Mark E. Furber; David Blaszak; Mario R. Pieri
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Paper Abstract

A correctability model of a large deformable mirror in a center-of-curvature test configuration is developed using finite-element techniques. The mirror is a one-meter diameter, solid ULE facesheet with electrostrictive actuators. The correctability model allows simulation of the performance of the active optical system, as measured by the wavefront error (optical path difference) over the aperture, in response either to commands to the actuators or to noise/disturbance processes. The performance of the closed-loop active optical system, assuming interferometric measurement of the wavefront error, is analyzed as a function of the number of actuators, the breadth of the actuator influence functions, and the spatial content of the disturbance aberration. The measures of performance used are: the correctability ratio, the required actuator stroke and the forces applied to the mirror.

Paper Details

Date Published: 31 May 1994
PDF: 11 pages
Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); doi: 10.1117/12.176119
Show Author Affiliations
Mark E. Furber, Litton Itek Optical Systems (United States)
David Blaszak, Raytheon Itek Optical Systems (United States)
Mario R. Pieri, Litton Itek Optical Systems (United States)

Published in SPIE Proceedings Vol. 2201:
Adaptive Optics in Astronomy
Mark A. Ealey; Fritz Merkle, Editor(s)

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