Correctability modeling of a large deformable mirror

Mark E. Furber; David Blaszak; Mario R. Pieri

doi:10.1117/12.176119

31 May 1994 Correctability modeling of a large deformable mirror

Mark E. Furber, David Blaszak, Mario R. Pieri

Proceedings Volume 2201, Adaptive Optics in Astronomy; (1994) https://doi.org/10.1117/12.176119
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

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.

Citation Download Citation

Mark E. Furber, David Blaszak, and Mario R. Pieri "Correctability modeling of a large deformable mirror", Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); https://doi.org/10.1117/12.176119

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