Physics – Optics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2201..856f&link_type=abstract
Proc. SPIE Vol. 2201, p. 856-866, Adaptive Optics in Astronomy, Mark A. Ealey; Fritz Merkle; Eds.
Physics
Optics
Scientific paper
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.
Blaszak David D.
Furber Mark E.
Pieri Mario R.
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