James P. Cleary, University of Arizona, Steward Observatory, Tucson, Ariz.
As part of an ongoing effort to improve the imaging of the Multiple Mirror Telescope (MMT) south of Tucson, our group is concerned with developing adaptive techniques. When a star's light passes through the earth's turbulent atmosphere, the wavefront is distorted and the imaging of a ground-based telescope suffers. The Center for Astronomical Adaptive Optics (CAAO) builds instruments which measure and correct for this wavefront aberration. The wavefront sensing part of the instrument was rebuilt using 18 Picomotors™ to simplify alignment.
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