Physics – Optics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1542..236r&link_type=abstract
In: Active and adaptive optical systems; Proceedings of the Meeting, San Diego, CA, July 22-24, 1991 (A93-39451 15-74), p. 236-2
Physics
Optics
1
Adaptive Optics, Mirrors, Telescopes, Misalignment, Ray Tracing
Scientific paper
High precision movement of telescope mirrors in two-mirror telescopes is examined. Active optics are used for high precision movement of M2 during exposures to introduce a specific amount of decentering coma. It is shown that the decentering coma may be controlled by high accuracy rotation of the mirror around a point near the center of curvature of M2. Basic equations are developed for the displacement of the barycenter of the geometric blur. A relation is obtained for determining the correct position around which the rotation should be performed. The application of these techniques to two-mirror telescopes is discussed. Ray tracing and analytical results were compared and showed good agreement.
Bortoletto Favio
Ragazzoni Roberto
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