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Proceedings Paper

Optical measurements of a prototype adaptive-optic secondary mirror
Author(s): David L. Modisett; Hubert M. Martin
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Paper Abstract

A prototype adaptive-optic secondary mirror consisting of a centrally located single fixed voice coil actuator and surrounded by 20 fixed point supports has been characterized optically. A phase-shifting interferometer was used to determine the static influence function and calibrate the capacitive sensor of the prototype secondary. A distance measuring interferometer sampling a single point on the secondary surface at 32 kHz was used to obtain time series data of the dynamic response of the optic. The system impulse response and transfer function were measured directly and the mechanical modes of the structure identified. Measurement philosophy, hardware, and test results are discussed.

Paper Details

Date Published: 25 August 1995
PDF: 10 pages
Proc. SPIE 2534, Adaptive Optical Systems and Applications, (25 August 1995); doi: 10.1117/12.217733
Show Author Affiliations
David L. Modisett, Steward Observatory/Univ. of Arizona (United States)
Hubert M. Martin, Steward Observatory/Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 2534:
Adaptive Optical Systems and Applications
Robert K. Tyson; Robert Q. Fugate, Editor(s)

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