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Optical Engineering

Active Optics Correction Of Thermal Distortion Of A 1.8 Meter Mirror
Author(s): E. Pearson; L. Stepp; J. Fox
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Paper Abstract

An active optics system has been built and tested on a prototype 1.8 m lightweight borosilicate glass mirror. Tests of the system have been conducted in two different modes: the system has been used to compensate measured optical surface distortions, and it has been used to correct thermal distortion predicted by computer modeling based on measured mirror temperatures. Both modes were consistently able to reduce rms figure errors on the mirror surface. Test results show that distortions corresponding to astigmatism, coma, spherical aberration, trefoil, and quatrefoil can be effectively countered.

Paper Details

Date Published: 1 February 1988
PDF: 8 pages
Opt. Eng. 27(2) 272115 doi: 10.1117/12.7976655
Published in: Optical Engineering Volume 27, Issue 2
Show Author Affiliations
E. Pearson, National Optical Astronomy Observatories (United States)
L. Stepp, National Optical Astronomy Observatories (United States)
J. Fox, National Optical Astronomy Observatories (United States)

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