Various Aspects Of Active Optics

Gerard Lemaitre

doi:10.1117/12.960838

20 September 1989 Various Aspects Of Active Optics

Gerard Lemaitre

Proceedings Volume 1114, Active Telescope Systems; (1989) https://doi.org/10.1117/12.960838
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Optical telescopes of unprecedented size, high resolution optical arrays having large number of telescopes and more performant auxiliary instrumentations will be built by strongly applying the concept of active optics. Taking apart developments of adaptative optics relative to seeing compensation, the meaning of "active optics" must be considered as having at least three different senses i) maintaining, in situ, the best figure of the telescope optics during astronomical observations, ii) figuring highly aspheric optics and/or unaxisymmetric optics, and iii) modifying, in situ, the optical figure parameters as, for instance, the asphericity of a Cassegrain mirror for a better field optimization with respect to various focal instruments. This paper discusses some thoughts on these questions and presents some results and astronomical applications.

Citation Download Citation

Gerard Lemaitre "Various Aspects Of Active Optics", Proc. SPIE 1114, Active Telescope Systems, (20 September 1989); https://doi.org/10.1117/12.960838

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