A new class of optical tests for large convex secondary mirrors

Paolo Spanò

doi:10.1117/12.2631939

29 August 2022 A new class of optical tests for large convex secondary mirrors

Paolo Spanò

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121881B (2022) https://doi.org/10.1117/12.2631939
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Optical tests of large hyperbolic secondary mirrors has been always challenging. Many methods have been proposed and used in the past, including different combinations of auxiliary optics and configurations. Starting from a review of known methods, a new approach has been identified that offers a wide range of applicability, being modular and reusable for other applications. Two classes, one based on traditional null lens optics and a new one that relies on computer-generated holograms, are described.

Conference Presentation

Citation Download Citation

Paolo Spanò "A new class of optical tests for large convex secondary mirrors", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121881B (29 August 2022); https://doi.org/10.1117/12.2631939

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