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5 October 2023 Multiple methods of determining the gravity-sag of light-weighted optics
Tomasz M. Lis, H. Philip Stahl, Stephen Cheney
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Proceedings Volume PC12677, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV; PC126770J (2023) https://doi.org/10.1117/12.2677800
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States
Abstract
Characterizing Gravity-sag (G-sag) is an essential part of developing a large space-based optic. A method to back out gravity sag of a light-weighted optic using a CGH will be demonstrated. The results from the G-sag CGH determination is compared to the G-sag and Zero-G figure obtained during horizontal G-sag testing. The results from the CGH testing are also compared to the G-sag figure determined from modeling.
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Tomasz M. Lis, H. Philip Stahl, and Stephen Cheney "Multiple methods of determining the gravity-sag of light-weighted optics", Proc. SPIE PC12677, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV, PC126770J (5 October 2023); https://doi.org/10.1117/12.2677800
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KEYWORDS
Computer generated holography
Modeling
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