Long-term stable active mount for reflective optics

C. Reinlein; A. Brady; C. Damm; M. Mohaupt; A. Kamm; N. Lange; M. Goy

doi:10.1117/12.2234729

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22 July 2016 Long-term stable active mount for reflective optics

C. Reinlein, A. Brady, C. Damm, M. Mohaupt, A. Kamm, N. Lange, M. Goy

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Proceedings Volume 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II; 99121N (2016) https://doi.org/10.1117/12.2234729
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

We report on the development of an active mount with an orthogonal actuator matrix offering a stable shape optimization for gratings or mirrors. We introduce the actuator distribution and calculate the accessible Zernike polynomials from their actuator influence function. Experimental tests show the capability of the device to compensate for aberrations of grating substrates as we report measurements of a 110x105 mm² and 220x210 mm² device With these devices, we evaluate the position depending aberrations, long-term stability shape results, and temperature-induced shape variations. Therewith we will discuss potential applications in space telescopes and Earth-based facilities where long-term stability is mandatory.

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C. Reinlein, A. Brady, C. Damm, M. Mohaupt, A. Kamm, N. Lange, and M. Goy "Long-term stable active mount for reflective optics", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99121N (22 July 2016); https://doi.org/10.1117/12.2234729

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