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27 September 2012 Generic misalignment aberration patterns and the subspace of benign misalignment
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Q1: Why deploy N wavefront sensors on a three mirror anastigmat (TMA) and not N + 1? Q2: Why measure M Zernike coefficients and not M + 1? Q3: Why control L rigid body degrees of freedom (total) on the secondary and tertiary and not L + 1? The usual answer: “We did a lot of ray tracing and N, M, and L seemed OK.” We show how straightforward results from aberration theory may be used to address these questions. We consider, in particular, the case of a three mirror anastigmat.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul L. Schechter and Rebecca Sobel Levinson "Generic misalignment aberration patterns and the subspace of benign misalignment", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 844455 (27 September 2012);


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