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Proceedings Paper

Generic misalignment aberration patterns and the subspace of benign misalignment
Author(s): Paul L. Schechter; Rebecca Sobel Levinson
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Paper Abstract

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.

Paper Details

Date Published: 27 September 2012
PDF: 6 pages
Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 844455 (27 September 2012); doi: 10.1117/12.925075
Show Author Affiliations
Paul L. Schechter, MIT Kavli Institute for Astrophysics and Space Research (United States)
Massachusetts Institute of Technology (United States)
Rebecca Sobel Levinson, MIT Kavli Institute for Astrophysics and Space Research (United States)
Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8444:
Ground-based and Airborne Telescopes IV
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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