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.
Date issued
2012-09Department
Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space ResearchJournal
Ground-based and Airborne Telescopes IV
Publisher
Society of Photo-Optical Instrumentation Engineers (SPIE)
Citation
Schechter, Paul L., and Rebecca Sobel Levinson. “Generic Misalignment Aberration Patterns and the Subspace of Benign Misalignment.” Edited by Larry M. Stepp, Roberto Gilmozzi, and Helen J. Hall. Ground-Based and Airborne Telescopes IV, 844455 (September 17, 2012). (SPIE Proceedings; volume 8444). © SPIE.
Version: Final published version
ISBN
0819491454
9780819491459
ISSN
0277-786X