Generic Misalignment Aberration Patterns and the Subspace of Benign Misalignment
Instrumentation and Methods for Astrophysics
2015-06-05 v1
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.
Cite
@article{arxiv.1207.2647,
title = {Generic Misalignment Aberration Patterns and the Subspace of Benign Misalignment},
author = {Paul L. Schechter and Rebecca Sobel Levinson},
journal= {arXiv preprint arXiv:1207.2647},
year = {2015}
}
Comments
6 pages, 5 figures. SPIE Astronomical Telescopes + Instrumentation