{"paper":{"title":"Generic Misalignment Aberration Patterns and the Subspace of Benign Misalignment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Paul L. Schechter, Rebecca Sobel Levinson","submitted_at":"2012-07-11T14:19:10Z","abstract_excerpt":"Q1: Why deploy N wavefront sensors on a three mirror anastigmat (TMA) and not N + 1?\n  Q2: Why measure M Zernike coefficients and not M + 1?\n  Q3: Why control L rigid body degrees of freedom (total) on the secondary and tertiary and not L + 1?\n  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."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2647","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}