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Proceedings Paper

Optical surface measurements for very large flat mirrors
Author(s): J. H. Burge; P. Su; J. Yellowhair; C. Zhao
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Paper Abstract

Flat mirrors as large as 4 meters in diameter can be manufactured to high accuracy, limited by the surface metrology. We present metrology systems that are specifically optimized for measuring very large flats to high accuracy. A large aperture vibration insensitive Fizeau interferometer combined with stitching software provides high resolution surface measurements. Low order shape errors can be measured using scanning slope measurements from precision inclinometers or an autocollimator with scanning pentaprism.

Paper Details

Date Published: 25 July 2008
PDF: 13 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 701817 (25 July 2008); doi: 10.1117/12.790048
Show Author Affiliations
J. H. Burge, College of Optical Sciences, Univ. of Arizona (United States)
P. Su, College of Optical Sciences, Univ. of Arizona (United States)
J. Yellowhair, College of Optical Sciences, Univ. of Arizona (United States)
C. Zhao, College of Optical Sciences, Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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