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Proceedings Paper

Combined interferometry and ray tracing analysis to optimise the alignment of astronomical telescopes
Author(s): Eli Ettedgui-Atad; John W. Harris; Colin M. Humphries
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Paper Abstract

A practical method for reducing geometric aberrations resulting from the misalignment of an astronomical telescope is presented. The wavefront distortion is measured with a lateral shearing interferometer placed near the telescope focus. Atmospheric seeing conditions do not need to be particularly good. Ray tracing optimization is applied to the optical design and is combined with the observed aberrations to compute the corrections required for the telescope alignment. Applications to a 0.5m Ritchey-Chretien telescope are discussed.

Paper Details

Date Published: 1 August 1990
PDF: 6 pages
Proc. SPIE 1271, Adaptive Optics and Optical Structures, (1 August 1990); doi: 10.1117/12.20420
Show Author Affiliations
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)
John W. Harris, Royal Observatory Edinburgh (United Kingdom)
Colin M. Humphries, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 1271:
Adaptive Optics and Optical Structures
Joachim J. Schulte-in-den-Baeumen; Robert K. Tyson, Editor(s)

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