Combined interferometry and ray tracing analysis to optimise the alignment of astronomical telescopes

Eli Ettedgui-Atad; John W. Harris; Colin M. Humphries

doi:10.1117/12.20420

1 August 1990 Combined interferometry and ray tracing analysis to optimise the alignment of astronomical telescopes

Eli Ettedgui-Atad, John W. Harris, Colin M. Humphries

Proceedings Volume 1271, Adaptive Optics and Optical Structures; (1990) https://doi.org/10.1117/12.20420
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

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.

Citation Download Citation

Eli Ettedgui-Atad, John W. Harris, and Colin M. Humphries "Combined interferometry and ray tracing analysis to optimise the alignment of astronomical telescopes", Proc. SPIE 1271, Adaptive Optics and Optical Structures, (1 August 1990); https://doi.org/10.1117/12.20420

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