Effects Of Mirror Surface Ripple On Image Quality

William B. Wetherell

doi:10.1117/12.933538

4 November 1982 Effects Of Mirror Surface Ripple On Image Quality

William B. Wetherell

Proceedings Volume 0332, Advanced Technology Optical Telescopes I; (1982) https://doi.org/10.1117/12.933538
Event: 1982 Astronomy Conferences, 1982, Tucson, United States

Abstract

Mirror surface ripple acts as a phase grating to diffract light out of the central maximum of the point spread function (PSF), reducing image quality. The effects of ripple on image quality are examined with the aid of computer simulations using rotationally symmetric wavefront error models, and through interferometric measurements of a mirror known to have significant surface ripple. Image quality is evaluated in terms related to the performance requirements of large orbital astronomical telescopes that must perform in both ultra-violet and visible light. Techniques for measuring and specifying ripple are discussed.

Citation Download Citation

William B. Wetherell "Effects Of Mirror Surface Ripple On Image Quality", Proc. SPIE 0332, Advanced Technology Optical Telescopes I, (4 November 1982); https://doi.org/10.1117/12.933538

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