Model of image degradation due to wind buffeting on an extremely large telescope

Details Model of image degradation due to wind buffeting on an extremely large telescope Model of image degradation due to wind buffeting on an extremely large telescope

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apopt..43..592p&link_type=abstract

Applied Optics, Volume 43, Issue 3, pp. 592-600 (2004).

Physics

Optics

Telescopes, Wind, Atmospheric Optics, Image Restoration

Scientific paper

A parametric model of wind buffeting on an extremely large telescope with a multipod secondary support is described. The model estimates wave-front errors that are due to wind buffeting on a segmented primary, wind-induced secondary figure and position errors, and primary-mirror deformations caused by wind forces on the secondary support. The approach is based on a Zernike expansion of pressure fluctuations, with simple models of stiffness, resonance, and control. The model shows that wind buffeting on a multipod attached to the primary mirror cell significantly degrades the image quality in a large telescope with a slow primary.

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