ESTIMATION OF IMAGE MOTION FOR WIDE FIELD TELESCOPE UNDER WIND LOADS

Il Kweon Moon, Sangon Lee, Juhee Lim, Joung Ung Lee, Ho-Soon Yang, Yun Woo Lee

Abstract

To evaluate opto-mechanical performances under a certain level of windy environment, an estimation of the image motion is useful for a wide field telescope optical system. The wide field telescope is a Cassegrain telescope composed of two hyperbolic mirrors, a 0.5 m primary mirror and a 0.2 m secondary mirror, and correction lenses and then covers a 2° field of view. We performed the image motion analyses from the dynamic response based on the line of sight (LOS) sensitivity equations, which had been derived from the optical design program Code V, integrated in the finite element models by using NX NASTRAN.

Keywords

wide field telescope, FEA, image motion, dynamic response

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IMEKO-WC-2012-TC15-O3.pdf

DOI

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IMEKO TC

TC15 - Experimental Mechanics

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