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New Methods for Optical Testing of Large Convex Aspheric Astronomical Mirrors

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Abstract

Non-contact methods for testing of large rotationally symmetric convex aspheric mirrors are proposed. These methods are based on non-null testing with side illumination scheme, in which a narrow collimated beam propagates perpendicular to the axis of testing mirror and when is reflected from its meridional profile. The structure of a reflected beam depends on the shape of mirror. So, to measure the shape of mirror a reflected beam is analyzed. Different techniques for analysis are considered.

© 2010 Optical Society of America

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