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Pages: 46-53
Year: Issue:  4
Journal: Transactions of Beijing Institute of Technology

Keyword:  interferometryRitcbey-Common testwave aberrations.;
Abstract: The procedure of how to simulate the Ritchey-Common test to derive the relationships between the figure errors of an optical flat and the wave-front aberrations, and to construct a set of influnce functions by ray-tracing program, is here presented. Figure errors of the flat can be extracted from a set of over defined linear equations with the aid of least squares, using the influnce functions and the measured wave-front aberrations for two different Ritchey angles. A test example on a high quality flat 1 meter in diameter is shown.
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