About focal tolerances of the segments of Deutsches Grossteleskop

Christoph F. Kuehne

doi:10.1117/12.20416

1 August 1990 About focal tolerances of the segments of Deutsches Grossteleskop

Christoph F. Kuehne

Proceedings Volume 1271, Adaptive Optics and Optical Structures; (1990) https://doi.org/10.1117/12.20416
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

In order to address the variance in the focal lengths of the segments for the Deutsches Grossteleskop (DGT), a method is delineated to calculate permissible focal tolerances. Sets of arbitrarily distributed delta-f (differences in focal lengths), where for each the average is zero and the standard deviation is normalized to 1 mm, are used to calculate the permissible tolerance. The DGT's correlation function provides the criteria for the analysis, and the results demonstrate that the two types of segmentation considered should have a delta-f of 0.072 for the four-quadrant configuration and of 0.360 for the 13-piece configuration.

Citation Download Citation

Christoph F. Kuehne "About focal tolerances of the segments of Deutsches Grossteleskop", Proc. SPIE 1271, Adaptive Optics and Optical Structures, (1 August 1990); https://doi.org/10.1117/12.20416

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