Optical Testing Techniques for Highly Aspheric Tertiary Mirrors

Steven P. Maffett; Stephen D. O’Donohue

doi:10.1364/OFT.2010.OThA2

International Optical Design Conference and Optical Fabrication and Testing
OSA Technical Digest (CD) (Optica Publishing Group, 2010),
paper OThA2
•https://doi.org/10.1364/OFT.2010.OThA2

Optical Testing Techniques for Highly Aspheric Tertiary Mirrors

Steven P. Maffett and Stephen D. O’Donohue

Optical Fabrication and Testing 2010

Jackson Hole, Wyoming United States
13–17 June 2010
ISBN: 978-1-55752-893-3

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S. P. Maffett and S. D. O’Donohue, "Optical Testing Techniques for Highly Aspheric Tertiary Mirrors," in International Optical Design Conference and Optical Fabrication and Testing , OSA Technical Digest (CD) (Optica Publishing Group, 2010), paper OThA2.

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Abstract

ITT Geospatial Systems has completed the production and testing of a Highly Aspheric Tertiary (HAT) strip mirror. One of the challenges to successful completion of the optic was to develop testing techniques that could deal with the high slopes encountered with the optical prescription. The off axis conic was successfully processed and this paper documents that separate refractive and holographic null tests are both acceptable methods.

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