Fabrication and testing of the 3.5-m, f/1.75, WIYN primary mirror

David S. Anderson; James H. Burge; Dean A. Ketelsen; Hubert M. Martin; Steve C. West; Gary A. Poczulp; John H. Richardson; Woon-Yin Wong

doi:10.1117/12.167968

1 February 1994 Fabrication and testing of the 3.5-m, f/1.75, WIYN primary mirror

David S. Anderson, James H. Burge, Dean A. Ketelsen, Hubert M. Martin, Steve C. West, Gary A. Poczulp, John H. Richardson, Woon-Yin Wong

Author Affiliations +

Proceedings Volume 1994, Advanced Optical Manufacturing and Testing IV; (1994) https://doi.org/10.1117/12.167968
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The continuing development of rapid fabrication methods for large optics at the Steward Observatory Mirror Lab has resulted in the completion of the WIYN 3.5 m primary mirror in only five months. The use of these methods, though rapid, also resulted in one of the best surface figures we have produced (16 nm rms), excellent microroughness (8 angstroms rms), and very smooth small-scale figure error as determined by the structure function of the surface errors. In this paper, we review the important techniques in the grinding, polishing, and testing of the mirror used to achieve these results.

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David S. Anderson, James H. Burge, Dean A. Ketelsen, Hubert M. Martin, Steve C. West, Gary A. Poczulp, John H. Richardson, and Woon-Yin Wong "Fabrication and testing of the 3.5-m, f/1.75, WIYN primary mirror", Proc. SPIE 1994, Advanced Optical Manufacturing and Testing IV, (1 February 1994); https://doi.org/10.1117/12.167968

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