Null test optics for the MMT and Magellan 6.5-m f/1.25 primary mirrors

James H. Burge; David S. Anderson; Dean A. Ketelsen; Steve C. West

doi:10.1117/12.176235

1 June 1994 Null test optics for the MMT and Magellan 6.5-m f/1.25 primary mirrors

James H. Burge, David S. Anderson, Dean A. Ketelsen, Steve C. West

Proceedings Volume 2199, Advanced Technology Optical Telescopes V; (1994) https://doi.org/10.1117/12.176235
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

The instruments used to interferometrically measure the optical surfaces of the 6.5-m f/1.25 primary mirrors for the MMT conversion and Magellan Telescopes must compensate over 800 micrometers surface departure from the best fitting sphere. The errors in the optical test must not contribute more than 0.04 arc seconds FWHM to the final image and the conic constant must be held to 0.01%. This paper presents the design, analysis, fabrication, and certification of the instruments used to measure these giant mirrors to such high accuracy.

Citation Download Citation

James H. Burge, David S. Anderson, Dean A. Ketelsen, and Steve C. West "Null test optics for the MMT and Magellan 6.5-m f/1.25 primary mirrors", Proc. SPIE 2199, Advanced Technology Optical Telescopes V, (1 June 1994); https://doi.org/10.1117/12.176235

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