Fabrication and test of a diamond-turned mirror suitable for a spaceborne photometric heliospheric imager

Andrew Buffington; Kirk G. Bach; Bernhard W. Bach; Erich K. Bach; Mario M. Bisi; P. Paul Hick; Bernard V. Jackson; Peter D. Klupar

doi:10.1117/12.825362

23 September 2009 Fabrication and test of a diamond-turned mirror suitable for a spaceborne photometric heliospheric imager

Andrew Buffington, Kirk G. Bach, Bernhard W. Bach, Erich K. Bach, Mario M. Bisi, P. Paul Hick, Bernard V. Jackson, Peter D. Klupar

Author Affiliations +

Proceedings Volume 7438, Solar Physics and Space Weather Instrumentation III; 74380O (2009) https://doi.org/10.1117/12.825362
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

We have fabricated a diamond-turned low-mass version of a toroidal mirror which is a key element for a spaceborne visible-light heliospheric imager. This mirror's virtual image of roughly a hemisphere of sky is viewed by a conventional photometric camera. The optical system views close to the edge of an external protective baffle and does not protrude from the protected volume. The sky-brightness dynamic range and background-light rejection requires minimal wideangle scattering from the mirror surface. We describe the manufacturing process for this mirror, and present preliminary laboratory measurements of its wide-angle scattering characteristics.

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Andrew Buffington, Kirk G. Bach, Bernhard W. Bach, Erich K. Bach, Mario M. Bisi, P. Paul Hick, Bernard V. Jackson, and Peter D. Klupar "Fabrication and test of a diamond-turned mirror suitable for a spaceborne photometric heliospheric imager", Proc. SPIE 7438, Solar Physics and Space Weather Instrumentation III, 74380O (23 September 2009); https://doi.org/10.1117/12.825362

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