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Proceedings Paper

Fabrication and test of a diamond-turned mirror suitable for a spaceborne photometric heliospheric imager
Author(s): Andrew Buffington; Kirk G. Bach; Bernhard W. Bach; Erich K. Bach; Mario M. Bisi; P. Paul Hick; Bernard V. Jackson; Peter D. Klupar
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Paper 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.

Paper Details

Date Published: 23 September 2009
PDF: 12 pages
Proc. SPIE 7438, Solar Physics and Space Weather Instrumentation III, 74380O (23 September 2009); doi: 10.1117/12.825362
Show Author Affiliations
Andrew Buffington, Ctr. for Astrophysics and Space Sciences, Univ. of California, San Diego (United States)
Kirk G. Bach, Bach Research Corp. (United States)
Bernhard W. Bach, Bach Research Corp. (United States)
Erich K. Bach, Bach Research Corp. (United States)
Mario M. Bisi, Ctr. for Astrophysics and Space Sciences, Univ. of California, San Diego (United States)
P. Paul Hick, Ctr. for Astrophysics and Space Sciences, Univ. of California, San Diego (United States)
San Diego Supercomputer Ctr., Univ. of California, San Diego (United States)
Bernard V. Jackson, Ctr. for Astrophysics and Space Sciences, Univ. of California, San Diego (United States)
Peter D. Klupar, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 7438:
Solar Physics and Space Weather Instrumentation III
Silvano Fineschi; Judy A. Fennelly, Editor(s)

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