23 September 2009 Fabrication and test of a diamond-turned mirror suitable for a spaceborne photometric heliospheric imager
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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.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrew Buffington, Andrew Buffington, Kirk G. Bach, Kirk G. Bach, Bernhard W. Bach, Bernhard W. Bach, Erich K. Bach, Erich K. Bach, Mario M. Bisi, Mario M. Bisi, P. Paul Hick, P. Paul Hick, Bernard V. Jackson, Bernard V. Jackson, Peter D. Klupar, 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); doi: 10.1117/12.825362; https://doi.org/10.1117/12.825362
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