22 July 2016 Diamond fly cutting of aluminum thermal infrared flat mirrors for the OSIRIS-REx Thermal Emission Spectrometer (OTES) instrument
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Abstract
We present the fabrication and measurement of monolithic aluminum flat mirrors designed to operate in the thermal infrared for the OSIRIS-Rex Thermal Emission Spectrometer (OTES) space instrument. The mirrors were cut using a conventional fly cutter with a large radius diamond cutting tool on a high precision Kern Evo 3-axis CNC milling machine. The mirrors were measured to have less than 150 angstroms RMS surface error.
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Christopher E. Groppi, Christopher E. Groppi, Matthew Underhill, Matthew Underhill, Zoltan Farkas, Zoltan Farkas, Daniel Pelham, Daniel Pelham, "Diamond fly cutting of aluminum thermal infrared flat mirrors for the OSIRIS-REx Thermal Emission Spectrometer (OTES) instrument", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99123V (22 July 2016); doi: 10.1117/12.2231536; https://doi.org/10.1117/12.2231536
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