18 July 2016 Optical design and optical properties of a VUV spectrographic imager for ICON mission
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Abstract
In the frame of the ICON (Ionospheric Connection Explorer) mission of NASA led by UC Berkeley, CSL and SSL Berkeley have designed in cooperation a new Far UV spectro-imager. The instrument is based on a Czerny-Turner spectrograph coupled with two back imagers. The whole field of view covers [± 12° vertical, ± 9° horizontal]. The instrument is surmounted by a rotating mirror to adjust the horizontal field of view pointing by ± 30°. To meet the scientific imaging and spectral requirements the instrument has been optimized. The optimization philosophy and related analysis are presented in the present paper. PSF, distortion map and spectral properties are described. A tolerance study and alignment cases were performed to prove the instrument can be built and aligned. Finally straylight and out of band properties are discussed.
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Jerome Loicq, Jerome Loicq, Christian Kintziger, Christian Kintziger, Alexandra Mazzoli, Alexandra Mazzoli, Tim Miller, Tim Miller, Cathy Chou, Cathy Chou, Harald U. Frey, Harald U. Frey, Thomas J. Immel, Thomas J. Immel, Stephen B. Mende, Stephen B. Mende, "Optical design and optical properties of a VUV spectrographic imager for ICON mission", Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 990507 (18 July 2016); doi: 10.1117/12.2232588; https://doi.org/10.1117/12.2232588
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