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Overview of the Far Ultraviolet Spectroscopic Explorer Mission

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arxiv astro-ph/0005529 v1 pith:LYAWC5CG submitted 2000-05-25 astro-ph

classification astro-ph
keywords spectralcoatingsdetectorsexplorerlightmicrochannelmilkyplate
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The Far Ultraviolet Spectroscopic Explorer satellite observes light in the far-ultraviolet spectral region, 905 - 1187 A with high spectral resolution. The instrument consists of four coaligned prime-focus telescopes and Rowland spectrographs with microchannel plate detectors. Two of the telescope channels use Al:LiF coatings for optimum reflectivity from approximately 1000 to 1187 A and the other two use SiC coatings for optimized throughput between 905 and 1105 A. The gratings are holographically ruled to largely correct for astigmatism and to minimize scattered light. The microchannel plate detectors have KBr photocathodes and use photon counting to achieve good quantum efficiency with low background signal. The sensitivity is sufficient to examine reddened lines of sight within the Milky Way as well as active galactic nuclei and QSOs for absorption line studies of both Milky Way and extra-galactic gas clouds. This spectral region contains a number of key scientific diagnostics, including O VI, H I, D I and the strong electronic transitions of H2 and HD.

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Cited by 3 Pith papers

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    astro-ph.HE 2026-07 conditional novelty 7.0 of 10

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  2. Pollux UV & FUV polarimeters: first lab results

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  3. Symbiotic stars in the era of modern ground- and space-based surveys

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