Design of the Far Ultraviolet Spectroscopic Explorer spectrograph

Abstract
The Far Ultraviolet Spectrograph Explorer (FUSE) is a delta class explorer mission that will perform 30,000 resolution spectroscopy from 900 - 1248 angstroms with unprecedented sensitivity. The design presented here derives from requirements necessary to meet the science objectives and technical and programmatic considerations. Meeting these various requirements has resulted in a design that is completely different from the Phase A concept, which proved to be infeasible within the FUSE constraints. We present the design philosophy, current design parameters for the instrument, and raytrace analyses of the instrument spectral and imaging performance.
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