Design and verification of the Far Ultraviolet Spectrographic Imager (FUV-SI) for the IMAGE mission (original) (raw)
1998, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX
The IMAGE FUV-SI is simultaneously imaging auroras at 121.8 nm (hot proton precipitation) and 135.8 nm (electron auroras). The spectrograph design challenge is the efficient rejection of the intense Lyman-alpha emission at 121.6 nm while passing its Doppler-shifted component at 121.8 nm. The FUV-SI opto-mechanical design, analysis, integration, and verification of performances against environment (thermal and vibration) are discussed in this paper. In absence of STM (protoflight philosophy) environmental constraints at subsystem levels are derived analytically from F.E.M. and used for pre-qualifying optical subsystems.
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