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Published online by Cambridge University Press: 08 February 2017
The far-ultraviolet wavelength region between 1216 and ~2000 Å offers unusually favorable conditions for observing a variety of known or predicted diffuse emissions of both interstellar and extragalactic origin. We describe here a proposed instrument for studying those emissions, the Hopkins Ultraviolet Background Experiment (HUBE). HUBE consists of two compact, fast components: a broadband camera (1350-2000 Å) with 2′ resolution and an imaging spectrograph (1230-1800 Å) with 5 Å resolution. These complementary components will be utilized for both a sky survey and for sensitive deep pointings. As either a free-flying Scout-class satellite or as an attached payload on the Space Station, HUBE will make possible an investigation of unprecedented scope into the sources of the far ultraviolet background.