Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998baas...30r.764c&link_type=abstract
American Astronomical Society Meeting, 191, #128.09
Astronomy and Astrophysics
Astronomy
Scientific paper
The Global Imaging Monitor of the Ionosphere (GIMI) is one of nine scientific instruments aboard the Advanced Research and Global Observation Satellite (ARGOS) to be launched into polar orbit in early 1998. As its name implies, the primary objective of GIMI is remote sensing of the ionosphere and upper neutral atmosphere, through imaging of airglow emissions and stellar occultations. However, it also has objectives in ultraviolet astronomy, including all-sky surveys of point and diffuse sources in the 92-110, 135-160, and 135-200 nm wavelength ranges. GIMI consists of two electron-bombarded CCD cameras with 10-degree-square fields of view and 1 mrad angular resolution, mounted on a two-axis gimbal. The GIMI camera #1, sensitive in the 92-110 nm range, will obtain the first large-area starfield imaging survey in the below-Lyman-alpha wavelength range. The #2 camera will image diffuse sources (nebulae and diffuse background radiation) to fainter levels and over larger areas of the sky than previous investiga tions in the longer wavelength ranges. It is expected that all-sky surveys in each wavelength range, as well as deeper exposures on targets of special interest, will be achievable in the nominal one-year mission duration.
Carruthers George R.
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