The Cassini Ultraviolet Imaging Spectrograph Investigation

Details The Cassini Ultraviolet Imaging Spectrograph Investigation The Cassini Ultraviolet Imaging Spectrograph Investigation

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ssrv..115..299e&link_type=abstract

Space Science Reviews, Volume 115, Issue 1-4, pp. 299-361

Physics

57

Cassini, Rings, Saturn, Spectroscopy On Titan And On Saturn

Scientific paper

The Cassini Ultraviolet Imaging Spectrograph (UVIS) is part of the remote sensing payload of the Cassini orbiter spacecraft. UVIS has two spectrographic channels that provide images and spectra covering the ranges from 56 to 118 nm and 110 to 190 nm. A third optical path with a solar blind CsI photocathode is used for high signal-to-noise-ratio stellar occultations by rings and atmospheres. A separate Hydrogen Deuterium Absorption Cell measures the relative abundance of deuterium and hydrogen from their Lyman-α emission. The UVIS science objectives include investigation of the chemistry, aerosols, clouds, and energy balance of the Titan and Saturn atmospheres; neutrals in the Saturn magnetosphere; the deuterium-to-hydrogen (D/H) ratio for Titan and Saturn; icy satellite surface properties; and the structure and evolution of Saturn’s rings.

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