Article

Space Science Reviews

, Volume 115, Issue 1, pp 299-361

The Cassini Ultraviolet Imaging Spectrograph Investigation

  • Larry W. EspositoAffiliated withUniversity of Colorado, Laboratory for Atmospheric and Space Physics Email author 
  • , Charles A. BarthAffiliated withUniversity of Colorado, Laboratory for Atmospheric and Space Physics
  • , Joshua E. ColwellAffiliated withUniversity of Colorado, Laboratory for Atmospheric and Space Physics
  • , George M. LawrenceAffiliated withUniversity of Colorado, Laboratory for Atmospheric and Space Physics
  • , William E. McClintockAffiliated withUniversity of Colorado, Laboratory for Atmospheric and Space Physics
  • , A. Ian F. StewartAffiliated withUniversity of Colorado, Laboratory for Atmospheric and Space Physics
  • , H. Uwe KellerAffiliated withMax-Planck-Institut für Aeronomie
  • , Axel KorthAffiliated withMax-Planck-Institut für Aeronomie
  • , Hans LaucheAffiliated withMax-Planck-Institut für Aeronomie
    • , Michel C. FestouAffiliated withObservatoire Midi-Pyr’en’ees
    • , Arthur L. LaneAffiliated withJet Propulsion Laboratory
    • , Candice J. HansenAffiliated withJet Propulsion Laboratory
    • , Justin N. MakiAffiliated withJet Propulsion Laboratory
    • , Robert A. WestAffiliated withJet Propulsion Laboratory
    • , Herbert JahnAffiliated withDeutsches Zentrum für Luft und Raumfahrt, Institut für Weltraumsensorik und Planetenerkundung
    • , Ralf ReulkeAffiliated withDeutsches Zentrum für Luft und Raumfahrt, Institut für Weltraumsensorik und Planetenerkundung
    • , Kerstin WarlichAffiliated withDeutsches Zentrum für Luft und Raumfahrt, Institut für Weltraumsensorik und Planetenerkundung
    • , Donald E. ShemanskyAffiliated withUniversity of Southern California, Department of Aerospace Engineering
    • , Yuk L. YungAffiliated withCalifornia Institute of Technology, Division of Geological and Planetary Sciences

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Abstract

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.

Keywords:

Cassini rings Saturn spectroscopy on Titan and on Saturn