Global-scale surface spectral variations on Titan seen from Cassini/VIMS

Details Global-scale surface spectral variations on Titan seen from Cassini/VIMS Global-scale surface spectral variations on Titan seen from Cassini/VIMS

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007icar..186..242b&link_type=abstract

Icarus, Volume 186, Issue 1, p. 242-258.

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Scientific paper

We present global-scale maps of Titan from the Visual and Infrared Mapping Spectrometer (VIMS) instrument on Cassini. We map at 64 near-infrared wavelengths simultaneously, covering the atmospheric windows at 0.94, 1.08, 1.28, 1.6, 2.0, 2.8, and 5 μm with a typical resolution of 50 km/pixel or a typical total integration time of 1 s. Our maps have five to ten times the resolution of ground-based maps, better spectral resolution across most windows, coverage in multiple atmospheric windows, and represent the first spatially resolved maps of Titan at 5 μm. The VIMS maps provide context and surface spectral information in support of other Cassini instruments. We note a strong latitudinal dependence in the spectral character of Titan's surface, and partition the surface into 9 spectral units that we describe in terms of spectral and spatial characteristics.

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