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Analyses of Hubble Space Telescope (HST) images of Saturn obtained from August 2003 to March 2004, with extensive support from ground-based telescopes, have been used to characterize the cloud morphology and motions in its atmosphere few months before the Cassini encounter. We present data on the major meteorological features as potential targets for Cassini observations. We extend our previous measurements...
Hubble Space Telescope (HST) images (1997-2002) do not show a hexagonal wave in the south pole that is a counterpart of the northern one (D. A. Godfrey 1988, Icarus76, 335-356). However, a polar jet similar to that in which the north polar hexagonal wave is embedded has been discovered in the southern hemisphere. The HST images also reveal the existence of a small polar ''cap'' about 2000 km in diameter...
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