saturn • this skin by Björn Jónsson was
"...created from 56 images obtained by the Cassini spacecraft of Saturn's
southern hemisphere in September 2004".
Björn's planetary maps
page first to see if there's a newer version.
It's available here re-saved as a
lower-quality JPEG that's ¼ the original size (though not
noticably different), and packaged with PAT's expected directory structure.