OPUS mentioned in Planetary Society blog

"It's much easier to browse the archived data than it used to be, thanks to the marvelous Outer Planets Unified Search (OPUS) tool at the Rings Node of the Planetary Data System.  It takes OPUS a couple of weeks after the release of the data to ingest it into their database, but after waiting nine to 12 months for the data I don't have a problem waiting an additional two weeks to be able to browse it in such comfort! "

http://www.planetary.org/blog/article/00002608/

btw, we are working on bringing that 2 weeks down to a day or two, stay tuned!