Had a great discussion today on how to get ISON data. Follow the urls below to get your own!
Comet ISON HLSP Collection:
http://archive.stsci.edu/prepds/ison/
For non-professionals interested in playing with cool Hubble FITS images in general, Max has also been maintaining a broader HLSP collection of Heritage FITS images here:
http://archive.stsci.edu/prepds/heritage/
And many more HLSPs (mostly NOT moving targets) are linked here:
http://archive.stsci.edu/prepds/
DS9 Fits Viewer:
http://hea-www.harvard.edu/RD/ds9/site/Home.html