[support] Module to retrieve images and store locally

Hi, Is there a module that will retrieve images on a hook_cron, then let me reference them locally like imagecache? I would also like to be able to look back over time, say post the last 10 images grabbed at 15 minute intervals during special events like sunspot eruptions. I wan to load some images from noaa.gov and nasa.gov on a regular basis and store them locally. These aren't copyrighted, but the topical ones are constantly updated and disappear if not stored locally. Thanks. -- -Don Pickerel- Fane Software