So what's up with asteroid 596 Scheila? All of a sudden it is exhibiting comet-like behavior. The best theory right now is that it collided with a smaller asteroid and what we are seeing is the dust and debris field that has been stirred up.
These images were taken with a remote controlled telescope over the Internet. Check out Slooh.com for more details on their telescopes. These were taken through Dome 1, Canary Island Telescope, which uses an APO.