Taken by the Dark Energy Camera of Cerro Tololo Inter-American Observatory in Chile, this accidental picture of Comet Lovejoy must be one of the most beautiful comet portraits we've ever seen.
Update: researcher Brian Nord joined the conversation below and gave us a nice explanation about why and how this imaging was accidental. Thanks a lot!
This was an accidental catch, because Dark Energy Camera scans the sky methodically over a very large region of the sky. Comet Lovejoy only takes up a very small part of the sky, and we didn't intend to point at it, but the camera happened to scanning that part of the sky at that time.