31 @ 5 min. (155 min. total)

Images were focused, captured, and aligned with MaximDL. The combined image was adjusted (Levels, Curves) in Photoshop CS. Gaussian blurr filter was applied through a layer mask to reduce noise.

My backyard observatory in southeastern Minnesota.
Note: Taken during a full moon (8/16/08); humidity was high. Temperature: 55F.
Although this appears to be a supernova remnant, it is actually a planetary nebula caused by a Wolf-Rayet star - one that is over 40 times more massive than our sun.