Jellyfish Nebula
Also known as IC443, the Jellyfish in the upper right of the image is about 5,000 light years away in the constellation Gemini. It is the remnant of a supernova that exploded around 30,000 years ago.
This image was captured by Mel Martin with an SBIG STL-11000 astronomical camera and a Takahashi 5-inch refractor telescope, from his backyard observatory near Tucson. The image took three hours of total exposure, 2 hours through a hydrogen-alpha filter, and one hour of color data.