IC 443, (also known as the Jellyfish Nebula), is a supernova remnant in the constellation Gemini. The supernova that formed it occurred approximately 30,000 years ago. Image Details and Processing: Approximately 8 hours of HA and SII in a combination of 30 and 20 minute subframes. Date and Location: Denver, CO. February 5 through March 5, 2007