An expanding supernova remnant left over from an explosion 35,000 years ago. Most neutron stars left over from supernova explosions are still found near the center of the explosion site.The Chandra Xray telescope has identified the culprit star in IC443 at a considerable distance from the center at about 4:00, making it a runaway star.

4″ Televue Refractor with a ST10XE/CFW8/F/5.4 H-alphaRGB42/5minHalpha,10/5minRGB 2x2bin.