Camera: FLI- ML11002M with FLI (7 position filter wheel CFW-5-7) 

Total Exposure: 6.6 hours Ha for Luminance + RGB 1 hr each (unbinned)

September 2012: Chico, California, USA 

Comments: This image shows a small portion of an immense supernova reminant the exploded some 8,000 years ago. The above image captures some of that filamentary and gigantic shock in Ha light. Hydrogen atoms being excited by atomic collisions glow.