Most likely the ejected shell of an exploded star. The “Bubble Nebula” is approximately 11,000 light years from Earth.

120 minutes of Luminance through Astronomik Hydrogen-Alpha filter.

5 minute sub-frames.

9/21/2009

Image acquired using SBIG St-XME camera through a Meade 12” Lx-200 GPS telescope with  an Astro-Physics .67  telecompressor attached.

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