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M12 resides approximately 18,000 light years from Earth. Globular clusters are thought to be some of the oldest formations in our Milky way galaxy.

40 minutes each of Red, Green and Blue

Five minute sub-frames.

07/26/10

Image acquired using SBIG St-10XME camera with Astrodon filter set through 10” Astro–Tech AT10RC Ritchey-Chretien telescope.