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NGC 2359 (Thor's Helmet
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Thor’s Helmet (NGC 2359) located 15,000 light years away in the constellation of Canis Major is an emission nebula. The helmet is like an interstellar bubble, blown as a fast wind from the star near the bubble's center sweeps through a surrounding molecular cloud. The photo consist of 3.5 hours of exposure using a Canon 60Da camera at ISO3200 connected to a TPO 8” astrograph (at f/6) mounted on a Celestron CGEM mount. It needs more data, but this was a test run for the TPO astrograph.
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