M27 Dumbbell Nebula 17 September 2007 It was one of the best seeing conditions I have ever had here. Auto guiding had an RMS error of 0.8 pixels - amazing. It was also very cold. After an hour of imaging the scope front lens started to frost up. This image is 15 4 minute exposures, ST-2000XCM, f/6.3 focal reducer. Imaging, dark subtract, clip stack, LRGB creation in Equinox Image. Final composition in Photoshop.

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