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Canon T1i with 160 mm lens piggybacked on Celestron Nexstar 6SE. 67 frames at 15 seconds each f5.0 ISO 3200. No filters.
Stacked in DeepSkyStacker with 25 darks and 15 flats. Processed in Photoshop and cropped about 40% and final touches in Lightroom.
Messier 31 - Andromeda Galaxy. The furthest object visible to the human eye at about 250 million lightyears away. Also it's two companion dwarf galaxies Messier 32 and Messier 110 below and above respectively.
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