Globular cluster M13

Using a 6" f/5 Newtonian reflector with a robotic mount. Twenty exposures (15s each; ISO 3200) on my Canon 50D in the direct focus of the telescope, shot using electronic shutter (FRSP) + intervalometer features of Magic Lantern firmware. Assembled using DeepSkyStacker software. Faintest stars on this photo have a magnitude 16.2m (factor of 3 fainter than planet Pluto).

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Uploaded on June 11, 2016