M33, The Triangulum Galaxy is a spiral galaxy approximately 3 million light-years from Earth in the constellation Triangulum. It is one of the most distant objects that can be viewed with the naked eye.
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Canon 60D at the prime focus of the KPO 18″ Reflector. 29 frames of 120 seconds each (total exposure 58 minutes), all at ISO 1600. Astronomik CLS filter used in camera. Captured in Nebulosity, processed in StarTools, and finished in Aperture.