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M51

M51 imaged from home with the QHY9C one shot color CCD camera. 15 x 300 sec or 1 hour 15 minutes of raw data.

Scope used: Celestron C9.25 with 0.63x reducer
Focal length is 1480mm
Field of view is 31.8 x 42.1 arcminutes

The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting[6] grand-design[7] spiral galaxy in the constellation Canes Venatici. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way Galaxy,[3] but different methods yield distances between 15 and 35 million ly. Messier 51 is one of the best known galaxies in the sky.[8] The galaxy and its companion (NGC 5195) are easily observed by amateur astronomers, and the two galaxies may even be seen with binoculars.[9] The Whirlpool Galaxy is also a popular target for professional astronomers, who study it to further understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.

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M51