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Whirlpool Galaxy, M51, in Canes Venatici

Manually, off-axis guided for 11 x 5-minute exposures at ISO 1600, f/4.

Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; initial curves adjusted in Canon Photo Professional; final curves & colour-balance adjusted using Paint Shop Pro; final noise reduction using CyberLink PhotoDirector.

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Uploaded on February 22, 2014
Taken on February 22, 2014