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Spiral galaxy M101 in Ursa Major

Manually, off-axis guided for 7 x 10-minute exposures at ISO 1600, f/6.3.

Modified EOS 600D & Celestron C8 telescope.

Registered and stacked using DeepSkyStacker software; noise reduced using Noel Carboni's tools in Photoshop Elements; curves & colour-balance adjusted using Paint Shop Pro.

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Uploaded on March 20, 2013
Taken on March 12, 2013