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The Crescent Nebula, NGC 6888, in Cygnus

Total of 3 hours & 10 min exposure.

Manually, off-axis guided for 19 x 10-minutes, f6.3, ISO 1600. Registered and stacked using DeepSkyStacker software.

Unmodified EOS 40D & Celestron C8 telescope.

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Uploaded on June 24, 2012
Taken on June 23, 2012