Mike Crowle
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20 July 2012
The North America Nebula in Cygnus
Canon EOS 40D
,Pentacon 300mm f4
8 x 4-minutes at ISO 1600; 6 x 5-minutes at ISO 1000. Lens piggybacked on C8 telescope for manual guiding. Images registered and stacked in DeepSkyStacker software.
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