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Pawel Lancucki | all galleries >> Pawel Lancucki - Amateur Astronomy >> Astrophotography >> Messier Objects >> M13 - The Great Globular Cluster in Hercules > M13-001CLS-cal_web.jpg
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M13-001CLS-cal_web.jpg

Another test of the new AP prime focus flattener 67PF562. Single 10min exposure, no flat.


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