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3 - 10 min. exposures at Gain 1, Offset 100. TEC-APO140 (980mm, f/7) and an AP-27TVPH focal reducer, yielding 782mm, f/5.6. Q453HR color CCD camera from CCD-Labs.
20091014_M52_Comb-ddpcrvadj.jpg
All images copyright William J. Shaheen, unless otherwise noted. Do not use or distribute without prior consent.