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Monday, June 22, 2009

Messier 21

Yep, I think I've definitely hit the sweet spot with this new camera and RCT configuration. The field flattener delivers. The open cluster M21 here, 180 x 15 sec. JPEG frames, 3200 ASA, Astro-Tech Field Flattener, calibrated with 100 bias and 100 darks.

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