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M 57 Ringnebel

Posted on 7. Juni 2013 By
Planetery nebulas

M57

Focal Length 1200,0 mm
Resolution 0,96″/Pixel  (1×1 Binning)
CCD ATIK 383L+  @  -20°C
Telescope TS ONTC 12″ f/5,3  + ASA Reducer/Corrector 0,73x @  ASA DDM60 Pro
Filter Baader LRGB
Exposure time L:R:G:B  60:60:60:60 mins (4 hrs total)
Subs: L: 18 x 200s R,G,B: 9 x 400s
Date April-May 2013

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