Sadr region in Cygnus, H alpha


Superb conditions with high transparency, flat-line guiding and near-theoretical star diameters: a great image!

My back yard; June 29, 2012, 10:30 PM - 3:30 AM. Parsec 8300M with H-alpha filter on TV-85 at f/5.6; guided; 16x1000s exposures.



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