M101, Spiral Galaxy in Ursa Major: OGS 14.5" RCT at f/7.9; STL-11000M, LRGB = 180:50:50:50 minutes.
Total exposure time 5.5h
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M101, Spiral Galaxy in Ursa Major: OGS 14.5" RCT at f/7.9; STL-11000M, LRGB = 180:50:50:50 minutes. Total exposure time 5.5h
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