View user photos by aperture 12.5" user photos 15" user photos 18" user photos 18" UC user photos 20" user photos 25" user photos 30" user photos Johannes Brachtendorf photos These images were taken by Johannes Brachtendorf in Rottenburg Germany with an 18" Obsession / ServoCAT / AN / SBIG ST 9E / software derotation - no plattform, no derotator, no adaptive optics. Visit his website: Astrophotography through a Dobsonian Telescope M1 M64 M96 M106 NGC1023 NGC3079 M51 M77 M97 M108 NGC1275 NGC4631 M57 M82 M104 NGC891 NGC2903 NGC4656 View user photos by aperture 12.5" user photos 15" user photos 18" user photos 18" UC user photos 20" user photos 25" user photos 30" user photos