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Yashma 2,8/300mm Telephoto Lens Astronomical Test Images

Images obtained by a Canon EOS 1000D with Nikon Lens Adapter

Region around Polaris, lens mounted on a tripod, 400 ASA setting.
Raw JPEG images, no processing, no flatfield, urban sky.

30 seconds at f:2.8
30 seconds at f:3.2
30 seconds at f:4.0
30 seconds at f:5.6