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Rolf Olsen | all galleries >> Astrophotography >> 10 inch Serrurier truss Newtonian > Larger secondary (70mm) installed April 2012
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Larger secondary (70mm) installed April 2012

Canon PowerShot S5 IS
1/60s f/3.2 at 9.7mm iso200 full exif

other sizes: small medium large original auto
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