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Blair MacDonald | all galleries >> Galleries >> astrophotos > M51
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M51

SCO

-60 minute exposure taken at SCO
-Stacked and calibrated using Deep Sky Stacker
-Noise reduced, stretched and sharpened with Paint Shop Pro and Focus Magic

-ISO: 1600
-Focal ratio: f4

Canon EOS 350D ,Meade SN8 8" f4 telescope

other sizes: small medium large original auto
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