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Amateur Telescope Makers of Boston

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Submitted by John Blomquist on 05/05/2013 12:03:22

M-81 & M-82

This single frame photo of the two galaxies was taken on 4 May 2013 under darkish (for Westford) skies.  The photo was taken with a full frame Canon 5D Mk-II fitted with an EF-400mm-DO lens. This 35 Sec. image was taken at f-5.0 and ISO 800, on a G-11 unguided mount while piggy backed on other scopes.  Image was cropped and levels adjusted in PhotoShop.  A minimal amount of P.E./trailing is evident when enlarged.



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