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Posted by Kip Crawford on April 8, 2001 09:19:38 UTC

Basically the secret to seeing any type of distinguisable galaxy structure is an absolutely clear and un-turbulant sky. On a clear and calm night with no light pollution at all, I can distinguish "arm structure" on M51 Whirlpool galaxy. As I can with M33 Triangulum Galaxy, not to mention Andromeda (M31). This was using an 8" f/6 Dobs. I use a 26mm, 17mm with a 2x barlow. That's basically all I need. I do have 7mm Nagler, but I save that one for planets. On a good night, the Owl Nebula (M97) & M108 can be seen pretty darn good also various globular clusters. Your 10" is adaquate enough for many galaxies including the Virgo cluster and many NGC objects as well. Good transparent, dark skies is what you need. Clear skies!

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