Posted 24 November 2012 - 06:32 PM
M31 is one of those large bright objects that can be seen even with a good amount of light pollution, so I think that most of us settle for that view. I have had memorable views of this galaxy with many telescopes but the one that blew my socks off was the view I had with my small 2.6-inch AT-66 semi-APO or ED refractor. I was viewing from a dark sky site on the Blue Ridge Parkway in western NC (a blue zone) with a 13mm Neglar T6 eyepiece, giving a magnification of 27x and a true field-of-view of 02 deg. 40 min.. Wow! The galaxy extended across the whole field-of-view and both dust lanes were visible with direct vision. Never saw that in my 10-inch dob. The dark sky, wide field-of-view and low magnification were the hot ticket for me.
The moral is get to a trully dark site and use your lowest magnification, largest field of view for this very large galaxy.