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There is a good article in the latest Astronomy now (march) , I havent read it all, but, they say 2" is mostly for larger aperature, longer focal length telescopes and quote " ...experinced observers will stress that observing comfort not an ultra wide field, is the top consideration and so a long 'eye relief' value is the most important factor..." as far as Im concerned you need to see how an eyepiece fits your eye, your telescope (or the one your saving for) and your purpose, have a read of the reviews on eyepieces on cloudy nights forum and search on here for "eyepiece" that shoud keep you busy..
Roger
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