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Posted by Bob Sal on August 13, 2001 20:34:58 UTC

Hi Thom;
The distance you keep your eye from the Eyepiece is called eye-relief. This distance differes from eyepiece to eyepiece. Smaller focal length, like a 5MM usually have a short eyerelief and you need to keep you eyeball very close to the eyepiece. This is true of most of the cheaper eyepieces. Some advertise long eyerelief. They are better for eyeglass weareres since you don't have to get so close to the eyepiece. The Teleview Radients have 20MM eyerelief on all their eyepiece sizes. I have an 8MM, very nice. They also have adjustable eyeguards. They run $228 and are worth every penny.
That's it;

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