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| | Telescope Eyepiece Formula | |
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| This is a very economically priced high power eyepiece that provides good performance for very little money. It’s designed for high magnification lunar and planetary observing, for splitting binary stars, and for darkening the sky for observing compact galaxies and planetary nebulas. It has very short eye relief that will severely limit the field for eyeglass wearers. Those who must wear eyeglasses while observing due to severe astigmatism would probably be better off using a Barlow and a longer focal length eyepiece with longer eye relief to reach this focal length, rather than buying this eyepiece for use on its own.
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