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Best Seller | Telescope for Adults 300mm Focal Length Refractor Telescope 70mm Aperture Professional Astronomy Refractor Telescope for Beginners Focus Type: Manual Focus more | FREE shipping go to store |
ABOUT MAGNIFICATION The focal length of the eyepiece combined with the focal length of the telescope determines the magnification power. To calculate the power of your telescope with any particular eyepiece simply divide the focal length of the... more | $39.99 $35.00 FREE shipping go to store |
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