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TELESCOPE EYEPIECE
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Plastic 25mm Plossl GSO Telescope Eyepiece, Size: 25 mm (dia), Model Name/ Number: Plossl-365 Astronomy
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TELESCOPE EYEPIECE
1.25 "inch 2" Inch Astronomical Telescope Eyepiece Box Eyepiece Bucket Storage Box Small Number Medium Large - Telescope - AliExpress
Telescope Equations
Amazon.com : 1.25in Telescope Eyepiece for Astronomical Telescopes, High Medium Magnification Eyepiece for Moon Surface, Planets, Nebulae, Star Clusters, Diffuse Nebulae (25mm) : Electronics
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Newtonian Reflecting Telescope Designer
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vik dhillon: phy217 - visual use of telescopes
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Telescope stats explained - BBC Sky at Night Magazine