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Designed to give the maximum field of view the human eye can view sharply, these eyepieces incorporate several elements made from Premium Rare-Earth Lanthanum glass to reduce optical aberrations.The LVW eyepiece is designed to give you h an incredible wide rich field of view, while reducing any internal loss of contrast or sharpness. Stunning views of the Moon, Galaxies or extended Nebulae are sure to follow when using this eyepiece. Be careful when viewing with these eyepieces, you just may feel like you are falling into a galaxy. The 17mm LVW eyepiece is designed to give you moderate magnification with an incredibly wide field of view.Rare-Earth Lanthanum GlassMagnification; 2000mm=118X 1000mm=59X 500mm=29XDesign;1.25Lbs , Boxed 5.5 x 2.5 x 2.5 inches
