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 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 22mm LVW eyepiece is designed to give you Medium-Low magnification with an incredible wide field of view, while reducing any internal loss of contrast or sharpness.This will give you an incredible rich field of view, through all but the longest of focal length telescopes.Rare-Earth Lanthanum GlassMagnification; 2000mm=91X 1000mm=45X 500mm=23XDesign; 1.25Lbs , Boxed 5.5 x 2.5 x 2.5 inches