Meade Instruments 07740 Series 5000 1.25-Inch Xtreme Wide Angle 5.5-Millimeter Eyepiece (Black) Large 82-degree apparent field of view 7-element, multi-coated lenses with blackened edges and rotating adjustable eyecups Sharp optimal performance with low chromatic aberration Threaded to work with Meade's 1.25-inch astronomy filters