Orion 8244 13mm Stratus Wide-Field Eyepiece The ultimate in viewing comfort - this 13mm telescope eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief Ideal for moderate-power, wide-field views of the Moon, planets and any deep sky object Provides a 68-degree apparent field of view for a nice and wide window into the heavens Usable in both 1.25" and larger 2" telescope focusers thanks to its dual-purpose body Optics are fully multi-coated and feature blackened lens edges for maximized light transmission and excellent contrast