Orion 8245 17mm Stratus Wide-Field Eyepiece This 17mm Orion Stratus eyepiece sports a monster 1-1/4"-diameter eye lens and a generous 20mm eye relief for exceptional viewing comfort An ideal telescope eyepiece for wide-field, moderate magnification views of the Moon, planets and bright deep sky objects Offers a 68 degree apparent field of view for a nice and wide window into the heavens Eyepiece is usable in both 1.25" and larger 2" focusers thanks to its dual-purpose body Optics are fully multi-coated and feature blackened lens edges for maximized light transmission and excellent contrast