The exotic 1.25″ ExtraFlat™ telescope eyepiece design from OVL combines high quality with a surprisingly compact design. The optical designer has successfully removed the peripheral field curvature so that you can enjoy a flat, distortion-free image right up to the edge of the field of view. The optical performance convinces with excellent sharpness, high contrast and good color reproduction. The eyepieces have oversized eye-side lenses for the widest possible field of view and a large 17mm eye relief for spectacle wearers. The adjustable eyecups allow a comfortable view. All lenses have a broadband multi-layer coating and blackened lens edges. The eyepieces are parfocal. The housing is made of high-gloss, black anodized aluminum with wide rubber grip rings. The receptacle is equipped with a thread for 1.25″ filters. Scope of delivery: 16mm eyepiece with 1.25″ receptacle dust caps! Power supply and batteries are not included!