Great starter eyepiece that is a step up from generic plossls. With a 1.25" barrel and 17mm focal length, this compact and lightweight eyepiece gives bright, crisp, and wide-angle views of the Moon, planets, and deep-sky sights with any telescope. High-index glass with broadband multi-coatings enable a wide 65 degree apparent field of view with excellent color correction and minimal image distortion. Anti-reflection threads enhance image contrast. Fold-down rubber eyecups. Black anodized aluminum. Threaded for standard 1.25" filters. Parfocal with other eyepieces in the same series.