Lacerta SWA eyepiece 20mm

This eyepiece family is the shorter FL versions of the existing SWA70 2" eyepieces. 5 lens elements, fully multi-coated lenses and blackened lens edges for sharp, high contrast views. All have 70 degree FOV, that is only slightly smaller than the 82 degree "Ultry Wide Field" standard. 10mm, 13mm, and 16mm eye relief respectively, they are more convenient than the Plössl eyepieces. Fold-down rubber eyecups, and safety undercut to reduce the possibility of the eyepiece slipping out of the focuser.