92° Series 17mm Long Eye Relief Waterproof Eyepiece Outdoor combinations of low dispersion and

combinations of low dispersion and high refractive index optical glasses

and there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements

and screw it in

CMOS cameras can even deliver images almost like monochrome cameras

The BaK-4 prisms and fully multi-coated lenses provide exceptional color fidelity and high contrast

92° Series 17mm Long Eye Relief Waterproof Eyepiece Outdoor combinations of low dispersion andExplore Ultra Wide Eyepieces Comfort, Quality, Value. The Explore Scientific 92 Series eyepieces are hyper wide class oculars with extraordinary long eye relief that can transform your visual astronomy experience. You may be startled at the amazingly wide expanse of inky black sky you behold the first time you bring your eye to a 92 Series eyepiece, and after awhile, you may even forget that you have an eyepiece between you and the universe! With an