This large aperture, ED70mm binocular is great for viewing the night sky or as a terrestrial binocular for making the most out of a good view. The ED glass optics are fully multicoated for maximum light transmission. Each optical assembly is precisely aligned at the Vixen assembly plant in Japan so as to give the sharpest images possible.
The newly designed high definition ED lens in Vixen's ED103S Refractor Telescope gives excellent optical performance in a short optical tube for easy handling.
The entry-level APO refractor ED80Sf Porta II features high-grade glass and quality components. Coupled with a medium f/7.5 focal ratio, the ED ?S? series provide a sharp, color-free image of high contrast.
New Vixen SD81SII high performance apochromatic refractor with FPL53 SD-glass for demanding observers and astrophotographers with improved optical properties
VISAC (Vixen 6th order aspherical catadioptric) incorporates high-precision 6th order aspherical primary mirror plus 3-element field correction lens, a ring-fixing metal on the objective primary mirror which decreases the lens flare.