If you combine 2 individual refractors into one device, a bio-telescope is created. The resulting possibilities are fantastic: two-eyed observation of planets AND deep-sky objects with the highest resolution, color corection and contrast. APM offers you exclusive devices.
Make a great view even better with Vixen's BT81S-A Binocular Telescope. You will see spectacular views of comets and star clusters. The Magnesium Fluoride coated, air space doublet design, dramatically reduces chromatic aberration for magnificent views.
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.