50mm binoculars are ideal astronomy aids!

Save now on Chisos binoculars, which include ED glass and phase-coated prisms!

With their superior optics, impressive aperture and portable size, the Chisos Series ED binoculars are an excellent option for astronomers looking for a grab-and-go instrument for observing some of the brightest celestial treasures whenever the mood strikes. 

These binoculars combine extra-low dispersion (ED) optical glass, phase-coated prisms and fully multi-coated lenses to produce images with astounding clarity and contrast. Each model also is waterproof and nitrogen-purged to create an internal environment that is impervious to fog and fine debris.

Those looking for a companion for other outdoor adventures might want to check out the 32mm model, which is a great compact choice for live events or hiking treks; or the 42mm options, which are perfectly sized for birding and wildlife watching. The Chisos also offer a close focus between 2m and 2.5m, which is ideal for birdwatchers looking to maximize the tiny details they can observe in nearby subjects.