Vixen Optics gives you a complete observational rig with the BT81S-A 81mm f/5.9 Binocular Telescope with Pro Accessory Package. The BT81S-A binocular telescope features achromatic glass lenses combined with anti-reflection fully multi-coated optics that maximize light transmission while virtually eliminating chromatic and spherical aberration. The 81mm objectives and 480mm focal length produce a relatively fast f/5.9 optic for astroimaging or photography utilizing eyepiece imaging systems. Views through the telescope are bright and clear with true color rendition and high-contrast, and objects can be brought into sharp focus without comas or halos.
Two ultra-wide angle 14mm eyepieces, that are included, produce a competent mid-range 24x magnification - ideal for observing the Moon, comets, asteroids, and meteor showers - and are compatible with most 1.25" eyepiece filters to further enhance the view. Each ocular is individually focused for precise pin-point views for every user, and accepts any 1.25" telescope eyepieces for changing the magnification to fit specific observation needs. The binocular is designed with the eyepieces set at a 45° angle to make long observation sessions comfortable whether viewing celestial or terrestrial subjects. Viewing with both eyes open eliminates the fatigue normally associated with holding one eye closed, as with traditional telescopes. Similarly, the angled oculars are more comfortable, especially when the scope is aimed at or near the zenith. With both eyes open, true stereoscopic vision is maintained, providing a rich depth of field rarely experienced during astronomy sessions.
A manual alt-az mount is specifically designed for Vixen binocular telescopes and provides an easy way to find and track near and deep sky objects, or more earth-bound subjects, without excessive shake. Finding your subjects is made faster with the included XY Red Dot Finder that fits on the integrated shoe. Rounding out the platform is an adjustable-height aluminum tripod and a convenient accessory tray. With a minimum height of 25" and a maximum of 39", observers of most sizes can comfortably use this telescope standing up or sitting down.