Wikipedia
Tele Vue Optics is a Chester, New York-based astronomical optics company known primarily for its premium brand of speciality eyepieces and apochromatic refractor telescopes. Founded in 1977 by Al Nagler, an optical engineer from The Bronx who designed simulators used in the Apollo program, the company originally made projection lenses for large projection-screen televisions, but is well known in the astronomy community for its products.
Prior to October 1, 2006, Tele Vue's corporate headquarters has also served as the primary distribution point for Vixen America, a subsidiary of the Japan-based Vixen corporation, with the two companies building equipment that are compatible with each other, especially the Tele Vue refractor with Vixen's "sphinx" "go-to" mount. Although the company is no longer the principal distributor, Vixen America still maintains its address at Tele Vue's New York location.