Tele Vue Tele Vue-NP101is 4"/101mm Refractor Telescope

The Tele Vue-NP101is 4"/101mm Refractor Telescope from Tele Vue is a stellar leader in the field of high end imaging telescopes. Tele Vue's craftsmanship and optical excellence is legendary and this APO pushes the envelope of excellence. The Tele Vue-NP101is refractor offers a 540mm focal length with an f/5.4 in a precision crafted instrument designed for CCD astro-photography. The Nagler-Petzval design uses widely spaced doublets to produce a flat focal plane over a relatively narrow field of view. The "is" designation denotes an instrument capable of accepting Imaging Systems by offering a specific mechanical architecture for photography. The Tele Vue-NP101is is as optically, mechanically, and functionally near perfection as possible for imaging up to 50mm diagonal chips without detracting from the excellence of its visual capabilities.