Overview This kit for your NP101is comes with: 4” Ring Mount - Satin 18.2 DeLite Eyepiece 2" 90º Everbrite w/2”-1¼” HiHat Adapter Description 4" Clamshell-style Mounting Ring - Stain These rings clamp onto your telescope to provide an attachment point for Tele Vue mounts. Felt lining on interior surface protects telescope finish. Rings include two mounting channels for Tele Vue finder accessories For TV-102/(iis), TV-NP101/(is) or any telescope with outside tube diameter of exactly 4-inches. Finish matches focuser body and dew shield of current production telescopes 18.2mm DeLite 62° Apparent Field Eyepiece Just as Delos eyepieces were developed based on Tele Vue's Ethos eyepiece design advancements, DeLite is the logical step toward a smaller, more economical and lightweight version of Delos. Model # EDE-18.2 Focal Length (mm) 18.2 Barrel Size (in.) 1¼" Apparent Field of View (deg.) 62 Eye Relief (mm) 20 Weight (lb / oz) 0.48 / 7.6 Field Stop (mm) 19.1 90° Everbrite Diagonals Whiter and brighter images. Simply put, that is the benefit the Everbrite mirror coating. This exotic, dielectric, nonmetallic coating is 99% reflective across the full visual spectrum, resulting in the "whitest," most natural image available. The coating is painstakingly applied to Pyrex with a surface accuracy of a 1/10 wave flatness. To ensure performance, every mirror is optically inspected under conditions far more critical than a diagonal mirror is ever used in typical telescopes. In this way, Tele Vue can guaranty that the Everbrite will permit your telescope to operate at its fullest potential. The Everbrite is offered in both 1¼" and 2" models. The diagonal bodies of each are machined from solid blocks of aluminum. Permanent alignment is assured. The one piece body construction also means heavy accessories can't force the diagonal body to "unscrew" from the barrel as with other brands. Both the 1¼" and 2" models feature brass clamp rings, anti-reflection threads and 1¼" and 48mm filter threads respectively.
