Kowa uses the fluorite crystal exclusively in its flagship spotting scope and large binocular models. The fluorite used to make an optical lens is an artificially grown mono-crystal with "ultra-low dispersion", a characteristic that ordinary optical glass does not have and in addition to using this crystal is the ability to completely eliminate chromatic aberration (color blur). The fluorite crystal produced by the sophisticated processing technology that Kowa has accumulated over the years guarantees the ultimate viewing experience.
The telephoto lens design of using 5 lens elements in 4 groups has successfully shortened the overall length of the scope while keeping a large diameter objective lens without sacrificing optical performance.
The adoption of an inner focusing system has made the prism box light and compact and at the same time decreases the amount of image movement when compared to conventional prism focusing systems.
The highly achromatic objective lens makes the scope as compact as a 60mm class scope without sacrificing performance a must have for the traveler or those who want the power but not the size.
The TE-11WZ and contains 2XD-lenses.The images are delivered with outstanding sharpness even at 60X magnification.Chromatic aberration is limited at the highest level. Eye relief of 17mm remains constant throughout the magnification range. Suitable for the Kowa TSN-883 & 884 spotting scope.
|Filter Diameter||Length||Lens type||Minimum focusing distance||Objective lens diameter||Weight|
|95mm (Filter can be attached to scope)||343mm (13.5')||Fluorite crystal lens||5M (16.4 FT)||88mm||1520g (53.6oz)|
|Exit pupil||Eye relief||Field of view at 1000M||Magnification||Real field of view||Relative brightness||Length||Weight|
|3.5~1.5mm (TSN-880) 3.1~1.3mm (TSN-770)||17.0mm||42~23M||25~60x ZOOM||2.4~1.32 degrees||12.4~2.2 (TSN-880) 9.5~1.6 (TSN-770)||111mm||370g|
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