Kowa TSN-88A PROMINAR 25-60xW zoom (SKU: 121059 / 12358 TSN-88A KIT)

Designed for the most discerning users, the Kowa TSN-88A Prominar 25-60x scope with the TE-11WZ II varifocal eyepiece is a professional set that delivers outstanding performance. Crafted using the finest materials available, this product offers a unique image quality and exceptional durability.

At the heart of this spotting scope lies a superior low-dispersion optical system featuring a fluorite lens. Fluorite, a natural mineral found near hydrothermal veins and in igneous rocks, possesses an incredibly low refraction index (n = 1.4), surpassing even the best optical glass. This remarkable characteristic enables the scope to capture images virtually free from chromatic aberration, resulting in impeccable color reproduction and excellent contrast. Unlike naturally occurring fluorite, the Kowa TSN-88A Prominar telescope utilizes synthetic fluorite, which eliminates rare earth contamination and the associated greenish or purple tint. However, it is worth noting that processing fluorite presents challenges due to the tendency of calcium fluoride single crystals to chip. To overcome this, Kowa has developed a unique technology for grinding and polishing lenses made from this material over the years, culminating in the production of optical instruments unrivaled in terms of image quality.

To further enhance image quality, the fluorite lenses are coated with a comprehensive multi-layer anti-reflective coating, ensuring sharp and clear images even in low-light conditions. The entire structure is enclosed in a sealed and nitrogen-filled casing, providing resistance against challenging weather conditions such as rain, snow, and low temperatures.

Key Features of the Kowa TSN-88A Prominar 25-60x Scope:

Low-dispersion lens made of pure fluorite with full anti-reflective coatings

External lenses coated with the dirt and scratch-resistant KR™ coating developed by Kowa

TE-11WZ II wide-angle eyepiece positioned at an angle for easy observation of objects above the horizon

Dual focusing mechanism for coarse and fine adjustments

Technical Specifications:

• Design: Angled telescope
• Magnification: 25-60x
• Objective Diameter: 88mm
• Filter Thread Diameter: 95mm
• Low dispersion lens material: Synthetic fluorite
• Optical system coating: Full anti-reflective multi-layer, Kowa KR™ oleophobic coating
• Prism Construction: Porro prism
• Field of View: 42-23m @ 1000m
• Exit Pupil Offset: 17mm
• Exit Diameter: 3.5-1.5mm
• Minimum Observation Distance: 5m
• Relative Brightness: 12.3-2.3
• Twilight Efficiency: 46.9-72.7
• Focus Adjustment Mechanism: Dual (coarse/fine)
• Inert Gas Filling: Nitrogen
• Water Resistance: Yes
• Body Material: Magnesium
• Eyepiece: Removable TE-11WZ II (included)
• Tripod Thread: Dual
• Length: 342mm
• Set Weight: 1840g

Kit Components:

• Kowa TSN-88A Prominar 25-60x Scope
• TE-11WZ II Varifocal Eyepiece
• Lens Cap
• Optics Cleaning Cloth

Guarantee:

Backed by a 10-year warranty, providing you with peace of mind and confidence in your purchase.