KOWA TSN-99A 99mm PROMINAR spotting scope - oblique view

KOWA 99mm PROMINAR spotting scope (oblique view)

Crystal clear in the truest sense of the word

At the heart of all Kowa PROMINAR flagship spotting scopes are the unique lenses made of pure fluorite crystal. For the TSN-99 PROMINAR, the largest lens ever produced was developed, with an effective diameter of 99 mm. Even in low light, it offers outstanding optical performance with crystal clear detail and free of chromatic aberration.

Crystal clear - an expression you hear often in the optics world. A piece of pure fluorite crystal, crafted with the utmost care, is used in the form of a perfectly polished and fully coated lens to realize the definition of crystal clear vision. For the first time in a Kowa spotting scope, an ultra-low dispersion XD lens is used for the convex lens of the objective. Coupled with the concave lens made of pure fluorite crystal with its special dispersion properties, chromatic aberration is reduced even more dramatically. This combination means that color fringing is no longer perceptible, even at high magnifications. This technology defines a new standard of color brilliance and is the result of decades of development work by Kowa.

Dual-Focus

The dual-focus mechanism provides the best possible conditions for accurate focusing. The mechanism has been refined to allow perfect focus adjustment. Quick focus allows rapid adjustment to bring the subject into focus with just a few smooth turns, while fine focus allows pinpoint control even when wearing gloves and provides the ultimate in focusing accuracy. The responsive focusing system is geared to not only facilitate conventional observing, but also in specialized applications such as digiscoping, this technology brings key advantages for pinpoint focus adjustment.

Form & Function

Form and finish make a Kowa spotting scope iconic and distinctive. Starting with the classic green spotting scope body with its contours and black design elements, the body is elevated to a new level of elegance and lines. But looks are not everything, every shape element, no matter how small, has been optimized in the design phase to ensure not only good looks but also the best possible comfort and ease of use. Perfect ergonomics combined with superior optical properties create a spotting scope that will keep you well equipped for years of use.

Rugged, Lightweight & Transportable

The TSN-99 PROMINAR series body is made of 100% magnesium alloy, making it one of the lightest yet most compact spotting scopes in its class with a large objective aperture. This, in addition to its superior optical capabilities, makes it more portable than many other models. A fully waterproof and nitrogen-filled spotting scope housing, as well as the Kowa KR coating on the front lens, make the spotting scope reassuringly rugged and resistant to the elements.

Perfected for digiscoping

The TSN-99 PROMINAR is 100% compatible with the KOWA SYSTEM range of accessories, giving you access to interchangeable eyepieces, a range of digiscoping adapters for DSLR and system cameras as well as smartphones. Other accessories such as extenders or mounting rings for astro-eyepieces are also available. An extraordinarily flexible optical tool for many applications.