Kowa TSN-99S Prominar Spotting Scope (Straight Viewing, Eyepiece Required)

BH #KOTSN99S • MFR #TSN 99S
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Kowa TSN-99S Prominar Spotting Scope (Straight Viewing, Eyepiece Required)
Key Features
  • Straight-Through Viewing
  • Scope Body Only—Eyepiece Required
  • Massive 99mm Objective Lens System
  • Fluorite Crystal & ED Glass Elements
Representing the largest objective in their flagship series, the straight-through viewing Kowa TSN-99S Prominar Spotting Scope utilizes a combination of extra low-dispersion and pure fluorite crystal glass, coupled with optical lens coatings, to produce views free from chromatic aberrations, high light transmission, and improved color rendition, resolution, contrast, and clarity. Additional design elements include a specially designed ring and bayonet mount that allows the use of a suite of accessories and eyepieces to enhance your user experience and expand the capabilities of your scope. This version of the TSN-99S is offered here without an eyepiece, so you can choose the one that's right for you and pick it up separately.
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Kowa TSN-99S 99mm Spotting Scope Overview

From Manufacturer

Representing the largest objective in their flagship series, the straight-through viewing Kowa TSN-99S Prominar Spotting Scope utilizes a combination of extra low-dispersion and pure fluorite crystal glass, coupled with optical lens coatings, to produce views free from chromatic aberrations, high light transmission, and improved color rendition, resolution, contrast, and clarity. Additional design elements include a specially designed ring and bayonet mount that allows the use of a suite of accessories and eyepieces to enhance your user experience and expand the capabilities of your scope. This version of the TSN-99S is offered here without an eyepiece, so you can choose the one that's right for you and pick it up separately.

Please note that using a filter with this scope may prevent use of the built-in lens hood.

Construction Details
  • Proper functionality of the retractable sunshade is guaranteed exclusively with Kowa brand filters
  • Compact design measures under 15" long
  • Lightweight, strong, and corrosion-resistant magnesium alloy chassis
  • Nitrogen-filled and O-ring sealed to protect from the elements—chassis is resistant to internal fogging in extreme conditions and waterproof
  • Smooth ergonomics make it comfortable and easy to use out in the field for long periods of time
Optical Performance
  • Spotting scope only, optional eyepiece required for proper use—compatible with TE-80XW & TE-11WZ II eyepieces
  • Front XD lens is made from extremely low-dispersion glass and the secondary is made from fluorite crystal glass, creating an optical path free from chromatic aberrations (even at high magnification) with high contrast and crisp clarity
  • 99mm objective lens delivers outstanding low-light performance with exceptional detail
  • Antireflection fully multicoated lenses maximize light transmission and improve color rendition, resolution, contrast, and clarity
  • Proprietary KR coating on the exterior of the lens actively repels dirt, moisture, and dust from collecting on its surface to ensure clear views
Use and Handling
  • Eyepiece socket is set in-line with the body to make finding subjects faster and tracking moving targets easier
  • Dual-focus system: Quick (coarse) focus allows for fast action to bring your subject in to detail in just a few smooth revolutions and Fine focus gives pin-point, finger-tip control offering precise focusing accuracy with minute adjustments possible, even when wearing gloves—increasing performance for applications such as digiscoping when accurate focus is critical
  • Eyepiece quick release button allows the eyepiece to be removed smoothly for quick eyepiece or adapter changes without compromising on a secure connection to the scope body
  • Tripod mount has a removable screw that allows the spotting scope to be attached to either 1/4"-20 and 3/8"-16 heads and quick release plates
  • The orientation of the scope can be changed with the release of a locking button for precise eyepiece placement to improve viewing comfort
  • An easily accessible collar on the eyepiece mount allows for quick connection of current Kowa System accessories, including adapters for digiscoping and a 1.6x extender
  • Lens hood has a built-in aiming sight as a visual aid to assist in finding a subject more rapidly
UPC: 879110008943

Kowa TSN-99S 99mm Spotting Scope Specs

Key Specs
Viewing Angle
Straight
Objective Lens Diameter
99 mm
Minimum Focus Distance
19.7' / 6.0 m
Design
Viewing Angle
Straight
Performance
Objective Lens Diameter
99 mm
Minimum Focus Distance
19.7' / 6.0 m
Features
Fogproof
Yes: Nitrogen Filled
Environmental Resistance
Water-Resistant (Unrated)
General
Filter Thread
105 mm
Dimensions
L: 14.3" / L: 36.4 cm
Weight
64.7 oz / 1835.0 g
Packaging Info
Package Weight
11.76 lb
Box Dimensions (LxWxH)
22.5 x 9.8 x 7.5"

Kowa TSN-99S 99mm Spotting Scope Reviews

Wow! What a scope!

By Daniel
Rated 5 out of 5
Date: 2024-05-24

Absolutely an incredible spotting scope! Clear viewing all the way up to the highest power.

Wonderful Scope - lots of compliments

By Jared
Rated 5 out of 5
Date: 2022-03-30

As a Wildlife Tour Guide I have used the TSN-884 with a 20-60x TE-10z Eyepiece since 2011. The TSN-99 is a great upgrade. My clients have had nothing but compliments on the view and how real everything feels looking through the scope. I tested the TSN-99 to the TSN-884 with the old eyepiece and new TE-11w 30-70x. I will be buying another TE-11w eyepiece for the older 884 because it was a great upgrade alone. The 99 is about 5-10% sharper with the same TE-11w eyepiece compared to the 884 at the same perceived magnification. The brightness increase is welcome, and additional contrast is noticeable especially the shadows in the image. The focus is easier to get razor sharp with a bit slower fine focus adjustment. The field of view of the 30-70 eyepiece at 30x is similar to the old 20-60x eyepiece at 20x. Protip: Put your tripod plate on the more forward screw for balance. The only con of this set up over the old one would be a bit more noticeable heat distortion due to the increased magnification. At major ranges 1 mile plus this is more sharp but a bit harder to see that resolution through the distortion when the temp difference is 15-20 degrees from shade to bright sun. Tested it on a winter day with 20 degrees F in the shape and 42 F in the sun.

See any errors on this page?

Can you use the KOWA TSN-EX16 1.6X EYE PIECE ...

Can you use the KOWA TSN-EX16 1.6X EYE PIECE EXTENDER on the TSN-99 scopes?
Asked by: Henry
Sorry, according Kowa neither of the TSN-EX16 will work on the TSN-99 scope.
Answered by: John
Date published: 2023-12-27
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