Kowa TSN-554 Prominar Pure Fluorite Spotting Scope with Straight Eyepiece

The Kowa TSN-554 spotting Scope with straight eyepiece is a truly unique compact spotting scope featuring a fluorite crystal objective lens, designed to make your journeys truly memorable and immersive.

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At less than a foot long, the straight-through viewing Kowa TSN-554 15-45×55 Spotting Scope is the ideal companion wherever you go to glass. It employs the ultra-low dispersion PROMINAR fluoride glass that eliminates chromatic aberrations that, when coupled with the fully multi-coated optics and two-speed focusing mechanism, produce bright and clear tack-sharp high-contrast images with accurate color rendition for an immersive observational experience. The impressive zoom range allows you to take in a wide field of view for general viewing purposes, with the ability to draw subjects in close for more detailed observations. This version of the TSN-550 is configured with the eyepiece set in-line with the optical tube for straight-through viewing to make acquiring subjects easy and tracking moving subjects fast.

To reduce weight, without sacrificing strength or durability, the chassis is made of a polycarbonate material and wrapped in a slip-resistant armoring. A rubberized and textured zoom collar and focus wheel make adjustments fast and easy, even when wearing gloves. The optical tube is nitrogen filled and O-ring sealed to be waterproof and resistant to internal fogging when moving through extreme temperature changes or environmental conditions. To increase your mounting options, the TSN-554 comes outfitted with both a 1/4″-20 and 3/8″-16 tripod attachment—making it compatible with most photo, video, and field tripods on the market.

Optical Performance
Wide 15-45x fixed zoom eyepiece
55mm aperture
Porro prism optical path
Ultra-low dispersion PROMINAR fluorite glass elements eliminate chromatic aberration, which causes halos, astigmatism, and fringing, for improved color rendition and contrast
Fully multi-coated optics maximize light transmission through the lens to improve image brightness, color rendition, and contrast
132-69′ field of view at 1000 yards
Use and Handling
Straight-though viewing eyepiece makes finding subjects fast and tracking moving targets easy
Integrated aiming sight
Smooth and precise fine and coarse two-speed focusing mechanism moves through the entire focus range in two turns
Rubberized and textured zoom collar and focusing wheel
58mm objective lens filter threads
Twist-up eyecup for comfortable use with or without eyewear
3/8″-16 and 1/4″-20 mount to accommodate most photo, video, and field tripods
Long 16.5-16mm eye relief
3.7-1.2mm exit pupil
Construction Details
Lightweight and impact-resistant polycarbonate chassis
Nitrogen filled, IPX7-rated to be waterproof and resistant to internal fogging when moving through extreme temperature changes and conditions
Oil-resistant KR exterior lens coatings makes it easy for dirt, sap, and oil to be cleaned off without smudges or residue
Retractable sunshade reduces glare and lens flare and keeps snow and rain off the objective for clearer viewing
Extremely lightweight: 28 ounces

Objective Lens Effective Diameter: 55mm
Objective Lens Material: Fluorite Crystal
Minimum Focusing Distance: 3.0m
Length: 271mm
Weight: 810g
Filter thread: 58mm

In the Box

  • Kowa TSN-554 15-45×55 PROMINAR Spotting Scope (Angled Viewing)
  • Neoprene Fitted Carry Case for Protection
  • Cleaning Cloth

Used Sale Return Policy

Inspection Period

We allow a 3 day inspection period on all USED sale items. If, for any reason, you want to return the item within those 3 days, simply contact us to request a return for a refund (3% restocking fee MAY apply. See below for details). By default, we don't allow returns after the 3-day inspection window. Please keep this in mind when you place an order, and if you need us to delay arrival so that you're better positioned to test the item within three days of arrival, we'll be glad to work with you.

Restocking Fee

After the 3-day inspection window has passed, a restocking fee will be applied and will consider the number of days you've had the item, in tandem with prevailing market rental rates.