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Kowa TSE-17HD 25x LER Eyepiece

by Kowa
Original price $279.00 - Original price $279.00
Original price
$279.00 - $279.00
Current price $279.00
In stock

Ships To: United States & Canada 🇺🇸 🇨🇦

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TSE-17HD 25x LER Eyepiece by Kowa Optics


Introducing the Kowa TSE-17HD 25x LER (Long Eye Relief) Eyepiece – a premium fixed wide-angle eyepiece offering 25x magnification.

This eyepiece is fully compatible with a range of current Kowa System S spotting scopes including TSN-601, TSN-602, TSN-663M, TSN-664M, and TSN-82SV.

In addition to current models, the TSE-17HD is also compatible with historical spotting scopes such as TSN-603, TSN-604, TSN-661, TSN-662, TSN-663, TSN-664, TSN-1, TSN-2, TSN-3, TSN-4, TS-601, TS-602, TS-611, TS-612, TS-613, TS-614, and TSN-820/820M (requires TSN-EC1A adapter ring).

Please note that the specifications provided here are based on TSN-660M series spotting scopes, and specific specifications may vary depending on the spotting scope model in use.

Explore the world of precision optics with the Kowa TSE-17HD 25x LER Eyepiece


      Kowa's Prominar XD Lenses:

      • Kowa's Prominar XD Lenses incorporate eXtra-low dispersion glass, resembling fluorite crystal in characteristics.
      • These lenses are coupled with a unique dispersion concave lens, effectively minimizing chromatic aberration by a substantial degree, thereby providing an exceptional viewing experience


      What's Included:

      ✓ Kowa TSE-17HD 25x LER Eyepiece

      ✓ Protection caps

      ✓ Instruction manual



      • Extensive Eye Relief: Kowa TSE-17HD 25x LER Eyepiece, a part of the SYSTEM S range, offers an impressive large eye relief for comfortable viewing.
      • Versatile Compatibility: Designed for TSN-660/600 series spotting scopes, TSN-82 SV, and numerous older spotting scope models, ensuring broad usability.
      • Precision at the Shooting Range: With a generous 32mm eye relief, it's a prime choice for shooting range applications, delivering optimal comfort during observations.
      • The package includes a protection caps.



        Exit Pupil Diameter: 2.6mm
        Relative Brightness: 6.8
        Field of view at 1000m: 37m
        Magnification: 25x LER
        Field of view (degree): 2.1
        Twilight Factor: 40.6
        Eye Relief: 32.0mm

        Customer Reviews

        Based on 2 reviews
        Roger B.
        Nice quality eyepiece.

        This eyepiece is very comfortable to use, sharp focus and clear images when I tested at 200 yards.

        Harry Z.
        The best choice if you wear glasses.

        I could look through this eyepiece all day long without straining my eyes. It lives up to it's specifications..