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Kowa TE-17HD 25x LER eyepiece

  • 10 YEAR WARRANTY

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Suitable for the following Kowa spotting scopes:
TSN-601, TSN-602, TSN-603*, TSN-604*,  TSN-661*, TSN-662*, TSN-663*, TSN-664*, TSN-663M, TSN-664M, TSN-82SV
* No longer in product range.

This eyepiece can also be used with some of our historic spotting scope models no longer in our product portfolio:
TSN-1/2/3/4
TS-610/611

Eyepiece Converters


TSN-EC2
Required when using a previous model TSN-820/820M series eyepiece with a TSN-880/770 series.

TSN-EC1A
Required when using a TSN-82SV/660/600 series eyepiece with a TSN-820/820M series.
TSN-EC3
Required when using a TSN-660/600 series eyepiece with a TSN-880/770 series.

Product Specification

Exit pupil Eye relief Field of view at 1000 M Magnification Real field of view Relative brightness Twilight factor
2.4mm (TSN 600) 2.6mm (TSN 660) 3.0mm (TSN 82SV) 32mm 36.7M (TSN 600/660) 35M (TSN 82SV) 25x (TSN 600/660) 27x (TSN 82SV) 2.1 degrees (TSN 600/660) 2.0 degrees (TSN 82SV) 5.8 (TSN 600) 6.8 (TSN 660) 9.0 (TSN 82SV) 38.7 (TSN 600) 40.6 (TSN 660) 47.1 (TSN 82SV)