Kowa TSE-Z9B – 20x–60x Zoom Eyepiece
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Vai al moduloKowa TSE-Z9B – 20x–60x Zoom Eyepiece for Kowa TSN Spotting Scopes
The Kowa TSE-Z9B is a 20x–60x zoom eyepiece designed for Kowa TSN spotting scopes. It offers a variable 1.0 to 1.9 degree field of view, providing flexibility and optical precision for demanding nature observation and long-range viewing.
Compatibility with Kowa Spotting Scopes
This eyepiece is directly compatible (no adapter required) with 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
- TSN-1 / TSN-2 / TSN-3 / TSN-4
- TS-601 / TS-602
- TS-611 / TS-612 / TS-613 / TS-614
When used with TSN-820 or TSN-820M spotting scopes, the TSN-EC1A adapter ring is required.
Optical Performance
The optical design of the TSE-Z9B ensures an optimal balance between brightness, sharpness and field of view throughout the entire zoom range. The variable exit pupil combined with a consistent eye relief allows for comfortable and precise observation, even during extended viewing sessions.
Technical Specifications
| Magnification | 20–60x (TSN 600/660) · 20–63x (TSN 82SV) |
|---|---|
| Field of View | 1.9–1.0° (TSN 600/660) · 1.8–0.95° (TSN 82SV) |
| Exit Pupil | 3.0–1.0 mm (TSN 600) · 3.3–1.1 mm (TSN 660) · 3.9–1.3 mm (TSN 82SV) |
| Eye Relief | 16.5 mm |
| Field at 1000 m | 33.2–17.5 m (TSN 600/660) · 31–17 m (TSN 82SV) |
| Relative Brightness | 9.0–1.0 (TSN 600) · 10.9–1.2 (TSN 660) · 6.8–1.7 (TSN 82SV) |
| Twilight Factor | 34.6–60.0 (TSN 600) · 36.3–62.9 (TSN 660) · 41.5–71.9 (TSN 82SV) |
Required Adapter
For use with TSN-820 and TSN-820M spotting scopes, the TSN-EC1A adapter ring is required to ensure proper mechanical and optical compatibility.