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Last March 2013, KOWA released its latest LARGE FIELD Zoom eyepiece for the TSN-880 and TSN-770 series telescopes.
It is the already popular PROMINAR TE-11WZ Wide Field Zoom Eyepiece.
Technical Features:
- TE-11WZ optical design contains 2 XD lenses. The first KOWA eyepiece to be PROMINAR coated.
- Compared to the 20-60x Zoom eyepiece(TE-10Z) offered for this series, the new TE-11WZ offers a 20% larger field of view.
- The images they deliver are surprisingly sharp even when working at 60x.
- Chromatic aberration is limited to the highest level. We could speak of virtual elimination of chromaticity.
- Its 17mm eye relief remains identical whatever the magnification at which you are working.
Technical specifications:
- Magnification range: 25-60x wide field
- Actual field of view: 2.4° - 1.32°
- Exit Pupil: 3.5 - 1.5mm (TSN-880) / 3.1 - 1.3mm (TSN-770)
- Relative Brightness: 12.3 - 2.3 (TSN-880) / 9.6 - 1.7 (TSN-770)
- Eyepiece Relief: 17mm
- Field of View at 1000m: 42 - 23m
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