The Kowa TSE-Z9B is a premium 20-60x Zoom eyepiece with rotating eyepieces.
Top-Features Kowa TSE-Z9B 20-60x Zoomocular
- Magnification: 20-60x zoom
- Field of view in degrees: 1.9-1.0
- Exit pupil diameter: 3.3-1.1mm
- Relative brightness: 10.9-1.2
- Twilight factor: 36.3-62.9
- Exit pupil distance: 16.5-16.0mm
- Field of view at 1000m: 33-17m
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