20x120 IV/ 25x120
Features
- Large 120mm objective diameter realises a brighter, high-resolution image
- The Binocular Telescope 20x120 IV with a superior optical system achieves a sharp image with various aberrations effectively compensated
- The Binocular Telescope 25x120 enables high-power and dynamic observation with superior image flatness while realising a wide field of view (64.7° apparent field of view)
- Long eye relief design ensures a clear field of view. Horn-shaped rubber eyecups are employed for easier viewing.
- Airtight waterproof structure prevents rain and night dew entering. Fogproof construction filled with nitrogen gas keeps the binoculars fog-free inside. High corrosion-proofing and shake-resistance features maintain performance over an extended life.
- Equipped with a solid fork mount, easy handling is achieved with 360° horizontal rotation and -30° (downward) to +70° (upward) tilting
- Using a durable pillar stand w/adapter (optional) enables stabler, easier observation
Specifications
| 20x120 IV | 25x120 | |
|---|---|---|
| Magnification (x) | 20 | 25 |
| Objective diameter (mm) | 120 | 120 |
| Angular field of view (real) (°) | 3.0 | 2.9 |
| Angular field of view (apparent) (°) *1 | 55.3 | 64.7 |
| Field of view at 1,000 m/yd. (m/ft) | 52/156 | 50/150 |
| Exit pupil (mm) | 6.0 | 4.8 |
| Relative brightness | 36.0 | 23.0 |
| Eye relief (mm) | 20.8 | 18.9 |
| Close focusing distance (m/ft) | 133/436.4 | 210/689.0 |
| Length (mm/in.) | 680/26.8 | 672/26.5 |
| Width (mm/in.) | 454/17.9 | 454/17.9 |
| Height (mm/in.) | 160/6.3 | 160/6.3 |
| Weight (kg/oz.) | 14/493.8 | 14/493.8 |
| Interpupillary distance adjustment (mm/in.) | 58-74/2.3-2.9 | 58-74/2.3-2.9 |
| Diopter adjustment (m-1) | -5 - +3 | -5 - +3 |
| Structure | Waterproof (up to 2m/6.6 ft for 10 minutes)*2 and nitrogen gas filled | |
- *1Apparent field of view is calculated based on the ISO14132-1:2002 standard.
- *2The binocular telescope is waterproof, and will suffer no damage to the optical system if submerged or dropped in water to a maximum depth of 2m/6.6 ft for up to 10 minutes.
