| aspherical telescope 8X40 Technical parameter |
| : |
Test items |
Technical parameter |
| Lens magnification |
8x |
| Exit pupil diameter |
φ40 |
| Exit pupil diameter |
φ5 |
| Exit pupil distance |
14.2 |
| field of view |
8.6° |
| Minimum Focus Distance |
8m |
| Relative brightness |
25 |
| Dusk index |
17.9 |
| Resolution |
≤5.5″ |
| Type of Prism |
Paul |
| Number of lens |
4 sets of 6 pieces |
| Focus system: central focusing |
central adjusting |
| Focusing Lens: internal adjusting |
eyepiece |
| central diopter adjusting range |
-4～+8SD |
| Eye-distance range |
56～72mm |
| overall dimensions |
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| weight |
935g |
| Overall dimensions |
182x60x145 |
| Composition |
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| Outer sheath |
yes |
| tripod bolt |
yes |
| lens cover |
yes |
| Nitrogen filling |
yes |
| aspherical eyepiece , larger field of view. Ideal for outdoor uses and birds observation. |
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| Specifications︰ | aspherical telescope 8X40 |
| Advantages︰ | aspherical eyepiece , larger field of view. Ideal for outdoor uses and birds observation. Classic design, aspherical eyepiece , larger field of view. Ideal for outdoor uses and birds observation. large eyepiece, clear and sharp image. It can provide you with comfortable observing experience. Exquisite design, rubber cover make, can be used in rainy days. Non-waterproof, kept out of water. It can be used together with a tripod mount to keep it steady. shock-resistant and can be used when the light is dim. |
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