The NATIONAL GEOGRAPHIC 8x42 is a roof prism binocular with a magnification of 8x and an optical aperture of 42mm. A diopter adjustment allows diopter corrections up to +-2. A high quality full coating on all glass elements reduce distracting reflections and improves the light transmission and provides a high contrast particularly in bad light conditions. The binocular is built with a handy and stain resistant rubber surface. A normal tripod connection allows to fix it on a tripod for better observations. For better transport a bag and a comfort strap is included in the delivery.
FEATURES
SCOPE OF DELIVERY
FEATURES
- Roof prisms
- Fully coated optics
- Diopter compensation of ± 2
- Rubber-armored housing
- Tripod thread
SCOPE OF DELIVERY
- Binoculars
- Carrying Strap
- Case
- Instructions
Technical Data
Field of application | |
---|---|
Field of application |
|
Type | |
Type | Standard Binoculars |
OPTICAL SPECIFICATIONS | |
Optical design | Roof |
Magnification | 8 |
Mirror/Lens diam. | 42 mm |
Material prisms | BaK-4 |
Type of coating | Fully coated |
Diopter setting | ✓ |
Field of view at 1000m7 | 110 m |
Field of view | 6.29 degrees |
Light intensity7 | 27.56 |
Twilight factor7 | 18.33 |
GENERAL TECHNICAL DATA | |
Colour | black |
Body material | Plastic |
Focusing system | Central focus wheel |
Eyecups | TwistUp eyecups |
Interpupilar distance min. | 73.69 mm |
Interpupilar distance max. | 73.69 mm |
Material | Plastic |
Body armouring | Rubber/Plastic |
Dust protection caps | dust caps for eyepiece and objective |
Extended warranty | 5 years |
Warnings | Not suitable for children under 3 years of age. |
DIMENSIONS & WEIGHTS | |
Total length | 146 mm |
Total width | 126 mm |
Total height | 53 mm |
Net weight (without access.) | 660 g |
Technical Data
Field of application | |
---|---|
Field of application |
|
Type | |
Type | Standard Binoculars |
OPTICAL SPECIFICATIONS | |
Optical design | Roof |
Magnification | 8 |
Mirror/Lens diam. | 42 mm |
Material prisms | BaK-4 |
Type of coating | Fully coated |
Diopter setting | ✓ |
Field of view at 1000m7 | 110 m |
Field of view | 6.29 degrees |
Light intensity7 | 27.56 |
Twilight factor7 | 18.33 |
GENERAL TECHNICAL DATA | |
Colour | black |
Body material | Plastic |
Focusing system | Central focus wheel |
Eyecups | TwistUp eyecups |
Interpupilar distance min. | 73.69 mm |
Interpupilar distance max. | 73.69 mm |
Material | Plastic |
Body armouring | Rubber/Plastic |
Dust protection caps | dust caps for eyepiece and objective |
Extended warranty | 5 years |
Warnings | Not suitable for children under 3 years of age. |
DIMENSIONS & WEIGHTS | |
Total length | 146 mm |
Total width | 126 mm |
Total height | 53 mm |
Net weight (without access.) | 660 g |