8x40 Binoculars

8x40 BinocularsWith their ample aperture and excellent optics, the National Geographic 8x40 binoculars are a versatile choice that can satisfy bird watchers, nature lovers and even moon gazers. Made of fully multi coated BaK 4 glass, the high end optics deliver images that are rich in contrast and clarity. Their 40mm aperture has the light gathering capacity to produce bright images even in low light conditions and the 8x magnification power reveals well defined

Item Number ES100AZADJ-02

It is height adjustable

holding it securely with a set screw to a standard size barrel 1

and even a smartphone adapter for easy astrophotography

From now on

Dual radial fans accelerate mirror cooling to reach thermal equilibrium quickly

This handy adapter works with any smartphone

In addition to being easy to set up and take down

Operating Temperature -4 - 140 F

folding down to 27-inch disk that is only 4 inches thick

Argon atoms are larger than that of Nitrogen and therefore they are less likely to leak or diffuse their way through the seals over the life of the eyepiece

some other uses include: