To reduce distortions such as elongations and blurriness caused by the curvature of the "objective" lens—the convex lens at the far end of the telescope—Galileo ground a lens larger than he ...

Lightweight and powerful, the Response from Tract Optics is a woodland-hunting optic with a palatable price-point that ...

The Wild M8 uses the CMO design and its main parts are the binocular head, the main body and the objective lens. The binocular head consists of the two eyepieces and a pair of prisms that create ...

Their 8x magnification and 32-mm objective lenses make them powerful enough to let you see sunspots, yet they are portable, easy to aim and can be held steady — all of which are crucial ...

A light and compact scope with powerful and bright optics, the M151 has a 12-40x magnification with a 60mm objective lense diameter ... the scope’s objective lens. The M151 is also fielded ...

Optics: BK-7 Solar filter: White-light solar filter (ISO 12312-2:2015(E)) Design: Porro prism Magnification: 20x Objective lens diameter: 50 mm Waterproof/fog-proof: Water resistant Eye relief ...