Askar 91F - 91mm f/6.7 Quadruplet Flat-Field APO Refractor - 91F Cables Light Gathering Power (Compared to

Light Gathering Power (Compared to human eye):  51x

A hinge on the optical mount lets you swing it forward and back

Go from a 1

moisture and dust makes the scope amazingly rugged

or the quality that lives in each Explore Scientific 68 Degree Series Waterproof Telescope Eyepiece

Askar 91F - 91mm f/6.7 Quadruplet Flat-Field APO Refractor - 91F Cables Light Gathering Power (Compared toAskar 91 mm Quad ED APO Flat Field Refractor Askar 71F Flat Field Quad Refractor Highlights The Askar 91F adopts a quadruplet air spaced APO lens design, including one piece of ED glass, which can effectively reduce chromatic aberration. The Askar 91F supports 44mm full frame imaging with great performance of the surrounding star points. The Askar 91F is a self flattened design that allows users to avoid calculating the back focus and buying