This is an improved version of the popular F50 finderscope. This new version is black in color and has a rotating back (requires some finder re-alignment after rotation). It comes with our standard 50 degree 23mm fully multicoated crosshair eyepiece. This eyepiece has a focusing crosshair reticle and may be used with an illuminator like the Rigel Pulse Guide illuminators available below. Includes our high resolution 50mm optical system, helical 1.25" focuser with rubber grip and fully multicoated correct image erecting prism. The finderscope weighs only 19 ounces and works with our standard 50mm ring systems.