Use both eyes to see through your telescope.  Includes a set of matching 22mm wide-angle eyepieces.

This well-constructed binoviewer may have once been a Zeiss binocular microscope eyepiece that was converted to work with telescopes. It has both a Celestron and a Baader Planetarium logos on it, and was made in Wetzlar West-Germany. It weighs 855g and the IPD adjusts from 53 to 76mm. It has a lockable rotator for the 1.25″ eyepiece tube and uses prisms.