Orion E-Series 7-21mm Zoom Eyepiece
- The Orion E-Series Zoom eyepiece allows you to change magnification power without swapping out eyepieces.
- A simple twist of the zoom eyepiece housing changes the focal length from 21mm to 7mm, providing a variety of viewing magnification powers.
- The eyepiece consists of six lens elements, which are fully multi-coated with anti-reflection coatings for bright and clear views, rich in contrast.
- Exceptionally long 18mm-16.3mm eye relief range allows eyeglass wearers to enjoy the entire field of view without needing to remove their glasses..
- The 1.25" barrel is threaded for use with like-sized Orion eyepiece filters..