The Meade Series 4000 Zoom Eyepiece is perfect for advanced amateur astronomers who are unwilling to compromise on optical performance. This powerhouse produces a resolution that is fully consistent with today's finest fixed focal length eyepieces while providing the convenience and variability of a zoom eyepiece.

The Meade Series 4000 Zoom is a perfect accessory for telescopes of all types, brands and price levels – whether 60mm refractor, 8" Dobsonian, ETX-90 or 12" LX200 Schmidt-Cassegrain. Its seven-element system provides an apparent field of 40 at the 24mm setting, increasing continuously to a 55 field at 8mm. The internal zoom optics move on smooth, precisely machined surfaces allowing the viewer to maintain optical collimation at all zoom settings. A scale graduated in 1mm increments indicates the zoom focal length in operation. All internal lenses are multi-coated for maximum light transmission and image contrast, and the chromed brass barrel is threaded for filters. Includes foldable rubber eyecup that allows eyeglass wearers to capture the entire field of view.