For years zoom eyepieces were regarded as “convenient,” but without the optical resolution required in demanding astronomical applications. The Meade Series 4000 Zoom Eyepiece has changed that impression — completely and forever.

This high performance, high-contrast, high power eyepiece is ready to take its place among the best planetary eyepieces available... but with a "Nagler" twist. Al incorporated his proven "Nagler" concept into a zoom, while optimizing for the performance factors critical to planetary observers; contrast, resolution, and comfortable eye relief.