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The Meade Series 4000 Zoom is an excellent addition to telescopes of all types, brands, and price levels, whether 60mm refractor, 8" Dobsonian, 90mm ETX, or 12" LX200 Schmidt-Cassegrain.

Conceived by one of the world's leading designers of photo-optical instruments, this 7-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 which maintain optical collimation at all zoom settings.

A scale graduated in 1mm units indicates the zoom focal length in operation. All lenses are multi-coated for maximum light transmission and image contrast, while minimizing internal reflections.

The chromed brass barrel is threaded for filters.

With its high-eyepoint optics and foldable rubber eyecup the Meade Series 4000 Zoom Eyepiece is comfortably usable by eyeglass wearers; even with eyeglasses the entire field of view is easily observable.