Celestron X-Cel LX 5 mm - 1.25"

High-Power Planetary Views: The 5mm Focal Length and 60° Field

With its 5mm focal length, this eyepiece is built to push the magnification of your telescope for detailed views of celestial targets. It excels at resolving fine details like the Cassini Division in Saturn's rings, cloud bands on Jupiter, and the polar caps of Mars. The 60° apparent field of view provides a more immersive window than a standard Plössl, giving planets and small deep-sky objects room to float in a dark background.

The high magnification this eyepiece produces is best utilized under steady atmospheric conditions. On nights of good "seeing," the 5mm X-Cel LX will reveal subtle features that are simply invisible at lower powers.

A 6-Element Design with Fully Multi-Coated Optics

The X-Cel LX's optical system uses a 6-element, 4-group design to maintain sharp views and control aberrations across its 60° field. Every air-to-glass surface is treated with high-transmission multi-coatings to maximize light throughput, resulting in brighter images. To further improve contrast, the edges of the lenses are blackened to prevent stray internal reflections from washing out faint details.

User-Focused Ergonomics: 28mm Eye Relief and Field-Ready Construction

A standout feature of the 5mm X-Cel LX is its remarkable 28mm of eye relief, a significant amount for a high-power eyepiece. This long eye relief allows eyeglass wearers to see the entire 60° field of view without removing their glasses. The pop-up rubber eyeguard can be extended for non-eyeglass wearers or retracted for those who need to get closer.

• Parfocal Design: The X-Cel LX series is parfocal, meaning you can swap between different focal lengths in the series with little to no refocusing required, saving valuable time at the telescope.
• Secure Grip: The machined aluminum body features a threaded rubber grip that ensures secure handling, even with gloves on or in dewy conditions.
• Filter Ready: The 1.25" barrel is threaded to accept standard astronomy filters, allowing you to enhance views with planetary color filters or a moon filter.

X-Cel LX 5mm vs. Standard Plössls: A Wider View with More Comfort

Compared to a traditional 5mm Plössl eyepiece, the Celestron X-Cel LX 5mm offers two major upgrades for the observer.

• Wider Apparent Field: The 60° apparent field of view of the X-Cel LX feels noticeably more expansive than the typical 50-52° field of a Plössl. This makes it easier to track objects in a non-driven telescope and provides a more engaging, "spacewalk" viewing experience.
• Superior Eye Relief: A standard 5mm Plössl has very tight eye relief, often just a few millimeters, forcing you to press your eye right up to the lens. The X-Cel LX's massive 28mm of eye relief is a significant improvement in comfort, especially during long planetary observing sessions.