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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Celestron X-Cel LX 5 mm - 1.25"
Celestron X-Cel LX 5 mm - 1.25"

Celestron X-Cel LX 5 mm - 1.25"

by Celestron
SKU CEL-93421
$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95
Price Match Policy!
  • 5mm Focal Length for High-Magnification Views
  • 60° Apparent Field of View
  • 6-Element Fully Multi-Coated Optics
  • Extended 28mm Eye Relief
  • Parfocal with all X-Cel LX Eyepieces
  • Standard 1.25" Barrel with Filter Threads
3 in stock
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  • Celestron X-Cel LX 5mm Eyepiece - 1.25"

    The Celestron X-Cel LX 5mm Eyepiece delivers high-power views ideal for planetary and lunar observation, framing targets in a wide 60° apparent field of view. Its 6-element optical design provides sharp, high-contrast images, while the generous 28mm of eye relief ensures comfortable viewing for all observers, including those who wear glasses.

    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.

  • How does the X-Cel LX 5mm perform on Jupiter with an 8" f/10 SCT?

    In an 8" f/10 Schmidt-Cassegrain Telescope, the X-Cel LX 5mm eyepiece yields a high magnification of 406x. This is an ideal power for resolving fine details in Jupiter's cloud belts, observing the Great Red Spot, and tracking transits of its moons, provided the atmospheric seeing is stable.

    Is the X-Cel LX 5mm good for splitting tight double stars?

    Yes, the high magnification and sharp optics make it an excellent choice for challenging double stars. On a night of good seeing, it can help separate close pairs like Izar (Epsilon Boötis) or resolve the individual components of the "Double Double," Epsilon Lyrae, into clean, distinct points of light.

    What is the main benefit of the 28mm eye relief on the X-Cel LX 5mm?

    The primary benefit of the long 28mm eye relief is comfort, especially for individuals who wear eyeglasses to correct for astigmatism. It allows you to see the entire 60° field of view without having to remove your glasses, which is impossible with the short eye relief of most high-power eyepieces.

    What does it mean that the X-Cel LX eyepieces are "parfocal"?

    Being parfocal means that all eyepieces in the Celestron X-Cel LX series reach focus at approximately the same point. This allows you to switch from one X-Cel LX eyepiece to another (e.g., from the 25mm to the 5mm) and only require minimal, if any, refocusing. This is a significant convenience during an observing session.

    Can I use filters with the X-Cel LX 5mm eyepiece?

    Yes. The 1.25" barrel of the X-Cel LX 5mm is threaded to accept standard 1.25" astronomical filters. This is useful for adding planetary filters to enhance contrast on Mars or Jupiter, or a neutral density filter to reduce the glare of the Moon.

    How does the 60° field of view on the X-Cel LX 5mm help with observing?

    The 60° apparent field of view provides a wider viewing window compared to the 50-52° of a standard Plössl. At high power, this means an object will take longer to drift across the field of view in a non-tracking telescope, giving you more time to observe before needing to reposition the scope.

  • Focal Length 5mm (0.2")
    Apparent Field of View 60°
    Barrel Size 1.25" (32mm)
    Eye Relief 28mm (1.10")
    Optical Design 6 elements in 4 groups
    Optical Coatings Fully Multi-Coated
    Field Stop Diameter 5.1mm (0.20")
    Parfocal Yes, with X-Cel LX series
    Filter Threads Accepts standard 1.25" filters
    Eye Guard Pop-up, adjustable
    Body Material Anodized Aluminum
    Dimensions 95mm x 48mm x 48mm (3.74" x 1.89" x 1.89")
    Weight 6.5 oz (184 g)

    • Celestron X-Cel LX 5mm Eyepiece

      × 1

    • 1.25" Barrel Dust Cap

      × 1

    • Eyepiece Dust Cap

      × 1

  • Celestron 2-Year Limited Warranty