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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 2.3 mm - 1.25"
Celestron X-Cel LX 2.3 mm - 1.25"

Celestron X-Cel LX 2.3 mm - 1.25"

by Celestron
SKU CEL-93420
$109.95 - $109.95
$109.95
$109.95 - $109.95
$109.95
Price Match Policy!
  • 2.3mm focal length for maximum planetary magnification
  • 60° apparent field of view frames celestial targets
  • 6-element fully multi-coated optical design
  • Long 24mm eye relief for comfortable viewing with or without glasses
  • Parfocal with all X-Cel LX series eyepieces
  • Standard 1.25" barrel with filter threads
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron X-Cel LX 2.3mm Eyepiece - 1.25"

    The Celestron X-Cel LX 2.3mm Eyepiece delivers extreme magnification from a 1.25" barrel, pushing telescopes to their optical limits for planetary and double-star observation. Its 6-element optical design maintains a wide 60° apparent field of view, while the generous 24mm of eye relief ensures comfort during detailed study. This 7oz eyepiece is parfocal with the entire X-Cel LX line, allowing you to swap between magnifications with minimal refocusing.

    High-Magnification Planetary Viewing: The 2.3mm Focal Length Advantage

    With a 2.3mm focal length, this eyepiece is engineered for one primary purpose: producing the highest practical magnification your telescope and atmospheric conditions will allow. It is an ideal choice for resolving fine details that are invisible at lower powers, such as the Cassini Division in Saturn's rings, subtle cloud bands on Jupiter, or splitting tight double stars. The trade-off for this power is a very small exit pupil, making it best suited for nights of steady seeing and telescopes with excellent optical quality.

    6-Element Optics: A 60° Field with High-Contrast Views

    The X-Cel LX 2.3mm uses a 6-element, 4-group optical system to deliver its 60° apparent field of view, which feels significantly more immersive than a standard Plössl. Every air-to-glass surface is fully multi-coated to maximize light transmission and reduce internal reflections. The lens edges are blackened to further improve contrast, ensuring a dark background sky that makes faint planetary details stand out.

    Field-Ready Ergonomics: 24mm Eye Relief and Secure Handling

    Unlike many high-power eyepieces that require you to press your eye against the lens, the X-Cel LX 2.3mm features an impressive 24mm of eye relief. This makes it comfortable for all observers, including those who wear eyeglasses. The pop-up eyeguard adjusts to the perfect height, and a threaded rubber grip on the black-anodized aluminum body provides a secure hold, even when wearing gloves on a cold night.

  • What is the primary use for the Celestron X-Cel LX 2.3mm eyepiece?

    The X-Cel LX 2.3mm is a specialist eyepiece for high-magnification planetary, lunar, and double-star observing. It's designed to push your telescope to its maximum useful power on nights of good atmospheric stability to see the finest possible details.

    How do I know if my telescope can handle the X-Cel LX 2.3mm?

    A general rule is that the maximum useful magnification is about 50x to 60x per inch of aperture. For an 8" (203mm) telescope, the maximum is around 400-480x. In an 8" f/10 SCT with a 2032mm focal length, the 2.3mm eyepiece yields 883x, which is far too high. This eyepiece is better suited for shorter focal length instruments like f/5 reflectors or f/6 refractors where it will produce more manageable magnifications.

    Will the Celestron X-Cel LX 2.3mm work for deep-sky objects?

    While it can be used to study the cores of bright globular clusters like M13 or resolve details in small planetary nebulae like the Cat's Eye Nebula (NGC 6543), it is generally not recommended for deep-sky. The extremely high magnification and resulting dim image make it difficult to see faint, extended objects like galaxies and most nebulae.

    What does "parfocal" mean for the X-Cel LX 2.3mm?

    Being parfocal means the X-Cel LX 2.3mm will remain in focus (or very close to it) when you switch it with any other eyepiece in the Celestron X-Cel LX series. This is a significant convenience, as it eliminates the need for major refocusing when changing magnification, saving you valuable observing time.

    Is the 24mm eye relief on the X-Cel LX 2.3mm good for eyeglass wearers?

    Yes, the 24mm eye relief is exceptionally long and very comfortable for eyeglass wearers. You can leave your glasses on and still see the full 60° field of view. The pop-up eyeguard can be retracted to create a flat surface for your glasses to rest against.

    Can I use filters with the Celestron X-Cel LX 2.3mm?

    Yes, the 1.25" barrel is threaded to accept standard 1.25" astronomy filters. This is useful for adding a Moon filter to reduce glare or color filters to enhance specific features on planets like Mars or Jupiter.

  • Focal Length 2.3mm (0.09")
    Barrel Size 1.25" (32mm)
    Apparent Field of View 60°
    Optical Design 6-element Erfle
    Lens Elements / Groups 6 / 4
    Optical Coatings Fully Multi-Coated
    Eye Relief 24mm (0.94")
    Parfocal Yes, with X-Cel LX series
    Field Stop Diameter 2.4mm (0.09")
    Filter Threads 1.25"
    Eye Guard Yes - Pop up
    Body Material Aluminum
    Waterproof No
    Dimensions 120mm x 48mm x 48mm (4.72" x 1.89" x 1.89")
    Weight 7oz (198g)
    • Celestron X-Cel LX 2.3mm Eyepiece

      X-Cel LX 2.3mm Eyepiece

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    • Bottom Dust Cap

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  • Celestron 2-Year Warranty