Celestron 18mm X-Cel LX Series 1.25"


Availability: In stock

This medium focal length 18mm Celestron X-Cel LX Series six-element eyepiece is usable for high quality medium power magnification with any scope type, under virtually any seeing conditions - from fair to superb . . .
Our Product #: CXLX18
Celestron Product #: 93425

Product Description

This Celestron X-Cel LX 18mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. This medium focal length Celestron X-Cel LX is usable with any scope type, under virtually any seeing conditions - from fair to superb.

It can also be used for imaging through your scope with a smart phone. Click on the "Recommended Accessories" tab above to find the adapter you need.

An f/4.5 Dobsonian will yield a 4mm exit pupil, putting it into the rich field observing range.

With short focal length refractors, it's a low power, very wide field eyepiece. With the 430mm focal length Astro-Tech AT72ED, for example, it gives you 24x and a 2.5° field that is five times as wide as the full Moon. This is well suited for observing open clusters such as the Pleiades and large nebulas such as the Lagoon. Both will fit nicely into its field when used with the Astro-Tech AT72ED, with a framework of black sky around the objects to set them off.

This Celestron is also quite good for medium magnification observing with long focal length refractors, reflectors, or catadioptric scopes. On a 7" Maksutov, for example, it yields 148x and a 0.41° field. This is an excellent magnification for close-up lunar observing, where the Moon will more than fill the eyepiece field at this magnification, particularly when the high contrast of the eyepiece is combined with the high contrast of the Maksutov.

Its full multicoatings provide high contrast that makes it a good choice for resolving detail in planets and planetary nebulas, while its edge-to-edge sharpness makes it well-suited for lunar, planetary, and globular cluster observing with an SCT. (Some of the larger globulars, such as M13, will nearly fill its 0.54° field with such a scope, but will still show a nice framework of black sky around the object.

It has a twist-up rubber eyecup and a usable eye relief of 16mm, for virtually unvignetted use with eyeglasses. A no-slip rubber grip ring provides a secure and comfortable grip when handling or changing eyepieces in cold weather. It is parfocal with the other X-Cel LX models so it will require little refocusing when changing between focal lengths.

The Celestron X-Cel LX 18mm comes with dust caps for both ends of the eyepiece and a bolt-type plastic storage case.

Tech Details

Barrel Size 1.25"
Eye Relief 16mm
Field of view 60
Focal Length 18mm
Number of optical elements 6
Weight 7.2 oz.
Warranty 1 year


Review by:
I actually have three of the X-Cell eyepiece series - 18mm, 7mm and a 5mm - and they are very much superior to the eyepieces that came with my 'scope. I have three 'scopes and I use these in all three 'scopes giving me improved images that are clean and crisp...and the three are par focal as are all the X-Cell eyepieces.
I also have an X-Cell 2x barlow - also good quality for the price.
I have some zoom eyepieces I use with crowds, but these are MY go-to eyepieces when I'M looking at the night sky with my CPC 9.25 Edge HD or looking at the Sun with my solar 'scope.
Just great products and good value - Thanks Celestron and Astronomics! (Posted on 10/31/2019)
Review by:
This is by far my most used eyepiece. Clear, crisp and wide. Extremely better than the stock eyepieces my scopes came with. Works great with a 2x barlow. (Posted on 9/13/2019)
Review by:
Just getting into the astronomy hobby I purchased an older Celestron C8 which had the original eye pieces. I wanted something better, and found very quickly that the quality and prices on eyepieces could be staggering. I was not ready to spend $300 for a single eyepiece but I wanted something much better than the factory supplied eyepieces I had for my scope. I settled on the X-Cel 18mm as it seemed to offer quality, good reviews and a mid-level price. I was also thinking down the road that if I found I liked this hobby enough to stay with it, I would be purchasing a new scope and I wanted eyepieces that I would be happy with that could be used in that future telescope. The improvement in my visual viewing was beyond my expectations. These eyepieces are excellent in quality, offer very good contract and sharpness and are very affordable. I now have four of these X-cel eyepieces, an 18mm, 12mm, 9mm and a 5mm. I am now ready after a year in the hobby to begin seriously looking at a move up scope from my 35 year old C8. These eyepieces have been and are really great value and of outstanding quality. They have made a very big difference in my interest in the hobby and have helped get me hooked. (Posted on 8/26/2019)
Review by:
I have a couple of the Xcel-LX eyepieces and I find them to be a fantastic product for the price I paid for them! (Posted on 7/24/2019)
Review by:
Excellent contrast, crisp images. It worked wonders with a very cheap apochromat that I had. I also use it with my Omni 150 reflector and I have no words to describe the great views and details I can enjoy every time I use this eyepiece. It is a great value for your money. (Posted on 11/11/2018)
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