Dismiss Notice
New Cookie Policy
On May 24, 2018, we published revised versions of our Terms and Rules and Cookie Policy. Your use of AstronomyConnect.com’s services is subject to these revised terms.

More Views

Celestron 1.25" X-Cel Eyepiece - 2.3mm

4.0 (1 Reviews) Read Reviews Write Review
Brand Celestron
Part Number 93386
Availability

Product Info

Manufacturer Description

This high power X-Cel eyepiece is a 6-element fully multi-coated optical design, the X-Cel utilizes extra low dispersion (ED) glass on its most highly curved surfaces, to minimize chromatic aberration that can hinder sharp planetary views. With a wide 55° apparent field of view, and a large 25mm clear aperture the X-Cel is one of the most comfortable eyepieces to use.

Every X-Cel eyepiece is parfocal with each other, meaning little or no focusing is needed when changing from low to high power. The X-Cel comes with soft rubber eyecups and a durable plastic case. In addition, if you are an eyeglass wearer, you will enjoy the 20mm eye relief available on each of the X-Cel focal lengths.

Threaded barrels accept 1-1/4" thread-in filters.

Please note: Depending on your telescope, this eyepiece may provide magnifications that are too high! While it can be very useful for viewing the Sun, Moon, brighter planets and terrestrial objects, it is not for everyone or for common viewing conditions.

Before buying, please make sure that you are using realistic magnifications with your telescope. A good rule of thumb is that under very good conditions and with a very good telescope, the maximum power you will be able to use is about 50x of magnification per inch of telescope aperture. With average telescopes and/or average conditions, you might be limited to 30x of magnification per inch of telescope aperture. So for example, if you have a 6" telescope, under typical conditions you might typically use 6x30 = 180x of magnification, and 6x50 = 300x of magnification at best. If your telescope has a focal length of, say, 1000mm, then this eyepiece will result in a magnification of 1000 / 2.3 = 435x which is too much for this telescope.

Also, when you magnify an object, its light is spread over a larger area. Since the brightness of the object being viewed hasn't changed, this means that the image you see will be fainter. Double the magnification and the image will get 4 times fainter. This is a basic law of physics, but people often forget this and complain that the "image is not bright enough" when they increase the magnification to very high powers.

Boosting the magnification beyond the recommended maximum for your telescope aperture is not realistic. This is bound to result in image break-down, causing faint, fuzzy images, focusing difficulties, increased color around objects and general disappointment. Use the eyepiece in the right settings and with the correct expectations, and you will enjoy it.

Reviews

4.0 (Based on 1 Reviews) 100% of reviewers recommended this product.
Rating Distribution
Sort by
  • Date
  • Rating
  • Useful
    1. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by litebkt of Mariposa, CA.
      1294358400
      Jan 6, 2011

      4.0 It's pretty much the only choice.

      Pros:

      Strong Construction,Compact

      Cons:

      Comments:

      This is pretty much the only choice for reticle eyepieces and for finder scopes. And it is only available here. I did purchase another brand a while back that had a flashing feature but it was big, bulky, and broke after first use.

      It would be nice for these things to turn off automatically after a few hours of non use. I just can't seem to remember to turn them off and I'm always replacing batteries.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    Sort by
    • Date
    • Rating
    • Useful

      Specifications

      Apparent Field of View 55°
      Barrel Size 1.25" (31.7mm)
      Bolt Case Included Yes - Manufacturer Supplied
      Bolt Case Size -
      Coatings Fully Multi-Coated
      Eye Lens Diameter 25mm
      Eye Relief by Design 20mm (0.79")
      Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
      Focal Length 2.30mm
      Lens Elements 6
      Parfocal Yes
      Rubber Eye Guard Yes
      Manufacturer Celestron
      Eyepiece Focal Length 5mm and Under
      Eyepiece Field of View 51 - 60 degrees
      Eyepiece Series Celestron X-Cel
      Barrel Type With safety undercut