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Celestron 93230 8 to 24mm 1.25 Zoom Eyepiece

4.4 out of 5 stars 233 customer reviews
| 38 answered questions

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  • Super-premium 1.25-inch zoom eyepiece
  • Focal length of 8 to 24 millimeters
  • Allows for expanded magnification options
  • 40 to 60 degree field of view, 15 to 18 millimeter eye relief
  • Fully multicoated optics
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Frequently Bought Together

  • Celestron 93230 8 to 24mm 1.25 Zoom Eyepiece
  • +
  • Celestron 93428 X-Cel LX 1.25-Inch 3x Barlow Lens (Black)
  • +
  • Celestron 18778 AC Adapter (Black)
Total price: $160.05
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Technical Details


Product Description

Product Description

Super-premium 1.25-inch zoom eyepiece Focal length of 8 to 24 millimeters Allows for expanded magnification options 40 to 60 degree field of view, 15 to 18 millimeter eye relief Fully multicoated optics

Amazon.com

The Celestron 93230 8 to 24 millimeters 1.25 inch zoom eyepiece allows you to zoom instantly with your scope from 8x magnification to 24x magnification.

Product Information

Product Dimensions 4 x 1 x 1 inches
Item Weight 4.8 ounces
Shipping Weight 12.8 ounces (View shipping rates and policies)
ASIN B0007UQNV8
Item model number 93230
Customer Reviews
4.4 out of 5 stars 233 customer reviews

4.4 out of 5 stars
Best Sellers Rank #3 in Camera & Photo > Camera & Photo Accessories > Telescope & Microscope Accessories > Telescope Accessories > Eyepieces
#110 in Camera & Photo > Binoculars & Scopes
Date first available at Amazon.com February 18, 2005

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Customer Reviews

Top Customer Reviews

By J. S Thomas on August 15, 2008
Verified Purchase
Ive been into astronomy for 20 years and have probably 18 eyepieces ranging from 3mm to 40mm, plus a 3x barlow lens. One of the frustrating things in astronomy is fumbling around in the dark looking for that higher/lower magnification eyepiece... and can be costly if dropped. The Celestron Zoom Focus has eliminated all that digging around in the dark for me and has bascially replaced almost all my eyepieces from 24mm and lower.

Now I can just instantly lower or raise the magnification with very little re-focusing and also works great with a 3x barlow lens. I was very impressed with the quality, clarity and detailed views given with this eyepiece. The field of view although was slightly less than my other eyepieces it was not really noticeable and everything I viewed fit in the field of view. I have been using this eyepiece with my Meade Lx200 8 inch scope and Meade ETX-125 5 inch scope with outstanding results. Very smooth motion to transition from the different magnifications.

If you are new or an old timer in astronomy this eyepiece is a must. For the newcomer it can save alot of $$$$ spent on many different eyepieces with leaving only the need for the wide field 30-40MM+ eyepieces. For those that have many eyepieces in their case this is a great addition giving you easy trasition to different magnifications. I dont think its a total replacement to the much higher end fixed eyepieces..but to the casual observer like myself this is almost all I need. I wish i had purchased one of these many years ago, absolutely the BEST money ive spent on an astronomical accessory to date....a must buy.
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I was a bit leery of buying a "zoom" eyepiece and suspected that the movement within the lens assembly would greatly effect the optics. I took a chance because I wanted a quick and dirty spotting eyepiece that would give me a sneak peak at objects before I bothered switching eyepieces. I have now tried this eyepiece on my Celestron 130SLT and compared it side by side with a set of comparable fixed Celestron Omni Possls, which should be of comparable quality. I was very pleasantly surprised, as I saw very little visible difference when viewing Mars and Saturn. I had expected the zoom to cause significant distortion outside the center of the viewfield, and to give substantially less sharp views. However, I found the views very nearly the same. I also tried the zoom over my Celestron Ultima barlow with good results. Some minor refocusing was required with any significant change in zoom, but this was not unexpected. That said, there was a difference between the zoom and fixed lens eyepieces. I did see some differences at higher magnifications, particularly with the barlow. As such, I don't think a zoom lens is a replacement for a range of fixed eyepieces, particularly if you're doing photography or viewing deep sky objects. However, this zoom exceeded my expectations and will probably become my main eyepiece for locating and previewing objects. I should note that the barrel of this eyepiece is a few mm wider than other 1.25" Celestron eyepieces and barlows. It still fits nicely and functions well. It just looks a bit bulky when mounted over a narrower barlow.
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Verified Purchase
Great replacement for the eyepiece - affordable, lot of bang for the buck. I'm using this with a Celestron Nexstar 6SE

If you're reading this review and trying to decide on this eyepiece then, you're probably, like me, a bit of a newbie in learning about this, so here's what my experience was like with this. The telescope tube (optical tube assembly, or OTA) collects light from the sky and creates an image that you can explore with the eyepiece. The magnification of what you're seeing in the sky is easy to calculate by taking OTA length / eyepiece length.

My 6SE (1500mm focal length) came with a standard 25mm eyepiece, so 1500/25mm = 60x magnification. This zoom eyepiece starts at 24mm, which is nearly identical magnification (62x) and zooms to 8mm, or 187x (3x greater magnification). But you're just doing an optical enlargement of a section of the image that was created by the OTA, so the image you'll then observe *is* larger, but it will also appear a lot darker, you'll start to quickly realize that you don't have suitable optics to easily focus and get a nice crisp image, and I find I start to notice the slight vibration that I introduce to the telescope when my head touches the eyepiece.

I sometimes use this zoom eyepiece with the similarly priced Celestron Barlow extender and I like that combination and am able to explore more, but it's just thinking through what this can and can't do. I've included two pictures simply taken with my phone peeping through the eyepiece looking at Jupiter at 24mm (zoomed out) and 8mm (zoomed in) to give a sense of the magnification. This doesn't give any sense of the image quality or crispness.
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The Celestron 8-24mm zoom EP was included with a used Celestron Nexstar MCT I recently acquired. This past weekend I was able to evaluate the Celestron against a Televue and an older Vixen zoom. The Televue and Vixen zoom EPs are much more expensive and performed better than the Celestron. The owner of the Televue agreed that it and the Vixen showed almost equal performance. That does not make the Celestron a poor choice. It is a good EP for the price and might well be the best choice for many buyers.

We used a Celestron C5 on a Nexstar 8 SE mount. These days Celestron sells the C5 as a spotter and many buyers get a zoom EP for that use. However, the C5 has a long history as an astrnomical scope, the two versions are identical optically and many regard it as an excellent scope for either use.

We compared the zoom EPs under clear skies, with light surface winds but very stable seeing otherwise. Our viewing location was borderline yellow-brown zone, north of the Reno NV light dome. Badly aimed lights on a distant athletic field prevented full dark adaptation. In other words, conditions were much like you might find in many suburbs. The seeing good enough that, while not part of the test, we were able to push the C5 to high magnification (>300x at 4mm) with a another TV zoom.

We selected Saturn as the primary target, because it is bright enough to cause problems with internal reflections or glow in some EPs, it has some challenging features and in good seeing allows the use of high magnification.

At 24mm, all three EPs showed good crisp images, with the Vixen and Celestron having a similar field of view (FOV). At 8mm, the differences were obvious. In the Celestron, a glow around Saturn that obscured both background stars and some of its moons.
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