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The versatile Celestron 8-24mm Zoom Eyepiece is a premium, fully multi-coated 1.25" eyepiece that allows you to dial in the power you want. The 8-24 Zoom Eyepiece is easy to adjust to four different focal lengths, each providing a different magnification level—8mm, 12mm, 18mm, and 24mm. Simply grip the rubberized barrel and turn it slowly as you look through the eyepiece. Start with the lowest magnification (24mm) to locate objects quickly and center them in your telescope’s field of view. Then increase the power for an up-close look. Zoom eyepieces save you money and time by allowing you to examine objects at various magnifications without purchasing and swapping out multiple eyepieces. The folding eyecup is great for observing with or without glasses. The field of view (40 - 60°) works well for land-based viewing as well as studying the Moon, planets, and deep-sky objects.
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.
David C. Gulliver
2025-08-24 13:56:45
I purchased this in April 2011-after the March Supermoon and it quickly became my primary eyepiece! AFOV is wider than my standard MA (Modified Achromat) eyepieces and the wide exit pupil allows for an easier stance over whatever telescope I am using at the time of viewing. I will admit that while adjusting the zoom the view would often show some distrortion, but, in the beginning, I was able to spin the zoom function back and it would self correct. Over time, that 'self-correction' stopped unless at either stop (8mm or 24mm focal length).Problems:1) See above for distrortion issues. (Mine may have passed QC by mistake).2) Weight. Small, beginner scopes are impacted severely. Most impacted are refractors, as they 'balance' on the mount.3) No clicks during focal length. Must turn on light to see where length is.4) Overall EP assembly gets loose. I needed to tighten the chrome sleeve to the body of the assembly every time I used it.5) Mine cracked during use on a cold night? The focus changed and the view went distorted. No visible broken glass, but, something went loose (I can hear it when I shake the EP!) With these things noted, I must say that while it worked- it worked great. I'm not sure if all of the glass was mutli-coated because I did get quite visible reflections- but, the view was clear with a nice big exit pupil. So large in fact, I was able to use a high quality, multi-coated (multi lens) 3x achromatic Barlow lens with it- creating very crisp lunar views under exceptional seeing conditions. However, that only worked on my largest GOTO scopes: a 90mm refractor & 114mm reflector-both of which needed to be balanced with all of that weight mounted. Anything smaller was at risk of toppling over and could not be locked down hard enough to bear the excessive load. So, if you have a smaller manual refractor, say 60mm, 70mm or 80mm or even a smaller manual reflector- make sure that your mount will bear the load and that you can acheive balance prior to buying one of these. Otherwise, you'll be very frustrated! I strongly recommend this EP to someone who has limited funds for buying a variety of high quality lenses. If purchased with a very high quality 2x Barlow, it will cover many lenses that can be purchased separately. I think mine passed QC in error, or was dropped during shipping because my distrortion issues & constant need of tightening haven't been mentioned by other reviewers. Also, I cannot imagine that mine would 'crack' during use, unless something was already defective. Now, I'm hoping that Celestron will repair or replace mine (it's still under warranty), but, I don't want my issues to prevent someone from seeing the value in this pretty high qaulity eyepiece. The glass is very clear, the exit pupil is very forgiving and the views can be tremendous!Clear skies to all!Dave
Scott L Quashen
2025-08-07 10:42:07
Yeah the clarity is great, zoom range is huge, clarity excellent. Image quality and details are excellent. This is a high value piece , 100% recommend . It’s the only eye piece that i use. Find the object , than zoom on it and track it before the planet spins on you ;-)
BP
2025-07-22 13:10:03
Couldn't be happier.Good quality,saves time,space and money if you are just starting out in astronomy and telescopes and are looking for an all in one eyepiece and not ready to spend ALOT of money buying multiple different eyepieces and having to change them out and carry them around then,this is a great starting point that will get you going easily and for much less cost. Image is clear and sharp.Easy to zoom in and out and good eye relief.As a noob myself,I can say this really has made my viewing sessions alot better and less of a hassle.
Daryl Wayne
2025-06-02 12:53:50
Please note the following remarks are based on lens use with an f/10 SCT, Celestron 5" Omni. I received this and immediately inspected it. Nice coating and during use seems to be essentially glare-free. Not exactly parfocal but requires only minimal refocus post-zooming. Field of view (FOV) is less than listed in product description, so even at mid-magnification one will only see Jupiter and its four primariy moons within the FOV, at least in this scope focal length. Of course, with the f/4's and f/5's, you would obtain much wider FOV's. Higher magnifications, as with any lens, loses defining ability but nothing that is beyond individual lenses of the same powers. In fact, in comparison at 9mm through 15mm, I found this zoom apparatus to be better than another well known company's plossls. Recommended? Yes! Functions well for stars, for higher emission nebula (Orion), a brighter galaxy (Andromeda), and the gas giants. But open clusters such as the pleids, those in Auriga, and the Beehive in an f/10 extend beyond the FOV even at 24mm focal length and require minor scanning. For terriestrial viewing, this is an absolutely excellent lens system and the zoom is a joy to use with minimal loss of defining ability beyond ~22mm. Still, this will match and even outperform other zoom systems costing up to $150.00. Last point: at low night temp's., turning the zoom is a necessarily slow process so one won't skew the scope off-track. Nonetheless, unless you are a perfectionist/purist, you will not be disappointed. Good Viewing and Clear Skies!
Anton
2025-05-23 17:44:45
just amazing product. Lenses are clear, quality of picture is next to the perfect. 'Zoom' works great too.extra star( 6th one ) for packing. hard plastic and tight cap are amazing for transporting eyepieces without worryingjust great eyepiece, thanks.
NMBIRDER1964
2025-05-11 13:27:18
This is a very good eyepiece for viewing multiple types of objects. The zoom is smooth and requires minimal refocusing when changing powers. Objects appeared very sharp and clear. This will be my primary eyepiece for most viewing.
Dennis R Price
2025-03-03 12:16:27
Very nice to go from wider to zoomed in view without swapping eyepieces. Good price. Don’t see any distortion overall but its not a plossi so edges are typical of non plossi eyepiece.
Customer
2025-02-23 11:18:39
This is the best eyepiece ever. Super easy to zoom in and view the moon and planets…although it only goes to a max of 8mm zoom. Much better than any other eyepiece that I have. If you have a telescope…go for it!
Graham
2025-02-19 17:34:19
Save trying to find eyepieces in the dark at the scope. Very useful and looks well made. Nice views at all magnifications. Would recommend as the minimum for the amateur astronomer that does not want to spend a lot of money.
Will
2025-02-16 20:32:49
Great eyepiece to have when you feel like 'surfing the sky'. The 24 mm focal length is nice in viewing the 'bigger picture'. Not quite the 'wide angle' view of my 40 mm plossl, but definitely effective for viewing smaller star clusters. Being able to 'infinitely adjust' the focal length down to 8 mm is considerably easier than changing oculars and having to re-focus, making sure the object being viewed was solidly in the middle of the field of view before zooming in, of course. Images were sharp at the high magnification as well, something I was pleasingly surprised to find. Wish my zoom microscope was as effective.It's a great eyepiece for casual sky viewing with a Newtonian scope; the 'only lens you need' for the most part. The almost-par zoom capability meant little re-focusing adjustment between low (24 mm) and high (8 mm) magnification, so I could quickly explore objects of interest without a lot of need for adjustment. Worked well with the 2X Barlow lens as well, although the light reduction at that magnification with dim objects was very noticeable.Zoom action is a bit stiff; my hope is it's just a built-in 'tightness' as opposed to a lubricant which may become stiffer with winter temperatures. There were no 'click stops' for separate focal lengths, just markings on the outer barrel . . . which isn't a big deal, just an observation. Zooming was always smooth but tight. Solid mechanical arrangement.As is typical for zoom lenses the effective aperture decrease at the higher magnification (8 mm) results in a noticeable dimmng. It was necessary to increase the focal length a bit to be able to still discern a dim spiral nebula in deep space. Viewing the moon was a delight, however, as that is normally so bright a neutral density or double-polarizing filter is necessary to reduce the intensity. Images remained sharp at all focal lengths.Great addition to my accessories . . . but too long to fit into the space I have left in my larger accessories kit. However, don't usually take that with me unless I'm planning a long observation session.
Nicholas
2025-01-21 17:52:49
Prodotto davvero ottimo, consiglio
Alan Neri
2025-01-08 09:59:40
Excelente Ocular muy practico sin tener que cambiar oculares, los materiales con de calidad y la imagen es espectacular, vale el precio.
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