Other Sellers on Amazon
+ $5.10 shipping
+ Free Shipping
Celestron Omni Series 1-1/4 4MM Eyepiece
|Price:||$19.95 & FREE Shipping on orders over $49. Details|
|You Save:||$3.74 (16%)|
- Enter your model number to make sure this fits.
- This Item Includes: Lenscaps - 2-Year Warranty
- 4 Element premium symmetrical optical designs
- Fully Multi-Coated
- 52° Field of View
- Blackened lens edges
Frequently Bought Together
Customers Who Bought This Item Also Bought
|Package Height||1.5 x 1.9 x 2.7 inches|
|Shipping Weight||0.11 pounds|
|Style Name||Omni Eyepiece|
Top Customer Reviews
Both of them are pretty sharp but start getting slightly blurry towards the edges which is expected for eyepieces in this price range. The 32 mm has a slightly wider view than the 40mm. This might be because of the 1.25 inch format of the eyepieces which restricts wider views beyond a point. That's why it makes sense to go for 2 inch format eyepieces which have larger openings for wider field of views provided your focuser supports it. What I noticed was that the 32mm's slightly wider view was also slightly more magnified than the 40mms because shorter eyepiece focal length translates to more magnification.
I tested it in clear skies last week and the Pleiades cluster still doesn't fit into the field of view with the 32mm but it still provided bright crisp views almost to the edges. The star cluster just spills outside the field of view but note that my scopes focal length is 1000mm which is not a wide scope.
The finish and build of the eyepiece is very good and the rubber eye cap is excellent and very useful if you wear glasses like me. Even otherwise, it acts as a shield preventing stray light degrading your image. The eye relief is good as well.
The conclusion - the 32mm is a clear winner here and I don't understand why Celestron would even offer a 40mm version in 1.25 inch format. I am going to be returning the 40mm and I hope this experience helps others in making a decision if they are confused.
I own 12 EPs: Plossls, Erfles, Orthoscopics and Kellners, these X-Cel EPs are the 3 I use most often.
Some other reviewers have said that the "Cons" are "heavy" and "bulky". To me this is not a "Con". These are well constucted, solid feeling EPs that are easily handled with gloved or cold hands.
There are better EPs, but not at this price. To me, these are the most bang for the buck!
To start off with the build quality is vastly superior than that of the standard eye piece and there is a significant weight difference (X-cel the heavier). There is also a noticable size difference that Im sure has to do with whats held inside. The adjustablity is also a huge plus and it comes in its own sturdy container for storage.
But what really matters is the perfromance and all I can say here is Wow! The field of view is significantly better. The images are crisper any clearer. Color seems more vibrant and light artifact at the edges of the eye piece seemed markedly reduced. All this for what I feel is a fairly reasonable price ($59.95 sale-%79.95 normal); especially when compairing them to Televue ($200+).
Give this brand a shot you wont be disappointed.
When I have to move my scope around my yard to avoid trees and other viewing obstructions etc...(suburbs), this is one of the four eyepieces I grab and put in my jacket and take with me, the others are my orion expanse 20mm, teleview type 4 nagler 17mm and orion expanse 9mm.
For me this eyepiece seems to work well enough for me to be a litmus test on how good the atmosphere is, if I can bring an image into good quality focus in this eyepiece then I have a steady atmosphere and can then try to use other eyepieces that provide higher magnifications. I know one time I observed Jupiter over a nearby rooftop and I was able to see the heat distortion/disturbance in the air ripple across the face of Jupiter; the plus side of this being this eyepiece was able to capture that effect, the downside of this was that I was done looking at Jupiter from that location that evening.
I am thinking about getting the 9mm version of these to compare it's performance in my 6" F12 Mak to my orion 9mm. Despite my budgetary limitations and constraints this is something that I ponder. I seem to have an very little difficultly getting this 12mm into a sharp focus at 150x, so I wonder if I'd have an easier time with the celestron 9mm than my orion expanse 9mm at 200x.
This eyepiece produced an impressive 150x image of Mars Apr 20th 2014, when we had a very stable atmosphere for N. Virginia.Read more ›
Most Recent Customer Reviews
What a wonderful eyepiece.
This eyepiece is orders of magnitude better than the kit eyepiece or the Accessory Kit eyepieces. The view is much clearer and brighter. Read more
I bought this 40mm lense for use with my 127mm(5 inch) Newtonian Reflector.I wanted something that would gather as much light as possible, for viewing deep sky objects, such as... Read morePublished 15 days ago by Zachary Maughmer
This is a decent EP for the price. Views are not quite as sharp and flat as a more expensive EP, but that was expected. Read morePublished 1 month ago by Phil
It required realignment when switching between my other celestron lenses and this one. That is painful.Published 1 month ago by L. Flanigan
Better than the stock eyepiece, but not magical. I will keep searchingPublished 1 month ago by Brooklyn 3
I'm just seriously getting into amateur astronomy and made the amateur mistake of buying a telescope first. Hint; read up on the subject and join a club first. Read morePublished 1 month ago by Crazy Alice
This lens is amazing! Totally worth it! I have the Nexstar 4SE and it came with a 25mm lens. You could see a lot- ring of saturn, moons of jupiter, but everything was the size... Read morePublished 1 month ago by Riehl