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Your cart is empty. Celestron Omni series eyepieces offer a 43º apparent field of view, perfect for the Moon, planets, and a plethora of deep-sky objects. The premium four-element optical set is finished with multiple layers of high-transmission coatings for clear, sharp images. The edges of the optics are blackened for increased contrast.
The Omni eyepiece body is made of aluminum. A two-step anodizing process results in a beautiful matte finish that resists reflections and glare. Each eyepiece in the Omni Series includes a black rubber eyecup. It can be left up or folded down for better observations while wearing eyeglasses. Models with a longer barrel (15mm, 32mm, 40mm) include a rubberized grip for non-slip handling during observing sessions. The insert barrel is threaded to accept 1.25” filters.
Gerardo Perez
Reviewed in Mexico on March 25, 2025
Excelente ocular para centrar objetos, ver campos amplios de estrellas, nebulosas y la luna.
جمعة الكعبي
Reviewed in the United Arab Emirates on September 8, 2024
ممتازة
gudeste franck
Reviewed in France on August 13, 2024
M a servi à rien
Irvin S.
Reviewed in Mexico on December 18, 2024
Excelente opción para tu telescopio
Andrew
Reviewed in the United States on February 24, 2023
I bought it for nebula and star clusters visual. It works awesome for my SCT 8" , very wide field of view and perfect contrast. Most surprising thing - it works perfectly with 0.63 focal reducer and gives even brighter picture of nebulas without any signs of distortion on the edges.Definitely mast have for deep sky objects visual.
Dean Koepke
Reviewed in the United States on November 13, 2023
I bought this to go with my new Celestron 130EQ 5-inch reflector so that I could have the widest possible actual field of view. Images were bright, flat, and well focused throughout the entire visual field. However, I ended up having to return this eyepiece because the resulting 16x magnification was just under the usable magnification for this scope and I would see a blurry shadow of the secondary mirror and support if my eye got too far from the eyepiece. I bought a Newer 38mm instead...which I hope will be as good visually but not show the diagonal mirror [enough to be annoying].
Jake L.
Reviewed in the United States on April 13, 2023
First off, let me start this review by saying, for an eyepiece made in China, this thing feels very well built. It's solid in your hand, actually weighs a good bit for an eyepiece. The view is incredibly clear, and the field of view is very wide. This is great for viewing large swaths of the sky at a time, not so good for small targets like planets. This is more of a nebula/star cluster eyepiece. It is a plossl design, so there are two doublet lenses inside. It added no extra chromatic abberation, so it's perfect for reflector and Cassegrain telescopes that don't produce CA on their own. On my 102mm refractor, the views were great, but because that scope is an achromat, there was chromatic abberation, but not from the eyepiece. For under $50, I can't see why you wouldn't buy one of these if you're on a budget. Eye relief is about an inch, so you don't have to hold your eye on the glass for once.
Robby
Reviewed in the United States on September 7, 2022
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John Harper
Reviewed in the United States on June 24, 2021
Tried this eyepiece when it arrived on a Celestron C8. Good for wide field observing and is sharp out to the field edges. Unfortunately there is a blob of some chemical on the eye lens. The depth of of the lens in the mount will make cleaning a challenge and if a q-tip and alcohol doesn't remove the blemish easily, then back it goes.
Jonathon York
Reviewed in the United States on August 29, 2019
Longer focal length eyepieces often get overlooked, especially by those just getting started in amateur astronomy. Most beginner astronomy kits (Optical Tube Assembly w/finderscope, mount, eyepieces) usually include two focal lengths to get you started: a 25mm and a 10mm. My own experience tells me that anyone who wants to start a successful observing run needs to have a 40mm eyepiece to perform field narrowing from finderscope to eyepiece. a 40mm may not exactly be an "observer's eyepiece" except for the most extended objects, but it is an absolute must-have to narrow the field around a target. In fact, since I typically run several rigs at once at my college's star parties, I found that I needed to have at least two of these eyepieces. I already had a Sirius Plossl 40mm from Orion, and the Celestron Omni is an equivalent (nay, nearly identical) optical stack to work with a second 'scope, so I wouldn't have to keep hunting for a 40 when acquiring a target in the eyepiece. This is a great, yet often overlooked, workhorse eyepiece.
Zachary Maughmer
Reviewed in the United States on July 15, 2016
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 Galaxies, Nebulae, and Globular Clusters.The Celestron Omni series 40mm was perfect for this application.I can see quite a few deep sky objects through this lens that were nearly invisible through smaller lenses I own.It also lends a great amount of clarity too the easier ones like The Orion Nebula.The Omni Series is a great line of high quality lenses for hobbyist prices.The lens is made of metal, not plastic, and is made with fairly rugged design.It could survive an accidental drop, as mine unfortunately has.It still works perfectly.The rubber eyepiece folds out, which works great, and has not shown any age or wear after a year and a half of use.I recommend it.
Zurab
Reviewed in the United States on October 12, 2016
it's ok)
verbius
Reviewed in Spain on December 29, 2011
Aunque el angulo de visión no es muy alto, poco mas de 40º, la definicion, la nitidez y el contraste son excelentes. Es un muy buen ocular para la localizacion de los objetos. Es muy recomendable para telescopios de f alto, en los de focal corta puede dar alguna distorsion muy al borde, aunque casi inapreciable. En resumen un buen ocular.
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