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The Celestron Ultima 100 series was designed to perform well in a range of viewing situations. Outdoor enthusiasts and adventurers will love it for observing nature and sharp long-distance spotting. The 100mm refractor features excellent multi-coated optics packed into a portable and durable housing and includes a powerful 22-66x zoom eyepiece.
The Ultima spotting scope is completely waterproof and fogproof. It’s been filled with dry nitrogen gas and sealed to prevent internal fogging of the lenses. You’ll be able to enjoy your viewing activities to the fullest even during extreme weather conditions! The Ultima 100 angled spotting scope also includes a T-mount adapter for digiscoping; this allows you to capture bright, sharp images through your spotting scope. Simply attach your DSLR camera equipped with a T-ring, and you’re ready to go!
Each Celestron optical product is engineered for the highest performance, durability, and quality in its class. Celestron optics provide you with a lifetime of viewing enjoyment at an unbeatable value! Buy with confidence from the world’s #1 telescope brand and a leading sport optics brand, based in California since 1960. You’ll also receive a Limited Lifetime warranty and unlimited access to technical support from our team of US-based experts.
From the Manufacturer
The largest aperture scope in the Ultima line, the 100mm Ultima offers more than 50% brighter images than the 80mm, allowing for better performance in low light conditions. The 100mm refractor features excellent multi-coated optics packed into a portable and durable refractor design and comes standard with a 22-66x zoom eyepiece. This series was designed to perform well in a range of viewing situations, making it a great all-around optical instrument. Youll love it for observing nature and long distance spotting. The green rubber optical tube allows for subtle observation in any nature environment. Ultima spotters are a great companion for any nature or outdoor enthusiast.
Eagle Vision
August 19, 2025
I use spotting scopes for several purposes: Star Gazing, Looking around the valley, target shooting, enjoying the moon, and bird watching from home. We live on a mountain view home with a moderate sized piece of land.A nylon carrying bag is a provided but it is not protective in the sense of drops or shock. The covers for the objective and eyepiece are rudimentary.This scope doesn't come with a tripod. It needs a heavyweight stable base to work well, particularly at high magnification. This has a stabilizing bar that gives a more secure feel.The zoom is functional, and it does work out to the highest level. However, due to effects of sun, it can make for an indistinct view. The focus is adjusted in the front part of the body. The zoom is adjusted just under the eyepiece. For the money, it's a great quality scope. It's not a Swarovski or Vortex, but it's good enough for me.I can sight buildings and tractor trailer trucks several miles away. I can see the street conditions a few miles away. The scope works well out to 150 yards. There weren't any targets available at 250 yards. I could see shoot and see hits very distinctly.The biggest and major negative is size and weight. It's bigger than the average more practical scope, but I'm adaptable. I purchased a large carbon fiber tripod for this and it works extremely well.Overall, I'm very pleased.
Savvy Online Consumer
August 11, 2025
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westsidemd
June 29, 2025
the only reason i'm dinging this scope at all is that the large lens cap that came with it doesn't fit the scope right or its ridge is damaged such that it barely fits on it and falls off if you sneeze or look at it wrong. so total F for the lens cap....but the scope!!!the scope itself is so worth well beyond the money. i stared through leupolds and vortexes that were many many times the price of this scope while shopping around, but based on the reviews here at amazon decided wth, i'll give this celestron a try. i had purchased a celestron microscope for my kids in the past and was impressed with its quality so i thought why not. well, i'm so glad i didn't shell out 4 digits for a more expensive scope because this scope delivers. the quality of glass amazed me. it was very very clear. at 150 yards and less i could CLEARLY see .223 holes made on WHITE paper. when you get further, you can still see it but like all scopes once you have to zoom out too far, the shake makes it harder to see. i took this scope to the range with my friends--one of whom had the 4 digit vortex scope which was definitely quality, but provided no better of a view than my celestron. seriously, no better of a view. they looked equally clear and had the same zoom. we spotted each other for hitting big steel targets at 300 and 400+ yards!back at home, the spotting scope also works beautifully to look at stars or bird watch with the kids.you absolutely need to get a quality tripod for a any spotting scope and this one is no exception. in fact, make sure your tripod is sturdy. as you can see, this scope is very front heavy and you don't want to tip over. also, there are camera adapters available for this scope so you can take pictures of your spotting scope view. i haven't tried this yet but mean to in the future.this scope is one of my "phew!" purchases of the year. the kind where you take a chance and are just beyond satisfied. very very happy with it! it is perfect for the shooting range.
John Urish
March 22, 2025
Very nice spotting scope. Good clear images at lower magnifications. Sharpness falls off slightly at the higher magnifications. Some slight color fringing near the image edge. Good eye relief. Great $ value for this size(100 mm) scope. The unit is solidly made with good finish. I would not take it out in a downpour, but there appears to be good water-proofing. It comes with a case that opens at both ends to allow use without removing the case. The eyepiece is removable and has a standard thread. The included, adjustable, balancing mount is sturdy and functional. You will need a solid tripod for this scope. It's quite heavy. The angled end does not rotate. If you need to mount this scope high, you'll need a step up or get the straight version. It's not a Swarovski, but at more than $2000 less, it's a solid value. I can recommend it for general viewing and non-photographic work.
Nikhil L.
March 1, 2025
From astronomical viewing:> Moon looks great!> Jupiter's moons are visible as faint dots.> Saturn's rings are visible but barely.Product:> Provided smartphone adapter is great. Take's some time to adjust properly but works like charm once adjusted.> Very very faint discolouration at 55x zoom. Not prominent and would not interfere with the experience.(Pic: Moon pictured on Samsung M51)
Camping Guy
January 19, 2025
I am able to see Jupiter 4 moons Saturn Rings , Moon in high details money well spent . No extras needed. Good carrying case , good lense plastic cover. Any basic tripod can work with this telescope but you need tripod to watch planets and objects on land I can easily spot people at a distance of one and half KM away this is for me I don't know about others. Light weight easy to carry on shoulder. Easy to zoom with 2 different adjustments provided.
Soner Bağcı
January 17, 2025
Ürün gayet iyi malzeme doku netlik ayarı fiyatına göre çok başarılı.
MAHADEVAN PAVITHRAN
December 6, 2024
Bought the scope for ALAPPUZHA District Rifle Club 50 meter Shooting Range to check the target after shooting.You can read the MRP on a Cement Bag at 40 meters. The build quality is superb. Magnification is enough to see clearly to 300 meters. Scope has no mini tripod, this has to be bought separately. The eye piece comes in a separate box: just screw it in. There is a tripod attachment, which makes fixing the scope easy, on to any standard tripod.Adjust the eye piece for magnification and a separate small dial on top for focusing. You will get crisp crystal clear view. Amazing buy. Just loved it. Came packed securely inside its own cover.
chris
November 13, 2024
Good Viewing spotting scope and I highly recommend this product.
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