Celestron 21063 Telescope Review
Our verdict
The Celestron 21063 is a well-regarded entry into mid-range refractor territory, carrying a 90mm objective lens that gathers meaningful light for lunar and planetary views. At $299.99 and a 4.2-star average across 417 reviews, it has earned a broad base of buyer confidence.
Check price on AmazonBest for
Beginner to intermediate stargazers who want a step up from entry-level scopes and are comfortable with manual focus.
Skip if
You need go-to motorized tracking or want to image deep-sky objects that demand a larger aperture.
- Objective lens 90 Mm
- Focus Manual Focus
- Dimensions 34 X 30 X 52 In
- Weight 5.58 lb
- Priced 40% below the category median ($499.99 across 15 tracked models)
- Weight of 5.58 lb - lighter than 62% of the 15 models we track
Our scorecard
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Owner rating4.2/5
4.2 average across 417 owner ratings
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Popularity5.0/5
417 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other optics: binoculars, telescopes, spotting scopes, rifle and hunting scopes, rangefinders, night vision and monoculars we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
["The Celestron 21063 uses a 90mm objective lens, which is a meaningful size bump over the common 70mm beginner scopes. More aperture means more light-gathering, translating to sharper contrast on the Moon, cleaner views of Saturn's rings, and better definition on Jupiter's cloud bands under good seeing conditions.", 'At roughly 5.6 pounds, the optical tube is manageable, and the overall assembled dimensions of 34 by 30 by 52 inches suggest a full-sized setup rather than a travel instrument. Manual focus is the only tuning mechanism, so you dial in sharpness by hand, which is standard at this price point and easy to learn.', 'With 417 reviews and a 4.2-star rating, this scope sits in a well-documented segment of the market. The rating indicates most buyers are satisfied, though as with any optical instrument, results depend heavily on collimation, a stable mount, and atmospheric conditions on the night you observe.']
Pros
- 90mm objective lens gathers noticeably more light than 60 to 70mm entry scopes
- Strong review base of 417 ratings gives reliable signal on real-world performance
- Manual focus is straightforward and needs no batteries or electronics
- 5.58 lb tube weight is portable enough for backyard use
- Established Celestron brand with good accessory ecosystem
Cons
- No motorized tracking, so planets drift out of the field without manual correction
- Magnification spec is not listed, making eyepiece planning less transparent
- At $299.99 it sits in a crowded segment where mount quality varies by bundle
Specifications
| Objective lens | 90 Mm |
|---|---|
| Focus | Manual Focus |
| Dimensions | 34 X 30 X 52 In |
| Weight | 5.58 lb |
Performance notes
The 90mm objective is the core spec to anchor expectations. A larger objective gathers more light and, in good atmospheric conditions, resolves finer detail. Manual focus on a refractor of this size is responsive and generally precise. The assembled footprint, 34 by 30 by 52 inches, means this is a dedicated setup instrument rather than a grab-and-go.
What buyers say
417 reviews with a 4.2-star average is a solid signal in the telescope category, where many models collect far fewer ratings. The score suggests that the majority of buyers got views that met or exceeded expectations, with the typical spread of opinions around mount stiffness and included accessories.
Similar optics: binoculars, telescopes, spotting scopes, rifle and hunting scopes, rangefinders, night vision and monoculars to consider
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Frequently asked questions
Is the Celestron 21063 good for viewing planets?
The 90mm objective gives enough aperture to show Saturn's rings clearly, Jupiter's main cloud bands, and lunar craters in good detail. Performance on any given night depends on atmospheric steadiness, but the optics are capable of rewarding planetary sessions. A quality wide-field eyepiece and a higher-power eyepiece will let you get the most out of the aperture.
Does it work for deep-sky viewing like nebulae or galaxies?
A 90mm refractor can show the Orion Nebula, the Andromeda Galaxy, and many open star clusters, but aperture limits how much detail you resolve on faint extended objects. For serious deep-sky work, larger aperture reflectors are a better fit. This scope is best treated as a planetary and lunar instrument with bonus wide-field capability.
How heavy and portable is it?
The optical tube weighs 5.58 pounds, which is light enough to carry to a dark site, but the assembled dimensions of 34 by 30 by 52 inches mean the full setup is not a compact package. Most users treat it as a backyard scope stored indoors and set up on a patio, rather than a true travel instrument.