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Celestron

Celestron – AstroMaster 90AZ Telescope – Refractor Telescope – Fully-Coated Glass Optics – Adjustable-Height Tripod – Bonus Astronomy Software Package

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Availability: In Stock.
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Arrives Jul 13 – Jul 29
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Features

  • POWERFUL TELESCOPE FOR BEGINNERS: The AstroMaster 90AZ is the perfect entry-level telescope for adults and kids eager to explore the night sky. You get bright, clear views and simple, intuitive operation.
  • HIGH-QUALITY 90MM OPTICS: Enjoy crisp, detailed views through the fully coated 90mm (3.5") achromatic refractor perfect for observing the Moon, planets, bright star clusters, and even terrestrial landmarks.
  • VERSATILE DAY & NIGHT USE: Designed for both astronomical and land-based viewing, the AstroMaster 90AZ lets you explore the stars at night and enjoy daytime views of wildlife or distant landmarks.
  • EASY-TO-USE ALT-AZIMUTH MOUNT: Smoothly navigate the sky with a manual alt-azimuth mount and easy-to-use panhandle, which lets you point the telescope up, down, and side to side with precision.
  • QUICK SETUP: With just a few key parts to assemble, you can go from box to backyard in minutesno tools required. The sturdy, adjustable tripod provides stable, comfortable viewing tailored to your height, perfect for adults or kids, standing or seated.
  • ESSENTIAL ACCESSORIES INCLUDED: Comes with two eyepieces (20mm and 10mm), an erect image star diagonal, and a StarPointer red dot finderscope. You'll also receive a FREE download of one of the top-rated astronomy software programs to learn more.
  • UNBEATABLE WARRANTY & SUPPORT: Buy with confidence from Celestron, a leading telescope brand in California since 1960. Your purchase includes a 2-Year US Warranty and unlimited support from our team of US-based experts.

Description

Discover the Celestron AstroMaster 90AZ, an easy-to-use, beginner-friendly refractor telescope perfect for kids and adults to use together. Its 90mm (3.5”) fully coated achromatic objective lens delivers bright, sharp views of the Moon, Jupiter, Saturn, and star clusters. Thanks to its refractor design, the AstroMaster 90AZ provides a right-side-up image, making it just as effective for daytime viewing of land-based objects like wildlife and scenery. This versatile telescope features an intuitive alt-azimuth mount with a smooth panhandle, allowing effortless pointing and tracking without complex setup or alignment. Assembly is fast and frustration-free thanks to the telescope’s simple design with just a few key parts—no tools required. The adjustable full-height tripod ensures a stable base and can be customized for comfortable viewing for adults or kids, in a standing or seated position. The AstroMaster 90AZ comes complete with essential accessories to get you started right out of the box: a 20mm eyepiece for wide-field 50x magnification, a 10mm eyepiece for detailed 100x views, an erect image diagonal, a StarPointer red dot finderscope for fast target acquisition, and a free download of top-rated astronomy software Starry Night to help plan your sessions. Weighing just 12.3 lb (5.58 kg) fully assembled, this telescope is easy to move and set up in your backyard or at a dark-sky site. Backed by Celestron’s 2-Year Warranty and US-based technical support, the AstroMaster 90AZ is an outstanding choice for beginners seeking a simple, versatile, and rewarding introduction to astronomy.

Brand: Celestron


Model Name: AstroMaster 90AZ Telescope


Optical Tube Length: 770 Millimeters


Eye Piece Lens Description: 20mm and 10mm eyepiece


Objective Lens Diameter: 90 Millimeters


Telescope Mount Description: Manual Alt Azimuth


Product Dimensions: 34"D x 30"W x 52"H


Focus Type: Manual Focus


Power Source: Manual


Finderscope: StarPointer™ red dot finderscope


Eye Piece Lens Description: 20mm and 10mm eyepiece


Mount: Manual Alt Azimuth


Focus Type: Manual Focus


Power Source: Manual


Finderscope: StarPointer™ red dot finderscope


Compatible Devices: Not Obtainable (NO)


Number of Batteries: 1 CR2032 batteries required. (included)


Coating: Fully Coated


Focal Length Description: 1000 millimeters


Field Of View: 1.8 Degrees


Zoom Ratio: 51


Additional Features: Observe in no time with a quick and easy, no-tool setup


Optical-Tube Length: 770 Millimeters


Objective Lens Diameter: 90 Millimeters


Item Dimensions D x W x H: 34"D x 30"W x 52"H


Item Weight: 5.58 Kilograms


Exit Pupil Diameter: 1.8 Millimeters


Brand: Celestron


Model Name: AstroMaster 90AZ Telescope


Age Range Description: Adults


Global Trade Identification Number: 38


Manufacturer: Celestron


UPC: 050234210638


Manufacturer Part Number: 21063-CGL


Model Number: 21063


Warranty Description: TWO-YEAR LIMITED WARRANTY


Item Type Name: Celestron AstroMaster 90AZ Telescope


Built-In Media: 20mm and 10mm eyepiece, Erect image 90° diagonal, Manual, Optical tube, Red-dot finderscope, Tripod and mount (preassembled)


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 13 – Jul 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Amazing Telescope, bought it in 2020!
This Telescope is both fun, easy to use and premium. I have been able to see great details on the moon, Jupiter and its classic bands, Saturn and one of it's moons, Titan. I was also able to see Jupiter's galelayen moons, four of them. This premium Telescope also can view stars exceptionally well. It is also incredibly stable, has an easy to use red dot finder, focusing capabilities, a fully rotational design, stable and adjustable stands, an excellent tray for upgrade parts and the two eye pieces and it also comes with the dust covers. Great for stargazers!! Five star by far. ... show more
Reviewed in the United States on December 12, 2025 by C
    • Excellent telescope
I purchased this telescope for my grandson. Although he is still young, I wanted a telescope with enough power to allow him to see planets as well as just the moon. This telescope met that desire. The included spotter scope is very helpful. I was surprised and happy to see how sturdy and well-built the included tripod was. Instructions were easy to follow and we were ready to begin viewing in no time. The unit comes with a phone attachment and an app for your phone that will assist in helping you locate various celestial bodies. I also purchase an optional moon filter. Great telescope for a young person. I would highly recommend. ... show more
Reviewed in the United States on January 7, 2025 by Gregory K. Olsen
    • For a newbie, nice telescope. Mounting is a little frustrating.
So far, so good. We are new to telescopes and this is our first foray. So far we've been able to see a stunning image of the moon. Setup was very easy. I have only one complaint so far. The telescope will not stay at exactly the point you have aimed at as you tighten the tripod arm which secures the vertical position. So basically when you finish tightening, as soon as you let go, the tube will move up slightly. This is very frustrating especially with higher magnification as you have to compensate for this effect sometimes to the point where your target is not even in view so that when you finish tightening it moves up to your desired target. Considering the very reasonable price, I'm not going to lose sleep over it but I know that I'll probably want to get a more stable tripod soon. Or maybe I'm missing something here, but doesn't seem like it. [UPDATE] It's the next night. It's IMPOSSIBLE to tighten the panhandle without raising the altitude. For viewing the moon it's just an annoyance. For viewing planets at 50x (with the 20mm eyepiece) it's a MAJOR challenge to keep your target in view as you tighten (but I was able to get a stunning view of Saturn -- the optics are very crisp). Viewing planets or any individual star or group of stars at 100x is well nigh impossible because of the way that the altitude changes as you tighten the panhandle. To view planets at 100x you will need a better tripod mount. Lowering my rating to 3 stars. :( [ANOTHER UPDATE] The problem is too much vertical play in the azimuth which throws off altitude. Making sure the azimuth is completely tightened before adjusting altitude helps. But it does not solve the problem. Not sure there's anything to be done except get a better tripod mount. [ONE MORE UPDATE] Celestron customer service has been great. Service is part and parcel of a product, so I re-up to four stars. ... show more
Reviewed in the United States on July 6, 2012 by The Dawdler
    • Great, capable, and easy-to-use telescope
This was a Christmas gift for my 9 year old daughter. It’s a little big for her, but the telescope is something that the whole family can enjoy together. We have especially enjoyed looking at our moon and the moons of Jupiter. I am very glad that we did not get the equatorial mount version, as that would have been way too complicated for our kids. ... show more
Reviewed in the United States on March 23, 2024 by Random Shopper, Esq.
    • Good telescope, bad stand that ruins the experience
So I think the telescope portion of this product is decent, especially for beginners. I did not expect this to work out of the box with the snap of a finger. It's a fragile product with lots of sensitive pieces, so getting started, set-up and running took a bit time and getting used to. But the effort is well worth it. However, where this thing really underdelivers is the stand/tripod. Mine is either busted, used or simply not up to the task. I have read some other reviews that indicate that this stand simply is the weak point of the product. Adjustments are too clunky and the slightest touch from anything brings the setup out of alignment. Mine also seemed to have a bad movement system as the film that I believe was supposed to between some inner pieces of the movement reached out of the movement and made the adjustments even tougher. I had to revert to an alternate tripod I had available for my photography purposes, which was much better suited and actually functional. But at this price I expect something working. The telescope itself is good I guess, once you get the object in scope. Finetune the finder at daytime, not at night when you want to focus on actual viewing. It comes with two lenses (?) and they offer a decent different range for different types of objects. I believe to have had a good look at saturn, but let's be honest: Do still not expect more than a look at a bright shiny round white object. Where this shines is getting a better look at the moon. Set that at your goal and you'll be happy with what you got. But as mentioned above, be ready to invest in a different tripod that can be adjusted on three axis or have something available already. ... show more
Reviewed in the United States on August 16, 2021 by Christian Kotitschke
    • Fantastic scope at a great price
I am very impressed with this telescope. I had a Meade reflector that cost twice as much. It didn't work well for me since there are so many trees around where I live. It was computer-driven. This is sort of like having a point and shoot camera as opposed to a complicated SLR. The scope was incredibly easy to set up right out of the box. The 90mm is longer than I was expecting but still easy to carry and not heavy. I love the deep blue color. The only complaint I would have is that the accessories tray doesn't fold up with the tripod part, you have to remove it. That is the only drawback I've found thus far. I was able to line up Jupiter easily and see it better than I have before. Could see 4 moons and the bands on it clearly. I haven't been able to see Saturn yet, but should be able to see its rings with the magnification it has with just the lenses that came with it. Can't wait to try out my barlow lens with it. It has great power for such a low price. I still can't believe it was only $200. It is an incredible telescope. I would highly recommend it for beginners or advanced users. ... show more
Reviewed in the United States on September 4, 2010 by Mal
    • VERY nice telescope
I bought this telescope as a gift to my boyfriend. At first, I had no idea how to choose a telescope, so I did some research. I am extremely happy with my purchase. The telescope is easy to assemble and relatively light. It took my boyfriend about 20 minutes to zoom correctly and view defined objects and planets. Definitely a telescope I would recommend to beginners!! ... show more
Reviewed in the United States on August 2, 2020 by Marta Pasqualini
    • The starfinder is impossible to use at night
It looks better than the picture. My friend thinks it is beautifully standing in my living room. Good for terrestrial use if you keep the power lower than 100x, especially for backyard bird watching. For celestial use, the street light is a little strong for us. But the moon is amazing. I saw one faint belt of Jupiter when I just got the scope. The space between the rings of Saturn and the planet are clearly seen. My son is very happy. But I do not see the Cassini Division. The fourth star in the trapazium in Orion Nebula is visible. Our next target is the Great Nebula in Andromeda. The insteresting part is that I feel I can see more than when I just got the scope. So the skils do help a lot. The two eyepieces are not plossl. I think they are kellner. The FOV of the 10mm is narrow. The 20mm one is more comfortable to use. The center image quality of both lenses is good. They are enough for entry level users. The tube is a little long. When view targets close to zenith, the eyepiece position is pretty low. It is not convenient for adult users, but very good for young kids. My three-years-old one enjoys the beautiful view of our moon very much. The mount is shaky when reach 100x. But I think it is fair for an entry level scope. I did go to a telescope center to try the sturdy Celestron Omni 102 and Orion xt6. They are bulky and heavy. I still like the Celestron 90az for casual watching. The red-dot starfinder is almost useless at night. You can not see the two circles in the finder, so can not precisely locate stars. I just look from the top and side of the long tube to align the scope to my target. It is hard for dim targets. You need a better finder. The worst thing is you have to find a way to mount your new finder. UPDATE: Finally we saw the Great Nebula (M31) in Andromeda tonight. It is a faint white-gray smudge. From forums, we know that is only the brighter core. But we are very excited. It is 2.5 million light years away! If I move my eye, I think I can feel the spiral structure. The best power for us to view it is 50x-60x. Originally I thought the plastic diagonal does not fit my Celestron 8-24zoom. Finally it shows the 8-24 Zoom is a defective one (the diameter is too big). ... show more
Reviewed in the United States on March 26, 2011 by TedW

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