Techtober SaleEnds Sunday. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product Search
Main Content

Celestron - AstroMaster 90AZ Refractor Telescope - Silver

Model: 21045
SKU: 12562895
Sold & shipped by

About this product

Immerse yourself in the fun of astronomical exploration using this Celestron AstroMaster 90AZ 21063 telescope that features 10mm and 20mm eyepieces and 13-213x magnification power for viewing clarity and a StarPointer finderscope for targeting objects.

Features

  • 13-213x power magnification

    To help bring terrestrial and astronomical objects within sight.

  • From our expanded online assortment; not available in all Best Buy stores

  • 1000mm focal length; f/11 focal ratio

    For clarity and precision.

  • Built-in StarPointer finderscope

    Helps highlight the subjects you are viewing.

  • Altazimuth mount with panhandle control

    Along with a steel tripod and dovetail attachment to make setting up and positioning the telescope a snap, without the need for installation tools.

  • SkyX First Light Edition software

    Features a 10,000-object database, printable sky maps and 75 enhanced images to help you make the most of your stargazing experience.

  • 90mm diameter

    Along with a refractor optical design for improved visibility.

  • Accessory tray

    Makes it easy to keep telescope peripherals within reach.

  • Multicoated erect image optics

    Deliver high light transmission for a detailed view.

Specifications

  • Brand
    Celestron
    Model Number
    21045
    Product Name
    AstroMaster 90AZ Refractor Telescope
    Color
    Silver
    Assembly Required
    Yes
    Optical Tube Dimension Diameter
    90 millimeters
Sponsored

Reviews

Rating 4.6 out of 5 stars with 9 reviews

5 star rating. 5 reviews4 star rating. 4 reviews
89% would recommend to a friend

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 4 out of 5 stars

    Good for a beginner

    Great starter telescope. Spent a lot of time researching and there are a lot of professional opinions that seem to contract each other. Got this one and is pleasantly surprised at the results. The only minor drawback is the stability of the stand, but not unreasonable for a beginner scope

    This review is from Celestron - AstroMaster 90AZ Refractor Telescope - Silver

    Posted by pmill

  • Rated 4 out of 5 stars

    Good scope but AZ mount and Starfinder is no good.

    Scope is very good but AZ mount is stiff and hard to use. Starfinder is useless. It does not line up well and adjustment seem impossible. Recomment scope with EQ mount for about $30 more and includes a regular finder scope. The Starfinder is just too close to the barrel for me to get my eye against it. Maybe my head is too big! LOL.

    This review is from Celestron - AstroMaster 90AZ Refractor Telescope - Silver

    Posted by JoeMofMullicaHillNJ

  • Rated 4 out of 5 stars

    decent little telescope

    works pretty well. still figuring out the little button/little scope to the side. but is a great first telescope. got it originally for my 4.5 year old for christmas. when the moon is out right, you can really see the detail. thats really neat. we saw very faint rings on saturn one night way up in the N GA mountains where it was really clear and dark.

    This review is from Celestron - AstroMaster 90AZ Refractor Telescope - Silver

    Posted by Leec

  • Rated 4 out of 5 stars

    Nice telescope

    Nice telescope. Good for viewing the moon. Wish the start finder was further away from the telescope - it's hard to see unless you stoop down below the telescope.

    This review is from Celestron - AstroMaster 90AZ Refractor Telescope - Silver

    Posted by Benjyboy87

  • Rated 5 out of 5 stars

    love it

    My kids and I loved it.can't wait to start seeing the planets with the telescope

    This review is from Celestron - AstroMaster 90AZ Refractor Telescope - Silver

    Posted by ivanhoe

  • Customer reviews from bestbuy-ca

    Syndicated rating, 1 out of 5 stars with 1 review on bestbuy-ca.

    See all bestbuy-ca reviews

Compare similar products

Celestron - AstroMaster 90AZ Refractor Telescope - Silver
Celestron - AstroMaster 90AZ Refractor Telescope - Silver
4.6(9)

Immerse yourself in the fun of astronomical exploration using this Celestron AstroMaster 90AZ 21063 telescope that features 10mm and 20mm eyepieces and 13-213x magnification power for viewing clarity and a StarPointer finderscope for targeting objects.

Celestron - Starsense Explorer LT 114AZ Telescope App-Enabled Newtonian Reflector Telescope - Silver/Black

Celestron has reinvented the manual telescope with StarSense Explorer—the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time. StarSense Explorer is ideal for beginners thanks to the app’s user-friendly interface and detailed tutorials. It’s like having your own personal tour guide of the night sky. Dock, Launch, Explore. Leave complicated star charts, imprecise planetarium apps, and computerized mounts behind. With StarSense Explorer, locating objects has never been easier, faster, or more accurate. Within minutes of setting up the telescope, you’ll be navigating the sky with confidence. Simply place your phone in the unique StarSense dock and launch the StarSense Explorer app. After aligning your phone to the telescope’s optics (a quick, 2-minute procedure), StarSense Explorer generates a list of celestial objects currently visible. Make your selection and arrows appear onscreen, guiding you as you to move the telescope. When the object is ready to view, the bullseye turns green. Smartphone Compatibility-StarSense Explorer works with most modern smartphones; it is compatible with Android 12 and later, as well as iOS 18 and newer, including iPhone XR and newer models. Users with older phones can still use this app, but will not be able to reinstall the app if they uninstall it. Patented StarSense Sky Recognition Technology-StarSense Explorer uses patented technology and your smartphone to determine exactly where the telescope is pointed in the night sky. A Lost in Space Algorithm (LISA), like the ones satellites use in orbit to correctly orient themselves, helps the app match star patterns it detects overhead to its internal database. While other astronomy apps may claim that they can help you find objects, they rely exclusively on the phone’s gyros and accelerometers, which aren’t as accurate as LISA technology. No other app can accurately tell you when your target is visible in the eyepiece. Sturdy Altazimuth Mount, StarSense Explorer LT’s simple altazimuth mount makes it easy to move the telescope to find your target. An altitude slow motion adjustment with a sliding rod helps you fine tune the telescope’s pointing position and follow targets as they appear to drift across the night sky. It’s all anchored by an adjustable, full-height tripod.Dazzling Views with High Quality Optics. With a large 114mm (4.5”) objective lens, this telescope has enough light gathering ability to bring out detail in celestial objects. You can expect sharp, bright views of Jupiter’s four Galilean moons, its cloud bands and Great Red Spot, the rings of Saturn, the trapezium in the Orion Nebula, and beautiful Pleiades Open Star Cluster. Perfect for the City or Dark Sky Sites. Even if you live in a light polluted city location, StarSense Explorer is advanced enough to be able to pick out Jupiter, Saturn, Venus, the Orion Nebula, double stars, and a few more of the most famous celestial objects. But if you can take the telescope to an even slightly darker location, more objects will become visible. With this 4.5” Newtonian and relatively dark skies, the Andromeda Galaxy, Hercules Open Star Cluster, and so many more are easily within your reach. The entire telescope kit weighs just 10.4 pounds, so it’s perfectly portable and easy to bring on your next camping trip or to a remote observing site.Everything You Need to Observe Immediately. When you unbox your new StarSense Explorer LT, you’ll find:114mm Newtonian reflector optical tube, StarSense dock for your smartphone, Low powered (25mm) and high powered (10mm) Eyepiece, 2x Barlow lens to double the power of each eyepiece, StarPointer red dot finderscope, perfect for using the telescope during the day or without the StarSense Explorer app, Altazimuth mount with slow motion control rod, Full-height tripod with an accessory tray to keep you organized

Celestron - Inspire series 100AZ 100mm Refractor Telescope - Black/Blue
5.0(1)

Explore space with this Celestron Inspire refractor telescope. Its fully coated glass optics prevent glare and provide a wide field of view, while the altazimuth mount sits on top of a rugged steel foldable tripod. This Celestron Inspire refractor telescope has a rubberized smartphone adapter so you can easily take pictures of telescopic images.

Celestron - StarSense Explorer 80mm Refractor Telescope - Silver/Black
4.5(8)

Track celestial objects like the moon in real-time with this Celestron StarSense Explorer telescope. The sky recognition technology syncs to your smartphone for an immersive guided tour of the night sky, while the user-friendly explorer app automatically locates nearby visible objects. This Celestron StarSense Explorer telescope features an LT mount with slow motion control for hassle-free placement and viewing.

Pros for Celestron - AstroMaster 90AZ Refractor Telescope - Silver
There were no pros for this product—Ease of use, Image Quality, Price, Setup, AppThere were no pros for this product—There were no pros for this product—
Cons for Celestron - AstroMaster 90AZ Refractor Telescope - Silver
There were no cons for this product—Magnification, Alignment, Tripod Stability, Focus, InstructionsThere were no cons for this product—There were no cons for this product—

Specs

Questions & Answers

No content

Customers often buy these together

Sponsored