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Celestron - AstroMaster 90AZ Refractor Telescope - Refractor Telescope for Beginners - Fully-Coated Glass Optics - Adjustable-Height Tripod - BONUS Astronomy Software Package

4.3 out of 5 stars 199 ratings

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Brand Celestron
Model Name 210638
Objective Lens Diameter 90 Millimeters
Telescope Mount Description Altazimuth Mount
Item Weight 16.5 Pounds

About this item

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  • POWERFUL REFRACTOR TELESCOPE: The Celestron AstroMaster 90AZ Refractor telescope is a powerful and user-friendly refractor telescope. It features fully-coated glass optics, a sturdy and lightweight frame, two eyepieces, a StarPointer red dot finderscope and an adjustable tripod.
  • HIGH-QUALITY 90MM OPTICS: The heart of the system is a fully-coated 90mm primary mirror. The AstroMaster mount features a panning handle that allows you to make precision adjustments to view celestial and terrestrial objects.
  • QUICK SETUP & LIGHTWEIGHT FRAME: This telescope for adults and kids to be used together features a lightweight frame and a manual Altazimuth mount for smooth and accurate pointing. Setup is quick and easy, with no tools required.
  • INCLUDED ACCESSORIES: We’ve included 2 eyepieces (20mm and 10mm), a tripod, erect image star diagonal, and a StarPointer red dot finderscope. Accessories also include a FREE download of one of the top consumer rated astronomy software programs.
  • UNBEATABLE WARRANTY AND CUSTOMER SUPPORT: Buy with confidence from the world’s #1 telescope brand, based in California since 1960. You’ll also receive a two-year warranty and unlimited access to technical support from our team of US-based experts.

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From the manufacturer

AstroMaster 90 AZ

AstroMaster 90AZ

A favorite first telescope for beginners, the AstroMaster 90AZ refractor offers sharp, detailed views of Saturn’s rings, Jupiter’s moons, and more. It’s the easiest way to discover the night sky.

AstroMaster 90AZ

Better Viewing

Includes everything you need to get started with astronomy: two 1.25” eyepieces (20mm and 10mm), finderscope, erect image diagonal, and free Starry Night astronomy software.

eyepieces, finderscope, erect image diagonal

Comparison Chart

AstroMaster 90AZ

AstroMaster 90AZ

AstroMaster 70AZ

AstroMaster 70AZ

AstroMaster 102AZ

AstroMaster 102AZ

AstroMaster LT 60AZ

AstroMaster LT 60AZ

Aperture
90mm (3.54”) 70mm (2.76”) 102mm (4.0”) 60mm (2.36”)
Focal Length
1000mm (39”) 900mm (35”) 660mm (23.6”) 700mm (28”)
Focal Ratio
f/11 f/13 f/6.5 f/12
Magnification
50x,100x 45x, 90x 33x, 66x 35x, 70x
Limiting Magnitude
12.3 11.7 13.7 11.4
Low Useful Magnification
13x 10x 14x 9x
High Theoretical Magnification
213x 165x 240x 142x
Assembled Weight
12.4 lbs (5.6 kg) 11.0 lbs (5.0 kg) 14.1 lbs (6.4kg) 7.5 lbs (3.4 kg)

Product description

Product Description

If you’re in search of a high-quality, professionally designed telescope that is easy to set up and use, the AstroMaster Series 90AZ telescope by Celestron is a superior choice. The AstroMaster 90AZ Refractor Telescope for adults and kids to be used together is a user-friendly and powerful telescope engineered with a lightweight frame and fully-coated optics. Our Celestron telescope features a fully-coated 90mm primary mirror. It also features an AstroMaster Altazimuth manual mount that includes a panning handle that allows you to make precision adjustments to easily follow celestial objects as they appear to move across the night sky. The two eyepieces combine with the 90mm aperture optics to produce amazing magnification. The 20mm eyepiece offers 50x magnification, while the 10mm eyepiece provides up-close views up to 100x. This allows you to focus on distant objects with amazing clarity. We have designed the AstroMaster series of telescopes for kids to enjoy exploring the cosmos with adult supervision. Superior materials provide crystal-clear, bright images of Saturn, Jupiter, and the Moon, along with deep space objects including brighter galaxies and nebulae. You can also use this telescope for viewing land-based objects during daytime hours. The telescope is quick to set up and requires no tools. The kit includes a rugged, pre-assembled tripod with 1.25-inch steel tube legs, which provide a stable platform for hours of safe use. As a bonus, download our BONUS Starry Night Basic Edition astronomy software for interactive sky simulations, a 36,000-object database, and printable sky maps. It’s the best way to learn about the night sky, download printable sky maps, research thousands of celestial objects, and plan your next observing session. Buy with confidence from the world’s #1 telescope brand, based in California since 1960. You’ll also receive a two-year warranty and unlimited access to technical support from our team of US-based experts.

Amazon.com

Celestron’s Astromaster 90AZ refractor telescope is a good choice for anyone who wants a dual purpose telescope. With more than double the light gathering power of 60mm starter scopes, it’s a great introduction to astronomy and it can double as a long range spotting scope. Bigger and more impressive than it looks in pictures, the Astromaster 90AZ is an adult size telescope that stands nearly five feet high and weighs about 20 pounds. With it’s fully illustrated quick set up guide, the telescope is easy to assemble, and the package includes an erect image prism, high and low power eyepieces, and astronomy software for your PC.

Refractors are known for their crisp, high contrast views of the Moon and planets and the Astromaster 90 delivers sharp views right out of the box. The low power 20mm eyepiece (50X magnification) nicely frames the moon, while the high power 10mm eyepiece (100X magnification) delivers a crisp close up image full of detail. The sharp Achromatic optics of the Astromaster 90AZ show me memorable views night after night. On a moonless night I like the way the 20mm eyepiece frames the ghostly glow of the Orion Nebula. Zooming in with the 10mm eyepiece, I can easily pick out all four stars of the Orion Nebula’s embedded quadruple star the Trapezium.

The AstroMaster 90 AZ also features a newly designed Alt-Azimuth mount and tripod. The tripod comes fully assembled, and the telescope simply clamps into a standard dovetail. This new tripod seems reasonably solid, I had no trouble focusing on the Moon and stars even with the high power eyepiece. An Alt-azimuth mount, of course, is best used at low to medium powers because it does not track the motion of the stars. As soon as you get the Moon centered in the eyepiece, it starts drifting toward the edge-this is caused by rotation of the Earth. Celestial objects will stay in the low power field of view for three or four minutes, but with a high power eyepiece they may disappear in a minute or less.

Celestron’s AstroMaster 90 AZ is one entry level telescope that offers great views during the daytime as well as at night. The sharp optics produce a right side up image, the mount is easy to use, and the included planetarium software helps you find planets in the night sky. --Jeff Phillips

Pros:

  • Crisp clear views both day and night
  • Rugged refractor design
  • Quick and easy no-tool set up
  • Erect image prism and two eyepieces included
Cons:
  • Alt-Azimuth mount doesn’t track stars and planets
  • Star pointer not so easy to use

Quarter Moon shot at 50X with a powershot camera.
Quarter Moon shot at 50X with a powershot camera.
Moon as seen at 100X, shot with powershot camera.
Moon as seen at 100X, shot with powershot camera.
Moon as seen at 200X, shot with a powershot camera.
Moon as seen at 200X, shot with a powershot camera.
Finches shot at 50X at a distance of 20 yards.
Finches shot at 50X at a distance of 20 yards.
Finch shot at 100X at a distance of 20 yards.
Finch shot at 100X at a distance of 20 yards.


Product information

Technical Specification

User Manual [PDF ]
Warranty [PDF ]

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Important information

Legal Disclaimer

DUE TO LARGE SIZE & WEIGHT, THIS ITEM WILL ONLY SHIP TO MAINLAND US ADDRESS. NO PO BOX, APO, AFO for this Item.


Customer Questions & Answers

Customer reviews

4.3 out of 5 stars
4.3 out of 5
199 global ratings
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Reviewed in the United States on March 5, 2020
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Reviewed in the United States on October 9, 2019
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Reviewed in the United States on July 6, 2012
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Reviewed in the United States on August 18, 2020
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Reviewed in the United States on July 12, 2019
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Reviewed in the United States on December 22, 2018
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Reviewed in the United States on July 18, 2019
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Reviewed in the United States on September 19, 2016
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Top reviews from other countries

LJC
5.0 out of 5 stars Excellent affordable telescope for beginners
Reviewed in the United Kingdom on August 28, 2018
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46 people found this helpful
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John Doe
5.0 out of 5 stars This AstroMaster Refractor is a great starter telescope in my opinion mainly because of it's ...
Reviewed in the United Kingdom on July 25, 2018
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15 people found this helpful
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Mark
4.0 out of 5 stars Telescope very nice, and does what its supposed to
Reviewed in the United Kingdom on August 6, 2018
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3 people found this helpful
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lindsay robertson
5.0 out of 5 stars Just follow the instructions to assemble & you can’t go wrong.
Reviewed in the United Kingdom on April 13, 2019
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5.0 out of 5 stars Just follow the instructions to assemble & you can’t go wrong.
Reviewed in the United Kingdom on April 13, 2019
Delivery was quick, easy to follow instructions to assemble - only had bother with one part but only took around a half hour to build the whole thing. So far viewing has been limited -loads of cloud cover- however what I have seen so far has been worth it. The detail you can see is fantastic.
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The Boss
5.0 out of 5 stars Great
Reviewed in the United Kingdom on February 23, 2020
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