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Celestron

Celestron AstroMaster 90EQ Refractor for Lunar & Planetary Views

Based on 316 reviews
Condition: New
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$319.99
Holiday Deal · 11% off was $359.95

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Arrives Sunday, Nov 15
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At a glance

Condition
New
Style
AstroMaster 90EQ
Dimensions
30"D x 15"W x 51"H
Weight
13.7 lb
Optical Tube Length
7 cm
Focus Type
Manual Focus
Power Source
Battery Powered
Warranty
TWO-YEAR LIMITED WARRANTY
Works with
Eyepieces, Tripod, Star Diagonal, Finderscope

Features 7

  • POWERFUL TELESCOPE FOR ASTRONOMY BEGINNERS: The AstroMaster 90EQ delivers sharp optics, a stable equatorial mount, and smooth manual controls, making it the top choice for beginners ready to explore the night sky.
  • HIGH-QUALITY 90MM OPTICS: Enjoy views through the 90mm (3.5) refractor, which features fully coated optics and enough light-gathering ability to view all the best celestial objects.
  • VERSATILE DAY & NIGHT USE: Designed for both astronomical or land-based viewing, the AstroMaster 90EQ lets you explore the stars at night and enjoy daytime views of wildlife or distant landmarks.
  • SMOOTH, ACCURATE POINTING: Effortlessly aim and center your target using the two slow-motion control knobs for right ascension and declination whether youre observing planets or deep-sky objects.

Description

Discover the night sky with the Celestron AstroMaster 90EQ, a beginner-friendly telescope designed for casual stargazing, planetary observation, and deep-sky viewing. Its 90mm (3.5") objective lens gathers plenty of light, revealing, detailed views of Saturn’s rings, Jupiter’s moons, lunar craters, and distant galaxies like Andromeda. Fully coated optics boost brightness and contrast, delivering stunning clarity on every target. The refractor optics deliver detailed, right-side-up daytime views of landscapes, wildlife, or distant landmarks. After dark, enjoy the best the night sky has to offer, including the Moon, planets, and stars. The sturdy German equatorial mount features slow-motion control knobs that let you make precise manual adjustments in right ascension and declination, perfect for smoothly centering and following objects. Assembly is fast and frustration-free thanks to the simple design with just a few key parts; no tools are 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 90EQ comes complete with all the essential accessories you’ll need, including a 20mm eyepiece offering 33x magnification, a 10mm eyepiece offering 65x magnification, a 90°erect image diagonal, a StarPointer™ red dot finderscope to help you quickly locate objects, and a free download of Starry Night, the top-rated astronomy software to help plan your stargazing sessions. Weighing just 13.3 lb (6.21 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 90EQ is the perfect choice for beginners eager to explore the wonders of the universe. From the Manufacturer If you're looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing, then the AstroMaster Series is for you. Each AstroMaster model is capable of giving correct views of land and sky. The AstroMaster Series produce bright, clear images of the Moon and planets. It is easy to see the moons of Jupiter and the rings of Saturn with every one of these fine instruments. For views of the brighter deep space objects like galaxies and nebulae, we recommend the larger aperture and light gathering ability of the Newtonian reflectors.

Specs 32

Brand Celestron
Model Name AstroMaster 90EQ Telescope
Optical Tube Length 7 centimeters
Eye Piece Lens Description Kellner
Objective Lens Diameter 9 centimeters
Telescope Mount Description Equatorial Mount
Product Dimensions 30"D x 15"W x 51"H
Focus Type Manual Focus

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 15

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

A Tip on Balancing the EQ Mount...
Style: AstroMaster 90EQ
It took me a while to figure out how to properly balance the telescope on the EQ mount. The R.A. balancing was particularly troublesome... the counterweights always won. Then I realized the trick -- only install ONE of the counterweights. The mount comes with two, but you only need one for a telescope of this weight. After getting the balance right, it works like a dream. The slow-motion controls allow me to easily hone in on and track objects, and the optics of the telescope give a clear, vibrant view of the night sky. ... show more
Reviewed in the United States on April 13, 2012 by jramos
A perfect first telescope!
Style: AstroMaster 90EQ
A perfect first telescope! Especially suited for lunar and planetary viewing. The views of the moon through this telescope are breath-taking! The EQ mount makes tracking objects so much easier once you get used to it; you will spend more time enjoying actually viewing, instead of fighting adjustments as with an AZ mount. Overall this is an outstanding scope! Well worth the jump up from the 70mm. For the highest contrast, sharpest views of the planets a refractor is definitely the way to go! Also, practically zero maintenance and no time spent collimating. Just put it on the mount and get right to viewing! Purchased Astromaster Accessory Kit: it's a decent upgrade for this telescope if you're on a budget, but I can't recommend it. The 15mm Kellner actually performs well for a cheap eyepiece. However, the filters in this kit are too dark for a refractor of this size, and you really won't get any benefit from them on the planets. You really don't need a barlow lens for this scope, because the magnification range is fairly narrow; you just need the right size eyepieces. Skip the kit and purchase the Agena AstroProducts EWA 9mm eyepiece instead; for $45 I challenge you to find a better performing eyepiece! It really takes views through this instrument to a whole new level! Very comfortable for extended viewing, with great eye-relief, a wide field of view, and excellent contrast! This single eyepiece makes every starter eyepiece in your collection obsolete! This entire line of eyepieces are incredible for the price! This scope really shines in the x111 to x166 magnification range. Sometimes it takes a little patience to really nail the focus, as the focuser adjustment is a bit coarse. If it's within your budget I recommend the prism diagonal 90 by William Optics which has a 15mm fine helical focuser adjustment (Agena AstroProducts carries it). It's worth every penny, and is an incredible upgrade. Looking through the Agena EWA 9mm on this diagonal is like having a new telescope, and everything I viewed was like looking at it again for the first time! The moon through these optics will simply blow you away! To get the most out of this instrument, upgrade the cheap, plastic diagonal, and don't buy the cheap "kit" lenses. Clear Skies! :) ... show more
Reviewed in the United States on August 25, 2017 by Steven
An excellent choice
Style: AstroMaster 90EQ
Review Image by austyn lombardo
My experience starts with their small travel scope that I've used quite often and did okay for its price. This scope is a huge upgrade in terms of quality. The tripod is excellent and can be fine tuned to center your target and the scope is a big upgrade compared to the travel scope I use. Combining this with celestrons 3x Barlow scope and their zoom lense that I originally used on the travel scope. Look forward to trying it out later tonight. It was easy to set up read the directions if needed they are pretty simple, but your just putting a couple pieces together. *A warning though it is pretty hefty so be careful carrying it* I also didn't have any issues regarding quality or damage to the item that others have experienced ... show more
Reviewed in the United States on September 26, 2022 by austyn lombardo
Perfect starter telescope.
Style: AstroMaster 90EQ
My wife has been looking at telescopes for a while, but she didn't know how much they cost, so she never asked for one. I did a little bit of research and found that I could afford this one. The reviews were pretty good and it looked very neat. I didn't expect much for the price, but I figured it'd be a good starter telescope. Needless to say, we're beyond happy. It's very easy to assemble (I didn't even use instructions) and works flawlessly. We were so happy to be able to view the moon and all the details on it. I just bought a T-adapter and a T-ring for her D7000 camera so that she can do photography, but I'm also planning on buying more lenses later on. It's a great product. I highly recommend it. ... show more
Reviewed in the United States on December 5, 2012 by B.K.
This Telescope is Great!
Style: AstroMaster 90EQ
Easy to assemble, well packaged when delivered. Now the fun part. The basic lens that comes with it is good enough that you have to get more! You just have to. We've had a lot of fun watching the moon, several planets, including Jupiter and checking out the constellations with this unit. We have added a couple more lenses to our new hobby, and we need to buy stock in mosquito repellant because we live in Michigan, but we are really enjoying this! ... show more
Reviewed in the United States on June 29, 2014 by Kindle Customer
Good value for price
Style: AstroMaster 90EQ
The views, at least for the moon, (I live in a really light polluted area), are great, but the mount is a little wobbly when fully extended. Ota and eyepieces are good.
Reviewed in the United States on June 25, 2025 by Michael D. Lundquist
Better quality scope
Style: AstroMaster 90EQ
Liked the quality and equatorial mount once I got used to it. Ended up getting higher quality lenses for it. Only negative was how heavy it is to move around. I could see the bands of Jupiter and 4 of it’s moons.
Reviewed in the United States on March 3, 2023 by Amazon Customer
I own 2 of these but, th done I got from here on Amazon?
Style: AstroMaster 90EQ
Ok, so back in 2017, I purchased this exact same telescope but I purchased it at a local store that also sold Cameras & lenses etc. And I bought if for my grand daughter & I to look around at stuff in the sky at night and over things. When she was older, I let her take the telescope home so she could have fun with her new fun hobby by herself & she has become quite an Astro Photographer in the last 2 or 3 seasons. Now in 2020 I decided I would by my other sons son, My Grandson one as well & have him start the same way I taught my grand daughter. And since no one locally sold them anymore I had no choice to order one from Amazon. The only difference between the 2 is the first one I bought had host the simple adjuster, this second one had the German equilateral setup. When it arrived at first I didn’t think about it when I unpacked it. But a few weeks later at my granddaughters 90mm the build quality was 10 times better than the nes one. So I asked he to bring it over the next time she came over.Which she’s did. And as soon as I put these side by side, even they said the same model. Looking closer they might has well been made by 2 different makers as they weren’t even close. I pulled bothe of them off their tripods & weighed them, the old one was 6 pounds heavier than the new one! And then with a little other looking around at it, the focus teeth were finer, the eyepieces were better quality, and the new one had dust & dirts iside the ube. I would have returned it but amazon said I was 2 days over the returning date. So, none the less, I’m stuck with this un-focusable POS from either Amazon or Celestron (called them too) So I guess I get to eat the cost of the newer & cheaper made current version… You’d be better off finding some one selling an older one off MArketplace & cleaning it up if you want one with more quality. ... show more
Reviewed in the United States on December 20, 2024 by Gene Sisson
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