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Celestron AstroMaster 90EQ Telescope

SKU : CE-21064

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  • A 90 mm (3.45-inch) Achromatic Refractor Telescope.
  • Includes Full Kit!
  • Erect Image Optics.
  • Quick, no-tool setup.
  • The Sky Software with images and printable maps.


Product Details

  • The Celestron AstroMaster 90EQ Telescopeisa great dual-purpose telescope excellent for both terrestrial and celestial viewing. Each AstroMaster model is capable of giving image correct views of land and sky. With its time-tested durability and high-quality optics at an affordable price, the Celestron Astro Master makes a great first telescope!

    The AstroMaster 90EQ is a high-quality, economical telescope with a superb optical system. This telescope produces breathtaking views of the Moon, Saturn with its ring structure, Jupiter with its belts, and hundreds of deep-sky objects. Add an optional solar filter and you can observe activity on the Sun. While observing, you'll notice that as the Earth rotates on its axis, stationary stars appear to move across the sky causing the object you're viewing to drift out of the field view. This telescope on its mount can be aimed at a celestial object and guided with the slow-motion controls to track your target!

    Celestron AstroMaster 90 EQ Features

    • Fully multi-coated optics for bright, crisp, clean images.
    • Quick-release dovetail attachment for user-friendly set-up and storage. No tools needed!
    • Permanently mounted StarPointer finderscope projects a red laser dot onto a non-magnified viewing window for easy aiming.
    • German Equatorial Mount with setting circles - to accurately locate and track sky objects.
    • Rugged pre-assembled tripod with 1.25-inch steel tube legs with a deluxe accessory tray for convenient access to observing tools.
    • The Sky - Level 1 planetarium software with a 10,000 object database and enhanced images.


    • Optical Design: Refractor.
    • Focal Length of Eyepiece 1: 20 mm (0.79 inches).
    • Magnification of Eyepiece 1: 50x.
    • Focal Length of Eyepiece 2: 10 mm (0.39 inches).
    • Magnification of Eyepiece 2: 100x.
    • Finderscope: Built-on StarPointer.
    • Star Diagonal: 1.25-inch Erect Image Diagonal.
    • Highest Useful Magnification: 213x.
    • Lowest Useful Magnification: 13x.
    • Limiting Stellar Magnitude: 12.3.
    • Resolution (Rayleigh): 1.55 arc seconds.
    • Resolution (Dawes): 1.29 arc seconds.
    • Light Gathering Power (Compared to human eye): 165x.
    • Optical Coatings: Multi-Coated.
    • Optical Tube Length: 914 mm (36 inches).


    OPT Product Number: CE-21064  

  • specifications

    Aperture90 mm (3.5")
    Focal Length1000 mm
    Focal Ratiof/11
    Free ShippingYes
    Head DesignEquatorial
    Optical DesignDoublet Refractor
    OTA Length36"
    OTA Mount TypeCG3 Dovetail Bar
    Warranty2 Year Warranty
  • included items

    • Celestron's AstroMaster 90EQ Achromatic Refractor Telescope.
    • CG-3 Equatorial Mount/ Dovetail Bar.
    • Attached Focuser with Slow-motion Control.
    • Tripod with 1.25-inch Adjustable Steel Legs.
    • Accessory Tray/ Spreader.
    • 1.25-inch Diagonal/ Erect Image.
    • 1.25-inch Eyepiece #1/ 20 mm, 50x mag.
    • 1.25-inch Eyepiece #2/ 10 mm, 100x mag.
    • Finderscope/ StarPointer, Red Dot, Attached.
    • Two Counterweights/ 4.8 lb Each, Locking.
    • The Sky - Level 1 - PC Software.
    • 2 Year Telescope Warranty.


Product Reviews

Customer Reviews
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Jeff H.
United States United States

Lightweight (20lbs), easy assembly--clear Celestial target focus up to 180x as objects come crisp and clear; Terrestrial too.

I live in the High Sierra at 6766 feet and no street lights allowing for incredible night views on new or small crescent moon skies. My first telescope was a 4 inch reflector through Sears catalogue at age 10 in 1964--knowing the simplicity of the refractor over the reflector I bought a 4 inch Refractor in 1989 for about $600 to use with my wife and kids but gave it to the Church as the kids grew out of it in 2002. This October 2021 I bought this Celestron 90EQ at OPT last month for $289 and saved $110 over Amazon price of $398! This EQ mounted, solid/stable tripod, ease of focus 90mm/1200mm scope came perfect with lenses for 50-100x clearly on targets with 1.25 inch 20mm and 10mm lenses. I did buy a Celestron 8mm-24mm Zoom and 2x barlow for ease of tracking and enlarging viewing for family and friends to 200x. The 90EQ is easy to manually use, locate objects, and store and reassemble--this is perfect for the beginner astronomer who intends to stay a novice and enjoy a peek at the Planets or galaxies; for my kids and their families they are getting the 150mm Celestron Advanced VX 6" Refractor Telescopes for Christmas presents so they can go to 300x and with the advanced tracking extras can electronically track and locate objects as that is a generational norm for them in the computer age. My 90EQ has no aberration, objects appear crisp and clear; and, as a refractor, there is no need for Collimation or other maintenance. I will get feedback on the Celestron Advanced VX 6" Refractor Telescope after the holidays. For my wife and I, this 90EQ is easy to maneuver and track manually due to the EQ mount and laser sight device. A 5-star scope for the High Sierra Skies.

Ron R.
United States United States

Made In China , that tells it all!!!!!

I ordered a beginners scope , got a box that my wife could not move , after struggling we finally got it assembled , am “NOT” happy with the Product , but what can I expect spending a few hundred dollars , in closing , I will do my homework “BEFORE” I spend another thin dime on any star gazing stuff , my $70 binoculars give me more detail than your Celestron Astro Master 90 does at a fraction of the size and weight .

United States United States

Excellent product

Easy to setup with detailed instructions and a quality product.