Celestron AstroMaster 90EQ Telescope

  • 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.


  • Sale
  • Regular price $403.95
  • $269.95
  • You save: $134.00 (33%)

More on the Way in 14 - 28 Business Days

Free Shipping
Add to Wishlist
Already have gear? Trade it in for cash or new equipment.

Accessories Added

OPT Telescope Expert

Want Help?

Ask Our Telescope Experts


Celestron AstroMaster 90EQ Telescope

The Celestron AstroMaster 90EQ Telescope is a 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  


Aperture90 mm (3.5")
Focal Length1000 mm
Focal Ratiof/11
Free ShippingYes
Head DesignEquatorial
Optical DesignDoublet
OTA Length36"
OTA Mount TypeCG3 Dovetail Bar
Telescope SeriesCelestron AstroMaster
Warranty2 Year Warranty


  • 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.