Celestron AstroMaster 90EQ Refractor Telescope

Celestron AstroMaster 90EQ Refractor Telescope

Classic Refractor Design with Precise Equatorial Control

Explore the Moon, planets, and star clusters with confidence using the Celestron AstroMaster 90EQ. This classic 90mm refractor offers excellent image clarity and contrast, paired with a precision German equatorial mount for smooth and accurate celestial tracking. Ideal for both new astronomers and those wanting to level up from a beginner scope.

Key Features

• 🔭 90mm Refractor Telescope – Bright, sharp views of the Moon, Jupiter, Saturn, and other night-sky favourites.

• ⚙️ German Equatorial Mount – Dual-axis slow-motion controls for accurate positioning and tracking in RA and DEC.

• 🔧 No-Tool Setup – Quick assembly so you can start observing straight away.

• 🪐 Two Eyepieces Included – 20mm (50x) for wide views and 10mm (100x) for high magnification.

• 🌍 Erect Image Diagonal – Produces correctly oriented images for both terrestrial and astronomical use.

• 🎯 StarPointer™ Red Dot Finderscope – Quickly centre celestial targets in your field of view.

• 🧰 Full-Height Steel Tripod – Adjustable with accessory tray for stable and convenient viewing.

Smooth Tracking for Serious Observers

The CG-3 German equatorial mount gives you fine control over your telescope’s movement, making it easier to follow celestial objects across the sky. With setting circles and precision knobs, you can make small adjustments in Right Ascension and Declination for steady tracking during extended observing sessions.

Learn the Sky with Starry Night Software

Every AstroMaster 90EQ includes Celestron’s Starry Night Basic Edition, a powerful planetarium software package that helps you explore and understand the night sky with:

• A 36,000-object celestial database

• 3D views of planets, stars, and galaxies

• Printable star charts

• Built-in observing planning tools

Also compatible with the SkyPortal app for a more interactive mobile experience.

Specifications

Optical System

• Optical Design: Refractor

• Aperture: 90mm (3.54")

• Focal Length: 1000mm (f/11)

• Eyepieces:

  • 20mm (50x)

  • 10mm (100x)

• Star Diagonal: 1.25" Erect Image Diagonal

• Finderscope: StarPointer™ Red Dot

• Max Useful Magnification: 213x

• Limiting Magnitude: 12.3

• Resolution:

  • Rayleigh: 1.55 arc seconds

  • Dawes: 1.29 arc seconds

• Light Gathering Power: 165x

• Coatings: Fully Coated Glass Optics

Mount & Tripod

• Mount Type: Manual German Equatorial (CG-3)

• Slow Motion Controls: Yes – RA and DEC

• Tripod Height Range: 812.8mm – 1295.4mm (32" – 51")

• Tripod Leg Diameter: 31.75mm (1.25") steel

• Accessory Tray: Included

Dimensions & Weight

• Optical Tube Length: 770mm (30.3")

• Total Kit Weight: 13.7 lbs (6.21 kg)

Included in the Box

• Optical Tube

• Preassembled Tripod & CG-3 Mount

• 20mm and 10mm Eyepieces

• Erect Image Diagonal (1.25")

• StarPointer™ Red Dot Finderscope

• Manual

• Starry Night Software Download

Important Safety Notice

Never observe the Sun without a certified solar filter. Serious or permanent eye damage may result. Always supervise telescope use with children.

Who Is This For?

The Celestron AstroMaster 90EQ is perfect for stargazers who want the clarity of a refractor combined with the precision of an equatorial mount. Whether you're scanning lunar features, tracking planets, or enjoying daytime views of distant landscapes, this telescope delivers dependable performance in a classic package.