Discover our Solar System with the Celestron AstroMaster 90EQ! You’ll be ready to observe in minutes thanks to the quick and easy no-tool setup. The 90EQ provides bright, clear images of the Moon, planets, star clusters, and more for great nighttime viewing.
Manual German equatorial mount with setting circles - to locate and track sky objects
Adjustable, full height steel tripod with deluxe accessory tray
Quick and easy no-tool setup
Accessories include a 20mm and 10mm eyepiece, erect image diagonal, and a finderscope
Download Starry Night Basic Software with a 36,000 object database, printable sky maps and enhanced images including 3D renderings of stars, exoplanets, and galaxies
Manual German Equatorial telescope
The AstroMaster mount comes with two slow motion control knobs that allow you to make fine pointing adjustments to the telescope in both Right Ascension and Declination axes, also referred to as RA and DEC.
Accessories Included
Accessories include a 20mm and 10mm eyepiece, erect image diagonal, and a finderscope. The two eyepieces offer different magnifications for low and high powered views.
Starry Night Software
Download Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond.
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Custom Specification
Product Specifications
Optical Tube Info
Optical Design:
Refractor
Aperture:
90mm (3.54")
Focal Length:
1000mm (39.37")
Focal Ratio:
f/11
Focal Length of Eyepiece 1:
20mm (.78")
Magnification of Eyepiece 1:
50x
Focal Length of Eyepiece 2:
10mm (.4")
Magnification of Eyepiece 2:
100x
Barlow Lens:
Not Included
Finderscope:
Built-on StarPointer™ red dot finderscope
Star Diagonal:
Erect Image Diagonal - 1.25"
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:
914mm (36")
Optical Tube Diameter:
TBD
Optical Tube Weight:
TBD
Dovetail:
CG-3 Dovetail bar
Mount Info
Mount Type:
CG-3 Equatorial
Height adjustment range (includes mount and tripod):
812.8mm - 1295.4mm (32" - 51")
Tripod Leg Diameter:
31.75mm (1.25") steel
Accessory Tray:
Yes
Tripod Weight:
7.6 lbs (3.44 kg)
Slew Speeds:
Manual
Dovetail Compatibility:
CG-3 saddle plate
Software:
Celestron Starry Night Basic Edition Software and SkyPortal App
Total Kit Weight:
TBD
Included Items:
Optical tube Tripod and mount (preassembled) 20mm and 10mm eyepiece Red-dot finderscope Manual
Solar Warning
Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.
