Celestron

AstroMaster 90AZ Refractor

SKU: 21063


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  • Regular price $319.95

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We no longer carry the AstroMaster. Instead we recommend the new Celestron StarSense Explorer Series as a superior product.


  • 90mm refractor telescope with fully coated glass optics and a lightweight frame.
  • Observe in no time with a quick and easy, no-tool setup
  • Accessories include: two eyepieces (20mm and 10mm), erect image star diagonal, and a finderscope.
  • Panning handle Alt-Az control with clutch for smooth and accurate pointing.
  • Adjustable height tripod
  • 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

Discover our Solar System with the Celestron AstroMaster 90AZ! You’ll be ready to observe in minutes thanks to the quick and easy no-tool setup. The 90AZ provides bright, clear images of the Moon, planets, star clusters, and more for great nighttime viewing.

Manual Alt-Azimuth telescope

Navigate the sky with a pan handle Alt-Az control with clutch for smooth and accurate pointing. Move the clutch in an up/down, left/right fashion to track your object in the eyepiece.

Accessories Included

Accessories include a 20mm and 10mm eyepiece, an erect image diagonal, and a Starpointer 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. 

Optical Design Refractor
Aperture 90mm (3.54")
Focal Length 1000mm (39")
Focal Ratio f/11
Focal Length of Eyepiece 1 20mm (.8")
Magnification of Eyepiece 1 50x
Focal Length of Eyepiece 2 10mm (.4")
Magnification of Eyepiece 2 100x
Barlow Lens Not Included
Finderscope StarPointer™ red dot finderscope
Star Diagonal Erect Image Diagonal - 1.25"
Optical Tube Aluminum
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-5 Dovetail bar
Mount Type Manual Alt Azimuth
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 (3447.3 g)
Slew Speeds Manual
Dovetail Compatibility CG-5 saddle plate
Software Starry Night Basic Edition | SkyPortal App
Total Kit Weight TBD
Included Items Optical tube | Tripod and mount (preassembled) | 20 mm eyepiece | 10 mm eyepiece | Red-dot finderscope | Erect image 90° diagonal | Manual

 

Barcode: 050234210638