Celestron 70AZ Astro Master Telescope Review

celestron astromaster 70az

The Celestron AstroMaster 70AZ is a refractor telescope with a 70mm aperture and in mounted on an altazimuth mount. It’s an entry level telescope that has several nice features that make it a great option for the beginner astronomer.

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The package contains the optical tube, the steel tube legs tripod with the accesory tray, the altazimuth mount, 2 eyepieces (20mm and 10mm), the finderscope, the correct image prism and a copy of the SkyX software.

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as of June 20, 2024 1:33 am
Celestron AstroMaster 70AZ Review Card
  • Manufacturer - 9.9/10
  • Optics - 9.5/10
  • Value - 9.6/10


A great telescope for beginners. The 70mm aperture allow you to see crisp images of the Moon along side other popular star gazing objects like Jupiter with it’s bands and moons or Saturn with it’s rings.

It’s main features would be that it has permanently mounted star pointer and erect image optics which makes it useable for terrestrial viewing as well. But I would argue that the star pointer is not nearly as helpful as a finder scope.

One strong point in favor of the 70AZ Astro Master and the Astron Master telescopes in general is the better built mount and tripod. You have less vibrations with the Astro Master telescopes than with the ones from the Power Seeker range.

celestron astromaster 70az
Interesting telescope packed with new features and at a reasonable price

Full Technical Specifications

Optical DesignRefractor
Aperture (mm)70 mm (2.76 in)
Focal Length900mm (35 in)
Focal Ratio13
Focal Length of Eyepiece 1 (mm)20 mm (0.79 in)
Magnification of Eyepiece 145 x
Focal Length of Eyepiece 2 (mm)10 mm (0.39 in)
Magnification of Eyepiece 2 90 x
FinderscopeBuilt-on StarPointer
Star DiagonalErect Image Diagonal – 1.25″
Mount TypeAltazimuth
Tripod1.25″ steel tube legs
Highest Useful Magnification165 x
Lowest Useful Magnification10 x
Limiting Stellar Magnitude11.7
Resolution (Rayleigh)1.99 arc seconds
Resolution (Dawes)1.66 arc seconds
Light Gathering Power (Compared to human eye)100 x
Apparent Field of View1.1 °
Linear Field of View (@1000 yds)58 ft (18 m)
Optical CoatingsFully Coated
Optical Tube Length36 in (914 mm)
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