Celestron Astromaster 90 AZ Telescope

Celestron Astromaster 90 AZ Telescope

The Celestron Astromaster 90 AZ is a 90 mm refractor telescope for beginner stargazers who want to explore the Moon, the planets and star clusters. It takes just a few minutes to set up without the need for tools, so you can start observing in no time. Take a look at our other products too astronomical telescopes in our range.

Smooth alignment with Alt-Az guidance

The manual Alt-Azimuth mount is controlled by a pan handle, which features a clutch for precise alignment. By moving the handle up, down and to the sides, the object remains within the eyepiece’s field of view even as the sky moves.

Starry Night software to aid observation

Telescope users can download Celestron’s Starry Night Basic software, which helps them learn about the night sky and plan their next observing session. The software features a database of 36,000 objects, printable sky charts and 3D renderings of stars, exoplanets and galaxies.

Main features

• The fully coated 90 mm lens produces a bright and clear image of the Moon and the planets.
• The two eyepieces supplied offer 50x and 100x magnification for wide-angle and close-up views.
• Tool-free assembly means you can start making observations more quickly.
• A corner mirror makes viewing more comfortable when the object is high in the sky.
• With the Starpointer finder, locating an object in the sky is effortless.
• The height-adjustable stand is suitable for viewing whilst standing or sitting.
• The lightweight frame is easy to carry out into the garden or to the holiday cottage.

Technical specifications

• Type of telescope: refracting telescope
• Lens diameter: 90 mm
• Focal length: 1000 mm
• Aperture ratio: f/11
• Optical coating: MC
• Resolving power (Rayleigh): 1.55 arcseconds
• Resolution (Dawes): 1.29 arcseconds
• Eyepiece 1: 20 mm, 50x
• Eyepiece 2: 10 mm, 100x
• Mount type: Alt-Azimuth
• Base height: 813–1296 mm

View all Celestron products.