Celestron AC 90/1000 Astromaster 90 CG-3

Description

Explore lunar and planetary targets through the Celestron AC 90/1000 Astromaster 90 CG-3, an achromatic refractor with a 90 mm aperture, 1000 mm focal length, and listed f/11 optical ratio. Its CG-3 manual German equatorial mount uses setting circles and slow-motion controls on both primary axes, while the multi-coated glass optics, StarPointer finder, 20 mm and 10 mm eyepieces, erect-image diagonal, steel tripod, accessory tray, and counterweight create a complete visual astronomy package.

The aluminum optical tube uses a 1.25-inch rack-and-pinion focuser and provides the listed 50x and 100x magnifications through the included eyepieces. The official configuration is intended for manual observation of the Moon, planets, star clusters, and other bright targets, while the CG-3 equatorial mount provides coordinate-based positioning and mechanical slow-motion adjustment without computerized alignment, GoTo electronics, or included motorized tracking.

Key Features of Celestron AC 90/1000 Astromaster 90 CG-3

This complete manual equatorial refractor combines a 90 mm aperture with a 1000 mm focal length, multi-coated glass optics, CG-3 setting circles, two-axis slow-motion controls, StarPointer finding, an erect-image diagonal, steel tripod, counterweight, and supplied eyepieces for structured visual observation.

• 90 mm achromatic refractor
• 1000 mm focal length with listed f/11 optical ratio
• Manual CG-3 German equatorial mount
• Setting circles and slow-motion controls
• Multi-coated glass optics
• 20 mm and 10 mm eyepieces
• Erect-image diagonal and StarPointer finder
• Steel tripod and counterweight assembly

Manual Equatorial Astronomy

The supplied application focuses on manual right-ascension tracking of lunar coordinates, planetary features, bright star clusters, and other suitable celestial targets, with the 1000 mm focal length providing the listed long-focus refractor configuration while the CG-3 mount supplies mechanical adjustment for controlled visual observation sessions.

Why Choose Celestron AC 90/1000 Astromaster 90 CG-3

This model is a suitable choice when a buyer wants a longer-focus 90 mm refractor with manual equatorial controls, setting circles, slow-motion adjustment, and a complete visual accessory package that supports structured observation of bright celestial targets without requiring computerized navigation or motorized tracking.

• Long 1000 mm focal length for the listed visual configuration
• CG-3 equatorial mount with setting circles and slow-motion controls
• Complete package with eyepieces, finder, tripod, diagonal, and counterweight

Celestron 2-Year Limited Warranty

The supplied product information lists a 2-year limited warranty for this telescope, and buyers should confirm the current US warranty terms, registration requirements, accessory coverage, mount support, and authorized service process before purchase because AstroMaster product availability and included components can vary between current and older regional listings.