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Celestron

Celestron CGEM II 800 EdgeHD 8" Schmidt-Cassegrain optic

SKU CH-2J0X-9SAZB

An 8-inch Schmidt-Cassegrain telescope on a computerized equatorial mount with 480x maximum useful magnification and 40 lb payload capacity

  • 800× light-gathering power versus unaided eye
  • 480× highest useful magnification reveals planetary detail
  • EdgeHD flat-field optics give aberration-free views across the frame
  • CGEM II equatorial mount supports 40 lb payload for vibration-free tracking
  • Multiple alignment methods including AutoAlign simplify setup

Optical Performance

The 8-inch Schmidt-Cassegrain tube uses StarBright XLT coatings to deliver over 800 times the light gathering power of the unaided eye. An aplanatic, flat-field EdgeHD design produces aberration-free images across a wide visual and photographic field. The focal plane is more than three-times flatter than a standard Schmidt-Cassegrain, keeping stars sharp to the edge of a digital sensor. Highest useful magnification reaches 480x for detailed planetary and deep-sky observation.

Mount and Alignment

The redesigned CGEM II computerized equatorial mount provides a stable platform that minimises vibrations for steady viewing and precise tracking. It supports payloads up to 40 lbs, accommodating the optical tube and imaging accessories. Multiple alignment procedures including AutoAlign, 2-Star Align and Solar System Align make setup straightforward for beginners and experienced users alike. The system is described as the lightest and most portable telescope in its class.

Astrograph-Ready Design

EdgeHD optics deliver true astrograph quality with a flat focal plane that matches the flat chip sensor of a digital camera, eliminating the out-of-focus stars at the field edge common with curved-plane designs. This optical correction works across both visual and photographic use without additional accessories. The combination of flat-field performance and a high-capacity equatorial mount creates a complete platform for serious astrophotography and visual astronomy.

Highlights

  • 800× light-gathering power versus unaided eye
  • 480× highest useful magnification reveals planetary detail
  • EdgeHD flat-field optics give aberration-free views across the frame
  • CGEM II equatorial mount supports 40 lb payload for vibration-free tracking
  • Multiple alignment methods including AutoAlign simplify setup

Specifications

No published specifications for this item yet.

Questions about this item

What is the highest useful magnification of the 8" Schmidt-Cassegrain optics?

The optical tube delivers a highest useful magnification of 480x, allowing detailed observation of planetary surfaces and deep-sky objects.

What payload capacity does the CGEM II equatorial mount support for accessories?

The mount is rated to carry up to 40 lbs, providing a stable platform for the optical tube and additional imaging equipment.

How do you perform the initial alignment on the computerized mount?

Choose an alignment method such as AutoAlign, 2-Star Align, or Solar System Align, then follow the hand controller prompts to centre each target.

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