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Celestron 8 inch EdgeHD optical tube, silver finish, CGE dovetail bar, 9x50 finderscope, 1.25 inch 90 degree diagonal

Celestron

Celestron 8" EdgeHD OTA StarBright XLT CGE Dovetail

SKU CH-C4YP-M0EXV

An 8-inch Schmidt-Cassegrain optical tube with EdgeHD flat-field optics, StarBright XLT coatings, a 9x50 finderscope, and a 1.25-inch 90-degree mirror diagonal on a CGE dovetail bar

  • Aplanatic Schmidt optics deliver sharp, aberration-free images across the entire field
  • StarBright XLT coatings maximise light throughput for brighter, higher-resolution views
  • 9x50 finderscope enables quick, accurate object location for efficient observing
  • 25" 90° mirror diagonal provides comfortable, ergonomic viewing during long sessions
  • Flat focal plane supports large CCD chips with pinpoint stars to the edge

8" EdgeHD Optical Tube Assembly

The 8-inch EdgeHD optical tube assembly uses an aplanatic Schmidt-Cassegrain design to produce a flat, aberration-free focal plane across a wide visual and photographic field. It is built for astrophotographers and visual observers who want sharp stars to the edge of large CCD chips without field curvature.

Sustained imaging performance

The optical system delivers a focal plane more than three times flatter than a standard Schmidt-Cassegrain, so resolution and limiting magnitude hold up across the full frame during long exposures. StarBright XLT coatings maximize light throughput, keeping images bright and detailed even in low-light conditions.

CGE dovetail and accessories

A CGE-format dovetail slide bar allows direct mounting on compatible equatorial mounts without extra hardware. The package includes a 9x50 finderscope for precise object location and a 1.25-inch 90-degree mirror diagonal that provides a comfortable viewing angle for extended sessions.

Highlights

  • Aplanatic Schmidt optics deliver sharp, aberration-free images across the entire field
  • StarBright XLT coatings maximise light throughput for brighter, higher-resolution views
  • 9x50 finderscope enables quick, accurate object location for efficient observing
  • 25" 90° mirror diagonal provides comfortable, ergonomic viewing during long sessions
  • Flat focal plane supports large CCD chips with pinpoint stars to the edge

Specifications

No published specifications for this item yet.

Questions about this item

How much power does the 8" EdgeHD OTA draw during an all-night imaging session?

The optical tube assembly itself has no electrical components, so it draws no power; only your mount, camera and accessories consume electricity.

Which mount dovetail standard must I already own to attach this tube?

It comes with a CGE-format dovetail slide bar, so you need a mount that accepts a CGE dovetail saddle or an appropriate adapter plate.

Will my existing 1.25" eyepieces and camera adapters work with the included diagonal?

Yes — the supplied 90-degree mirror diagonal accepts standard 1.25" barrels, so current 1.25" eyepieces and nosepieces slide straight in.

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