Celestron 0.7x Reducer Lens for EdgeHD 925

Celestron EdgeHD 0.7x Focal Reducer – 9.25”

Designed specifically for the EdgeHD 9.25” optical tube, this premium 0.7x reducer shortens your focal length while preserving the flat-field performance that EdgeHD telescopes are known for. Engineered with a custom 4-element optical design, it delivers faster exposures, a wider field of view, and full compatibility with large-format sensors—ideal for astrophotographers seeking sharper, more efficient results.

Key Features

• Optimised Optical Design
  The custom 4-element layout is matched to the 9.25” EdgeHD to ensure edge-to-edge sharpness and flat-field performance across full-frame sensors.

• Faster Imaging, Wider Views
  Reduces focal ratio from f/10 to f/7, cutting exposure times by 50% while expanding the field of view by 43%—perfect for capturing larger nebulae and galaxies.

• Maintains Full Back Focus
  Unlike generic reducers, this model preserves the native back focus of the EdgeHD system, supporting existing T-adapters and imaging accessories without additional spacing complications.

• High-Quality Optics
  Features high-index, low-dispersion Lanthanum glass elements to reduce chromatic aberration and improve contrast. Fully multi-coated surfaces maximise light transmission and colour accuracy.

• Precision Engineering
  Large 60mm clear aperture ensures compatibility with full-frame sensors and off-axis guiders. All lens elements are edge-blackened to reduce internal reflections and enhance image contrast.

Built for Astrophotography

• Direct Thread-On Mounting
  Attaches securely to the 3.25" rear threads of the EdgeHD OTA for stable alignment and minimal vignetting.

• Machined Aluminium Body
  Durable CNC-machined housing ensures precise spacing of optics and long-term mechanical integrity. Includes threaded metal end caps to protect the lens assembly when not in use.

• Full Imaging System Compatibility
  Works seamlessly with Celestron’s Fastar technology and HyperStar systems, offering a wide range of focal lengths—from f/10 to f/7 and f/2 imaging (with optional accessories).

At a Glance

• Custom 4-element reducer for 9.25” EdgeHD

• Reduces focal ratio from f/10 to f/7 for faster exposures

• Maintains flat-field correction and full back focus

• 60mm clear aperture supports full-frame sensors

• Premium Lanthanum optics with full multi-coatings

• CNC-machined aluminium construction with protective caps

• Compatible with Fastar for ultra-fast f/2 imaging setups

A must-have for serious deep-sky imagers, the EdgeHD 0.7x Focal Reducer transforms your 9.25” EdgeHD into a more versatile, efficient, and high-performance imaging system—without compromising optical quality.