Celestron 0.7x Reducer Lens for EdgeHD 800

Celestron EdgeHD 0.7x Focal Reducer – 8”

Unlock the full imaging potential of your Celestron 8” EdgeHD with this dedicated 0.7x focal reducer. Designed with a precision 4-element optical layout, it shortens your focal length for faster exposures and a wider field of view, all while preserving the acclaimed flat-field performance of the EdgeHD system. Perfect for deep-sky astrophotographers, it also ensures generous back focus for a variety of camera and accessory setups.

Key Features

• Precision 4-Element Optical Design
  Specifically engineered for the 8” EdgeHD OTA, this reducer maintains edge-to-edge sharpness and eliminates field curvature—ideal for APS-C sensors.

• Wider Field, Faster Imaging
  Reduces your focal ratio from f/10 to f/7, cutting exposure times in half and expanding your field of view by 43%—perfect for capturing larger deep-sky targets like galaxies and nebulae.

• Ample 105mm Back Focus
  Offers substantial back-focus to accommodate DSLRs, CCD/CMOS cameras, filter wheels, and off-axis guiders. Compatible with existing Celestron T-adapters and EdgeHD imaging accessories.

Optical Quality

• Lanthanum Glass Elements
  Incorporates exotic, rare-earth Lanthanum optics to enhance contrast and minimise chromatic aberration, even in high-resolution imaging.

• Fully Multi-Coated Surfaces
  All air-to-glass interfaces are treated with advanced coatings to ensure high light transmission and colour fidelity across the visual spectrum.

• Edge-Blackened Optics
  Internal reflections are reduced to a minimum thanks to precision-blackened lens edges, resulting in improved contrast and image clarity.

Designed for Imaging

• Optimised for APS-C Sensors
  Produces an illuminated image circle ideal for most DSLR and dedicated astro cameras, including Celestron Nightscape.

• Intermediate Focal Solution
  Complements the EdgeHD system’s flexibility by providing a middle ground between native f/10 and ultra-fast f/2 imaging with a HyperStar system (sold separately).

Mechanical Excellence

• CNC-Machined Aluminium Housing
  Delivers exceptional durability and precise spacing for optical elements, maintaining collimation and performance over time.

• Protective End Caps
  Includes metal-threaded covers to shield both ends of the lens assembly from dust, moisture, and accidental scratches during transport or storage.

• Direct Threaded Mounting
  Attaches securely to the rear of the 8” EdgeHD via 2” threads for a firm, aligned fit with minimal risk of tilt or flexure.

Summary

• Custom 4-element design matched to 8” EdgeHD optics

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

• 105mm back focus supports full imaging setups

• Optimised for APS-C sensors

• Premium Lanthanum glass and multi-coated surfaces

• CNC-machined housing with protective caps

• Bridges the gap between native and HyperStar imaging speeds

Turn your 8” EdgeHD into a highly adaptable imaging platform with this premium focal reducer—designed to meet the needs of both backyard imagers and serious astrophotographers alike.