Celestron Reducer Lens .7X - EdgeHD 800

Technical Details

The EdgeHD Reducer from Celestron boasts a bespoke 4-element optical design, meticulously crafted to maintain the flat-field performance inherent in the EdgeHD optical system. This is no ordinary reducer; it ensures edge-to-edge sharpness while providing ample back-focus. This feature enables astrophotographers to incorporate a broad array of imaging accessories, all without sacrificing image quality. It facilitates quicker imaging and a broader field of view.

Key Features

• 4-element optical design
• Ample back-focus
• 0.7x reduction factor
• High-index optical elements
• 105mm of back-focus

Advanced Optical Glass and Coatings

The reducer incorporates high-index optical elements, including extra-low dispersion and rare-earth lanthanum glass, to deliver high contrast and minimise chromatic aberration. All air-to-glass surfaces are fully multi-coated to maximise light transmission and improve colour accuracy. Additionally, blackened lens edges help reduce internal reflections, further enhancing contrast and overall image clarity.

Optimised for Modern Imaging Setups

With 105mm of back-focus, the EdgeHD Reducer provides ample space for cameras and accessories, including T-adapters and other Celestron imaging components. It is optimised for APS-C sized sensors, making it well suited to many DSLR and dedicated astronomy cameras whilst maintaining a large, well-illuminated field.

Precision Engineering and Build Quality

The housing is constructed from CNC machined aluminium, ensuring precise spacing and alignment of the optical elements. This robust mechanical design enhances durability and maintains consistent optical performance. Threaded metal covers are included on both ends of the lens assembly to protect against dust and scratches when not in use.

Versatile Imaging Capability

When paired with the Fastar-compatible EdgeHD optical system, the 0.7x reducer provides an ideal intermediate focal length between the native f/10 or f/11 configuration and the ultra-fast f/2 Hyperstar setup. This versatility allows users to adapt their telescope for different imaging scenarios, making the EdgeHD system one of the most complete and flexible imaging solutions available in its class.

Top Three Features

• 4-element optical design: The bespoke 4-element optical design of the Celestron Reducer Lens .7x - EdgeHD 800 ensures edge-to-edge sharpness. This meticulous design maintains the flat-field performance inherent in the EdgeHD optical system, delivering high-quality images. It allows astrophotographers to incorporate a broad array of imaging accessories without sacrificing image quality.
• Ample back-focus: The Celestron Reducer Lens .7x - EdgeHD 800 provides ample back-focus, a feature that enables astrophotographers to incorporate a broad array of imaging accessories. This feature facilitates quicker imaging and a broader field of view, enhancing the overall imaging experience.
• 0.7x reduction factor: The 0.7x reduction factor of the Celestron Reducer Lens .7x - EdgeHD 800 makes the optical system one full f-stop faster. This reduces exposure times by half whilst capturing the same level of brightness, significantly enhancing efficiency when imaging faint deep-sky objects.

Our expert's opinion about the Celestron Reducer Lens .7x - EdgeHD 800

The Celestron Reducer Lens .7x - EdgeHD 800 is a meticulously crafted piece of equipment that astrophotographers will find invaluable. With its 4-element optical design, ample back-focus, and 0.7x reduction factor, it promises to deliver high-quality images while reducing exposure times. The reducer is optimised for APS-C sized sensors, making it well suited to many DSLR and dedicated astronomy cameras. Its robust mechanical design enhances durability and maintains consistent optical performance, making it a reliable choice for any astrophotography setup.