Celestron Reducer Lens .7x - EdgeHD 925

Technical Details

The EdgeHD 0.7x Reducer by Celestron is meticulously crafted, featuring a unique 4-element optical design that upholds the flat-field performance of the EdgeHD 9.25 optical system. It sets itself apart from ordinary reducers by maintaining sharpness from edge to edge whilst offering ample back-focus. This allows for effortless integration with a broad spectrum of imaging accessories, all without sacrificing optical excellence.

Key Features

• Faster Optics and Wider Imaging Capability
• Advanced Optical Elements and Coatings
• Full Frame Imaging Support
• Precision Engineering and Robust Build
• Versatile Imaging System Integration

Faster Optics and Wider Imaging Capability

This reducer delivers a full f-stop increase in speed, effectively halving exposure times whilst maintaining image brightness. It also expands the field of view by 43 percent, making it ideal for capturing larger deep-sky objects such as nebulae and galaxies. The result is a more efficient and flexible imaging setup suited to a variety of astrophotography scenarios.

Advanced Optical Elements and Coatings

High-index optical elements, including extra-low dispersion and rare-earth lanthanum glass, ensure excellent contrast whilst minimising chromatic aberration. All air-to-glass surfaces are fully multi-coated to maximise light transmission and enhance colour accuracy. Blackened lens edges further reduce internal reflections, delivering improved contrast and clarity across the entire image.

Full Frame Imaging Support

With large diameter lens elements and a 60mm clear aperture, the reducer is optimised to produce a generous 42mm image circle. This makes it well suited to full-frame sensors and large CCD cameras. The design threads directly onto the 3.25" rear cell of the EdgeHD optical tube, reducing mechanical vignetting and supporting the use of off-axis guiders and other advanced imaging accessories.

Precision Engineering and Robust Build

The reducer is housed in CNC machined aluminium, ensuring precise alignment and spacing of the optical elements for consistent performance. Its durable construction is complemented by threaded metal covers on both ends of the lens assembly, protecting the optics from dust and scratches when not in use.

Versatile Imaging System Integration

When combined with the Fastar capability of the EdgeHD system, this 0.7x reducer provides an ideal intermediate focal length between the native f/10 configuration and optional f/2 imaging setups. This versatility allows astrophotographers to tailor their system for different targets and conditions, making the EdgeHD platform one of the most complete imaging solutions available in its class.

Top Three Features

Faster Optics and Wider Imaging Capability: This feature significantly increases the speed of your optics, effectively halving exposure times while maintaining image brightness. It also expands the field of view by a substantial 43 percent, making it perfect for capturing larger deep-sky objects such as nebulae and galaxies. This results in a more efficient and flexible imaging setup that can adapt to a variety of astrophotography scenarios.

Advanced Optical Elements and Coatings: The reducer is equipped with high-index optical elements, including extra-low dispersion and rare-earth lanthanum glass, which ensure excellent contrast while minimising chromatic aberration. All air-to-glass surfaces are fully multi-coated to maximise light transmission and enhance colour accuracy. This feature significantly improves contrast and clarity across the entire image.

Full Frame Imaging Support: With large diameter lens elements and a 60mm clear aperture, the reducer is optimised to produce a generous 42mm image circle. This makes it well suited to full-frame sensors and large CCD cameras. The design threads directly onto the 3.25" rear cell of the EdgeHD optical tube, reducing mechanical vignetting and supporting the use of off-axis guiders and other advanced imaging accessories.

Our expert's opinion about the Celestron Reducer Lens .7x - EdgeHD 925

The Celestron Reducer Lens .7x - EdgeHD 925 is a meticulously crafted piece of equipment that stands out in its class. With its unique 4-element optical design, it maintains sharpness from edge to edge while offering ample back-focus. This allows for effortless integration with a broad spectrum of imaging accessories, all without sacrificing optical excellence. The reducer is also equipped with high-index optical elements and coatings, ensuring excellent contrast and colour accuracy. With its full-frame imaging support and robust build, it's a versatile tool for any astrophotographer.