Celestron Reducer Lens .7x - EdgeHD 800
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Celestron Reducer Lens .7x - EdgeHD 800

The 0.7X reducer lens for 8-inch Edge HD optics allows for both shorter exposure times and a wider photographic field of view.

The 0.7X reducer lens for 8-inch Edge HD optics allows for both shorter exposure times and a wider photographic field of view. Celestron's EdgeHD optics require a dedicated focal reducer because the light cone exiting the telescope has already been flattened by the EdgeHD optics. Standard SCT type focal reducers should not be used with EdgeHD optics. Another important consideration is that this reducer is much larger and heavier than a standard SCT reducer. According to Celestron this item weighs 0.8 pounds. Using this reducer in combination with a filter wheel and CCD camera will definitely require a counterweight on the front end of the optical tube.

Celestron's EdgeHD reducers feature a custom 4 element optical design engineered to maintain the flat-field performance of the award winning EdgeHD optical system. Unlike generic reducers, these premium reducers provide substantial back focus to accommodate an assortment of imaging accessories.

EdgeHD reducers offer high index optical elements, including extra low dispersion, exotic Lanthanum elements, which provide high contrast viewing while minimizing chromatic aberration. All air to glass lens surfaces feature multiple layers of coating for maximum light transmission and color correction and contain blacken edges to minimize internal reflection and maximize image contrast.

These reducers are produced using a computer assisted CNC machined aluminum housing for precise spacing and alignment of optical elements. Threaded metal covers on the lens assembly protect your investment from dust and scratches.

Performance

  • Design: 4-element optical layout designed specifically for the EdgeHD 8" to maintain the flat-field performance of the Edge HD optical design
  • 105mm of back focus: Provides generous back focus to accommodate additional accessories and a wide variety of cameras. Also allows use of existing T-adapters for EdgeHD 800 and other Celestron imaging accessories
  • One full F-Stop faster than f/10: Reduces the exposure time by one-half to capture the same brightness of object
  • Increase field of view by 43%: Better for capturing wide field images of larger galaxies and nebulae

Glass

  • Lanthanum Glass Elements: EdgeHD reducer uses "rare earth" Lanthanum glass elements for clear, high contrast viewing while minimizing chromatic aberration
  • Fully multi-coated lens elements: All air-to-glass surfaces have multiple layers of coating for maximum light transmission and color correction
  • Blacken edges: All lens elements have blacken edges to minimize internal reflection and maximize contrast

Full Frame Design

  • Optimized for APS-C sized sensors: Including most DSLR cameras and Nightscape CCD cameras

Mechanical Design

  • Machined aluminum housing: Computer assisted CNC machined aluminum housing for precise spacing and alignment of the optical elements.
  • Threaded metal covers for both ends of the lens assembly: To protect your investment from unwanted dust and scratches.

Versatility

  • Provides and intermediate focal length between EdgeHD's native f/10 (or f/11) and the optional Hyperstar accessory at f/2, making the EdgeHD the most complete imaging system in its price range

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Our price: $299.95

Normally ships within 7-10 days.
 


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