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.
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