![]() Large diameter lens elements, up to 60 mm clear aperture, ensure that the optimized image circle remains at a generous 42 mm for use with large CCD sensors. How Focal Reducers Work 2.1 Some Basic Definitions 2.2 Using a Focal Reducer at the Working Distance 2.3 Adjusting the Reduction Factor of a Focal Reducer 3.Types of Focal Reducers 3.1 Overview 3.2 Focal Reducers for Refractors 3.3 Focal Reducers for Compound Telescopes 3. 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. 0.5x focal reducer effectively halves the focal length of a telescope, enabling lower magnification, a wider field of view, and shorter exposure times for astrophotography Threads into eyepieces, camera adapters, and other accessories with standard 1. Unlike generic reducers, our premium reducers provide substantial back focus to accommodate an assortment of imaging accessories.ĮdgeHD reducers offer high index optical elements, including extra low dispersion, exotic Lanthanum elements, which provide high contrast viewing while minimizing chromatic aberration. A f/10 focal ratio now achieves a f/6.3, while an f/11 focal ratio now achieves a f/7. Sky-Watcher GoTo Dobsonian and EQ Mount SaleĬelestron's new EdgeHD reducers feature a custom 5 element optical design engineered to maintain the flat-field performance of our award winning EdgeHD optical system. Explicitly designed for Celestron Schmidt-Cassegrain telescopes, this unique lens reduces your telescope’s focal length and f/ ratio by 37, turning your long focal length telescope into a fast, short focal length instrument. ![]() ![]() Color Correction & Minus Violet Filters.Correctors, Focal Reducers & Flatteners Shop for focal reducers, coma correctors, and field flatteners from your favorite brands Tele Vue, Baader, Antares, and Celestron available at Agena AstroProducts.
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