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===== Reducer ===== ----A reducer is similar to a barlow, but works the opposite way. It decreases your focal length and therefore your focal ratio, for example turning your slow f/10 schmidt-cassegrain into a faster f/6.3 imaging system. You can get a reducer for just about any telescope and many of them have field flatteners built in, so if you have a long focal length refractor they are an ideal accessory.
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