Fluorite triplet TakahashiTokyo, Japan The FCT-65D is a low-dispersion Fluorite Triplet refractor. It has a 400mm focal length and a f/6.2 focal ratio, and a high Strehl ratio of .98. It also comes with a camera-angle adjuster and can be equipped with different Takahashi reducers, as well as dovetail plates and aluminum rings to accompanyContinue reading “Fall in love with new astronomy products this month”
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