a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror 放物面の主鏡と双曲面の副鏡を備えている反射望遠鏡。第一反射鏡の中央の開口部を通して光線が焦点を結ぶ。
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【上位】 optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece; "Isaac Newton invented the reflecting telescope in 1668" 接眼レンズで増幅する画像を作る大きな凹面鏡で成る光学望遠鏡。
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