Gregorian telescope マイ単語帳に追加

放物面の主鏡と双曲面の副鏡を備えている反射望遠鏡

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。