英语词汇“prime focus”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	prime focus
释义	prime focus prime focus n (Astronomy) the focal point of the objective lens or primary mirror of a telescope Translations fuoco primario prime focus prime focus The focal plane in which the image of the primary mirror or objective lens of a telescope forms, in the absence of other optical components. prime focus [′prīm ′fō·kəs] (optics) The position in a reflecting telescope at which light from celestial objects is focused by the main mirror, located on the axis of the mirror near the open end of the tube.
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