单词	coronagraph
释义	coronagraph /kəˈrəʊnəɡrɑːf / noun An instrument that blocks out light emitted by the sun’s actual surface so that the corona can be observed.In other words, a coronagraph produces an artificial solar eclipse.... Their coronagraph - which created a false eclipse by blocking the visible disk of the Sun from the field of view - allowed them to spy on the solar atmosphere. In addition to its suite of cameras, Skylab was stocked with tons of scientific equipment, including coronagraphs, spectrometers, and ultraviolet and X-ray telescopes.
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