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写真等級 (shashintoukyuu) Japanese meaning | Kotomora
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定てい
し
た
値あたい
です
。
Photographic magnitude is a value that measures the brightness of a celestial object on a photographic plate.
Kanji 写 copy, be photographed, describe 真 true, reality, Buddhist sect 等 etc., and so forth, class (first) Related words 実じっ 視し 等とう 級きゅう Visual magnitude, measured by the human eye, as opposed to photographic magnitude which is based on photographic sensitivity.
等とう 級きゅう General term for magnitude or grade; 写真等級 is a specific type used in astronomy.
Etymology Compound of 写真 (photograph) and 等級 (magnitude, grade), referring to the magnitude of a celestial object as recorded on a photographic plate.
