This refers to the natural light from the night sky, excluding moonlight. It includes starlight from the stars, zodiacal light, airglow, etc. The brightness and ratio of the light components change over time. Source : Heibonsha Encyclopedia About MyPedia Information |
夜空からくる自然光で,月の光を除いたものをいう。星による星野光のほか黄道光,大気光などの成分が含まれている。明るさや成分光の比率は時間的に変化する。
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