Description: 測光（光度測量）一詞源於希臘語 phōs，意為光，metro 意為測量。雖然測光的類型有很多種，但基本方法是測量各種天體輻射的光強度（光子）。天體髮出的光會通過專門的濾光片（稱為通帶），然後被數碼設備（如照相機 CCD）捕獲。不同的通帶覆蓋不同的波長範圍，可能包括紅外線、可見光和紫外線。天文望遠鏡通常有濾光片組，稱為測光系統。一些常見的系統包括 UBVRI、JHK 和 ugriz。通過測光可以測量天體的不同物理特性，例如溫度、顏色和亮度變化。

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

This is an automated transliteration of the simplified Chinese translation of this term

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