Glossary term: 天文巡天
Description: 天文巡天是指通過對整個天空或某一區域進行觀測從而獲得其中的天文數據。巡天觀測通常包含在特定時間點編錄的天文物體的位置、亮度、顏色和其他屬性。大型天文巡天既能為天文研究提供數據，也有助於為大型望遠鏡提供觀測目標。
天文巡天的設計取決於其科學目標，例如以整個天空、大部分天區或僅以較小的區域為目標。覆蓋小范圍的巡天或所謂的 "鉛筆光束 "巡天可以集中更多的時間觀測天空的某一部分，因此可以比一些範圍更廣的巡天探測到更暗的天體。
天文巡天可以覆蓋電磁波譜的任意部分，如無線電波或紅外線，也可以將不同波長範圍的數據結合起來。
有些天文巡天對天空的同一區域進行重複觀測，以便對天體在天空中的移動、天體亮度的變化或超新星等瞬變天體的出現進行科學研究。 通過測量每年的位置變化，天文學家還可以利用視差計算天體的距離。另一種天文巡天是光譜巡天，測量數千（或數百萬）顆恆星、星系和其他天體的光譜。
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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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