Glossary term: 星轨
Description: 在天体摄影中，星轨是使用超长曝光时间拍摄的夜空图像。这是相机随地球旋转的结果，星星在夜空中的运动会在图像中留下痕迹。星轨显示了地球的昼夜运动，如果相机对准天体北极或南极，星轨就会以天空中的极点位置为中心形成半圆。此外，星轨图案还可用于确定观测者的纬度。星轨图像也可以通过在一段时间内进行一系列短时间曝光，然后在照片编辑软件中将它们堆叠（叠加）在一起制作而成。
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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
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Related Media
埃特纳火山上的星轨和熔岩羽流，于 2021 年 2 月，意大利，达里奥-吉安诺贝雷（ Dario Giannobile）摄
Credit: Dario Giannobile/IAU OAE
License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons
石阵与星环，巨石阵上方的星轨，作者：Till Credner，德国
Credit: Till Credner/IAU OAE
License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons
半日北极星曝光图，作者：来自意大利的法布里齐奥-梅兰德里
Credit: 法布里齐奥-梅兰德里/国际天文学联合会教育办公室
License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons
