Description: 分辨率或角分辨率是两个靠近的点之间可以被视为刚刚分开的最小角度。它也可以被认为是点的扩散（例如恒星），这主要是由于望远镜的光学原理。这是望远镜一个非常重要的特性，因为具有更高角分辨率的望远镜使我们能够在视觉上分辨彼此非常靠近的恒星，并看到星云和星系等扩展物体的更精细细节。角距小于分辨率的两颗恒星将显示为单个天体。望远镜的分辨率可以通过增大光学聚焦镜或透镜的尺寸来提高。此外，它还取决于波长，并且随着波长的增加而变得更差。

Related Terms:

• Telescope
• Lens
• Mirror

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

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".