angular resolution

Angular resolution refers to the ability of an optical system, such as a telescope or microscope, to distinguish between two closely spaced objects. It is measured in angles, often in arcseconds. A higher angular resolution means the system can separate objects that are close together more clearly. For example, in astronomy, a telescope with better angular resolution helps us see distant stars or planets as distinct points of light rather than blurred blobs. This quality is crucial for studying fine details in images, allowing for clearer observations in various fields of science.