angular resolution limit

Angular resolution limit refers to the smallest angular separation between two objects that a telescope or sensor can distinguish as separate entities. It's like the faint tip of a pencil seen from a distance; if two pencils are too close together, they appear as one. Factors such as the instrument's size, wavelength of light, and design determine this limit. A higher resolution allows us to see finer details and distinguish objects that are very close together in the sky or an image. Essentially, it's a measure of an instrument's ability to resolve or separate objects in the field of view.