In exactly the same way that a camera can take a photograph of a star, which (for all but the Sun) is an infinitesimally small point of light. As long as the li

In exactly the same way that a camera can take a photograph of a star, which (for all but the Sun) is an infinitesimally small point of light. As long as the light intensity is higher than the background noise, it will render as a smeared out blob[1] due to diffraction. [1] an Airy disk: https://en.wikipedia.org/wiki/Airy_disk https://en.wikipedia.org/wiki/Airy_disk