>> Atmospheric attenuation You start with the adaptive optics used in many telescopes. For whatever angular resolution an earth-based telescope can accomplish

>> Atmospheric attenuation You start with the adaptive optics used in many telescopes. For whatever angular resolution an earth-based telescope can accomplish, that same tech can probably also focus a laser beam to a similar degree. (Adaptive optics largely started from laser weapon programs, only later being used for astronomy.) https://en.wikipedia.org/wiki/Boeing_YAL-1 https://en.wikipedia.org/wiki/Boeing_YAL-1