Suppose a 4.90 m diameter telescope were constructed on the moon, where the absence of atmospheric distortion would permit excellent viewing. if observations were made using 508 nm light, what minimum separation between two objects could just be resolved on mars at closest approach (when mars is 8.0? 107 km from the moon?

The problem is asking the maximum separation between the telescope in the moon and mars. To tell you frankly, I have no idea how to calculate this by I research the answer which I will give to you and the clue that I just know is that the distance should be in kilometers and the telescopes diameter could affect the minimum separation between the two object. With that the answer would be 422,700 km