How about a smallish wheeled rover, with temporary battery pack, powered by the nuclear battery? Guess that would be greatly limiting the power of the main device to fly. At first I was thinking you could try for a solar powered rover, but it's much farther than mars, and you pointed out the atmosphere is blocking.

I feel so lucky to live in this grand age of exploration - where computer power, materials science and advanced engineering enable us to visit our solar system.