While maximum resolution is limited by the diameter or the largest baseline in an array, there is one advantage to single dishes: There is no lack of small base

While maximum resolution is limited by the diameter or the largest baseline in an array, there is one advantage to single dishes: There is no lack of small baselines. Which implies that you can only really get images of large, dim structures with a single dish. Also sensitivity is given by total collecting area, which is very competitive for a single huge dish compared to a limited number of small dishes.