Muana Kea also has a (permanent?) tropical inversion layer. This means a layer of warm air some way below the summit. What it looks like in practice is a very t

Muana Kea also has a (permanent?) tropical inversion layer. This means a layer of warm air some way below the summit. What it looks like in practice is a very thick layer of dirty clouds topped by pristine, cloudless air. Additionally, Hawaii has strict rules about light pollution, and street lights designed not to disrupt the telescopes.