The environment surrounding the Subaru Telescope

Razor-sharp astronomical imaging available nowhere else on Earth

Stars twinkle because the earth's atmosphere causes their starlight to waver. The air surrounding the summit area of Maunakea, where the Subaru Telescope is located, contains little water vapor, while the air currents over the peak are highly stable. As a result, the location is blessed with excellent seeing*, with image perturbations of just 0.5 arcseconds or less. The environment atop Maunakea offers razor-sharp astronomical imaging available nowhere else on Earth.
* Seeing is an index of the degree to which the atmosphere is free of turbulence that distorts images of stars. The lower the number of arcseconds (of perturbation), the better the environment is for astronomy.