Instruments of the Subaru Telescope
43 m-high cylindrical dome
The dome of the Subaru Telescope protects the telescope from the effects of airflow along the surface of the earth and atmospheric disturbance of the stellar images. Its design, a dome covered by aluminum plates, is the product of repeated experimentation.
The height of the dome is 43 m. Atop the dome is a rotating section weighing 2,000 t. This section rotates in sync with the telescope along a 40m-diameter rotation rail.