For more information about TMT Hawaii, please visit and
Tmt comp background

Image Gallery

< All Images

Enclosure 2020 04 06 at 15.58.55

Cross-section view of TMT Enclosure

April 23rd, 2020

Credit: TMT International Observatory

The TMT Enclosure System is a dome structure housing the telescope. The three principal enclosure moving components are the rotating base, cap and shutter structures. Combined rotation of the rotating base and cap provides a range of required azimuth and zenith angles. The shutter is a rotating structure enabling opening and closing of the telescope aperture.