Thirty Meter Telescope

Astronomy's Next-Generation Observatory

TMT's Mission and Values

TMT is committed to a community model of astronomy based on the values of respect, inclusion, and mutual stewardship.

TMT's Science and Technology

TMT is an extraordinary international scientific endeavor that will revolutionize our understanding of the universe and our place within it.


Maunakea is a truly unique place.


TMT staff are part of the Hawaiʻi community and TMT firmly believes it is our kuleana (responsibility) to be active supporters of that community.

Latest From TMT

TIO Mourns the Loss of Edward Stone, its Founding Executive Director
June 11th, 2024

TIO mourns the death of its founding executive director. 

TIO Kicks Off the Preliminary Design Contract for the Tertiary Mirror Support System and Positioner Assembly
April 30th, 2024 Engineering & Technology

Recently, Advanced Mechanical and Optical Systems (AMOS) in Belgium and TIO conducted a remote kick-off meeting for the preliminary design of the Tertiary Mirror Support System and Positioner Assembly (M3SSPA).

International Collaboration Enhances the TIO Project
April 18th, 2024 TMT Partner News

A Japanese delegation recently visited the India TMT Optics Fabrication Facility (ITOFF) in Bengaluru, India, where they were introduced to the newly installed polishing equipment at the Indian site.