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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

Maunakea is a truly unique place.

Community

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

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Alignment and Phasing System Achieves Major Milestone: Advancing to Final Design Phase
September 23rd, 2024

The Alignment and Phasing System (APS) team has progressed to the Final Design stage after successfully completing the Preliminary Design Review (PDR) for the APS Optical Bench and Instrument Control System (ICS).

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TMT Primary Mirror Segment Control System PDR Successfully Completed
August 23rd, 2024

The Thirty Meter Telescope (TMT) International Observatory (TIO) successfully completed a design review for a critical component of the primary mirror segment control system.

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Successful Preliminary Design Review of TMT's Secondary Mirror Support System and Positioner Assembly
August 12th, 2024 Engineering & Technology

The TIO Secondary Mirror Support System and Positioner Assembly team successfully completed its Preliminary Design Review on 2024 July 15–17.