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Thirty Meter Telescope

Astronomy's Next-Generation Observatory

Explore the latest news, events and announcements from the TMT International Observatory

January 19th, 2022 • News
Update on TMT High Quality Optics Polishing at Coherent
January 19th, 2022 • Photograph
Shipping of six additional TMT finished roundels at Coherent facility in California, De...
January 19th, 2022 • Collage
Coherent’s hands-on training in December 2021
January 27th, 2022 • Education & Outreach
TMT Lunchtime talk
December 14th, 2021 • Press Coverage
Precise Insights into the Supermassive Black Hole in the Milky Way’s Heart
December 9th, 2021 • Associate Project Manager Blog
Audio Universe: Tour of the Solar System
November 22nd, 2021 • News
TMT Appoints Dr. Fengchuan Liu as Project Manager
November 18th, 2021 • News
TMT was at AstroDay in Kona
November 5th, 2021 • News
US Extremely Large Telescope Program Supports Vision of Decadal Survey
November 4th, 2021 • News
TMT’s Statement on Astro2020 Decadal Survey
November 4th, 2021 • News
Astro2020 Decadal Survey Released
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November 4th, 2021 • Photograph
TMT: a sharp eye on the sky
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September 8th, 2021 • Photograph
TMT polished roundel inspection - August 2021
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October 13th, 2021 • Photograph
TMT Segment Support Assembly below hexagonal glass segment
October 21st, 2021 • News
TMT’s Secondary and Tertiary Mirrors Coating Facility Passes Conceptual Design Review
October 13th, 2021 • Associate Project Manager Blog
TMT Segment Support Assemblies from India
October 11th, 2021 • Associate Project Manager Blog
TMT ਟੀਮ ਨੰ ਮਿਲੋ (interview in Punjabi)
October 1st, 2021 • News
TMT successfully passes a formal milestone review for the planning of its future opera...
September 8th, 2021 • News
Production of the TMT M1 mirrors ramps up at Coherent Inc.
August 30th, 2021 • Associate Project Manager Blog
July 22nd, 2021 • Associate Project Manager Blog
Hexing Glass for TMT
July 1st, 2021 • Associate Project Manager Blog
Meet the TMT Team - Interview with Saeko Hayashi
June 23rd, 2021 • News
Update on TMT Primary Mirror Production in the Bay Area
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June 23rd, 2021 • Photograph
Packing TMT finished roundel at Coherent facility, in June 2021
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June 23rd, 2021 • Photograph
TMT M1 polished roundel produced at Coherent facility in California – June 2021.
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June 23rd, 2021 • Photograph
Storage of TMT polished roundels
June 3rd, 2021 • News
TMT Laser Guide Star Facility Passes Design Milestone
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June 3rd, 2021 • Artwork
TMT Laser Guide Star Facility (LGSF) mechanical layout
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June 3rd, 2021 • Artwork
TMT LGSF Top-End figure
June 2nd, 2021 • Associate Project Manager Blog
Cooling TMT's Adaptive Optics System
June 1st, 2021 • News
TMT Metrology Equipment Arrives in California
May 27th, 2021 • News
TMT Mirror Segment Handling Equipment Passes Preliminary Design Review
May 26th, 2021 • Associate Project Manager Blog
Meet the TMT Team - Professor A.N. Ramaprakash (Ram)
May 21st, 2021 • News
Remembering Hugh Thompson
May 13th, 2021 • News
TMT’s Telescope Structure progresses to Production Readiness
April 29th, 2021 • News
Progress made on TMT mirror production
April 23rd, 2021 • News
Update from TMT Science Advisory Committee
April 19th, 2021 • News
First M1 Roundels Produced by Coherent for TMT Successfully Shipped to Storage Facility...
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April 19th, 2021 • Photograph
One of the first TMT polished roundels completed at Coherent, Inc.’s facility in Califo...
March 16th, 2021 • News
TMT & Larson Packaging Company designed and prototyped a crate for TMT mirror segments
March 8th, 2021 • News
TMT Mirror Segment Shipping Container Design and Prototypes Completed through Collabora...
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March 12th, 2021 • Photograph
TMT Polished Mirror Assembly Measurement at Arizona Optical Systems (AOS) Lab

What is TMT?

The Thirty Meter Telescope is a new class of extremely large telescopes that will allow us to see deeper into space and observe cosmic objects with unprecedented sensitivity.

What will TMT Explore?

TMT will be a unique tool for probing many outstanding open questions in astronomy.

Who is building TMT?

The Thirty Meter Telescope is being designed and developed by the TMT International Observatory LLC (TIO).

Our Story So Far...

The Board of the Thirty Meter Telescope selected Maunakea in July 2009 after a rigorous five-year campaign spanning the entire globe that measured virtually every atmospheric feature that might affect the performance of the telescope.

Latest From TMT

Update on TMT High Quality Optics Polishing at Coherent
January 19th, 2022 Engineering & Technology

The fabrication of TMT’s primary mirror segments at Coherent Inc. in California continues to progress well. To date, a total of 19 M1 polished roundels have been delivered to TMT’s secure warehouse facility for storage.

TMT Appoints Dr. Fengchuan Liu as Project Manager
November 22nd, 2021

Dr. Fengchuan Liu has been named project manager of the Thirty Meter Telescope (TMT), where he will lead the observatory design and development. He most recently served as acting project manager and was also the deputy project manager from 2015 to 2020. He is currently based in Hilo on Hawaii Island.

TMT was at AstroDay in Kona
November 18th, 2021 Education & Outreach

TMT was pleased to join the Maunakea Observatories in celebrating AstroDay on November 14, 2021 at Kona Commons Shopping Center in Kona. AstroDay continues to be a leading community outreach program for the observatories. This time around, the AstroDay celebration event was back “in-person,” with its share of free, family-friendly astronomy activities.

US Extremely Large Telescope Program Supports Vision of Decadal Survey
November 5th, 2021 Astro2020 Decadal Survey

The decadal survey for astronomy and astrophysics is a powerful study that our community uses to drive strategy and vision for the next decade of federally funded transformative science. The 2020 report, Pathways to Discovery in Astronomy and Astrophysics for the 2020s (Astro2020), was published by the National Academies of Science, Engineering, and Medicine on 4 November 2021. We are honored that the community, via the decadal survey, has...

Astro2020 Decadal Survey Released
November 4th, 2021 Astro2020 Decadal Survey

Today, the National Academies released the Astronomy and Astrophysics Decadal Survey (Astro2020) with its recommendations for implementing a strategy and vision for the coming decade of U.S. Astronomy & Astrophysics frontier research.