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Thirty Meter Telescope

Astronomy's Next-Generation Observatory

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

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September 8th, 2021 • Photograph
TMT polished roundel inspection - August 2021
Ssa with glass
October 13th, 2021 • Photograph
TMT Segment Support Assembly below hexagonal glass segment
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
Coherent packing tmt roundel
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
Lgsf topend labels
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

TMT successfully passes a formal milestone review for the planning of its future operations
October 1st, 2021 Science & Astronomy

TMT recently achieved a major project milestone, with a review Board, mainly composed of external reviewers, concluding that its plans for Observatory Operations, Commissioning and Data-Management (OCDM) have reached sufficient maturity at this stage of the project design. Concretely, this positive preliminary review means that TMT’s operations plans are ready for the next rounds of Project reviews, which will assess not only operations but...

Production of the TMT M1 mirrors ramps up at Coherent Inc.
September 8th, 2021 Engineering & Technology

The successful production of TMT polished glass-ceramic (M1 roundels) is ramping up according to plan.

TMT Hilo and friends volunteering at the Hawaii Food Basket
September 7th, 2021 Community Engagement

TMT's family and friends helping at the Hilo Food Basket.

TMT Hilo office volunteers at several opportunities
August 13th, 2021 Community Engagement

Volunteering and working together is important at TMT. TMT would like to thank everyone for all the donations of activities and goodies for the keiki and families in need of help.

New Donations to the Friends of the Children's Justice Center of East Hawaii
August 10th, 2021 Community Engagement

Diana Bisel’s volunteer work for the Friends of the Children’s Justice Center East Hawaii (FCJCEastHawaii)