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Thirty Meter Telescope

Astronomy's Next-Generation Observatory

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

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
Lgsf layout3
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

Update on TMT Primary Mirror Production in the Bay Area
June 23rd, 2021 Engineering & Technology

The production of TMT’s primary mirrors in North America is progressing very well. Several polished glass-ceramic roundels are currently in production at the Coherent manufacturing facilities; three were recently finished and shipped to the TMT storage facility in the Bay Area.

TMT Laser Guide Star Facility Passes Design Milestone
June 3rd, 2021 Engineering & Technology

The TMT Laser Guide Star Facility (LGSF) has successfully completed the first phase of its Preliminary Design Review (PDR1). The LGSF will be responsible for generating artificial laser guide stars that will be used with TMT’s Adaptive Optics (AO) systems, including NFIRAOS, the Observatory’s first-light AO facility.

TMT Metrology Equipment Arrives in California
June 1st, 2021 Engineering & Technology

The optical metrology and test set for TMT’s primary mirror segments has arrived at its warehouse in California. It was sent by Arizona Optical Systems (AOS) in Tucson, Arizona, on May 11 and arrived safely the day after at the TMT storage facility after a 500-mile journey. All fabrication and test tooling for the complete metrology system were also included in the freight.

TMT Mirror Segment Handling Equipment Passes Preliminary Design Review
May 27th, 2021 Engineering & Technology

The handling equipment for TMT primary mirror (M1) segment recently passed its Preliminary Design Review. The custom-designed equipment and tooling will be used to safely handle mirrors within the observatory during operational activities.

Remembering Hugh Thompson
May 21st, 2021 TMT Partner News

TMT is deeply saddened by the passing of TMT Systems Engineer Hugh Thompson on May 7, 2021. Hugh was a colleague, good friend and inspiration to many of us who were fortunate to interact with him over his career.