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Thirty Meter Telescope

Astronomy's Next-Generation Observatory

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

March 23rd, 2020 • News
Testing of TMT’s Primary Mirror Segment in Progress
November 1st, 2019 • News
TMT Primary Mirror Segment Support Assembly Integration
March 18th, 2020
TMT e-Newsletter March 2020
March 6th, 2020 • News
TMT Reaches Major Milestone with Completion of Fully Populated Mirror Segment Prototype...
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February 6th, 2020 • Photograph
Members Receiving Inspection Team for TMT Mirror blanks delivered at the India TMT Opti...
March 6th, 2020 • News
Installation of TMT mirror segment prototype on the MSIT facility at TMT technical lab ...
February 21st, 2020 • News
TMT Scientific Advisory Committee Holds First Meeting of the New Decade in Pasadena
February 6th, 2020 • News
Successful Receiving Inspection of 18 Mirror Blanks in India
January 27th, 2020 • News
TMT Outreach afternoon at Sierra Madre Elementary School
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February 29th, 2020 • Photograph
Production TMT Primary Mirror Segments in Japan
January 28th, 2020 • News
Eliot Arts Magnet Academy's Science Night
January 24th, 2020 • News
Michael Bolte at #AAS235 January 2020 meeting
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January 7th, 2020 • Photograph
US ELT Group Picture from AAS 235
M3pdr article illustrations
January 22nd, 2020 • Artwork
Perspectives of TMT M3 System (M3S)
January 22nd, 2020 • News
TMT Tertiary Mirror Passes Preliminary Design Review
January 21st, 2020 • News
Primary Mirror Segment Production has started at Coherent
December 20th, 2019 • News
TMT Observatory Safety System Passes Preliminary Design Review
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December 20th, 2019 • Artwork
TMT Card 2019
December 18th, 2019 • Press Coverage
Hayashi Saeko: Three Decades Pushing the Limits of Astronomical Observation with the Su...
December 13th, 2019 • News
Amazing Impact of THINK Fund Program on Hawaii Island
December 11th, 2019 • News
First Two TMT Mirror Segment Demonstrators Installed at the Monrovia lab.
November 27th, 2019 • Associate Project Manager Blog
Tuck-In Time: Integrating Glass with Metal
November 13th, 2019 • News
TMT Project Engineers at Vertical Laboratories in California test TMT Warping Harness C...
November 15th, 2019 • News
TMT Science Forum 2019 in Xiamen, China
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October 15th, 2019 • Photograph
Participants of the TMT Common Software Pre-Shipment Review on 18 September 2019, at th...
October 28th, 2019 • News
TMT Board of Governor Member Dr. Saku Tsuneta Visits TMT Technical Lab
October 15th, 2019 • News
TMT Common Software Successfully Passes Pre-Shipment Review
August 22nd, 2019 • News
News about TMT in Hawaii
October 2nd, 2019 • News
TMT Executive Director Dr. Edward Stone Receives 2019 Shaw Prize in Astronomy
October 1st, 2019 • News
TMT’s Telescope Control System Passes Preliminary Design Review
July 9th, 2019 • News
Coffee Chat on Mirror Segment Fabrication

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

Testing of TMT’s Primary Mirror Segment in Progress
March 23rd, 2020 Engineering & Technology

The first of TMT’s Primary Mirror (M1) segment prototypes was recently tested and polished using the Ion Beam Figuring (IBF) process.

TMT Reaches Major Milestone with Completion of Fully Populated Mirror Segment Prototypes at the Multi-Segment Integration & Test Facility (MSIT)
March 6th, 2020 Engineering & Technology

The Multi-Segment Integration & Test (MSIT) facility at the TMT lab in Monrovia, California, is now fully populated with seven aluminum mirror segment prototypes.

TMT Scientific Advisory Committee Holds First Meeting of the New Decade in Pasadena
February 21st, 2020 Science & Astronomy

Pasadena, CA – 06 February 2020 - TMT Science Advisory Committee (SAC) members and project office staff recently met at the Project Office in Pasadena.

Successful Receiving Inspection of 18 Mirror Blanks in India
February 6th, 2020 Engineering & Technology

One of TMT’s most important components – its huge primary mirror that spans over 30 meters – continues to be manufactured around the world.

Eliot Arts Magnet Academy's Science Night
January 28th, 2020 Education & Outreach

TMT participated in the 3rd and biggest Annual Science Night of Eliot Arts Magnet Academy on Friday January 24th.