Thirty Meter Telescope

Astronomy's Next-Generation Observatory
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...

TMT scientists 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

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TMT Observatory Software Infrastructure Progress
February 15th, 2018

The year started at full speed for the TMT Observatory Software (OSW) team, who met in Pune, India with their colleagues from the India TMT Coordination Center (ITCC) and ThoughtWorks engineers to conduct their 3rd Common Software (CSW) sub-system inception meeting.

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Mirror Blank from Japan Successfully Shipped to Bengaluru, India
January 9th, 2018 Engineering & Technology

The shipment of TMT’s first meniscus-shaped primary mirror segment to the Indian Institute of Astrophysics (IIA) in Bengaluru (Bangalore) has just been completed.

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Thirty Meter Telescope Narrow Field InfraRed Adaptive Optics System Real-Time Controller Proceeds to Fabrication Phase
January 8th, 2018 Engineering & Technology

TMT’s Narrow Field InfraRed Adaptive Optics System (NFIRAOS) successfully passed its final design review and is ready to proceed to the fabrication phase, which is expected to last approximately four years.

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TMT’s first-light instrument enters final design phase
November 13th, 2017 Science & Astronomy

Following a successful second IRIS Preliminary Design Phase Review (PDR-2) at the TMT Project Office in Pasadena, IRIS is proceeding into its Final Design phase. The focus of the second review, held in September, involved an assessment of the IRIS software (including its data reduction system) and electrical design (including its detectors) as well as programmatic aspects spanning project cost and overall schedule.

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TMT to work with Coherent Inc. to polish primary mirror
November 7th, 2017 Engineering & Technology

Marking a major production milestone, TMT has entered into a contract with Coherent Inc., one of the world’s leading providers of lasers and laser-based technology for scientific, commercial and industrial customers, to polish its U.S. manufactured primary mirrors (M1) segments.