A new collection of international white papers submitted to 鈥淓SO Expanding Horizons: Transforming Astronomy in the 2040s鈥� showcases the extraordinary scientific potential of a 30鈥�40 meter class Extremely Large Telescope (ELT) in the Northern Hemisphere and highlights the unique contribution the Thirty Meter Telescope would make to global...
The Thirty Meter Telescope (TMT) International Observatory (TIO) is pleased to announce the successful completion of Final Design Review鈥�1 (FDR-1) for the InfraRed Imaging Spectrograph (IRIS), held on December 8鈥�9, 2025.
TMT is exploring a promising avenue for a new observatory based in Spain.
The Thirty Meter Telescope (TMT) International Observatory (TIO) is pleased to announce that the Multi-Object Diffraction-limited High-resolution Infrared Spectrograph (MODHIS) has successfully completed its Conceptual Design Review (CoDR).
The Thirty Meter Telescope (TMT) International Observatory (TIO) is delighted to announce the successful completion of the Preliminary Design Review 1 (PDR-1) for the Wide Field Optical Spectrograph (WFOS), held on August 7鈥�8, 2025, at the TIO Project Office in Pasadena, California, and via Zoom.
The Tertiary Mirror Support System and Positioner Assembly (M3SSPA) has now successfully completed its Preliminary Design Phase after the Preliminary Design Review (PDR) was held at NOIRLab in Tucson, Arizona on August 11鈥�12, 2025.
TIO team members attended last week鈥檚 conference on the Habitable Worlds Observatory (HWO; a NASA missoin designed to look for signs of life on planets orbiting other stars), where they shared insights on segmented mirror technology and next-generation instrumentation.
We remain committed to securing the best possible site and will evaluate Spain鈥檚 offer thoroughly and promptly.
Engineers and scientists over at the National Research Council in Canada are busy preparing some very special pizza boxes for TMT. But forget pepperoni, these boxes are packed with high-tech electronics that control TMT鈥檚 highly advanced adaptive optics system, NFIRAOS.
The work on the secondary mirror polishing for the Thirty Meter Telescope (TMT) has begun.
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