Thirty Meter Telescope

TMT is a next-generation observatory committed to supporting community-based astronomy through respect, inclusion and community stewardship.

[Thirty Meter Telescope @TMTObservatory]

We’re excited to announce the successful completion of the Secondary Mirror (M2) Metrology & Polishing Equipment Final Design Review!

@UAZOpticalSci has been leading this work since Spring 2025, developing the advanced tools needed to meet the mirror’s demanding optical requirements. At 3.13m & 2000kg, our M2 will be one of the largest convex mirrors ever created!✨ #NSFfunded @nsf

🔗 https://t.co/MFdWFUXAdo

[Thirty Meter Telescope @TMTObservatory]

Major Milestone!🚨 The Stress Mirror Polishing FRR has been successfully completed by @India_TMT! This review marks the culmination of 9 years of work, including the construction and standup of a state-of-the-art polishing facility at @IIABengaluru and successful polishing & metrology of a test roundel that meets all requirements. ✨🔭

🔗 https://t.co/6nioRdBUYn

[Thirty Meter Telescope @TMTObservatory]

Major Milestone 🌟 Our Laser Guide Star Facility team has completed its first Final Design Review! The review panel commended the team’s mature, high-quality design and significant progress, including an optimized optical path and successful prototyping of alignment cameras, actuators, and optics at operating temperatures. 🌠 Thank you to our reviewers and onward to the next phase! 🔭 #NSFfunded @NSF

🔗 https://t.co/R5yOnGEdB2

[NASA Universe @NASAUniverse]

#OTD in 1987, astronomers spied a bright flash in a neighboring galaxy. The event, called SN 1987A, remains the closest supernova in over 415 years and is one of the best opportunities to study this type of stellar death. More: https://t.co/Zep65ag2b5

[Thirty Meter Telescope @TMTObservatory]

Congratulations to all the winners of the #CongressionalAppChallenge! 🌟 We were excited to sponsor gift bags with TMT swag for the talented contestants from California’s 28th Congressional District. It’s always inspiring to see young innovators showcase their passion for coding and technology!

[Judy Chu @RepJudyChu]

Congratulations to the 2025 #CongressionalAppChallenge winners from #CA28!

I’m astonished by the talent behind each submission, showing the importance of STEM education for our youth. Thank you to every young coder who participated this year! @CongressionalAC

[Thirty Meter Telescope @TMTObservatory]

👏👏 looks just like the real thing! 😉

[🌌 Syzygy Altair or "Z" 🌌 | Physics VTuber @SyzygyAltair]

I built a 1/500 scale model of the Thirty Meter Telescope! ❤️🔭 @TMTHawaii

[Thirty Meter Telescope @TMTObservatory]

@SyzygyAltair We can’t wait to see how it goes! 🔭

[🌌 Syzygy Altair or "Z" 🌌 | Physics VTuber @SyzygyAltair]

I’M RETURNING FROM HIATUS!!!!! 🥳🎉

To celebrate, we'll be building a telescope!🔭
Well… a 1/500 scale model of the upcoming Thirty Meter Telescope! 😅♥️ @TMTHawaii

📌 Saturday, January 17th @ 9 AM PST
📌 Youtube & Twitch

[NOIRLab Science @NOIRLabScience]

The #AAS247 winter session is coming to a close after an engaging and astronomy-filled week. Thank you to @aas_office, our US Extremely Large Telescope Program partners, and all meeting participants. @giantmagellan @TMTHawaii @NOIRLabAstro

[Thirty Meter Telescope @TMTObservatory]

Another great meeting at #AAS247 thanks to @AAS_Office! It was a pleasure to be part of the #USELTP booth hosted by @NOIRLabAstro, where we had many engaging conversations about the Thirty Meter Telescope. Thanks to everyone who stopped by, whether to catch up on the latest TMT progress or to learn more about its far-reaching scientific capabilities.✨

[NOIRLab Science @NOIRLabScience]

We’re excited to be at #AAS247 in Phoenix with @aas_office!
Stop by the US Extremely Large Telescope Program booth to pick up some astro swag and chat with our experts.
@TMTHawaii @giantmagellan @NOIRLabAstro

[Thirty Meter Telescope @TMTObservatory]

Thank you to the President of the @EIB, @NadiaCalvino, for supporting TMT! 🔭

[Nadia Calviño @NadiaCalvino]

Last #1week1minute🎥 2025

✔️Support @EU_Commission #housing plan: €6bn for innovation, renovation & new building

✔️€10bn for health #biotech

✔️Projects 🇷🇴🇫🇷🇫🇮🇪🇸, including super🔭

✔️Support 🇺🇦

✔️On track for @EIB Group €100bn financing target

Best wishes for 2026!🎄💫

[Thirty Meter Telescope @TMTObservatory]

In a new set of international white papers submitted to “ESO Expanding Horizons”, scientists from around the world highlight the unique and irreplaceable science made possible by a Northern Hemisphere Extremely Large Telescope -- a role that only TMT can play in completing the cosmic picture.

🔗 https://t.co/Ovr2cMl9BH

[Thirty Meter Telescope @TMTObservatory]

✨ @EIB @IAC_Astrofisica ✨

https://t.co/0NKYGWYp8k