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TMT Secondary Mirror Support System and Positioner Assembly Kick-Off Meeting
November 16th, 2023 Engineering & Technology

A kickoff meeting was recently held for the TMT Secondary Mirror Support System and Positioner Assembly (M2SSP), a critical subsystem of the TMT Observatory. Responsible for safely supporting and adjusting the rigid body motion of the secondary mirror (M2), the M2SSP encompasses all of the secondary mirror system hardware, minus the mirror...

Faster Processing for TMT's Precision Mirrors
September 1st, 2023 Engineering & Technology

Coherent installs an advanced ultrasonic machine tool to speed hexing of the 1.5 m diameter Thirty Meter Telescope mirror segments.

Dust Boot Design for TMT’s Primary Mirror Moves Into Final Design Stage
July 17th, 2023 Engineering & Technology

An important component of TMT’s Primary Mirror Control Sensing System and the Alignment and Phasing System is progressing to its final design and qualification stage: the sensor dust boots.

TMT Refrigeration Cooling System Proceeds to Preliminary Design Phase
June 6th, 2023 Engineering & Technology

The TMT Refrigeration Cooling System (REFR) will proceed to the Preliminary Design phase next year after successfully passing its Conceptual Design Review closeout meeting on May 3, 2023.

TMT Mirrors Alignment and Phasing System Progress
June 2nd, 2023 Engineering & Technology

How will TMT make its 492 primary mirror segments behave as a single mirror of 30 meter diameter? TMT’s Alignment and Phasing System (APS) team has come up with the solution that will keep all of TMT’s mirrors aligned to a high precision of about 10 nm root-mean-square (RMS).

TMT’s Segment Support Assembly Enters Production in India
April 26th, 2023 Engineering & Technology

TMT’s Optics and M1 Segment Support Assemblies (SSA) is ready to enter production following a successful Fabrication Readiness Review that assessed the production of the hardware required to support the primary mirror segments. Larsen and Toubro (L&T), which is supplying the SSAs, is now one step closer to start production and shall proceed with the procurement of raw material.

TMT’s Telescope Structure Readies for Production
March 23rd, 2023 Engineering & Technology

TMT’s telescope structure subsystem (STR) recently completed two successful Production Readiness Reviews (PRR2 and PRR3) to assess the availability of adequate resources and planning for production, and later for assembly, integration and verification. The STR’s design and future fabrication are activities led by NAOJ and their prime contractor Mitsubishi Electric Corporation (MELCO) in Japan.

India TMT Coordination Centre Produces TMT Main Mirror Roundel
February 1st, 2023 Engineering & Technology

The second TMT India roundel has been completed! The roundel was polished at the Coherent facilities in Richmond, California by the India TMT Coordination Centre (ITCC) staff, using ITCC equipment under the supervision of Coherent’s staff.

TMT Segment Mount Undergoes Tests in the Netherlands
November 17th, 2022 Engineering & Technology

A few months ago, TMT Optical engineers traveled to the Netherlands to support the Dutch company TNO install a TMT Segment Support Assembly (SSA) onto an SSA Module Acceptance Test Tool (SMATT). This is an important step in the design and construction of the M1 optics system, a 492-segment primary mirror for the TMT. 

Updates for TMT Telescope Structure and Utility Services
October 12th, 2022 Engineering & Technology

The teams working on TMT’s Segment Handling System (SHS) and utility system design received some good news following a series of critical review meetings earlier this spring. The TMT Telescope Structure Subsystem (STR) and Summit Facility (SUM) groups conducted the reviews and based on the outcome, the teams mays now proceed independently with the final design of their systems toward production preparation.

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