Shipping each of the 574 extremely fragile primary mirror segments with all its electronics and components isn't an easy task.
Significant violent crash impacts of four meters per second were conducted and demonstrated the level of protection for TMT’s extremely fragile equipment. Shock loads on the SSA and PMA did not exceed maximum allowable values.
Experiment on TMT Prototype Surface Polishing by Ion Beam Figuring (IBF) Process - Timelapse video. A full-size TMT segment prototype, underwent IBF testing of its surface quality at scia Systems GmbH in Chemnitz, Germany in February 2020. scia Systems’ IBF chamber is large enough to carry out a detailed study of the final polishing stage of TMT’s 1.4m segments. Video credit: TMT International Observatory
Installation of TMT mirror segment prototype on the MSIT facility at TMT technical lab in California. This time-lapse video, recorded on February 11, 2020, shows the painstaking process of integrating a primary mirror segment into the TMT Multi-Segment Integration & Test (MSIT) facility. It shows the integration of the seventh and final segment - Video credit: TMT international Observatory / Saeko S. Hayashi
Michael Bolte, Professor of Astronomy and Astrophysics at the University of California Santa Cruz and member of the Board of Directors for the Thirty-Meter Telescope International Observatory, is speaking about TMT status and progress during the US-ELT presentation/session at AAS 235th meeting in Honolulu.
The leaf springs required for TMT warping harness mechanism, supporting each one of the 492 primary active segments, are being tested and validated in an Environmental Simulation Laboratory.
TMT Project Office representatives visited the India TMT Optics Fabrication Facility, near Bengaluru, India on January 2019. Here is a video of this world class optical facility, whose construction is nearly completed. The next step will be to bring in high-precision machines that will prepare and polish a large number of TMT primary mirror segments.