Part of TMT's Segmented Primary Mirror, showing the close packing of the glass segments
Test setup to develop tooling and cutting parameters for hexing of TMT's Primary Mirror glass
Packing TMT finished roundel at Coherent facility, in June 2021 Held by the three suction cup lifters of a crane, the TMT polished roundel is carefully placed in a shipping crate and sealed inside a large optical tissue paper for protection.
TMT Mirror Shipping activity in the Bay Area Six TMT Primary Mirror blanks arrive at Coherent and are ready to enter the shop, June 10, 2021.
Storage of TMT polished roundels A total of five accepted and completed roundels produced by Coherent are stacked at the TMT storage facility in Fremont, CA, June 2021.
TMT M1 polished roundel produced at Coherent facility in California – June 2021. Another finished roundel for TMT’s primary mirror is carefully prepared for packing and shipping.
The LGSF mounted on the telescope structure will project powerful laser beams into the upper atmosphere of the Earth, creating artificial stars for adaptive optics correction of the atmospheric turbulence.
The Laser Units (each consisting of a Laser Head and Laser Electronics) are installed on the laser platform. A long beam transfer optics enables the laser beams to be relayed to the LGSF Top-End, where they will be formatted and then launched from the laser launch telescope.
LGSF top-end mechanical layout showing the asterism generator, the collimator and laser launch telescope.
The refrigeration prototype will be used for the cooling of TMT's Narrow Field Infra-Red Adaptive Optics System enclosure.
TMT refrigeration prototype for NFIRAOS first-light adaptive optics system has been developed by the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPC) in Beijing and arrived at the NRC Canada's Herzberg Astronomy and Astrophysics Research Centre in Victoria.
Beam Launch and Imaging System (BLIS). The BLIS sub-system will be installed at the top of a five-story test for measurement of an M1 segment assembly below at the bottom of the tower. The side covers have been removed in the picture on the left, showing the mechanical setup and cable routing of the imaging and illumination system. At center, the access door allows the technician to exchange the computer-generated hologram (CGH) to match the type of M1 segment that is being measured.
