For more information about TMT Hawaii, please visit https://www.maunakeaandtmt.org and https://www.maunakeaandtmt.org/get-the-facts
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TMT full-size Primary Mirror Segment Hexagonal cutting

February 3rd, 2021

Credit: Nanjing Institute of Astronomical Optics and Technology

Each TMT segment must be cut into a hexagonal shape and carved at critical dimensions for lodging high precision support components known as the central diaphragm and two edge sensors on each side.