A delegation of the Department of Science and Technology (DST) visited Hawaii in the US and discussed challenges in the progress of the Thirty Meter Telescope (TMT) project and ways to overcome them.

Thirty Meter Telescope (TMT)

• The Thirty Meter Telescope (TMT) is a next-generation extremely large telescope that will offer astronomers a window to the Universe with unprecedented quality and depth.

• It is a 30-meter diameter primary mirror optical and infrared telescope being established at Mauna Kea in Hawaii. 

• It is being designed and developed by the TMT International Observatory (TIO).

• The TMT will enable scientists to study fainter objects far away from us in the universe, which gives information about early stages of the evolution of the universe. 

• It will also give finer details of not-so-far-away objects such as undiscovered planets and other objects in the solar system and planets around other stars.

• TMT’s light-collecting primary mirror will be the largest in the northern hemisphere.

• India is a founder-member partner in this project which aims to open new windows to the universe through optical and infrared astronomy. 

• The TMT project is the joint responsibility of the Department of Science & Technology (DST) and the Department of Atomic Energy (DAE) from India. 

• Hanle in Ladakh was one of the sites considered for hosting the telescope. 

• The project is a non-profit collaboration among the University of California, the California Institute of Technology, the National Astronomical Observatories of the Chinese Academy of Sciences, the National Institutes of Natural Sciences of Japan, the National Research Council of Canada, and the Department of Science and Technology of India.

• India is a partner in the multi-billion dollar project which is expected to be completed in the early 2030s.

• The 30-meter primary mirror array is composed of 492 hexagonal segments, each 1.44 meters across. Its surface area will be larger than a standard baseball infield.

• The complex project involves making all the 492 segments to act as one single mirror of 30-m diameter while the telescope is tracking the sky with extreme precision. 

• India’s contribution relates to the software, electronics and hardware to control the 492 segments behave as a single mirror within a few nanometers. More than a dozen industries are involved in making these very precision systems. 

• TMT will have more light gathering power than the largest 10 existing ground-based telescopes combined, and its images will be 12 times sharper than those from the Hubble Space Telescope and more than four times sharper than those from the James Webb Space Telescope.

• The 50-meter-tall telescope weighs 2,650 tonnes and is enclosed within a very compact 56-meter tall dome.

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