The GMT will be built and operated by a consortium of institutions from the United States, South Korea, and Australia. Larger and more powerful than any previous optical telescope, it will be up to 100 times more sensitive than current ground-based telescopes, and will produce images 10 times sharper than those from the Hubble Space Telescope.

GMTO Corporation Board Chairperson and Carnegie Observatories director, Wendy Freedman said, "We are delighted at the success of our Australian colleagues. This funding will give Australian astronomers access to about 10% of the time on the GMT, and assure that they remain at the forefront of astronomical research. It provides another strong boost of forward momentum for the project, one of many it has received of late."

Harvey Butcher, Director of the Australian National University Research School of Astronomy and Astrophysics and Mount Stromlo Observatory said, "Involvement in GMT will strongly advance Australia's contributions to science and innovation and provide a focus for attracting the next generation of scientists and engineers."

"Australia's action strengthens the GMTO and will help us build the telescope we dream of in Chile. To achieve this dream takes money, talent, and grit. The Australians are bringing all three," said Patrick McCarthy, director of the GMTO.

The GMT will combine seven 8.4-meter primary mirror segments resulting in an equivalent 24.5-meter telescope. It will be used to explore currently unanswered questions about the nature of dark matter and dark energy, the origin of the first stars and first galaxies, and the mysteries of star formation, galaxy evolution, and black hole growth. The GMT will also play a key role in the detection and imaging of planets around nearby stars.