The Dark Energy Spectroscopic Instrument or DESI will scan the night skies to take precise measurements of the growing universe.
With 5,000 individual fibre-optic eyes, the instrument is capable to look at extensive portions of the night sky at once.
The instrument will generate detailed three-dimensional maps of the universe.
Scientists have attached the instrument on top of the Mayall Telescope at the KittPeak National Observatory in Arizona, US.
DESI was deliberated and built by an international cooperation including critical support from the UK.
DESI will officially initiate work in 2020 but the instrument has previously taken images of galaxies 11 billion light-years away.
The objective of the mission is to understand how dark energy has got past the force of gravity in a young universe to speed up its degree of expansion.
Professor Ofer Lahav from University College London (UCL) stated: “The capability of DESI to capture the spectra of 5,000 different galaxies concurrently is about 10 times more than formerly achieved.
“By looking back in time by up to about 11 billion years, DESI will uncover secrets of the universe’s infancy and initial development.
“This new material will help us better comprehend the physical processes driving the accelerating expansion of the universe, one of the main unsolved questions in physics.
The funding permitted about 30,000 academic staff and students to contribute in the experiment.
Professor Peter Doel who was in charge of accumulating DESI, stated: “It’s been incredibly satisfying seeing the first images from DESI utilizing the specialist equipment made in the UCL Optical Science Laboratory and we are looking forward to the survey formally starting quickly next year”