It's part of the Dark Energy Spectroscopic Instrument (DESI).
“The data has already led to a set of papers, which include early measurements of galaxy clustering, studies of rare objects, and descriptions of the instrument and survey operations; as well as showing DESI’s ability to accomplish its design goals.”
“This milestone shows that DESI is a unique spectroscopic factory whose data will not only allow the study of dark energy but will also be coveted by the whole scientific community to address other topics, such as dark matter, gravitational lensing, and galactic morphology.” It has the unique ability to to measure light from more than 100,000 galaxies in one night, allowing it to build a 3D cosmic map.The precise instrument helps provide feedback for the robotic positioners so they can be precisely positioned in a very short amount of time, enabling the efficiency of the whole system.
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