Before DESI, the Dark Energy Spectroscopic Instrument, can begin its five-year mission from an Arizona mountaintop to produce the largest 3D sky map yet, researchers first needed an even bigger 2D map of the universe. https://newscenter.lbl.gov/2021/01/13/building-a-giant-2d-map-of-the-universe-to-prepare-for-the-largest-3d-map/
January 2019 – July 2022
