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About

Yutong Duan is a key figure in the engineering and instrumentation of large-scale cosmological surveys, with a primary focus on the Dark Energy Spectroscopic Instrument (DESI). Their most significant contribution is the development and implementation of the robotic multiobject focal plane system for DESI, a groundbreaking achievement detailed in their 2022 paper, which has garnered 175 citations. This system comprises 5,020 robotic fiber positioners installed on the Mayall Telescope at Kitt Peak National Observatory, capable of autonomously retargeting optical fibers every 10–20 minutes with micron-level precision. This innovation enables DESI to efficiently map the universe by simultaneously collecting spectra from thousands of galaxies. Duan’s work is central to DESI’s ambitious five-year survey, which aims to measure precise redshifts of 40 million galaxies and quasars to probe dark energy using the Baryon Acoustic Oscillation method. Their contributions have been instrumental in advancing observational cosmology, demonstrating a remarkable blend of robotics and astrophysics that pushes the boundaries of what is possible in large-scale sky surveys.