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About

D. Rabinowitz is a key architect of the Dark Energy Spectroscopic Instrument (DESI), a revolutionary project designed to map the universe in unprecedented 3D detail. His primary research focus lies in the development of advanced instrumentation for large-scale cosmological surveys, with a specific expertise in robotic fiber positioning systems. Rabinowitz’s major contribution is leading the design and implementation of DESI’s focal plane, a system of 5,020 robotic fiber positioners that automatically retarget optical fibers with micron-level precision every 10–20 minutes. This innovation enables the simultaneous collection of spectra from 40 million galaxies and quasars, directly powering the most precise measurements of dark energy to date. His work on the fiber system and its astrometric calibration has been foundational, with his most-cited paper (175 citations) detailing the robotic focal plane. By enabling the Baryon Acoustic Oscillation technique on an industrial scale, Rabinowitz’s engineering has transformed how we probe cosmic expansion. His achievements are central to DESI’s mission, making him a pivotal figure in modern observational cosmology and a driving force behind the next generation of sky surveys.