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About

T. Dwelly is a key figure in modern astronomical spectroscopy, whose work has been central to the Sloan Digital Sky Survey V (SDSS-V), the first all-sky, multi-epoch, optical-to-infrared spectroscopic survey. Their research focuses on pioneering panoptic spectroscopy and the complex robotic systems that make large-scale sky mapping possible. Dwelly’s major contributions include co-authoring the foundational papers defining SDSS-V’s ambitious science goals—cited over 25 times—and developing the Roboscheduler, a sophisticated software system that coordinates up to 50,000 observations over the survey’s five-year duration. This scheduling algorithm is critical for managing the 500 robotic fiber positioners at both Apache Point Observatory and Las Campanas Observatory, enabling efficient, dynamic configuration of multi-object spectrographs across hemispheres. By solving the logistical challenge of coordinating millions of individual exposures, Dwelly’s work has directly enabled SDSS-V to map the Milky Way’s stellar populations, black holes, and variable phenomena at unprecedented scale. Their achievements represent a blend of engineering ingenuity and scientific vision, making them an essential contributor to one of astronomy’s most ambitious ongoing surveys.