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About

Roger Eng is a pioneering astronomical instrumentation scientist whose work has fundamentally shaped wide-field spectroscopy at the MMT Observatory. His primary research areas include fiber-optic spectrograph design, robotic positioning systems, and multi-object astronomical instrumentation. Eng’s most transformative contribution is the development of Hectospec, the MMT’s revolutionary 300 optical fiber-fed spectrograph (382 citations), which employs a pair of high-speed six-axis robots to reposition fibers with 25-micron accuracy in under five minutes. This innovation dramatically increased observational efficiency for large-scale surveys. He further advanced the field with Hectochelle (67 citations), a multiobject echelle spectrograph that shares Hectospec’s robotic positioner, enabling high-resolution spectroscopy across a wide field. Eng also played a critical role in commissioning the MMT’s f/5 wide-field optics (25 citations), delivering a 1° diameter field for spectroscopy and sub-0.5 arcsecond image quality. His work has enabled countless studies in stellar astrophysics, galactic dynamics, and extragalactic surveys, cementing his legacy as a key architect of modern, high-throughput astronomical observation.