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About

J. Vernin is a pioneering researcher in atmospheric optics and astronomical site testing, with a particular focus on the unique conditions of Antarctica. Their major contributions center on developing and applying innovative techniques to characterize optical turbulence and atmospheric transparency, directly enabling high-precision ground-based astronomy. Vernin’s work on the Single Star SCIDAR (SSCIDAR) technique, detailed in their most-cited paper (6 citations), provides a robust method for profiling optical turbulence, a critical factor for adaptive optics and image quality. This foundational work has informed the design of next-generation telescopes. Perhaps their most notable achievement is the leadership of the PAIX (Photometer for Antarctica eXtinction) project. In an invited paper, Vernin demonstrated that long, uninterrupted photometric observations of stellar oscillations—over 150 continuous days—are possible from the ground, bypassing the day-night cycle that limits other observatories. This breakthrough opens a new window for studying stellar pulsations and evolution. Further impact is shown in their first-ever report of multiband atmospheric extinction coefficients from Antarctica, derived from 17,500 CCD frames over a full polar winter. This work, with 2 citations, provides essential data for calibrating future Antarctic surveys. Vernin’s research is a cornerstone for establishing Antarctica as a premier site for cost-effective, long-baseline astronomical monitoring.