First on-sky results of a Fabry–Perot Instrument for Oxygen Searches (FIOS) prototypeS. Rukdee, S. Ben-Ami, M. López-Morales, A. Szentgyorgyi, D. Charbonneau, J. García-Mejía and J. BuchnerA&A, 678 (2023) A114DOI: https://doi.org/10.1051/0004-6361/202346619
