Very-high energy photons (E>20 GeV) are a key tool for the study of some of the most extreme environments in the universe: stellar explosions, pulsars and supermassive black holes are prime targets for this fast-developing branch of Astronomy. The Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based observatory for gamma-ray astronomy at very-high energies. The first large-sized CTAO telescope, LST-1, the most advanced of its kind worldwide, is already operational in the northern hemisphere site of CTA, at the Roque de Los Muchachos Observatory in the Canary island of La Palma. IFAE has played a major role in the construction and the commissioning of the cameras of LST-1. LST-1 records the Cherenkov light induced in the atmosphere by the showers of ultrarelativistic particles initiated by very-high-energy cosmic photons. The student will work in the analysis of LST-1 observations performed in the 2020-2026 period, looking specifically for “anomalous events” like those produced e.g. by artificial satellites crossing the field of view of the telescope, which are a source of background for the instrument. Good programming skills, with some software development experience in Python, are required.