2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3816In this contribution we schematically summarize a number of ongoing, coordinated spectro-photometric projects devoted to the study of the stellar population properties in Omega Cen. All of these investigations are part of a global comprehensive project led by our team to address the complex formation history of stars in this cluster.9 pages, 7 figures, to appear in "Omega Centauri: a unique window in astrophysics", proceedings of the Workshop held in Cambridge in August 2001Astrophysicstext