An astronomical complex intended to detect optical transients (OTs) in a wide field and follow them up with high time resolution investigation is described. Comment: 4 pages, 3 figures. To be published in "Il Nuovo Cimento", Proceedings of the 4th Rome Workshop on Gamma-Ray Bursts in the Afterglow Era, eds. L. Piro, L. Amati, S. Covino, B. Gendre