  Presented paper describes the basic principles and features of the
implementation of a robotic network of optical telescopes MASTER, designed to
study the prompt (simultaneous with gamma radiation) optical emission of
gamma-ray bursts and to perform the sky survey to detect unknown objects and
transient phenomena. With joint efforts of Sternberg astronomical institute,
High altitude astronomical station of the Pulkovo observatory, Ural state
university, Irkutsk state university, Blagoveshchensk pedagogical university,
the robotic telescopes MASTER II near Kislovodsk, Yekaterinburg, Irkutsk and
Blagoveshchensk were installed and tested. The network spread over the
longitudes is greater than 6 hours. A further expansion of the network is
considered.
