The study of GRB prompt emission (PE) is one of the main goals of the Lomonosov
space mission, which is being prepared at Moscow State University. The GRB
monitor (BDRG) and the wide-field optical cameras (SHOK) are intended for detection of GRB
prompt emission as well as optical counterparts. The BDRG instrument consists of three
identical NaI(Tl)/CsI(Tl) (13.0 × 2.0cm ) phoswich detectors, whose axes determine the
Cartesian coordinate system. This allows to localize any GRB source on the sky by means of
the count rate seen by each detector with an accuracy of ~2 deg. The SHOK
instrument consists of two identical wide-field cameras (WFC) directed in such a way that
the field of view (FOV) of each WFC overlaps by the corresponding BDRG FOV, which produces
a trigger on the WFC in case of a GRB detection. With this setup, the GRB prompt light
curve will be obtained in the visible without any delay with respect to gamma-rays, which
is crucial for a GRB central engine understanding.