  The Optical Monitoring Camera on-board INTEGRAL (OMC) provides Johnson V band
photometry of any potentially variable source within its field of view. Taking
advantage of the INTEGRAL capabilities allowing the simultaneous observation of
different kind of objects in the optical, X and gamma rays bands, we have
performed a study of the optical counterparts of different high-energy sources.
Up to now, OMC has detected the optical counterpart for more than 100 sources
from the High Energy Catalog (Ebisawa et al., 2003). The photometrically
calibrated light curves produced by OMC can be accessed through our web portal
at: http://sdc.laeff.inta.es/omc
