Centering algorithm for integral for experiment OMC onboard integral

We have developed an algorithm for automated detection of stars on OMC imag es and matching the observed stars and stars from a reference catalogue. Th e OMC image is processed in a standard way, but without dark frame substrac tion and a flat-held correction. An algorithm like kappa-clipping is used a s a robust estimator of the background intensity, then a local maximum of t he intensity is found as a first approximation of the position of a star, t he parameters sharp and shape are computed to distiguish between stars and false objects and, finally, a simple correlation of observed and reference stars is computed.