  Software products nova.astrometry.net, SExtractor and Aladin are shown to be
used for searching for transient phenomena in series of photometric images. An
algorithm for taking into account atmospheric distortions introduced into
images during observations is pro-posed. The algorithm is based on the
correlation analysis of the series of photometric estimates of the brightness
of objects in the image field. The possibility of searching for transient
phenomena is shown to be on time intervals smaller or longer than the
observation time.
