The first release and preliminary analysis of Pi of the Sky data in R filter

Pi of the Sky is a system of wide field-of-view robotic telescopes, which search for short time-scale astrophysical phenomena, especially for prompt optical GRB emission. On the other hand, the data could be used to search for variable stars. The analysis of variable star are based on precise photometry, which requires detailed image analysis. The main goal of cataloguing procedure is to identify all objects in an image, and to add their measurements to the database. We would like to present new procedure to catalogue data gathered with Pi of the Sky detector equipped with R filter in San Pedro de Atacama in season 2009-2011.