The New Star Finder by Stjepo Kotlarić, evaluated by both local and foreign experts as exceptional work in the field of astronomical navigation, has undergone several editions and has long been the main and the only star finder (or star identifier) used by our navy, naval schools, and sailors in general. In this paper we present, on the example of the two stellar maps from the second edition of Kotlarić's New Star Finder, the proposal process of digitization of a star maps. That process include, in addition to standard step of scanning and removal of deformation of scanned material, a vectorization of scanned maps using the software package AutoCAD and Raster Design 2010. Idea is to give the proposal process of digitization of any stellar maps in order to store the existing data as well as leave the possibility of their further updates.