Abstract— It is not so easy for amateur astronomers or
ordinary persons to find a specific celestial body on the night sky.
We represent a celestial map rendering program which
reproduces the night sky at the specific time and location. With
the OpenGL-based full 3D-graphics features, our system brings a
sense of spatial realism. For the more accurate celestial map
rendering, we referred to a set of star catalogues including
Messier list, Yale Catalog of Bright Stars, and others. Since it is
developed on typical PC's, our system can provide accurate
celestial maps in an interactive manner, without any special
equipment.