Applications of Coronagraph in Astronomy

In the last fifteen years, the discovery of the planets (exoplanets) of our Solar System on Earth has become relatively common. Nowadays, more than 4500 exoplanets have been discovered by indirect learning methods. Since such methods may not lead to real results, it is important to directly observe the residue produced or reflected by the exoplanets themselves with the method as “Direct Imaging Method”. Direct imaging method can reveal single or multiple exoplanet systems and their dynamical evolution accordingly. In addition, it makes it possible to study many stellar systems and astrophysical mechanisms, i.e. active galaxies, mass transfer mechanisms, or protostar formation and evolution, or faint components (or stars) nearby a bright source. The importance of this method is gradually increased by the development of technology. Within this study, it is aimed to provide a basis for how the “Direct Imagining” method can be used with the “Coronagraph Device” on the 4-m class optical/infrared telescope which is planned to be completed soon within DAG (Eastern Anatolia Observatory).