1. Faculty of Sciences and Arts, Physics Department,Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey
2. Astrophysics Research Centre and Ulupınar Observatory, Çanakkale Onsekiz Mart University, 17100 Çanakkale, Turkey
3. Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
4. Astronomický ústav, Akademie ved České republiky, CZ-251 65 Ondřejov, Czech Republic