1. THE CONTRIBUTION OF TO THE ASTRONOMY Yusuf BAYRAMOĞLU CET 9800340 Title ALİ KUŞCU

2. Introduction Aim TO INVESTIGATE THE STUDIES OF TURKISH SCIENTIST TO THE ASTRONOMY IN 15. CENTURY

3. Introduction Outline HIS WORK OF ARTS, THE PEOPLE WHO AFFECT HIM, THE EFFECT OF THE CENTURY ON HIM Include Exclude THE PERSONALITY OF HIM, HIS STUDIES ON MATHEMATICS

4. HE STARTED TO WORK IN OBSERVATORY WITH ULUĞ BEY AND WROTE OBSERVATORY Zic-I Uluğ bey TOGETHER

5. Hallül Eşkalil Kamer TO ULUĞ BEY AS A GİFT MEANWHILE, HE PRESENT, WHICH IS ABOUT THE PHASE OF MOON OF MOON,

6. HE WROTE AND TRANSLATE A LOT OF BOOK WITH THE HELP OF HIS OBSERVATIONs IN ULUĞ BEY’S OBSERVATORY

7. ONE OF THEM IS FETHIYE WHICH IS GIVEN TO FATIH SULTAN MEHMET AFTER CONGUEST OF ISTANBUL FATIH SULTAN MEHMET

8. ULUĞ BEY WAS KILLED AND THE OBSERVATORY WAS RAZED TO THE GROUND BYTHE OBSERVATORY Abd al-Latif’s DISLOYALTY

9. AFTER THE DEATH OF UZUN HASAN, THE SULTAN OF AKKOYUNLULAR,ACCEPTED HIM ULUĞ BEY

10. THE NEED TO DETERMINE THE PRAY TIME AND THE PERIOD OF HOLY DAYS IN ISLAM 12 OCAK

11. PROVIDE AN IMPROVEMENT AND DEVELOPMENT IN ASTRONOMY THANKS TO THE SCIENTESTS WHO DEAL WITH OBSERVATIONSASTRONOMY

12. IS THE STUDY OF STARS, PLANETS, BLACK HOLES AND THEIR MOVEMENT IN SPACE

13. FULL MOON, HALF MOON, NEW MOON ARE NAMES WHICH ARE USED TO CLARIFY THE PHASES OF MOON

14. OBSERVATORY IS A PLACE WHERE OBSERVERS MAKE OBSERVATION OF THE STARS, MOON, PLANET, WEATHER

15. THE SULTAN OF OTTOMON EMPIRE WHO CALLED THE CONQUER DUE TO THE CONQUEST OF ISTANBUL