十三世纪末期建,在河南登封县告成镇。告成镇是古代的阳城,周朝在这里用土圭测影,汉、晋、刘宋、隋、唐都曾在这里继续这一工作,并在方法上有重要的补充和订正。元朝建立了这座观星台。台高10. 49公尺,北壁有一道垂直的凹槽,是悬铜表的位置(铜表现巳失去),槽下是一道宽0. 53公尺、长30. 71公尺的石圭,上面刻有 The late thirteenth century built Dengfeng County in Henan Province into the town. Chengcheng Town is an ancient city of Yangcheng. Here the Zhou Dynasty used Tu Guji to measure the images. Han, Jin, Liu, Song, Sui and Tang all continued their work here and have important supplements and revisions in their methods. Yuan Dynasty established this stargazing station. Taiwan height 10. 49 meters, the north wall has a vertical groove, hanging copper table position (copper performance has been lost), under the groove is a wide 0.53 meters, length 30. 71 meters of stone gui , Engraved on it