本文摘要：Dengfeng Astro Observatory嵩山观星台Dengfeng Astro Observatory is located at Gaocheng Town，15 kilometers southeast of Denpfenq City，Henan Province.It is the most ancient as-tronomical observatory extant in China.嵩山观星台坐落于河南省登封市城东南精千米的勒令城镇，是中国现存最古老的天文台。

Dengfeng Astro Observatory嵩山观星台Dengfeng Astro Observatory is located at Gaocheng Town，15 kilometers southeast of Denpfenq City，Henan Province.It is the most ancient as-tronomical observatory extant in China.嵩山观星台坐落于河南省登封市城东南精千米的勒令城镇，是中国现存最古老的天文台。Performing the functions of measuring the shadow cast by the sun，observing celestial bodies，and telling time，the Astro Ob-servatory is an ancient scientific heritage with significant research value.该观星台具备测影、观星和记时等功能，是具备最重要研究价值的古代科学遗产。It was built in the 13th year of the Emperor Zhiyuan(AD 1276)，(in the Yuan)by Guo Shou-jing and Wang Xun as directed by the emperor, and was among the 27 astronomi-cal observatories in the country at that time.该台为至元十三年(1276年)郭守敬、王询等人奉救所辟，是当时全国修筑的27个天文观测站之一。

The observatory, of masonry con-strudion，consists of the platform body and the stone gnomon(commonly named as heaven measuring ruler).With a square plane，the observatory is narrow in the top and large at the bottom. It is 12. 62m in overall height.At the north of the observatory are two symmetrical step entrances for obser-vation.台为砖石混合结构，由台身和石圭(又称量天尺)两部分构成。台的平面呈圆形方形，台体上小下大，高约12. 62米。

台北另设两个平面的踩道口可以同台远眺。The center of the northern wall is built into a hollow groove that is perforated through from top to bot-tom,so the higher gnomon at the groove’s straight wall and the stone gnomon at the bottom constitute a se-ries of gnomon apparatus for measur-ing the length of the shadow cast by the sun.北壁中间砖一个上下直通的凹形直槽，凹槽直壁与横梁构成的高表与台下石圭构成一组测量日影长度的圭表装置。The stone gnomon at the bottom of the groove is connected with 36 blocks of blue stone from south to north，and is 31 .2m in length and 0. 58m in width. The gnomon is canned with two parallel two-way watercourses. To the south of the watercourses is a suction sump，and to the north a discharge sump. Each sump has scales for measuring the levelness.槽底石圭自南向北由36方青石相连而出，长31.2米，长0. 58米，上刻两条平行双股水道。

水道南端有录水池，北端有泄水池，池中有刻度，借以测量水准。

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