Xinglong Station, Astronomical observatory in Xinglong County, China

Xinglong Station is an observatory (IAU code 327) on the southern slope of the main Yan Mountains peak in Xinglong County, Chengde, Hebei, at 960 metres elevation. It belongs to the optical open laboratory of the National Astronomical Observatories, Chinese Academy of Sciences, and holds seven telescopes, from a Mark-III photoelectric astrolabe and 60 cm, 85 cm and 60/90 cm Schmidt instruments to 1.26 m infrared and 2.16 m telescopes, plus the 4 m LAMOST.

Xinglong Station is operated by the National Astronomical Observatories of China under the Chinese Academy of Sciences, as part of its optical open laboratory. Its telescopes were installed over successive decades, from the Mark-III photoelectric astrolabe and 60 cm, 85 cm and 60/90 cm Schmidt instruments to the 1.26 m infrared and 2.16 m telescopes. The most recent is the 4 m LAMOST, and in 2014 a 5.2 m telescope was added for gamma-ray astronomy, known as Sām Tām for its aggressive focal length.

The station is a popular tourist site, and its name appears in the Chinese form 兴隆观测基地, from Xinglong County in Chengde, Hebei. Visitors come to see the domes of the seven telescopes on the southern slope of the main Yan Mountains peak, including the 4-meter LAMOST.

The site sits about 150 kilometers northeast of Beijing and is accessible by bus. Visitors should check in advance with the National Observatories headquarters for current service arrangements, as connections are limited.

The facility houses China's first 2.16-meter telescope, capable of both optical imaging and spectroscopic observation. This instrument proved revolutionary for Chinese research and continues to operate today.