Location    Km. 44 on Doi Inthanon (the highest  mountain in Thailand), Chiang Mai, Thailand.

Coordinates 18? 34? N   98? 28? E

Altitude 2,457 meter

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     The Thai National Observatory is located near the summit of Doi Inthanon, the highest point in Thailand.   At 2,457 meters above sea level, the observatory is above much of the surrounding weather, and is beyond the light pollution from large cities.   During observing season (roughly November through May), typical seeing is around 2 arcseconds.

Inthanon National Park, located in Chiang Mai Province, hosts other scientific and agriculatural research projects, and is a popular tourist destination thanks to its many natural features and thriving ecosystem.   It is near the City of Chiang Mai, Thailand's second largest city, and home to NARIT headquarters