30 January 2024 to 2 February 2024
Chiang Mai
Asia/Bangkok timezone


For those who would like to join the excursion, please do the registration again here within 20 December 2023 (Thailand Local Time) 



Exploring the Thai National Observatory, Doi Inthanon National Park

An exciting excursion to the Thai National Observatory, Doi Inthanon National Park has been scheduled for February 1, 2024.

During this outing, participants will have the opportunity to explore the captivating Thai National Observatory and immerse themselves in the stunning beauty of Doi Inthanon National Park.

Please note that there is a park entrance fee of 300 THB plus the twin pagodas entrance fee of 200 THB (Totally 500 THB)Participants who choose to join this enriching excursion will be responsible for covering this fee. This fee contributes to the maintenance and conservation of the park's natural wonders.

Don't miss out on this chance to enhance your EAYAM 2024 experience by engaging with both astronomical marvels and the breathtaking natural landscapes of Thailand. Further details and instructions on the excursion will be provided as the event approaches.

The Thai National Observatory is the main facility of the National Astronomical Research Institute of Thailand, located at Km. 44 on Doi Inthanon (the highest  mountain in Thailand), Chiang Mai, Thailand, which is also renowned for the superb climate and tourist attraction. At 2,457 meters above the mean sea level, the observatory has superb seeing conditions suitable for advanced research in Astronomy and Astrophysics. TNO is set to become one of Asia's most advanced facilities in optical astronomy.

The Observatory houses a 2.4-meter reflecting telescope with an alt-azimuth drive system and a Ritchey-Chretien optical system.. The drive system has been synchronized with automatic control of the dome structure. The telescope is manufactured at EOST in Tucson, Arizona, USA. The 2.4 m diameter primary mirror has been fabricated and undergone fine polishing at LZOS facility in Russia. The observatory will therefore play a significant role in supporting cutting edge research and international collaboration.

Doi Inthanon is among the most renowned national parks in Thailand. It boasts captivating waterfalls, several trails, remote villages, viewpoints, opportunities for sunrise/sunset watching, birdwatching, and consistently cool weather at higher elevations throughout the year. The primary park entrance is located approximately 70 km southwest of Chiang Mai city centre.