On 20 July 2004, the Thai cabinet approved the establishment of National Astronomical Research Institute of Thailand (Public Organization), under then Ministry of Science and Technology (now Ministry of Higher Education, Science, Research and Innovation) with its aim not only to mainly develop the astronomical research but also to undertake academic service for the public which includes the access to our telescopes located in 13 different locations as described below;

For academic service and public outreach (5x)

• Headquarters: Princess Sirindhorn AstroPark, Chiang Mai (in operation)
• Regional Observatory for the Public, Nakhon Ratchasima (in operation)
• Regional Observatory for the Public, Chachoengsao (in operation)
• Regional Observatory for the Public, Songkhla (in operation)
• Regional Observatory for the Public, Khon Kaen (under construction)

For research and scientific purpose (8x)

• Thai National Observatory (TNO)
• Thai National Radio Astronomy Observatory (TNRO)
• Thai Robotic Telescope Network:
  • Cerro- Tololo Inter-American Observatory (CTAO), Republic of Chile
  • Gao Mei Gu Observatory, Yunnan, People's Republic of China
  • Sierra Remote Observatory, California, United States of America
  • Spring Brook Observatory, New South Wales, Australia
  • Thai National Observatory, Royal Thai Air Force, Chiang Mai
  • Roque de Los Muchachos Observatory, La Palma, Kingdom of Spain