Journal of Space Technology and Applications (우주기술과 응용)

The Korean Space Science Society (한국우주과학회)
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Development of Adaptive Optics System for the Geochang 100 cm Telescope

  • Hyung-Chul Lim (Korea Astronomy and Space Science Institute) ;
  • Francis Bennet (Research School of Astronomy and Astrophysics, Australian National University) ;
  • Sung-Yeol Yu (Korea Astronomy and Space Science Institute) ;
  • Ian Price (Research School of Astronomy and Astrophysics, Australian National University) ;
  • Ki-Pyoung Sung (Korea Astronomy and Space Science Institute) ;
  • Mansoo Choi (Korea Astronomy and Space Science Institute)
  • Received : 2024.05.10
  • Accepted : 2024.07.23
  • Published : 2024.08.31
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Abstract

Korea Astronomy and Space science Institute (KASI) partnered with the Australian National University (ANU) to develop the adaptive optics (AO) system at the Geochang observatory with a 100 cm optical telescope for multiple applications, including space geodesy, space situational awareness and Korean space missions. The AO system is designed to get high resolution images of space objects with lower magnitude than 10 by using themselves as a natural guide star, and achieve a Strehl ratio larger than 20% in the environment of good seeing with a fried parameter of 12-15 cm. It will provide the imaging of space objects up to 1,000 km as well as its information including size, shape and orientation to improve its orbit prediction precision for collision avoidance between active satellites and space debris. In this paper, we address not only the design of AO system, but also analyze the images of stellar objects. It is also demonstrated that the AO System is achievable to a near diffraction limited full width at half maximum (FWHM) by analyzing stellar images.

Keywords

Acknowledgement

This work was supported by the Korea Astronomy and Space Science Institute through the project of "Development of 30 km Long-range Free-space Quantum Key Distribution System and Core-technologies for Satellite Quantum Secure Communication" funded by the Ministry of Science and ICT (MSIT) of the Korean government.

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