MIRIS is the main payload of the STSAT-3 (Science and Technology Satellite 3) and the first infrared space telescope for astronomical observation in Korea. MIRIS space observation camera (SOC) covers the observation wavelength from 0.9μm to 2.0μm with a wide field of view 3.67∘×3.67∘ . The PICNIC HgCdTe detector in a cold box is cooled down below 100K by a micro Stirling cooler of which cooling capacity is 220mW at 77K. MIRIS SOC adopts passive cooling technique to chill the telescope below 200 K by pointing to the deep space (3K). The cooling mechanism employs a radiator, a Winston cone baffle, a thermal shield, MLI (Multi Layer Insulation) of 30 layers, and GFRP (Glass Fiber Reinforced Plastic) pipe support in the system. Optomechanical analysis was made in order to estimate and compensate possible stresses from the thermal contraction of mounting parts at cryogenic temperatures. Finite Element Analysis (FEA) of mechanical structure was also conducted to ensure safety and stability in launching environments and in orbit. MIRIS SOC will mainly perform Galactic plane survey with narrow band filters (Pa α and Pa α continuum) and CIB (Cosmic Infrared Background) observation with wide band filters (I and H) driven by a cryogenic stepping motor.

ABSTRACT
1. 서론
2. 시스템 주요 요구사항
3. 주요 구조 설계 및 제작
    3.1 MIRIS SOC의 구성
    3.2 방열판 (Radiator)
    3.3 윈스톤 콘 배플 (Winston Cone Baffle)
    3.4 Thermal Shield Box와 GFRP 파이프 지지대
    3.5 광기계부 (Optomechanic Parts)
    3.6 Dewar 및 Cold Box
    3.7 냉동기 (Cooler)
4. 시스템 해석
    4.1 우주관측카메라 (SOC)의 구조 해석
    4.2 우주관측카메라 (SOC)의 열 해석
5. 전체 조립
6. 결론 및 토의
참고 문헌

• 문봉곤(한국천문연구원) | B.-K. MOON (Korea Astronomy and Space Science Institute)
• 정웅섭(한국천문연구원) | W.-S. JEONG (Korea Astronomy and Space Science Institute)
• 차상목(한국천문연구원) | S.-M. CHA (Korea Astronomy and Space Science Institute)
• 이창희(한국천문연구원) | C.-H. REE (Korea Astronomy and Space Science Institute)
• 박성준(한국천문연구원) | S.-J. PARK (Korea Astronomy and Space Science Institute)
• 이대희(한국천문연구원) | D.-H. LEE (Korea Astronomy and Space Science Institute)
• 육인수(한국천문연구원) | I.-S. YUK (Korea Astronomy and Space Science Institute)
• 박영식(한국천문연구원) | Y.-S. PARK (Korea Astronomy and Space Science Institute)
• 박장현(한국천문연구원) | J.-H. PARK (Korea Astronomy and Space Science Institute)
• 남욱원(한국천문연구원) | U.-W. NAM (Korea Astronomy and Space Science Institute)
• Toshio Matsumoto(서울대학교, ISAS/JAXA)
• Seiji Yoshida(스미모토 중공업)
• 양순철(한국기초과학지원연구워) | S.-C. YANG (Korea Basic Science Institute)
• 이선희(시스웍(주)) | S.-H. LEE (Syswork Co. Ltd.)
• 이승우(한국항공우주연구원) | S.-W. RHEE (Korea Aerospace Research Institute)
• 한원용(한국천문연구원) | W. HAN (Korea Astronomy and Space Science Institute)