Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Opto-mechanical Analysis for Primary Mirror of Earth Observation Camera of the MIRIS

MIRIS EOC 주경의 광기계 해석

  • Park, Kwi-Jong (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Moon, Bong-Kon (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Park, Sung-Jun (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Park, Young-Sik (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Lee, Dae-Hee (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Ree, Chang-Hee (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Nah, Jak-Young (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Jeong, Woog-Seob (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Pyo, Jeong-Hyun (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Lee, Duk-Hang (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Nam, Uk-Won (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute) ;
  • Rhee, Seung-Wu (Division of Science Satellite, Korea Aerospace Research Institute) ;
  • Yang, Sun-Choel (Division of Instrument Development, Korea Basic Science Institute) ;
  • Han, Won-Yong (Astronomy and Space Technology R&D Center, Korea Astronomy and Space Science Institute)
  • 박귀종 (한국천문연구원 천문우주기술개발센터) ;
  • 문봉곤 (한국천문연구원 천문우주기술개발센터) ;
  • 박성준 (한국천문연구원 천문우주기술개발센터) ;
  • 박영식 (한국천문연구원 천문우주기술개발센터) ;
  • 이대희 (한국천문연구원 천문우주기술개발센터) ;
  • 이창희 (한국천문연구원 천문우주기술개발센터) ;
  • 나자경 (한국천문연구원 천문우주기술개발센터) ;
  • 정웅섭 (한국천문연구원 천문우주기술개발센터) ;
  • 표정현 (한국천문연구원 천문우주기술개발센터) ;
  • 이덕행 (한국천문연구원 천문우주기술개발센터) ;
  • 남욱원 (한국천문연구원 천문우주기술개발센터) ;
  • 이승우 (한국항공우주연구원 과학위성실) ;
  • 양순철 (한국기초과학지원연구원 연구장비개발부) ;
  • 한원용 (한국천문연구원 천문우주기술개발센터)
  • Received : 2011.11.03
  • Accepted : 2011.11.29
  • Published : 2011.12.25
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Abstract

MIRIS(Multi-purpose Infra-Red Imaging System) is the main payload of the STSAT-3(Korea Science and Technology Satellite. 3), which is being developed by KASI(Korea Astronomy & Space Institute). EOC(Earth Observation Camera), which is one of two infrared cameras in MIRIS, is the camera for observing infrared rays from the Earth in the range of $3{\sim}5{\mu}m$. The optical system of the EOC is a Cassegrain prescription with aspheric primary and secondary mirrors, and its aperture is 100mm. A ring type flexure supports the EOC primary mirror with pre-loading in order to withstand expected load due to the shock and vibration from the launcher. Here we attempt to use the same mechanism by which a retainer supports the lens. Through opto-mechanical analysis it was confirmed that the EOC primary mirror is effectively supported.

한국천문연구원이 개발한 다목적적외선영상시스템(Multi-purpose IR Imaging System, MIRIS)은 과학기술위성 3호(STSAT-3)의 주탑재체이다. 지구관측카메라(Earth Observation Camera, EOC)는 MIRIS를 구성하는 두 개의 적외선 카메라 중에 하나로, 지구의 $3{\sim}5{\mu}m$ 파장대의 적외선을 관측하기 위한 카메라이다. EOC의 광학계는 카세그레인 방식으로써 구경이 100 mm이고, 주경과 부경은 모두 비구면 반사경이다. EOC 주경의 플렉서는 링 타입으로써 발사환경에서 주경이 겪을 수 있는 충격과 진동을 견디도록 예압을 가하며 주경을 지지한다. 이는 마치 리테이너로 렌즈를 지지하는 것과 같은 메커니즘으로 주경을 지지하기 위한 시도이다. 광기계 해석을 통해 EOC 주경이 효과적으로 지지되고 있음을 확인했다.

Keywords

References

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