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대형 적외선 우주망원경 SPICA/FPC-G의 정밀 별추적 요구사항과 타당성 연구
정웅섭,이대희,표정현,문봉곤,박성준,이창희,박영식,한원용,남욱원,Jeong, Woong-Seob,Lee, Dae-Hee,Pyo, Jeonghyun,Moon, Bongkon,Park, Sung-Joon,Ree, Chang Hee,Park, Youngsik,Han, Wonyong,Nam, Ukwon,Matsumoto, Toshio 한국천문학회 2012 天文學論叢 Vol.27 No.5
The SPICA (SPace Infrared Telescope for Cosmology & Astrophysics) project is a next-generation infrared space telescope optimized for mid- and far-infrared observation with a cryogenically cooled 3m-class telescope. It will achieve the high resolution as well as the unprecedented sensitivity from mid to far-infrared range. The FPC (Focal Plane Camera) proposed by KASI as an international collaboration is a near-infrared instrument. The FPC-S and FPC-G are responsible for the scientific observation in the near-infrared and the fine guiding, respectively. The FPC-G will significantly reduce pointing error down to below 0.075 arcsec through the observation of guiding stars in the focal plane. We analyzed the pointing requirement from the focal plane instruments as well as the error factors affecting the pointing stability. We also obtained the expected performance in operation modes. We concluded that the FPC-G can achieve the pointing stability below 0.075 arcsec which is the requirement from the focal plane instruments.