• 제목/요약/키워드: astronomy and space science

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Giant Magellan Telescope Project in 2014

  • Park, Byeong-Gon;Yuk, In-Soo;Lee, Jae-Joon;Yoon, Yang-Noh;Hwang, Narae;Park, Chan;Kim, Jihun
    • 천문학회보
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    • 제39권2호
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    • pp.100.1-100.1
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    • 2014

  • Korea Astronomy and Space Science Institute (KASI) has been participating in the Giant Magellan Telescope (GMT) project since 2009. In 2014, GMT project has passed its important milestones toward construction of the telescope and observatory facilities. We will report the recent achievements and current status of the project in this contribution.

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차세대 위성항법체계 갈릴레오 센서스테이션 유치 후보지 전파 수신환경 조사: I. KVN 탐라전파천문대 인근 부지에 대한 2006년 한국천문연구원 조사 결과 (RF ENVIRONMENT TEST ON A PROPOSED SITE FOR THE SENSOR STATION OF THE NEXT GENERATION SATELLITE NAVIGATION SYSTEM, GALILEO: I. THE RESULT OF THE TEST ON THE VICINITY OF KVN TAMLA SITE IN THE YEAR OF 2006 BY KASI)

  • 조중현;제도흥;조성기;최병규;백정호;이대규;정현수;임형철;조정호;이우경;정성욱;박종욱;최남미
    • Journal of Astronomy and Space Sciences
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    • 제25권1호
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    • pp.43-52
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    • 2008

  • 2007년에 Giove-A 실험위성의 항법메시지 송신 시험이 성공적으로 끝마침으로써, 차세대 위성 항법시스템인 갈릴레오 계획이 초기궤도 검증단계를 앞두고 있다. 한국천문연구원의 우주측지연구부와 전파천문연구부는 제주 탐라대학교 내 유치 후보지에 대한 갈릴레오 센서 스테이션 전파 수신환경 공동조사를 2006년 8월 3일부터 5일까지 실시했다. 전계강도 스펙트럼은 전 대역$(800{\sim}2000MHz)$과 내 대역(E5, E6, L1 밴드)에 대해서 24시간 주파수 영역 관측을 했다. 이 단계에서 관측된 강한 내 대역 간섭 신호에 대해서 시간영역 분석을 했다.

  • https://doi.org/10.5140/JASS.2008.25.1.043 인용 PDF KSCI

CIB Observational Plan with MIRIS

  • 정웅섭;;이성호;;안경진;이창희;이형목;구본철;차상목;박성준;진호;한원용;박장현
    • 천문학회보
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    • 제33권2호
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    • pp.48.2-48.2
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    • 2008

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Precise Prediction of Optical Performance for Near Infrared Instrument Using Adaptive Fitting Line

  • Ko, Kyeongyeon;Han, Jeong-Yeol;Nah, Jakyoung;Oh, Heeyoung;Yuk, In-Soo;Park, Chan;Chun, Moo-Young;Oh, Jae Sok;Kim, Kang-Min;Lee, Hanshin;Jeong, Ueejeong;Jaffe, Daniel T.
    • Journal of Astronomy and Space Sciences
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    • 제30권4호
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    • pp.307-314
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    • 2013

  • Infrared optical systems are operated at low temperature and vacuum (LT-V) condition, whereas the assembly and alignment are performed at room temperature and non-vacuum (RT-NV) condition. The differences in temperature and pressure between assembly/alignment environments and operation environment change the physical characteristics of optical and opto-mechanical parts (e.g., thickness, height, length, curvature, and refractive index), and the resultant optical performance changes accordingly. In this study, using input relay optics (IO), among the components of the Immersion GRating INfrared Spectrograph (IGRINS) which is an infrared spectrograph, a simulation based on the physical information of this optical system and an actual experiment were performed; and optical performances in the RT-NV, RT-V, and LT-V environments were predicted with an accuracy of $0.014{\pm}0.007{\lambda}$ rms WFE, by developing an adaptive fitting line. The developed adaptive fitting line can quantitatively control assembly and alignment processes below ${\lambda}/70$ rms WFE. Therefore, it is expected that the subsequent processes of assembly, alignment, and performance analysis could not be repeated.

  • https://doi.org/10.5140/JASS.2013.30.4.307 인용 PDF KSCI

Experimental System for Solar Image Stabilization

  • Nah, Ja-Kyoung;Choi, Seong-Hwan;Moon, Yong-Jae;Park, Young-Deuk
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2006년도 한국우주과학회보 제15권2호
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    • pp.87-87
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    • 2006

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