First light galaxies have predictable linear clustering, and are expected to produce fluctuations with a characteristic spatial power spectrum, which peaks at an angular scale of ~ 10 arcminutes and in the 1―2 μm spectral regions. The Cosmic Infrared Background ExpeRiment 2 (CIBER2) is a dedicated sounding rocket mission for measuring the fluctuations in the extragalactic infrared background light, following up the previous successful measurements of CIBER1. With a 28.5 cm telescope accompanied with three arms of camera barrels and a dual broadband filter on each H2RG (λc = 2.5 μm) array, CIBER2 can measure 6 bands of wide field (1.1 × 2.2 degrees) up to 3 AB magnitudes deeper than CIBER1. This project is leaded by California Institute of Technology/Jet Propulsion Laboratory, collaborating internationally with Institute of Space and Astronautical Science in Japan, Korea Astronomy and Space Science Institute, Korea Basic Science Institute, and Seoul National University. The Korean team is in charge of 1) one H2RG scientific array, 2) ground station hardware and software, 3) telescope lenses, and 4) flight and test bed electronics fabrication. In this paper, we describe the detailed activities of the Korean participation as well as the current status of the CIBER2 project.

<인터스텔라>의 서사에서 과학은 중요한 역할을 한다. 과학으로 망가진 지구 를 구하려고 새로운 과학을 기대하는 내용뿐만 아니라 영화 자체가 과학적으로 엄밀하게 기획, 제작되었다. C. S. 루이스의 침묵의 행성 밖에서 는 기독교 관 점에서 쓰인 반과학적 SF 소설이다. 주인공 랜섬이 미친 과학자들에 의해 화성 으로 납치되어 희생물로 바쳐질 뻔한 이야기에서 루이스는 20세기 초 유행했던 과학만능주위를 알레고리라는 장치를 통해 호되게 비판한다. 두 작품은 과학에 대해 완전히 다른 입장을 취하고 있지만 우주에 대한 묘사는 유사하다. 루이스 의 우주는 웰즈와 같은 당대의 SF 작가들이 상상한 무섭거나 차갑지 않고 중세 인들의 우주처럼 밝고 따스하다. 놀란의 블랙홀은 빛도 벗어날 수 없는 무자비 하고 칠흑 같은 감옥이 아니라 모든 시간과 공간을 관통한 의사소통이 가능한 곳이다. 이 유사한 우주의 묘사를 통해 본 논문은 과학이 지배하는 현대사회에 서 종교가 살아남을 수 있는 가능성을 엿보려한다. 종교뿐만 아니라 과학도 세 계를 이해하는 방식은 해석이다. 비록 과학이 자연이 들려주는 이야기를 더 잘 들을 수 있을지라도 과학 역시 해석을 통해서만 자연을 이해할 수 있다.

NATM의 미세 구조는 SEM, FT-IR, 인장특성, 그리고 [NCO]/[OH]의 mole %, 입도분석에 의해 측정하였다. 친환경적인 NATM에 관한 관심이 고조됨에 따라 스테인레스 등의 금속코팅에 더욱더 중요한 무용제 도료의 발전을 이끈다. 우리는 스테인레스 스틸의 부식을 방지할 수 있는 NATM(New Austria Tunnel Method)의 수지를 합성하였다. 폴리우레탄과 에폭시로 합성한 혼성 수지는 일반적 NATM 수지와 도료와 비교하여 강도와 내구력이 매우 양호하다. 혼성수지는 폴리올, 에폭시, MDI, 실리콘 계면활성제, 촉매, 가교제, 충전제로 구성된다. 충전제인 fume silica는 경화속도를 가속시킬 뿐만 아니라 열적 장벽으로 물성이 우수함을 나타냈다. NATM 수지의 기계적 특성은 [NCO]/[OH]의 mole%와 fume silica가 증가함에 따라 강도가 증가하였다. 결론적으로 가교제와 fume silica가 함유된 혼성수지의 미세구조는 스테인레스 스틸같은 금속물질의 열경화코팅을 위한 좋은 물질이다.

We have developed a data integration system for ground-based space weather facilities in Korea Astronomy and Space Science Institute (KASI). The data integration system is necessary to analyze and use ground-based space weather data efficiently, and consists of a server system and data monitoring systems. The server system consists of servers such as data acquisition server or web server, and storage. The data monitoring systems include data collecting and processing applications and data display monitors. With the data integration system we operate the Space Weather Monitoring Lab (SWML) where real-time space weather data are displayed and our ground-based observing facilities are monitored. We expect that this data integration system will be used for the highly efficient processing and analysis of the current and future space weather data at KASI.

Recent technical trend on telerobotics, teleoperations and telepresence for Mars rover as well as Miniature Thermal Emission Spectrometer etc. for Mars rock analysis by Rover are introduced and investigated. Scientific informations on telerobotics, teleoperations and telepresence are analysed. Researches on telepresence and telerobotics are promoted together with research on teleoperations. Derivative effect and innovation opportunity are created through space exploration technology and sustaining development of national technology are maintained.

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.

The International Space Station (ISS) orbits the Earth within the inner radiation belt, where high-energy protons are produced by collisions of cosmic rays to the upper atmosphere. About 6 astronauts stay in the ISS for a long period, and it should be important to monitor and assess the radiation environment in the ISS. The tissue equivalent proportional counter (TEPC) is an instrument to measure the impact of radiation on the human tissue. KASI is developing a TEPC as a candidate payload of the ISS. Before the detailed design of the TEPC, we performed simulations to test whether our conceptual design of the TEPC will work propertly in the ISS and to predict its performance. The simulations estimated that the TEPC will measure the dose equivalent of about 1:1 mSv during a day in the ISS, which is consistent with previous measurements.

We have developed superconducting mixer receivers for 129 GHz VLBI observation in Korean VLBI Network (KVN). The developed mixer has a radial waveguide probe with simple transmission line L-C transformer as a tuning circuit to its 5 series-connected junctions, which can have 125 - 165 GHz as the operation radio frequency (RF). For intermediate frequency (IF) signal path a high impedance quarter-wavelength line connects the probe to one end of symmetric RF chokes. The double side band (DSB) receiver noise of the mixer was about 40 K over 4 - 6 GHz IF band, whereas we achieved the uncorrected single side band (SSB) noise temperature of about 70 K and better than 10 dB image rejection ratio in 2SB configuration with 8 - 10 GHz IF band. Insert-type receiver cartridges employing the mixers have been under commission for KVN stations.

Cosmological linear perturbation theory has fundamental importance in securing the current cosmological paradigm by connecting theories with observations. Here we present an explanation of the method used in relativistic cosmological perturbation theory and show the derivation of basic perturbation equations.