검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 56

        43.
        2001.04 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        We tested the characteristics of the BOAO Medium Dispersion Spectrograph (MDS) such as the CCD capabilities, wavelength shift by gravity direction variation, slit illumination function and efficiency. Then we calculated the appropriate exposure time to obtain the given S/N ratio for several given magnitudes. Also the remaining problems to be improved were discussed.
        4,000원
        46.
        2000.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The BOES (BOAO Echelle Spectrograph), a fiber-fed echelle spectrograph of the BOAO 1.8 m telescope, has been designed and now is being manufactured. The BOES follows a white pupil design collimated with two off-axis parabolic mirrors. The 136mm collimating beam leaving the 41.59 grooves/mm R4 echelle grating is refocused near the narrow folding mirror. Through the two cross-disperser prisms and ϕ250mm(f/1.5) ϕ250mm(f/1.5) transmission camera, the beam images on EEV 2k×4k 2k×4k CCD. The BOES can take the wavelength range of 3700 to 10100Å at a single spot with spectral resolution R = 20000 to 40000 depending on the fiber set employed. We describe the key sciences and performance, current status of construction, and future plan of the BOES.
        4,000원
        51.
        1997.12 구독 인증기관·개인회원 무료
        52.
        1996.12 KCI 등재 SCOPUS 구독 인증기관·개인회원 무료
        1 2 3