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.

• 김강민(한국천문연구원 보현산천문대/경북대학교 천문대기과학과) | KANG-MIN KIM (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory/Dept. of Astronomy & Atmospheric Sciences, Kyungpook National University)
• 김여정(한국천문연구원 보현산천문대) | KIM YEOJEONG (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory)
• 윤태석(경북대학교 천문대기과학과) | YOON TAE SEOG (Dept. of Astronomy & Atmospheric Sciences, Kyungpook National University)