We tested the characteristics of the newly made Long Slit Spectrograph (LSS) of the BOAO which replaced the Medium Dispersion Spectrograph (MDS) in the year of 2003. Performance test results on the spectrogram shift by gravity direction variation, slit illumination function, efficiency and the precision of the radial velocity measurements show the capabilities of the LSS are much improved in every respect comparing with those of the MDS.

• 김강민(한국천문연구원) | Kang-Min Kim (Korea Astronomy Observatory))
• 이병철(한국천문연구원) | Byeong-Cheol Lee (Korea Astronomy Observatory))
• 한인우(한국천문연구원) | Inwoo Han (Korea Astronomy Observatory))
• 윤태석(경북대학교 천문대기과학과) | Tae Seog Yoon (Dept. of Astronomy and Atmospheric Sciences, Kyungpook National University)