Youngwoo Choi(Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea)
Woojin Kwon(Department of Earth Science Education, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea, SNU Astronomy Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea)