Institution: | (1) Physics Department, Tsing Hua University, 30043 Hsinchu, Taiwan, R.O. China;(2) Observatorio del Teide, Instituto Astrofisica de Canarias, Tenerife, Spain;(3) Department of Electro-Optics Engineering, Lien-Ho Junior College of Technology, 36012 Miaoli, Taiwan, R.O. China;(4) Huairou Solar Observing Station, Beijing Observatory, Beijing, P.R. China;(5) Big Bear Solar Observatory, California Institute of Technology, 91125 Pasadena, CA, USA;(6) Present address: Department of Mechanical Engineering, Chang-Gung College of Medical and Technology, Kwei-San, Taiwan, R.O. China |