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          A team led by Prof. Bing-Chih Chen (Institute od Space and Plasma Sciences) and Prof. Charles, Lin (Department of Earth Sciences) developed the DOTCam (Dual-band Optical Transient Camera) as a part of the RISESat project, a microsatellite mission and a small satellite development activity in Japan. The objective is to observe Transient Luminous Events (TLEs) in the Earth’s upper atmosphere. With a combination of selected wavelength, the DOTCam can detect different types of TLEs via on-board image processing technology. RISESAT operates in the Earth Limb pointing mode during the DOTCam operation, which is limited to the eclipse side of the earth orbit.