Solar Extreme Ultraviolet Multichannel Imager

Solar extreme ultraviolet imaging plays an important role in space weather research and forecasting. Many nations have developed such kind of instruments for satellites and obtained valuable data. China has paid more attention to such research in recent years. This solar extreme ultraviolet multichannel imager that this paper presented can photograph corona and chromo sphere at four different radiation lines simultaneously. Comparison and inter-calibration with other similar instruments and more experiments can be done in the future. It takes a few resource of satellites while contributes much observation. Its application in orbit will raise up the level of space weather research and forecasting greatly.