The Solar X‐EUV Imaging Telescope

The Solar X-EUV imaging telescope (XEIT), which operates in the 4-100Awavelength bands and the 195A EUV emission line, is designed to monitor and predict solar activities resulting in variations of space weather. The XEIT is dedicated to space weather forecast studies. It can provide solar full disk images of high resolution for it has a field of view of 45' and angular resolution of 50˝. This paper presents the basic designs of the XEIT, the sensitivities to the coronal plasma of different temperature, the responses to different solar phenomena, and the filter combination in pairs for reconstructing parameters of solar phenomena. The XEIT integrates the gracing incidence telescope and the normal incidence telescope and extends the imaging capabilities of only X-ray. So it can observe more precursors and indicators of solar eruptions. The XEIT is the newest type of solar storm monitors at present compared with the international similar instruments.