Two soft X-ray telescopes (SXT-S, SXT-I), with focal lengths of 5 meters , focus light onto a soft X-ray Spectrometer (SXS), provided by NASA, with an energy range of 0.4-12 keV for high-resolution X-ray spectroscopy, and a soft X-ray imager (SXI), with an energy range of 0.3-12 keV.