Fig. 1. Fabricated mirrors in these wavebands. (a) Reflectanc curves of extreme ultraviolet multilayers; (b) reflectance curves of 140‒180 nm multilayers; (c) picture of mirror with four extreme ultraviolet multilayers; (d) picture of X-ray grazing-incidence mirror

Fig. 2. Picture of single photon counting array detector

Fig. 3. Images of resolution plate taken by single photon plane array detector. (a) Whole image; (b) partial enlargement image

Fig. 4. Test and calibration device for optoelectronic components in X-ray-extreme ultraviolet-far ultraviolet bands

Fig. 5. Performance test, calibration, and environment experimental device for overall unit in X ray-extreme ultraviolet-far ultraviolet bands

Fig. 6. Diagram of principle of high-precision and high-speed image stabilization

Fig. 7. Variance of solar pointing signal measured by guide telescope in orbit

Fig. 8. Sketch of optomechanical structure for X ray-extreme ultraviolet dualband imager^[33]

Fig. 9. Solar images captured by solar X-EUV imager of FY-3E^[33]. (a) 0.6‒8.0 nm X ray images; (b) 19.5 nm extreme ultraviolet image

Fig. 10. Sketchs of optical paths of spectrometer. (a) X ray channel; (b) extreme ultraviolet channel

Fig. 11. Solar X ray and 19.5 nm irradiations in 2022 and 2023

Fig. 12. First solar images captured by SDI (12.6 nm solar images on November 25, 2022). (a) Whole image; (b) partial enlargement images

Fig. 13. Optical system of LST/SCI dualband solar coronagraph^[49]

Fig. 14. 121.6 nm prominence picture captured by SCI on March 7, 2023

Fig. 15. Diagram of optical path of extreme ultraviolet camera of Chang’e-3

Fig. 16. 30.4 nm panorama image of Earth’s plasmasphere captured by extreme ultraviolet camera of Chang’e-3 on lunar surface

Fig. 17. Wide-field auroral imager of FY-3D. (a) Optical path; (b) captured auroral image