Fig. 1. Optical layout of imaging spectrometer

Fig. 2. Scanning working mode on ground for EMI spectrometer

Fig. 3. Illustration of absorption signal in differential spectral range

Fig. 4. Relative intensity of solar spectra

Fig. 5. QE charts of CCD with and without UV coating

Fig. 6. Block diagram of imaging circuit

Fig. 7. Engineering module of CCD imaging circuit

Fig. 8. Small cooling vacuum vessel dedicated for test on detector

Fig. 9. Instrument for flat field test and photon transfer curve plotting

Fig. 10. Photon transfer curves for full-frame and 4-binning image