It shows how light from the Sun and reflected sunlight from the Earth and its atmosphere enters and is manipulated by GOME-2's spectrometers.
| 1 - Disperser | 14 - 401 – 600 nm |
| 2 - Calibration slit | 15 - 240 – 315 nm |
| 3 - Detector | 16 - 311 - 403 nm |
| 4 - Double Brewster Prism | 17 - Electronics box |
| 5 - Telescope mirror | 18 - Channel # 1 |
| 6 - Predisperser Prism | 19 - Channel # 2 |
| 7 - Channel seperator | 20 - Grating # 1 |
| 8 - Grating # 3 | 21 - Grating # 2 |
| 9 - Grating # 4 | 22 - Calibration lamp |
| 10 - Beam splitter | 23 - Calibration Unit (CU) |
| 11 - Channel # 3 | 24 - Sun diffuser |
| 12 - Channel # 4 | 25 - Telescope mirrors |
| 13 - 590 -790 nm | 26 - Scan mirror |