| Take a look inside the spectrometer. The light enters through the front and then splits into two separate paths, one ending on the tracking CCD (Drawn in Green) and the other on the Imaging CCD (Drawn in Red). |
| o | Path to Tracking CCD |
| 1. | Incoming light reflects off mirror surrounding slit. |
| 2. | Light directed towards back of instrument off First Fold Mirror |
| 3. | Light travels through the Focus Achromat, focusing the beam |
| 4 | Light directed towards bottom of instrument off Second Fold Mirror |
| 5. | Light directed towards CCD chip off square mirror |
| 6. | Light enters Tracking CCD |
| o | Path to Imaging CCD |
| 1. | Incoming light travels through slit. |
| 2. | Light directed towards starboard of instrument off first square mirror. |
| 3. | Light directed back toward port of instrument off front Spherical Mirror |
| 4 | Light directed back toward starboard of instrument off diffracting mirror |
| 5. | Light directed back toward port of instrument off back Spherical Mirror |
| 6. | Light directed toward CCD chip off second square mirror |
| 7. | Light enters Imaging CCD |