| Optical design | Toroidal Grating Type IV VLS single optic |
| Focal length | 300 mm |
| Aperture | f/6 |
| Grating | 1200 gr/mm : 50-300 nm |
| Optic coating | MgF2 optimized at 121 nm standard or Pt option |
| Deviation angle | 70° |
| Dispersion | 2.3 nm/mm at 50 nm |
| Drive | Fast worm drive |
| Resolution | better than 0.2 nm |
| Vacuum | 5 10-6 mbar (HV version) 5 10-8 mbar (UHV version) |
| Pumping flange | DN63 CF |
| Entrance port | Micrometric slits (10 µm to 2 mm) |
| Exit port | Micrometric slits (10 µm to 2 mm) or Adjustable CCD port |
| Entrance flange | DN40 KF (DN40 CF) |
| Exit flange | DN40 KF for slit version (DN40 CF) DN100CF for CCD version |
| PC interface | Built-in USB2, no additional controller |





























