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| VHR640 | VHR1000 | |
|---|---|---|
Optical design | Czerny Turner | |
| Focal length | 640 mm | 1000 mm |
| Aperture | f/5.4 | f/9 |
| Gratings | Up to 4320 gr/mm available | Up to 4320 gr/mm available |
| Optic coating | Au, Pt or MgF2 optimized at 121 nm | |
| Spectral Range | From 100nm to 15 µm depending on selected grating(s) | |
| Dispersion | 0.37 nm/mm with 3600 gr/mm | 0.25 nm/mm with 3600 gr/mm |
| Drive | Fast worm drive | |
| Resolution | .008nm* | 0.005nm* |
| Vacuum | Few 10-5 mbar (HV) | |
| Pumping flange | DN63 LF | |
| Entrance port | Micrometric slits (10 µm to 2 mm) | |
| Exit ports | Micrometric slits (10 µm to 2 mm) or Adjustable CCD port | |
| Entrance flange | DN40 KF | |
| Exit flange | DN40 KF for slit port DN63CF for CCD port | |
| PC interface | USB2 | |
*with 3600gr/mm grating, slits at 10 µm x 2 mm
