== SDC7 Spectral resolution == - **Phase** : Any - **Status** : Draft - **Category** : Daytime calibration (C3) - **Recurrence** : once every month starting from commissioning. - **Duration** : 20 minutes **Description** - Measure the spectral resolution for the LSS observing mode. **Prerequisites** - Bad pixel map, Background frames **Procedure** - This calibration is performed illuminating the slit with the instrument spectral calibration lamps with known characteristics (5 emission lines). A background with lamps switched off is required. **Success criteria** - Accuracy of MRS: 0.5 nm at 1.2 um, LRS: 2 nm at 1.2 um. **Templates** **Notes** - Same as activity 9.4 in AD4 **LBTO support** **Date performed and by whom**