== SDC7 Spectral resolution == • **Phase** : Any • **Status** : Draft • **Category** : Daytime calibration (C3) • **Recurrence** : once every month starting from commissioning. • **Duration** : 10 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: 0.5nm at 1.2 micron, LRS: 2 nm at 1.2 micron. **Notes** • Same as activity 9.4 in AD4 **LBTO support** **Associated SHARK-NIR personnel** **Date performed and by whom** **Comments** MB: If this happens in clean room at LBT, it might not be repeated in daytime commissioning, correct? maybe put 20 minutes -