== SNM1 Filter wheels reproducibility monitoring == • **Phase** : Any • **Status** : Draft • **Category** : Daytime calibration (C3) • **Recurrence** : once every 6 months starting from commissioning. • **Duration** : 20 minutes **Description** • Estimate the positioning accuracy of the filter wheels. **Prerequisites** • Bad pixel map, Background or Dark, Flat-field, distortion map **Procedure** • For each given position of the filter, take an image in pupil imaging mode. **Success criteria** • expected accuracy of 0.1 pixel. **Notes** • Same as activity 9.7 in AD4 **LBTO support** **Associated SHARK-NIR personnel** **Date performed and by whom**