The diffractometer automatically change the intensity of the light in the centring procedure according to the zoom level. This might be a problem when working with light sensitive samples. To prevent this the best solution is to manually set the intensity of the light, which will not change automatically anymore.

Inside the hutch, below the experimental table you can find the light source (as in photo). Back Light and Front Light should be properly labelled. Change the two switches on the front panel from Remote to Local and adjust the light intensity as desired with the knob. Once finished switch them back to Remote

light control