Microscope system and microscope control device

A microscope control device for controlling a microscope which is provided with a light source, an objective lens, a stage, a two-dimensional image sensor that captures an image of a specimen placed on the stage, and a focusing device that changes a distance between the objective lens and the stage, the microscope control device comprising:

• a control circuit, wherein the control circuit:
• executes, during a movement period in which the stage moves in a direction orthogonal to an optical axis of the objective lens, focus control for controlling the focusing device based on focus evaluation information detected during the movement period, and exposure control for controlling an exposure period of the two-dimensional image sensor,
• executes light emission control that causes the light source to emit light with different light emission intensities during the exposure period and during a focus evaluation period in which the focus evaluation information is detected,
• changes the light emission intensity of the light source to a second light emission intensity larger than a first light emission intensity during the focus evaluation period, based on position information of the stage, and
• sets the exposure period within a period in which the light source emits light at the second light emission intensity.