Observation system and method

An observation system comprising

• a first optical path that is capable of receiving a first optical radiation emitted by a scene to be observed and including a main sensor configured to generate a first digital image from the first optical radiation;
• a second optical path that is capable of receiving a second optical radiation originating from the scene to be observed and including an optical attenuator having a variable opacity and capable of modifying a light intensity of the second optical radiation;
• a display configured to display a second digital image from the first digital image;
• and
• a third optical path coupled to the display and to the optical attenuator and designed to observe the second digital image and third optical radiation transmitted by the optical attenuator;
• wherein the observation system includes an electronic control unit including an image processing unit configured to determine a light intensity of at least one pixel of the first digital image generated by the main sensor and to compare the determined light intensity to at least one threshold, and the electronic control unit is configured to automatically output a command to increase the opacity of the optical attenuator when the determined light intensity is greater than or equal to said at least one threshold.