A sighting device for a vehicle , the vehicle including a wall delimiting an interior space from an exterior space , the sighting device including: - a support mounted rotating relative to the wall around a first axis (Y1), the support defining an interior volume , - an optronic head for indirect observation of a first part of the environment of the space outside the vehicle , the optronic head being mounted rotating on the support around a second axis (X2), the second axis (X2) being perpendicular to the first axis (Y1), - a direct optical path for observation of a second part of the environment of the space outside the vehicle , the optical path comprising: - a collecting optical unit adapted to collect part of the environment of the space outside the vehicle , the collecting optical unit rotating around the second axis (X2), and - an optical transport system adapted to transport the image collected by the collecting optical unit to at least one predefined location in the interior space , the optical transport system including a plurality of optical components, part of the components being in the interior space and the other part of the components being in the interior volume of the support , - a drive means driving the optronic head and the collecting optical unit so that, when the optronic head performs a rotation by a first given angle around the second axis (X2), the collecting optical unit performs a rotation by a second given angle around the second axis (X2), the ratio between the two angles being between 0.99 and 1.01, preferably equal to 1. - a support mounted rotating relative to the wall around a first axis (Y1), the support defining an interior volume , - an optronic head for indirect observation of a first part of the environment of the space outside the vehicle , the optronic head being mounted rotating on the support around a second axis (X2), the second axis (X2) being perpendicular to the first axis (Y1), - a direct optical path for observation of a second part of the environment of the space outside the vehicle , the optical path comprising: - a collecting optical unit adapted to collect part of the environment of the space outside the vehicle , the collecting optical unit rotating around the second axis (X2), and - an optical transport system adapted to transport the image collected by the collecting optical unit to at least one predefined location in the interior space , the optical transport system including a plurality of optical components, part of the components being in the interior space and the other part of the components being in the interior volume of the support , - a collecting optical unit adapted to collect part of the environment of the space outside the vehicle , the collecting optical unit rotating around the second axis (X2), and - an optical transport system adapted to transport the image collected by the collecting optical unit to at least one predefined location in the interior space , the optical transport system including a plurality of optical components, part of the components being in the interior space and the other part of the components being in the interior volume of the support , - a drive means driving the optronic head and the collecting optical unit so that, when the optronic head performs a rotation by a first given angle around the second axis (X2), the collecting optical unit performs a rotation by a second given angle around the second axis (X2), the ratio between the two angles being between 0.99 and 1.01, preferably equal to 1. <EOS>