Medical imaging system, deflection unit and method for calibrating a medical imaging system

A robotic medical microscope for imaging an object, comprising:

• an imaging unit comprising at least one imaging device and
• a deflection unit comprising at least one imaging deflection member,
• wherein the imaging unit is movably supported by a robotic arm,
• wherein the at least one imaging deflection member is configured to be selectively disposed in an optical path of the imaging device to selectively deflect an imaging beam such that the imaging device provides an inclined or horizontal viewing angle while the imaging unit remains in a substantially upright position without being inclined with respect to a vertical position;
• wherein the deflection unit provides spatially enclosed separated ducts for comprising the at least one imaging deflection member.