Abstract: An apparatus for moving an object in and/or out of a housing, for example for moving a support structure for a mask out of a housing of a lithographic apparatus. The apparatus includes a first guiding mechanism moveable in a first direction and which is rotatably connectable to a first part of the object, and a second guiding mechanism moveable in a second direction and which is rotatably connectable to a second part of the object, wherein the second part is different from the first part and the second direction is different from the first direction. The rotatable connections define a rotation around an axis which extends in a third direction which is substantially perpendicular to the first direction and the second direction.