An antenna comprising: - a radiation emitting/receiving element configured to emit radiation along a first direction and/or receive radiation from the first direction, - a base , - a mount system, the radiation emitting/receiving element and the base connected to the mount system, where the mount system comprises at least a first and a second mount part, - a first drive configured to rotate the first mount part in relation to the base around a first axis , - a second drive configured to rotate the second mount part in relation to the first mount part around a second axis , - a third drive configured to rotate the radiation emitting/receiving element in relation to the second mount part around a third axis , - a controller configured to control the first, second and third drives, characterized in that the controller is configured to: - maintain a predetermined relative direction between the base and the first direction while operating at least one of the drives to rotate at least two of: - the first mount part at least 2 degrees around the first axis in relation to the base, - the second mount part at least 2 degrees around the second axis in relation to the first mount part, and - the radiation emitting/receiving element at least 2 degrees around the third axis in relation to the second mount part. - a radiation emitting/receiving element configured to emit radiation along a first direction and/or receive radiation from the first direction, - a base , - a mount system, the radiation emitting/receiving element and the base connected to the mount system, where the mount system comprises at least a first and a second mount part, - a first drive configured to rotate the first mount part in relation to the base around a first axis , - a second drive configured to rotate the second mount part in relation to the first mount part around a second axis , - a third drive configured to rotate the radiation emitting/receiving element in relation to the second mount part around a third axis , - a controller configured to control the first, second and third drives, characterized in that the controller is configured to: - maintain a predetermined relative direction between the base and the first direction while operating at least one of the drives to rotate at least two of: - the first mount part at least 2 degrees around the first axis in relation to the base, - the second mount part at least 2 degrees around the second axis in relation to the first mount part, and - the radiation emitting/receiving element at least 2 degrees around the third axis in relation to the second mount part. - maintain a predetermined relative direction between the base and the first direction while operating at least one of the drives to rotate at least two of: - the first mount part at least 2 degrees around the first axis in relation to the base, - the second mount part at least 2 degrees around the second axis in relation to the first mount part, and - the radiation emitting/receiving element at least 2 degrees around the third axis in relation to the second mount part. - the first mount part at least 2 degrees around the first axis in relation to the base, - the second mount part at least 2 degrees around the second axis in relation to the first mount part, and - the radiation emitting/receiving element at least 2 degrees around the third axis in relation to the second mount part. <EOS>