Track maintenance machine and method for tamping a track

A track maintenance machine for tamping a track comprising:

• a plurality of sleepers;
• a ballast bed wherein said plurality of sleepers are supported in said ballast bed with rails fitted to said ballast bed;
• a machine frame that is mobile on on-track undercarriages;
• a tamping unit which comprises tamping tools to be lowered into the ballast bed and set to vibrate and to be squeezed together;
• a plurality of camera systems for transmitting real-time images to an output means wherein said output means is arranged upstream of the tamping unit in a working direction, wherein a first camera system is arranged upstream of the tamping unit in the working direction for recording a first surface area of the track as a first image section, and a second camera system is arranged downstream from the tamping unit in the working direction for recording a second surface area of the track as a second image section, wherein the plurality of camera systems are aligned wherein the recorded first and second image sections partly overlap, and wherein, the output means is equipped for providing the image sections in a merged image.