This is a four-image NAVCAM mosaic taken by the Rosetta spacecraft on 24 September from a distance of 28.5 km from the centre of comet 67P/C-G. The images are processed to remove some striping and fixed noise patterns.

As the spacecraft moves closer to the comet, it is harder to create accurate mosaics because of combined effect of the comet rotation between the first and last images taken in the sequence (about 10 degrees over 20 minutes), and the fact that the spacecraft has been moving (up to a couple of km).

Image Credit: ESA