Star tracker acquisitions from SWARM mission taken since mission launch up to end of 2018
Link: https://esa.github.io/str4sd/
Example with moving object (item in center left): https://esa.github.io/str4sd/?u=Swarm-B/2015/January/2015-01-13T15:30:10.000Z&cit=GIF
Same image as above using diferential comparison: https://esa.github.io/str4sd/?u=Swarm-B/2015/January/2015-01-13T15:30:10.000Z&cit=DIFF_PNG