Optical image of the Crab Nebula in green (credit: NASA, ESA/Hubble), overlaid with an X-ray image in red, taken with Chandra (0.3–10 keV; credit: NASA/CXC/SAO, https://chandra.harvard.edu/photo/openFITS/crab.html). The circles show the 68% containment radii of the γ-ray emission measured with Fermi-LAT (> 1 GeV; blue) and H.E.S.S. (> 10 TeV; yellow), where the bands illustrate the statistical uncertainties. The crosses indicate the fitted position and its uncertainty for the respective data sets.