Occultations of WASP-12b, based on 4.5 μm observations with the Spitzer Space Telescope. The data were obtained and analyzed with a time sampling of 2 s, but for display purposes are shown here after averaging in time. For the top two light curves, the small blue points represent bins of 10 exposures (20 s). For the bottom two light curves, the small blue points represent bins of 14 exposures (28 s). In all cases, the large black points represent bins of 400 exposures (800 s). The red curves are based on the best-fitting model. As in Figure 1, each light curve is labeled with an orbit number relative to a fixed reference orbit.