IRAC 8-μm HD 189733b’s transit and occultation ingress/egress photometry binned per 1 min and corrected for the systematics (black dots) with their 1σ error bars (red triangles) and the best-fitting eclipse model superimposed (in red). The green dots present the residuals from Agol et al. (2010, their Fig. 12), obtained using an average of the best-fit models from 7 individual eclipse analyses. Left: phase-folded transits show no significant deviation to the transit of a disk during ingress/egress. Right: phase-folded occultation ingress/egress deviate from the eclipse of a uniformly-bright disk, highlighting the secondary-eclipse scanning of HD 189733b’s dayside. Top: phase-folded and corrected eclipse photometry. Bottom: phase-folded residuals.