Secondary eclipse of WASP-10b in the Ks-band obtained in the joint-MCMC analysis. The small black circles show the unbinned data points. The solid line represents the best occultation model obtained from the joint-MCMC analysis, after removing the contribution of the systematics. The dotted lines illustrate the ingress and egress positions of the expected eclipse for a circular orbit, and the dashed lines show the phase shift given by the model. The residuals are presented in the lower panel.