Simulated H band surface brightness maps for the Default model with density scaled by a factor of 0.6 during the scattering computations and with different assumptions on the strength of the radiation field and on the sky brightness behind the cloud. Shown on the first row is the observed H band surface brightness map. Shown on the rows 2–4are the simulated H band maps, for which the strength of the radiation field has been scaled with a factor between 1 and 3, and the intensity of the background has been scaled between factors 1 and 3.0.