Fig. 1.

image

Light curve of the occultation obtained with T60. The data are normalized to the unocculted flux. An error bar for each data point represents the detector readout noise, target shot noise, and sky background noise. The sky background noise is the dominant noise source since the background level was irregularly high because of the apparent proximity of Moon during the observations (angular distance to the object corresponds to ∼10deg). The solid curve corresponds to the best-fit synthetic light curve. The horizontal dashed line shows the best-fit Pluto + Charon contribution to the total flux, corresponding to 0.261. The residuals are shown in the lower panel.

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