All Figures

	Figure 1: Frame of the Neptune system as observed on 08/09/2002, at  UTC. The satellite Proteus is just to the right of its label and on the edge of the scattered light of Neptune. The CCD has  square pixels with sides 22 m. The exposure time was .
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In the text

	Figure 2: Proteus and Triton in their orbits on each observation night. The initial 2000 and 2001 data are also shown for completeness.
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In the text

	Figure 3: The picture shows two 3D views of one Proteus observation. The tallest feature is Neptune's light. Proteus is seen as a separate structure on the lower slope of Neptune. Although smaller than the structures of the two field stars shown, the structure of Proteus is clearly higher than the noise background, and distinct from Neptune's scattered light distribution.
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In the text

Figure 4: Graphical representation of the removal of the scattered light of the planet for one CCD line. In a), the sky is fitted for all line pixels except for the five inside the rectangle. In b), the sky fit was subtracted from every pixel count and the resulting points were fitted with a Gaussian curve. Observe that the sky level is at about -10 counts and that the new image of Proteus is above this sky level.

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In the text

	Figure 5: Observed minus calculated residuals for Proteus relative to Triton. The (O-C) are given in arcsecond.
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In the text