Fig. 5.

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Limiting magnitude at 5σ (diameter of the aperture = 2×FWHM) and 3σ surface brightness limit (10″×10″ area) as a function of the square root of the exposure time in the FUV (top) and NUV (bottom) images. With some scatter, the depth of the data follows nicely the theoretical expectation (). The numbers associated with the symbols indicate the NGC number of the galaxy observed by LIGHTS.
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