Gaia Data Release 3
Open Access

Fig. 17.

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Full width at half maximum measured in nm as a function of wavelength for a monochromatic signal in BP and RP mean spectra (blue crosses) and in the externally calibrated spectra (yellow triangles) compared to the width of one CCD pixel (grey squares) and the width of two pixels to represent the Nyquist sampling limit (dashed grey line).

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