Software for producing trichromatic images in astronomy |
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Authors: | Sébastien Morel Emmanuel Davoust |
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Institution: | (1) UA 285, Observatoire Midi-Pyrénées, 14 Avenue Belin, F-31400 Toulouse, France;(2) Ecole Supérieure d'Electricité, 2 rue Belin, F-57078 Metz Cedex 3, France |
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Abstract: | We present a software package for combining three monochromatic images of an astronomical object into a trichromatic color image. We first discuss the meaning of true colors in astronomical images. We then describe the different steps of our method, choosing the relevant dynamic intensity range in each filter, inventorying the different colors, optimizing the color map, modifying the balance of colors, and enhancing contrasts at low intensity levels. While the first steps are automatic, the last two are interactive. |
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