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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References
BalasubramanianR., AllebachJ.P., BoumanC.A., 1994, J. Opt. Soc. Am. A11, 2777
Bragg, D., 1992, Graphic Gems Series, Ed. Academic Press, 3, 20
GrosbølP., HartenR.H., GreisenE.W., WellsD.C., 1988, A&AS 73, 359
HeckbertP., 1982, Computer Graphics, 16, 297
Jones, O., 1989, Introduction to the X Window System, Ed. Prentice Hall
Le Veilieppe, P., 1992, La Revue de l'Utilisateur PC, no78, 49
LindeY., BuzoA., GrayR.M., 1980, IEEE Trans. Commun., COM-28, 84
OrchardM.T., BoumanC.A., 1991, IEEE Trans. Signal Process., 39, 2677
RobertsonA., 1992, Physics Today, 45, no12, p. 24
SteffeyP.C., 1992, Sky & Telescope, 84, 266
WellsD.C., GreisenE.W., HartenR.H., 1981, A&AS 44, 363
Wray, J.D., 1988, Color atlas of galaxies, Cambridge U. Press.
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Morel, S., Davoust, E. Software for producing trichromatic images in astronomy. Experimental Astronomy 6, 223–234 (1995). https://doi.org/10.1007/BF00418321
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DOI: https://doi.org/10.1007/BF00418321