Temps de pose...
Data Description: The image was created from Hubble data from proposal 12326: K. Noll (PI), Z. Levay, M. Mutchler, T. Borders, L. Frattare, M. Livio, C. Christian, and H. Bond (Hubble Heritage Team/STScI).
Exposure Date(s): December 17, 2010
Exposure Time: 5.9 hours
Filters: F390W (U), F475X (g), and F600LP (Red Longpass)
Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Release Date: April 20, 2011
This image is a composite of separate exposures acquired by the WFC3 instrument on HST. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:
F390W (U) blue
F475X (g) green
F600LP (Red Longpass) red
A la portée du premier venu, non ?