The image was created from Hubble data from proposal 14756: A. Simon (GSFC), M. Wong (UC Berkeley), and G. Orton (JPL-Caltech).
395 nm, 502 nm, and 631 nm
These images are a composite of separate exposures acquired by the WFC3 instrument on the Hubble Space Telescope. Several filters were used to sample narrow 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:
Blue: F395N (395 nm)
Green: F502N (502 nm)
Red: F631N (631 nm)