We encounter a variety of gas clouds, globular clusters, and galaxies far beyond our lifetime's reach. We see the clouds of interstellar gas called nebulae, perhaps the most stunning of all objects to image. We see globular clusters, spherical collections of various stars. And further out, we see the distant galaxies like our own located at inconceivable distances away. The Starlight Xpress MX5-C color CCD is well suited for recording the blue and green regions of the spectrum.
Galaxies emit in the blue because of the large amounts of dust.
Planetary nebula emit in the green region.