Once the images are taken, they can be layered with the use of computer software to provide clearer, more vivid composite photos. (science.howstuffworks.com)
Composite photo of the slowest - spinning neutron star discovered so far (9 - 2016): background stars photographed in optical wavelengths; colorful cloud is the supernova remnant RCW 103, photographed in X-ray wavelengths, with the white neutron star at its center. (sciencedaily.com)
Composite photo created by undergraduate students in Ingi Agnarsson's laboratory at the University of Vermont. (sciencedaily.com)