This is a fractal image. The spectral lens flare isn't added, it is actully part of the fractal. I am adding a category for fractals, and will be adding several more soon. See the search page to select the gallery.
This one has been sitting unfinished for a year, because the gray blast wave didn't like mixing with the fire, and kept crashing the computer. I figured out it would render once per loading of the image, only crashing the second attempt. So I reloaded after each test render, which let me finish.