Fig. 4From: Miniature lightweight X-ray optics (MiXO) for surface elemental composition mapping of asteroids and cometsAll sky soft X-ray background image in Galactic coordinates by ROSAT/PSPC after removing bright point sources (red 0.1–0.4 keV, green 0.5–0.9 keV, blue 0.9–2.0 keV, Courtesy of Max-Planck-Institut for extraterrestrische Physik)Back to article page