Soft X-ray Diffuse Background: ROSAT 0.25 keV All-Sky
1/4 keV diffuse background map from the ROSAT all-sky survey. The
projection is an Aitoff-Hammer equal-area in galactic coordinates with the
Galactic center in the middle. The image shows the general increase in
intensity from the Galactic plane to the poles, but it also shows considerable
detailed structure never before observed in this energy range.
Credit: The Max Planck Institute for Extraterrestrial Physics, Snowden
et al. 1995, ApJ, 454, 643