Smoothed X-ray Image
This Chandra image has been smoothed to enhance the diffuse features. The soft (lower energy) X-ray point sources are shown in red, and hard X-ray sources, as well as hard X-ray diffuse emission, are displayed in blue. Sources in purple are in-bewteen soft and hard.
(Credit: NASA/GSFC/K.Ebisawa et al.)

Scale: Image is 22.5 arcmin per side.

X-ray/Optical Composite
This composite image shows the Chandra observations (inset) in relation to the familiar optical view of the Milky Way. The recent Chandra data focus on a tiny region in the constellation Scutum.
(Credit: X-ray: NASA/GSFC/K. Ebisawa et al., Optical: University of Potsdam/A. Mellinger)

Chandra X-ray Image with Scale Bar

Scale bar = 4 arcmin
(Credit: NASA/GSFC/K.Ebisawa et al.)