ACIS-S Chandra 50 ks image (left panel) and XRT 34 ks image (right panel) of SWXCS J123630+2859.1 at z_spec = 0.23. Both images are in the soft [0.5–2] keV band and Gaussian smoothed with a FWHM of 10 and 5 arcsec respectively. The scale of the image is 7 arcmin. The difference of the image quality is striking due to the two order of magnitude difference in angular resolution, however the quality of the spectral analysis based on these data is comparable owing to the low XRT background and good hard energy response (see text).