Image 9: Residuals of the best-fit model using: g1+g2+bgnd
Using two gaussians together with a constant provides a good description of the radial profile. However, we note that the residual image still shows correlated areas. You could add further model components to the fit to account for these regions, or decide to use a different set of functions to try and describe the emission.
![[Image 9: Residuals of the best-fit model using: g1+g2+bgnd]](g2-resid.gif)