An extended re-implementation of Gavazzi et al's RingFinder galaxy-scale strong gravitational lens detection robot. Subtract red light from blue, analyze residuals, classify.
Being able to visualize residuals in color is key: if they are not consistent with achromatic gravitational lensing, the system may be classified as a non-lens.
Being able to visualize residuals in color is key: if they are not consistent with achromatic gravitational lensing, the system may be classified as a non-lens.