C4 and F1 use identical starts, source roles, priors, masks, noise and100 native Adam steps. These preparation controls precede the later full-generation background rebuild.
C4: underlying observed data, full model and residual. Only the template changed; background remains original.C4: new minus old stacks on a shared difference scale. These are different observed images.C4 old template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.C4 old template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.C4 new template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.C4 new template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.F1: underlying observed data, full model and residual. Only the template changed; background remains original.F1: new minus old stacks on a shared difference scale. These are different observed images.F1 old template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.F1 old template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.F1 new template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.F1 new template-only, native17 100-step control. Common masks, noise, stars and denominator; legacy display bins.
