Nominal plan is to find N sigma of flux outside the blob and guess that it would be rendered into N pixels with 1 sigma of flux each; thus add N to chi-squared as a penalty, since the blob is assumed to contain all relevant pixels, so pixels outside the blob are assumed to be zero.
dstndstn
commented
9 years ago
To try to avoid the long needle-like galaxies.
Nominal plan is to find N sigma of flux outside the blob and guess that it would be rendered into N pixels with 1 sigma of flux each; thus add N to chi-squared as a penalty, since the blob is assumed to contain all relevant pixels, so pixels outside the blob are assumed to be zero.