[Ifeffit] Fitting on Athena

[Matt Newville]

Niken,

Have you compared MBACK to using the 'CLnorm' normalization in Athena
(found under "Background Removal Additional Parameters")?   The
algorithms are not identical, but have a lot in common, and would
probably make it easier to compare with other data in Athena.   If I
understand correctly, your sulfur spectra were not collected in
fluorescence with a solid-state detector, so that part of what MBACK
is really good at doesn't apply, and the CLnorm normalization is
pretty close to other part of MBACK.

I'd be interested to know if you or anyone else has done a careful
study comparing MBACK, CLnorm, and other normalization procedures.

--Matt