Deblending via moment-0 map fitting

[MatthewWhiting]

An idea for deblending could be to use the tools developed for subcomponent analysis and fitting in cduchamp, but operating on the moment-0 map.

This would allow separation of obviously distinct sources that have been merged.

The trick would then be trying to assign spectra to each object. Perhaps if you do a fit, then you could assign each spatial pixel to an object based on the proportion of the total flux that each component contributes (either the total flux in the observed data, or the total of all fitted flux). The resulting spectrum is then made up of the weighted sum of all detected pixels - weighted by the pixel's proportional contribution.