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What are the returns from fit_im? #9

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@keflavich

Could you provide some narrative documentation for the returns from fit_im?

res = (stars, model+sky, sky+msky, psf)
return res

My attempt:

  • stars is the star catalog
  • model + sky is the sum of the stellar model and the "background" model
  • sky + msky is the .... sky model? It's low-resolution. I'm not sure how to differentiate sky, msky, and model, though I suspect model is the stars-only image?
  • psf is the fitted PSF (or the original PSF if refitting isn't used)

Which return value would you consider the best representation of the star-subtracted image? i.e., the best representation of the extended emission?

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