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Keck-DataReductionPipelines / KCWI_DRP

KCWI python DRP
BSD 3-Clause "New" or "Revised" License
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Feature Request: Option of manual spline fitting for flux calibration #157

Open rremigio opened 1 year ago

rremigio commented 1 year ago

For observations around ~9000 A, there are a lot of absorption features present in observed spectra that make it difficult to fit the continuum over the wavelength range with the current routine of fitting a polynomial over the unmasked regions using the data points. bd28

I was wondering if it would be possible to implement the ability to fit a spline to the standard star continuum, but allow the user to manually set anchor/knot points on the spline. There will be times where large chunks of the observed spectrum will have to be masked out due to telluric features, and I think this would at least make it easier to constrain/interpolate the continuum over these bands.

A good example of this is realmkfluxstar.pro as part of this old IDL routine.

michaelcmcdonald73 commented 1 year ago

Hello,

I just want to second this request. I am having similar issues and this feature would be useful. Thanks!