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waqasbhatti / cdips-pipeline

Port of the HATPI pipeline for CDIPS Project TESS image-subtraction reductions
MIT License
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Incorporate `tess-backdrop` #34

Open lgbouma opened 2 years ago

lgbouma commented 2 years ago

See: https://ssdatalab.github.io/tess-backdrop/

By eye, this looks like a better initial subtraction model than the 2d median filter that IIRC the pipeline is doing now.

lgbouma commented 2 years ago

Alternatively: for the smooth component consider linearly interpolating over a source-masked image, per Sec 3.2 of https://arxiv.org/abs/2111.15006.

Best of both worlds: look at goodness of fit metrics for all three approaches. (2dmedian+local annuli; tess-backdrop; linear interpolation).

Nb. these changes will need to be propagated to the BGV column in the fits files.