Improving HST PSF - Githubissues

CosmoStat / ShapeDeconv

Repo for Machine Learning-based deconvolution

MIT License

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Improving HST PSF #6

Closed fadinammour closed 3 years ago

fadinammour commented 3 years ago

The current HST PSF (which is Gaussian) is too big. We would like to replace it with an optimally smaller PSF that will be used for all the HST images.

Link to a Jupyter Notebook generate a minimal isotropic COSMOS PSF: https://github.com/ml4astro/galaxy2galaxy/blob/master/notebooks/BuildingCOSMOS_PSF.ipynb

Link to integrate the PSF to a galaxy2galaxy problem using a fits file: https://github.com/ml4astro/galaxy2galaxy/blob/6d8b20722a5545c8c79a19cb67c6131c061763ed/galaxy2galaxy/data_generators/cosmos.py#L172

[x] Adapt the first notebook to generate a minimal isotroptic COSMOS PSF for HST
[x] Compare the COSMOS PSF to the Gaussian PSF and the true HST PSF and check if it's smaller than the Gaussian one.

fadinammour commented 3 years ago

The comparison of the COSMOS and the Gaussian PSF is performed in: https://github.com/CosmoStat/ShapeDeconv/blob/d704b2d237269e241994867384822be4c61e836f/data/BuildingCOSMOS_PSF.ipynb#L507