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rmjarvis
PSFs In the Full FOV. A software package for modeling the point-spread function (PSF) across the full field of view (FOV). Documentation:
I have modified optics_model to include a more accurate and flipped/transposed image DECam pupil as well as a map of the Blanco mirror figure. The unit test in test_optics.py are...
Under seemingly normal processing, piff outputs log messages that appear to have incorrect log levels. `warning` for the iteration numbers and total chi2, and `info` for statements about ill-conditioned matrices...
In the Y6 testing, we discovered (due to a different bug that was fixed in #136) that the weight adjustment we do to bring nominal S/N values down to the...
We are using Piff in Rubin processing, and have discovered that the model fit for a `size=25` `PixelGrid` catastrophically fails, without any clear indication of the error from Piff itself....
Hello - @mcclearyj and I are interested in replacing PSFEx in a measurement we are working on with Piff due to the same issues found in the DES SV/Y1 analysis...
We can use N-fold cross-validation to do hacky regularization. sklearn has a lot of nice tools for thus. More or less, you can use a GridSearchCV object to do this....
Can we add `__eq__` methods to Piff objects? I wanted to write a test over in Rubin-land that roundtrip serialization to FITS (using the Rubin framework) works, but was stymied...
Erin's photometry tests show that 17x17 PIFF PSFs are not large enough to capture behavior of aperture vs PSF mags properly. It might be very useful to add to the...
Right now our PSF models are all normalized to have unit integral. @erykoff has explained that this isn't the right thing if you expect to get accurate photometry at the...
I believe the `OptAtmoPSF` can be divided into two separate pieces: 1) Fitting optics parameters and simultaneously fitting tied atmospheric parameters for every star. 2) Independently fitting atmospheric parameters for...