Tools to do PSF photometry on Roman simulated data from TRExS group.
The PSF toosl are based on PSFMachine.
This package can be intalled using the pip command from this repository.
pip install roman-lcs
For a full tutorial on how to build a PRF model, evaluate it to compute the photometry, and build light curves, see the this Jupyter notebook
The simulated images are produced by the RimTimSim package.
Here's an example image:
The PRF model is computed from the image itself, using the source catalog to fix the stars positions and fitting all sources at the same time to get the PRF model. See the figure below for a PRF example:
Light curves are computed by fitting the PRF at every frame and saved into FITS files.
