Obiwan is a Monte Carlo method for adding fake galaxies and stars to images from the Legacy Survey and re-processing the modified images with our Legacysurvey/Tractor pipeline. The pipeline forward models galaxies and stars in the multi-color images by detecting sources with Signal to Noise (S/N) greater than 6 and minimizing the regularized L2 Loss function for various models for the shapes of stars and galaxies.

Our documentation is hosted on GitHub Pages, Obiwan Docs.

• Email: desi-image-sims 'at' googlegroups.com

See the offical acknowledgements for the Legacy Survey.

obiwan is free software licensed under a 3-clause BSD-style license. For details see the LICENSE.