Photutils is an affiliated package of Astropy that primarily provides tools for detecting and performing photometry of astronomical sources. It is an open source Python package and is licensed under a 3-clause BSD license.


If you use Photutils for a project that leads to a publication, whether directly or as a dependency of another package, please include an acknowledgment and/or citation.

Getting Started

User Documentation

Developer Documentation


Like much astronomy software, Photutils is an evolving package. The developers make an effort to maintain backwards compatibility, but at times the API may change if there is a benefit to doing so. If there are specific areas you think API stability is important, please let us know as part of the development process.