Photutils is a Python library that provides commonly-used tools and key functionality for detecting and performing photometry of astronomical sources. Tools are provided for background estimation, star finding, source detection and extraction, aperture photometry, PSF photometry, image segmentation, centroids, radial profiles, and elliptical isophote fitting. It is a coordinated package of Astropy and integrates well with other Astropy packages, making it a powerful tool for astronomical image analysis.

Please see the online documentation for installation instructions and usage information.

If you use Photutils for a project that leads to a publication, whether directly or as a dependency of another package, please include the following acknowledgment:

This research made use of Photutils, an Astropy package for
detection and photometry of astronomical sources (Bradley et al.
<YEAR>).

where (Bradley et al. <YEAR>) is a citation to the Zenodo record of the Photutils version that was used. We also encourage citations in the main text wherever appropriate.

Photutils is licensed under a 3-clause BSD license. Please see the LICENSE file for details.