Photutils

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.

Important

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

• Installation
• Overview
• Pixel Coordinate Conventions
• Getting Started with Photutils
• Reporting Issues and Contributing
• Citing Photutils
• License
• Changelog

User Documentation

• Background Estimation (photutils.background)
• Source Detection (photutils.detection)
• Grouping Algorithms
• Aperture Photometry (photutils.aperture)
• PSF Photometry (photutils.psf)
• Building an effective Point Spread Function (ePSF)
• PSF Matching (photutils.psf.matching)
• Image Segmentation (photutils.segmentation)
• Centroids (photutils.centroids)
• Morphological Properties (photutils.morphology)
• Elliptical Isophote Analysis (photutils.isophote)
• Geometry Functions (photutils.geometry)
• Datasets (photutils.datasets)
• Utility Functions (photutils.utils)

• API Reference

Note

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!