Repositories list

• photutils

  Public
  Astropy package for source detection and photometry. Maintainer: @larrybradley

  pythonastronomyphotometry+ 3

  pythonastronomyphotometryastropyastropy-affiliatedsource-detection

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •149•292•37•4•Updated Mar 10, 2026Mar 10, 2026

• astroquery

  Public
  Functions and classes to access online data resources. Maintainers: @keflavich and @bsipocz and @ceb8

  pythonastronomyastropy+ 2

  pythonastronomyastropyastropy-affiliatedclosember

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •434•772•364•42•Updated Mar 10, 2026Mar 10, 2026

• astropy

  Public
  Astronomy and astrophysics core library

  pythonscienceastronomy+ 2

  pythonscienceastronomyastrophysicsastropy

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •2k•5.1k•1.3k•146•Updated Mar 10, 2026Mar 10, 2026

• repo_stats

  Public

  astropy/repo_stats’s past year of commit activity
  Git and citation stats for your repo and papers

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •6•4•0•0•Updated Mar 10, 2026Mar 10, 2026

• ccdproc

  Public
  Astropy affiliated package for reducing optical/IR CCD data

  pythonastronomyccd+ 1

  pythonastronomyccdastropy-affiliated

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •89•93•67•6•Updated Mar 9, 2026Mar 9, 2026

• astropy-healpix

  Public

  astropy/astropy-healpix’s past year of commit activity
  BSD-licensed HEALPix for Astropy - maintained by @astrofrog and @lpsinger

  pythonhealpixastropy

  pythonhealpixastropy

  C

  •

  BSD 3-Clause "New" or "Revised" License

  •24•60•26•1•Updated Mar 9, 2026Mar 9, 2026

• astropy-iers-data

  Public
  IERS data maintained by @astrofrog and astropy.utils.iers maintainers

  astropyiers

  astropyiers

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •9•3•3•1•Updated Mar 9, 2026Mar 9, 2026

• reproject

  Public
  Python-based Astronomical image reprojection :milky_way: - maintainers @astrofrog @Cadair @svank

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •70•124•70•10•Updated Mar 8, 2026Mar 8, 2026

• specreduce

  Public
  Tools for the reduction of spectroscopic observations from Optical and NIR instruments

  spectroscopyastropy

  spectroscopyastropy

  Jupyter Notebook

  •41•67•54•7•Updated Mar 7, 2026Mar 7, 2026

• astropy-project

  Public
  Documents and policies regarding the Astropy Project as a whole.

  TeX

  •

  Creative Commons Attribution 4.0 International

  •46•45•70•12•Updated Mar 5, 2026Mar 5, 2026

• extension-helpers

  Public
  Helpers to assist with building Python packages with compiled C/Cython extensions

  python

  python

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •14•17•5•3•Updated Mar 5, 2026Mar 5, 2026

• astropy-figure-tests

  Public
  Truth images for visualization tests in CircleCI

  BSD 3-Clause "New" or "Revised" License

  •4•1•0•0•Updated Mar 3, 2026Mar 3, 2026

• halotools

  Public
  Python package for studying large scale structure, cosmology, and galaxy evolution using N-body simulations and halo models

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •68•117•61•3•Updated Mar 2, 2026Mar 2, 2026

• asdf-astropy

  Public
  This is the extension library for ASDF to provide support for Astropy.

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •20•19•13•3•Updated Mar 2, 2026Mar 2, 2026

• astropy-sphinx-theme

  Public
  Standalone version of the Astropy sphinx theme

  JavaScript

  •

  BSD 3-Clause "New" or "Revised" License

  •20•5•14•3•Updated Mar 2, 2026Mar 2, 2026

• regions

  Public
  Astropy package for region handling Maintainers: @larrybradley @keflavich

  astronomyregionastropy+ 1

  astronomyregionastropyastropy-affiliated

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •57•65•51•9•Updated Mar 2, 2026Mar 2, 2026

• pytest-remotedata

  Public
  Pytest plugin to control whether tests are run that have remote data

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •17•23•6•1•Updated Mar 2, 2026Mar 2, 2026

• specutils

  Public
  An Astropy coordinated package for astronomical spectroscopy. Maintainers: @rosteen @keflavich @eteq

  astropy

  astropy

  Python

  •132•195•200•13•Updated Mar 2, 2026Mar 2, 2026

• ccd-reduction-and-photometry-guide

  Public
  Read the CCD guide here:

  pythontutorialastronomy+ 4

  pythontutorialastronomyguideccdastropylearn-astropy

  Jupyter Notebook

  •

  BSD 3-Clause "New" or "Revised" License

  •56•107•30•3•Updated Mar 1, 2026Mar 1, 2026

• pytest-astropy

  Public
  Metapackage for all the testing machinery used by the Astropy Project

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •13•5•2•0•Updated Mar 1, 2026Mar 1, 2026

• sphinx-automodapi

  Public
  Sphinx extension for generating API documentation

  pythondocumentationsphinx

  pythondocumentationsphinx

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •48•66•48•0•Updated Mar 1, 2026Mar 1, 2026

• sphinx-astropy

  Public
  Sphinx functionality for Astropy

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •20•6•11•2•Updated Mar 1, 2026Mar 1, 2026

• astropy-data

  Public
  The source for the astropy data repository (although the primary server is not on github)

  CSS

  •62•13•6•2•Updated Mar 1, 2026Mar 1, 2026

• astroplan

  Public
  Observation planning package for astronomers – maintainer @bmorris3

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •120•220•52•20•Updated Mar 1, 2026Mar 1, 2026

• pyvo

  Public
  An Astropy affiliated package providing access to remote data and services of the Virtual Observatory (VO) using Python.

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •57•84•72•4•Updated Feb 27, 2026Feb 27, 2026

• SPISEA

  Public
  Stellar Population Synthesis Modeling

  Python

  •39•70•14•11•Updated Feb 26, 2026Feb 26, 2026

• astropy.github.com

  Public
  The Astropy web pages

  HTML

  •

  BSD 3-Clause "New" or "Revised" License

  •106•47•25•6•Updated Feb 4, 2026Feb 4, 2026

• astrowidgets

  Public
  *PRE-ALPHA*/heavy dev. Jupyter widgets leveraging the Astropy ecosystem

  visualizationimagewidget+ 3

  visualizationimagewidgetastronomyjupyter-notebookjupyterlab

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •16•35•12•3•Updated Feb 2, 2026Feb 2, 2026

• pytest-arraydiff

  Public
  pytest plugin to facilitate comparison of results to a pre-defined reference

  pytestarrayspytest-plugin

  pytestarrayspytest-plugin

  Python

  •

  Other

  •21•27•4•1•Updated Feb 2, 2026Feb 2, 2026

• pytest-filter-subpackage

  Public
  Simple pytest plugin to allow sub-packages to test to be selected with e.g. -P io.fits,modeling

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •7•5•4•0•Updated Feb 2, 2026Feb 2, 2026