Automatic recognition of astronomical images; or standards-compliant astrometric metadata from data.

Latest release: http://astrometry.net/downloads/astrometry.net-0.50.tar.gz

If you have astronomical imaging of the sky with celestial coordinates you do not know—or do not trust—then Astrometry.net is for you. Input an image and we'll give you back astrometric calibration meta-data, plus lists of known objects falling inside the field of view.

We have built this astrometric calibration service to create correct, standards-compliant astrometric meta-data for every useful astronomical image ever taken, past and future, in any state of archival disarray. We hope this will help organize, annotate and make searchable all the world's astronomical information.

Copyright 2006-2014 Michael Blanton, David W. Hogg, Dustin Lang, Keir Mierle and Sam Roweis.

Contributions from Sjoert van Velzen, Themos Tsikas (wcs-match.c), Andrew Hood, Thomas Stibor and others.

Licensed under GPLv2. Please contact us about other licensing arrangements.

The documentation is at http://astrometry.net/doc

There is a (google group) forum at http://astrometry.net/group

Additional stuff at http://astrometry.net

Code snapshots and releases are at http://astrometry.net/downloads

The web service is at http://nova.astrometry.net

For academic use, please cite the paper:

Lang, D., Hogg, D.W., Mierle, K., Blanton, M., & Roweis, S., 2010, Astrometry.net: Blind astrometric calibration of arbitrary astronomical images, The Astronomical Journal 139, 1782--1800.

Bibtex | Bibtex@ADS | arXiv | AJ | doi:10.1088/0004-6256/139/5/1782