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Representations of celestial coordinates in FITS
Open accessAbstract
In Paper I, Greisen & Calabretta ([CITE]) describe a generalized method for assigning physical coordinates to FITS image pixels. This paper implements this method for all spherical map projections likely to be of interest in astronomy. The new methods encompass existing informal FITS spherical coordinate conventions and translations from them are described. Detailed examples of header interpretation and construction are given.
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“Critically, the header sections store essential metadata as keyword / value pairs. This includes observational parameters (telescope telemetry, instrument configuration, exposure time, filters), processing history (calibration steps, software versions), and arguably most importantly, the World Coordinate System (WCS) information (Greisen and Calabretta, 2002; Calabretta and Greisen, 2002) and flux”
From A high-throughput AES-GCM implementation on GPUs for secure, policy-based access to massive astronomical catalogs (2026) · cites this paper as Calabretta and Greisen, 2002
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Cites
Schlegel, D. J., Finkbeiner, D. P., & Davis, M. (1998) · The Astrophysical Journal · doi:10.1086/305772 · Cited by 15,126
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- Greisen, E. W., Valdes, F. G., Calabretta, M. R., & Allen, S. L. 2002, Representations of spectral coordinates in FITS, A&A, in preparation · DOI · Paper page
- Greisen, 2002, A&A, 395, 1061, 10.1051/0004-6361:20021326 · DOI · Paper page
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Metadata
- Authors
- Calabretta, M. R., & Greisen, E. W.
- Affiliations
- Australia Telescope National Facility (AU)
- National Radio Astronomy Observatory (US)
- ORCID
- Greisen, E. W.
- Venue
- Astronomy & Astrophysics
- Publisher
- EDP Sciences
- Published
- 2002-11-18
- Volume
- 395
- Issue
- 3
- Pages
- 1077-1122
- ISSN
- 0004-6361 (ISSN-L)
- 1432-0746
- OpenAlex
- W2156099691
- Cited by
- 431
- References
- 1
- Citations by year
- 2026: 20 · 2025: 22 · 2024: 14 · 2023: 18 · 2022: 17 · 2021: 12 · 2020: 22 · 2019: 22 · 2018: 23 · 2017: 21 · 2016: 25 · 2015: 30 · 2014: 31 · 2013: 13 · 2012: 22
- FWCI
- 16.87
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- public-domain
- Locations
- Astronomy and Astrophysics (publishedVersion, public-domain)
- arXiv (Cornell University) (submittedVersion)
- Springer Link (Chiba Institute of Technology) (submittedVersion, public-domain)
- arXiv (Cornell University)
- Funders
- National Aeronautics and Space Administration
- Space Telescope Science Institute
- Goddard Space Flight Center
- Topics
- Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astronomical Observations and Instrumentation
- Social Sciences › Geography, Planning and Development › Historical Geography and Cartography
- Keywords
- FITS, celestial coordinates, coordinate mapping, FITS header, astronomical data formats
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- Calabretta, M. R., & Greisen, E. W. (2002). Representations of celestial coordinates in FITS. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361%3A20021327
