Representations of world coordinates in FITS | Astronomy & Astrophysics (A&A)

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Calabretta"> <meta name="citation_author_institution" content="Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia"> <meta name="citation_title" content="Representations of world coordinates in FITS"> <meta name="citation_online_date" content="2002/11/18"> <meta name="citation_publication_date" content="2002/12/01"> <meta name="citation_volume" content="395"> <meta name="citation_issue" content="3"> <meta name="citation_firstpage" content="1061"> <meta name="citation_lastpage" content="1075"> <meta name="citation_doi" content="10.1051/0004-6361:20021326"> <meta name="citation_bibcode" content="2002A%26A...395.1061G"> <meta name="citation_abstract_html_url" content="https://www.aanda.org/articles/aa/abs/2002/45/aah3859/aah3859.html"> <meta name="citation_pdf_url" content="https://www.aanda.org/articles/aa/pdf/2002/45/aah3859.pdf"> <meta name="citation_issn" content="0004-6361"> <meta name="citation_issn" content="1432-0746"> <meta name="citation_language" content="en"> <meta name="citation_keyword" content="methods: data analysis"> <meta name="citation_keyword" content="techniques: image processing"> <meta name="citation_keyword" content="astronomical data bases: miscellaneous"> <meta name="citation_article_type" content="Research Article"> <meta name="citation_abstract" lang="en" content="The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image coordinates. Building on conventions in wide use within astronomy, this paper proposes general extensions to the original methods for describing the world coordinates of FITS data. In subsequent papers, we apply these general conventions to the methods by which spherical coordinates may be projected onto a two-dimensional plane and to frequency/wavelength/velocity coordinates."> <meta name="citation_reference" content="Adobe Systems, Inc. 1999, PostScript Language Reference Manual, Third ed. (Addison-Wesley Publishing Company, Inc.), Reading, Massachusetts (see especially pages 293-296)"> <meta name="citation_reference" content="citation_author=M. R. Calabretta;citation_author=E. W. Greisen;citation_publication_date=2002;citation_journal_title=A&A;citation_volume=395;citation_firstpage=1077;"> <meta name="citation_reference" content="Calabretta, M. 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W. Greisen</span><sup>1</sup> and <span id="aah3859-author-2" data-url="/component/author/?dkey=10.1051/0004-6361:20021326&n=2" class="author">M. R. Calabretta</span><sup>2</sup></p></div> <p class="aff"> <sup>1</sup> National Radio Astronomy Observatory, PO Box O, Socorro, NM 87801-0387, USA <br> <sup>2</sup> Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia <br></p> <p class="corresp">Corresponding author: E. W. Greisen, egreisen@nrao.edu </p> <p class="history"><span class="bold">Received: </span> 24 July 2002 <br><span class="bold">Accepted: </span> 9 September 2002 </p> <p class="bold"><a name="abs"></a>Abstract</p> <p>The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image coordinates. Building on conventions in wide use within astronomy, this paper proposes general extensions to the original methods for describing the world coordinates of FITS data. In subsequent papers, we apply these general conventions to the methods by which spherical coordinates may be projected onto a two-dimensional plane and to frequency/wavelength/velocity coordinates. </p> <div class="kword"><p><span class="bold">Key words: </span>methods: data analysis / techniques: image processing / astronomical data bases: miscellaneous</p></div> </div> <p><i>© ESO, 2002</i></p> </div> </div> <div id="metrics-tabs" data-doi="10.1051/0004-6361:20021326" data-edps_ref="aah3859"> <nav class="toolbar"> <button class="toolbar-item" id="metrics-siq">Current usage metrics</button> <button class="toolbar-item" id="info">About article metrics</button> <button class="toolbar-item" id="return">Return to article</button> </nav> <div class="panel" data-for="metrics-siq"> </div> <div class="panel" data-for="metrics-alm"></div> <div class="panel" data-for="info"> <p>Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.</p> <p>Data correspond to usage on the plateform after 2015. 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Representations of world coordinates in FITS | Astronomy & Astrophysics (A&A)