Work

Representations of world coordinates in FITS

Year: 2002

Type: article

Abstract: 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.

Source: Astronomy and Astrophysics

DOI: 10.1051/0004-6361:20021326

Authors: E. W. Greisen, M. R. Calabretta

Institutions: National Radio Astronomy Observatory, Australia Telescope National Facility

Language: English

Topic: Astronomy and Astrophysical Research

Subfield: Instrumentation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Aeronautics and Space Administration, Space Telescope Science Institute, Goddard Space Flight Center

OpenAlex ID: W2051633863