HEALPix: A Hierarchical Equal Area Pixelisation Algorithm for Spherical Data
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Summary
HEALPix (Hierarchical Equal Area isoLatitude Pixelisation of a 2-sphere) is an algorithm for pixelisation of the 2-sphere and associated map projections, devised in 1997 by Krzysztof M. Górski at the Theoretical Astrophysics Center in Copenhagen, Denmark. It provides a hierarchical, equal-area, iso-latitude pixelization scheme for spherical data, commonly used in astrophysics and cosmology for processing cosmic microwave background data and other spherical datasets.
Key quotes
· 2 pulledHEALPix (sometimes written as Healpix), an acronym for Hierarchical Equal Area isoLatitude Pixelisation of a 2-sphere, is an algorithm for pixelisation of the 2-sphere and the associated class of map projections.
The pixelisation algorithm was devised in 1997 by Krzysztof M. Górski at the Theoretical Astrophysics Center in Copenhagen, Denmark, and first published as a preprint in 1998.
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