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Representing the ‘Butterfly’ Projection in FITS—Projection Code XPH

  • Mark R. Calabretta (a1) and Stuart R. Lowe (a2)
Abstract

The ‘butterfly’ projection is constructed as the polar layout of the HEALPix projection with (H, K) = (4, 3). This short article formalises its representation in FITS.

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Copyright
Corresponding author
3 Corresponding author. Email: mcalabre@atnf.csiro.au
References
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Calabretta, M. R., 1995–2013, WCSLIB version 4.18, available from www.atnf.csiro.au/people/Mark.Calabretta
Calabretta, M. R., & Greisen, E. W. 2002, A&A, 395, 1077
Calabretta, M. R., & Roukema, B. F. 2007, MNRAS, 381, 865
Pence, W. D., Chiappetti, L., Page, C. G. Shaw, R. A., & Stobie, E. 2010, A&A, 524, A42
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Publications of the Astronomical Society of Australia
  • ISSN: 1323-3580
  • EISSN: 1448-6083
  • URL: /core/journals/publications-of-the-astronomical-society-of-australia
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