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astro-ph.IM2013★ 84 cited
A New 1.4GHz Radio Continuum Map of the Sky South of Declination +25 deg
Mark R. Calabretta, Lister Staveley-Smith, David G. Barnes
Archival data from the HI Parkes All-Sky Survey (HIPASS) and the HI Zone of Avoidance (HIZOA) survey have been carefully reprocessed into a new 1.4GHz continuum map of the sky sout…
astro-ph.IM2013
Representing the "butterfly" projection in FITS - projection code XPH
Mark R. Calabretta, Stuart R. Lowe
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.