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- Pix2Sky_HEALPixPolar

# Pix2Sky_HEALPixPolar

class astropy.modeling.projections.Pix2Sky_HEALPixPolar(*args, **kwargs)

  Bases: `Pix2SkyProjection`, `HEALPix`

  HEALPix polar, aka “butterfly” projection - pixel to sky.

  Corresponds to the `XPH` projection in FITS WCS.