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- Pix2Sky_ZenithalEquidistant

# Pix2Sky_ZenithalEquidistant

class astropy.modeling.projections.Pix2Sky_ZenithalEquidistant(*args, **kwargs)

  Bases: `Pix2SkyProjection`, `Zenithal`

  Zenithal equidistant projection - pixel to sky.

  Corresponds to the `ARC` projection in FITS WCS.

  See `Zenithal` for a definition of the full transformation.

  \[\theta = 90^\circ - R_\theta\]