Sky2Pix_ZenithalEquidistant

class astropy.modeling.projections.Sky2Pix_ZenithalEquidistant(*args, **kwargs)[source]

Bases: astropy.modeling.projections.Sky2PixProjection, astropy.modeling.projections.Zenithal

Zenithal equidistant projection - sky to pixel.

Corresponds to the ARC projection in FITS WCS.

See Zenithal for a definition of the full transformation.

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