Sky2Pix_ZenithalEquidistant¶

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

Zenithal equidistant projection - sky to pixel.

Corresponds to the ARC projection in FITS WCS.

See Zenithal for a definition of the full transformation.

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