Pix2Sky_ZenithalEqualArea#

class astropy.modeling.projections.Pix2Sky_ZenithalEqualArea(*args, **kwargs)[source]#

Bases: Pix2SkyProjection, Zenithal

Zenithal equidistant projection - pixel to sky.

Corresponds to the ZEA projection in FITS WCS.

See Zenithal for a definition of the full transformation.

$$\theta ={90}^{\circ }-2{\sin }^{-1}\left(\frac{\pi R_{\theta }}{{360}^{\circ }}\right)$$