Pix2Sky_CylindricalEqualArea

class astropy.modeling.projections.Pix2Sky_CylindricalEqualArea(lam=1, **kwargs)

Bases: astropy.modeling.projections.Pix2SkyProjection, astropy.modeling.projections.Cylindrical

Cylindrical equal area projection - pixel to sky.

Corresponds to the CEA projection in FITS WCS.

\[\begin{split}\phi &= x \\ \theta &= \sin^{-1}\left(\frac{\pi}{180^{\circ}}\lambda y\right)\end{split}\]

Parameters:

lam : float

Radius of the cylinder in spherical radii, λ. Default is 0.

Attributes Summary

lam
param_names

Methods Summary

evaluate(x, y, lam)

Evaluate the model on some input variables.

Attributes Documentation

lam = Parameter('lam', value=1.0)

param_names = ('lam',)

Methods Documentation

classmethod evaluate(x, y, lam)

Evaluate the model on some input variables.