Sky2Pix_CylindricalEqualArea

class astropy.modeling.projections.Sky2Pix_CylindricalEqualArea(lam=1, **kwargs)

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

Cylindrical equal area projection - sky to pixel.

Corresponds to the CEA projection in FITS WCS.

\[\begin{split}x &= \phi \\ y &= \frac{180^{\circ}}{\pi}\frac{\sin \theta}{\lambda}\end{split}\]

Parameters

lamfloat

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

Attributes Summary

lam
param_names

Methods Summary

evaluate(phi, theta, lam)

Evaluate the model on some input variables.

Attributes Documentation

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

param_names = ('lam',)

Methods Documentation

classmethod evaluate(phi, theta, lam)

Evaluate the model on some input variables.