Sky2Pix_SlantZenithalPerspective

class astropy.modeling.projections.Sky2Pix_SlantZenithalPerspective(mu=0.0, phi0=0.0, theta0=0.0, **kwargs)

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

Zenithal perspective projection - sky to pixel.

Corresponds to the SZP projection in FITS WCS.

Parameters:

mu : float

distance from point of projection to center of sphere in spherical radii, μ. Default is 0.

phi0 : float

The longitude φ₀ of the reference point, in degrees. Default is 0°.

theta0 : float

The latitude θ₀ of the reference point, in degrees. Default is 90°.

Attributes Summary

mu
param_names
phi0
theta0

Methods Summary

evaluate(phi, theta, mu, phi0, theta0)

Attributes Documentation

mu

param_names = ('mu', 'phi0', 'theta0')

phi0

theta0

Methods Documentation

classmethod evaluate(phi, theta, mu, phi0, theta0)