Sky2Pix_SlantZenithalPerspective#

class astropy.modeling.projections.Sky2Pix_SlantZenithalPerspective(*args, **kwargs)[source]#

Bases: Sky2PixProjection, Zenithal

Zenithal perspective projection - sky to pixel.

Corresponds to the SZP projection in FITS WCS.

Parameters:

mufloat: distance from point of projection to center of sphere in spherical radii, μ. Default is 0.
phi0float: The longitude φ₀ of the reference point, in degrees. Default is 0°.
theta0float: The latitude θ₀ of the reference point, in degrees. Default is 90°.

Attributes Summary

`mu`
`param_names`	Names of the parameters that describe models of this type.
`phi0`
`theta0`

Attributes Documentation

mu = _ParameterDS('mu', value=0.0)#

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

Names of the parameters that describe models of this type.

The parameters in this tuple are in the same order they should be passed in when initializing a model of a specific type. Some types of models, such as polynomial models, have a different number of parameters depending on some other property of the model, such as the degree.

When defining a custom model class the value of this attribute is automatically set by the Parameter attributes defined in the class body.

phi0 = _ParameterDS('phi0', value=0.0)#

theta0 = _ParameterDS('theta0', value=0.0)#