Sky2Pix_CylindricalPerspective¶
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class
astropy.modeling.projections.
Sky2Pix_CylindricalPerspective
(mu=1.0, lam=1.0, **kwargs)[source]¶ Bases:
astropy.modeling.projections.Sky2PixProjection
,astropy.modeling.projections.Cylindrical
Cylindrical Perspective - sky to pixel.
Corresponds to the
CYP
projection in FITS WCS.\[\begin{split}x &= \lambda \phi \\ y &= \frac{180^{\circ}}{\pi}\left(\frac{\mu + \lambda}{\mu + \cos \theta}\right)\sin \theta\end{split}\]- Parameters
- mufloat
Distance from center of sphere in the direction opposite the projected surface, in spherical radii, μ. Default is 0.
- lamfloat
Radius of the cylinder in spherical radii, λ. Default is 0.
Attributes Summary
Methods Summary
evaluate
(phi, theta, mu, lam)Evaluate the model on some input variables.
Attributes Documentation
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lam
= Parameter('lam', value=1.0)¶
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mu
= Parameter('mu', value=1.0)¶
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param_names
= ('mu', 'lam')¶
Methods Documentation