Sky2Pix_AZP¶
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class
astropy.modeling.projections.
Sky2Pix_AZP
[source] [edit on github]¶ Bases:
astropy.modeling.projections.Sky2PixProjection
,astropy.modeling.projections.Zenithal
AZP : Zenithal perspective projection - sky to pixel.
x &= R \sin \phi \\ y &= -R \sec \gamma \cos \theta
where:
R = \frac{180^{\circ}}{\pi} \frac{(\mu + 1) \cos \theta}{(\mu + \sin \theta) + \cos \theta \cos \phi \tan \gamma}
Parameters: mu : float
distance from point of projection to center of sphere in spherical radii, default is 0.
gamma : float
look angle in deg, default is 0.
Attributes Summary
inverse
param_names
Methods Summary
check_mu
(val)evaluate
(phi, theta, mu, gamma)Attributes Documentation
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gamma
¶
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inverse
¶
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mu
¶
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param_names
= ('mu', 'gamma')¶
Methods Documentation
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check_mu
(val)[source] [edit on github]¶
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classmethod
evaluate
(phi, theta, mu, gamma)[source] [edit on github]¶
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