Sky2Pix_BonneEqualArea¶
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class
astropy.modeling.projections.
Sky2Pix_BonneEqualArea
[source] [edit on github]¶ Bases:
astropy.modeling.projections.Sky2PixProjection
,astropy.modeling.projections.PseudoConic
Bonne’s equal area pseudoconic projection - sky to pixel.
Corresponds to the
BON
projection in FITS WCS.\[\begin{split}x &= R_\theta \sin A_\phi \\ y &= -R_\theta \cos A_\phi + Y_0\end{split}\]where:
\[\begin{split}A_\phi &= \frac{180^\circ}{\pi R_\theta} \phi \cos \theta \\ R_\theta &= Y_0 - \theta \\ Y_0 &= \frac{180^\circ}{\pi} \cot \theta_1 + \theta_1\end{split}\]Parameters: theta1 : float
Bonne conformal latitude, in degrees.
Attributes Summary
param_names
theta1
Methods Summary
evaluate
(phi, theta, theta1)Attributes Documentation
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param_names
= ('theta1',)¶
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theta1
¶
Methods Documentation
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classmethod
evaluate
(phi, theta, theta1)[source] [edit on github]¶
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