Sky2Pix_HammerAitoff¶
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class
astropy.modeling.projections.Sky2Pix_HammerAitoff(*args, meta=None, name=None, **kwargs)[source] [edit on github]¶ Bases:
astropy.modeling.projections.Sky2PixProjection,astropy.modeling.projections.PseudoCylindricalHammer-Aitoff projection - sky to pixel.
Corresponds to the
AITprojection in FITS WCS.\[\begin{split}x &= 2 \gamma \cos \theta \sin \frac{\phi}{2} \\ y &= \gamma \sin \theta\end{split}\]where:
\[\gamma = \frac{180^\circ}{\pi} \sqrt{\frac{2}{1 + \cos \theta \cos(\phi / 2)}}\]Methods Summary
evaluate(phi, theta)Evaluate the model on some input variables. Methods Documentation
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classmethod
evaluate(phi, theta)[source] [edit on github]¶ Evaluate the model on some input variables.
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classmethod