Sky2Pix_ZenithalEqualArea¶
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class
astropy.modeling.projections.Sky2Pix_ZenithalEqualArea(*args, meta=None, name=None, **kwargs)[source] [edit on github]¶ Bases:
astropy.modeling.projections.Sky2PixProjection,astropy.modeling.projections.ZenithalZenithal equidistant projection - sky to pixel.
Corresponds to the
ZEAprojection in FITS WCS.See
Zenithalfor a definition of the full transformation.\[\begin{split}R_\theta &= \frac{180^\circ}{\pi} \sqrt{2(1 - \sin\theta)} \\ &= \frac{360^\circ}{\pi} \sin\left(\frac{90^\circ - \theta}{2}\right)\end{split}\]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