Pix2Sky_Parabolic¶
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class
astropy.modeling.projections.Pix2Sky_Parabolic(*args, meta=None, name=None, **kwargs)[source] [edit on github]¶ Bases:
astropy.modeling.projections.Pix2SkyProjection,astropy.modeling.projections.PseudoCylindricalParabolic projection - pixel to sky.
Corresponds to the
PARprojection in FITS WCS.\[\begin{split}\phi &= \frac{180^\circ}{\pi} \frac{x}{1 - 4(y / 180^\circ)^2} \\ \theta &= 3 \sin^{-1}\left(\frac{y}{180^\circ}\right)\end{split}\]Methods Summary
evaluate(x, y)Evaluate the model on some input variables. Methods Documentation
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classmethod
evaluate(x, y)[source] [edit on github]¶ Evaluate the model on some input variables.
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classmethod