Pix2Sky_HammerAitoff¶
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class
astropy.modeling.projections.Pix2Sky_HammerAitoff[source] [edit on github]¶ Bases:
astropy.modeling.projections.Pix2SkyProjection,astropy.modeling.projections.PseudoCylindricalHammer-Aitoff projection - pixel to sky.
Corresponds to the
AITprojection in FITS WCS.\[\begin{split}\phi &= 2 \arg \left(2Z^2 - 1, \frac{\pi}{180^\circ} \frac{Z}{2}x\right) \\ \theta &= \sin^{-1}\left(\frac{\pi}{180^\circ}yZ\right)\end{split}\]Methods Summary
evaluate(x, y)Methods Documentation
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classmethod
evaluate(x, y)[source] [edit on github]¶
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classmethod