Sky2Pix_Stereographic

class astropy.modeling.projections.Sky2Pix_Stereographic(*args, **kwargs)[source] [edit on github]

Bases: astropy.modeling.projections.Sky2PixProjection, astropy.modeling.projections.Zenithal

Stereographic Projection - sky to pixel.

Corresponds to the STG projection in FITS WCS.

See Zenithal for a definition of the full transformation.

\[R_\theta = \frac{180^{\circ}}{\pi}\frac{2 \cos \theta}{1 + \sin \theta}\]

Methods Summary

evaluate(phi, theta)

Methods Documentation

classmethod evaluate(phi, theta)[source] [edit on github]