Pix2Sky_Stereographic

class astropy.modeling.projections.Pix2Sky_Stereographic(*args, meta=None, name=None, **kwargs)

Bases: astropy.modeling.projections.Pix2SkyProjection, astropy.modeling.projections.Zenithal

Stereographic Projection - pixel to sky.

Corresponds to the STG projection in FITS WCS.

See Zenithal for a definition of the full transformation.

\[\theta = 90^{\circ} - 2 \tan^{-1}\left(\frac{\pi R_\theta}{360^{\circ}}\right)\]

Methods Summary

evaluate(x, y)

Evaluate the model on some input variables.

Methods Documentation

classmethod evaluate(x, y)

Evaluate the model on some input variables.