Pix2Sky_Gnomonic¶

class astropy.modeling.projections.Pix2Sky_Gnomonic(*args, **kwargs)[source]¶

Gnomonic projection - pixel to sky.

Corresponds to the TAN projection in FITS WCS.

See Zenithal for a definition of the full transformation.

\[\theta = \tan^{-1}\left(\frac{180^{\circ}}{\pi R_\theta}\right)\]