Pix2Sky_SansonFlamsteed

class astropy.modeling.projections.Pix2Sky_SansonFlamsteed(*args, **kwargs)

Bases: Pix2SkyProjection, PseudoCylindrical

Sanson-Flamsteed projection - pixel to sky.

Corresponds to the SFL projection in FITS WCS.

\[\begin{split}\phi &= \frac{x}{\cos y} \\ \theta &= y\end{split}\]