Sky2Pix_Mercator

class astropy.modeling.projections.Sky2Pix_Mercator(*args, **kwargs)[source] [edit on github]

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

Mercator - sky to pixel.

Corresponds to the MER projection in FITS WCS.

\[\begin{split}x &= \phi \\ y &= \frac{180^{\circ}}{\pi}\ln \tan \left(\frac{90^{\circ} + \theta}{2}\right)\end{split}\]

Methods Summary

evaluate(phi, theta)

Methods Documentation

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