Pix2Sky_Molleweide¶
- class astropy.modeling.projections.Pix2Sky_Molleweide(*args, **kwargs)[source]¶
Bases:
Pix2SkyProjection,PseudoCylindricalMolleweide’s projection - pixel to sky.
Corresponds to the
MOLprojection in FITS WCS.\[\begin{split}\phi &= \frac{\pi x}{2 \sqrt{2 - \left(\frac{\pi}{180^\circ}y\right)^2}} \\ \theta &= \sin^{-1}\left( \frac{1}{90^\circ}\sin^{-1}\left(\frac{\pi}{180^\circ}\frac{y}{\sqrt{2}}\right) + \frac{y}{180^\circ}\sqrt{2 - \left(\frac{\pi}{180^\circ}y\right)^2} \right)\end{split}\]