In [6]:

    

import numpy as np
import pylab as plt

ra = np.linspace(-np.pi, np.pi, 40)
dec= np.linspace(-np.pi/2, np.pi/2, 20)
X,Y = np.meshgrid(ra,dec)
Z = np.sin(X) * np.cos(X) * np.sin(Y) * np.cos(Y)

plt.figure(figsize=(13,10))
ax = plt.subplot(111, projection = 'mollweide')
ax.contourf(X,Y,Z,100)
ax.contour(X,Y,Z,10,colors='k')

plt.show()


    

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