Sky2Pix_AZP

class astropy.modeling.projections.Sky2Pix_AZP

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

AZP : Zenithal perspective projection - sky to pixel.

x &= R \sin \phi \\ y &= -R \sec \gamma \cos \theta

where:

R = \frac{180^{\circ}}{\pi} \frac{(\mu + 1) \cos \theta}{(\mu + \sin \theta) + \cos \theta \cos \phi \tan \gamma}

Parameters:

mu : float

distance from point of projection to center of sphere in spherical radii, default is 0.

gamma : float

look angle in deg, default is 0.

Attributes Summary

inverse
param_names

Methods Summary

check_mu(val)
evaluate(phi, theta, mu, gamma)

Attributes Documentation

gamma

inverse

mu

param_names = ('mu', 'gamma')

Methods Documentation

check_mu(val)

classmethod evaluate(phi, theta, mu, gamma)