Bases: astropy.modeling.projections.Sky2PixProjection, astropy.modeling.projections.PseudoConic
Bonne’s equal area pseudoconic projection - sky to pixel.
Corresponds to the BON projection in FITS WCS.
x &= R_\theta \sin A_\phi \\ y &= -R_\theta \cos A_\phi + Y_0
where:
A_\phi &= \frac{180^\circ}{\pi R_\theta} \phi \cos \theta \\ R_\theta &= Y_0 - \theta \\ Y_0 &= \frac{180^\circ}{\pi} \cot \theta_1 + \theta_1
Parameters: | theta1 : float
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Attributes Summary
param_names | |
theta1 |
Methods Summary
evaluate(phi, theta, theta1) |
Attributes Documentation
Methods Documentation