Bases: astropy.modeling.projections.Pix2SkyProjection, astropy.modeling.projections.Conic
Colles’ conic perspective projection - pixel to sky.
Corresponds to the COP projection in FITS WCS.
See Conic for a description of the entire equation.
The projection formulæ are:
C &= \sin \theta_a \\ R_\theta &= \frac{180^\circ}{\pi} \cos \eta [ \cot \theta_a - \tan(\theta - \theta_a)] \\ Y_0 &= \frac{180^\circ}{\pi} \cos \eta \cot \theta_a
Parameters: | sigma : float
delta : float
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Attributes Summary
param_names |
Methods Summary
evaluate(x, y, sigma, delta) |
Attributes Documentation
Methods Documentation