Bases: astropy.modeling.projections.Sky2PixProjection, astropy.modeling.projections.PseudoCylindrical
Parabolic projection - sky to pixel.
Corresponds to the PAR projection in FITS WCS.
x &= \phi \left(2\cos\frac{2\theta}{3} - 1\right) \\ y &= 180^\circ \sin \frac{\theta}{3}
Methods Summary
evaluate(phi, theta) |
Methods Documentation