Pix2Sky_BonneEqualArea¶
-
class
astropy.modeling.projections.
Pix2Sky_BonneEqualArea
(theta1=0.0, **kwargs)[source] [edit on github]¶ Bases:
astropy.modeling.projections.Pix2SkyProjection
,astropy.modeling.projections.PseudoConic
Bonne’s equal area pseudoconic projection - pixel to sky.
Corresponds to the
BON
projection in FITS WCS.\[\begin{split}\phi &= \frac{\pi}{180^\circ} A_\phi R_\theta / \cos \theta \\ \theta &= Y_0 - R_\theta\end{split}\]where:
\[\begin{split}R_\theta &= \mathrm{sign} \theta_1 \sqrt{x^2 + (Y_0 - y)^2} \\ A_\phi &= \arg\left(\frac{Y_0 - y}{R_\theta}, \frac{x}{R_\theta}\right)\end{split}\]Parameters: - theta1 : float
Bonne conformal latitude, in degrees.
Attributes Summary
param_names
theta1
Methods Summary
evaluate
(x, y, theta1)Evaluate the model on some input variables. Attributes Documentation
-
param_names
= ('theta1',)¶
-
theta1
¶
Methods Documentation
-
classmethod
evaluate
(x, y, theta1)[source] [edit on github]¶ Evaluate the model on some input variables.