- class sunpy.coordinates.NorthOffsetFrame(*args, **kwargs)¶
A frame which is offset from another frame such that it shares the same origin, but has its “north pole” (i.e., the Z axis) in a different direction.
The original coordinate frame and the direction of the new north pole are specified by the
This class should be used when specifying a new north pole is natural. In constrast, for shifting the origin in the projected sky (e.g., where helioprojective X and Y coordinates are zero), use
HeliographicStonyhurst) – The direction and frame for the new “north pole”.
NorthOffsetFrameis a wrapper around the
SkyOffsetFramefactory class. This class will calculate the desired coordinates of the
northkeyword argument and then create a
Using this frame is equivalent to using
lat = lat - 90*u.degfor a position of the north pole in the original northern hemisphere.