tan_to_lb

ssapy.utils.tan_to_lb(xx, yy, lcen, bcen)

Convert orthographic tangent plane coordinates to lb coordinates.

Parameters:

• xx (array_like (n)) – tangent plane x coordinate (radians)

• yy (array_like (n)) – targent plane y coordinate (radians

• lcen (float, array_like (n)) – right ascension of center of tangent plane

• bcen (float, array_linke (n)) – declination of center of tangent plane

Returns:

• lb (array_like (n)) – right ascension corresponding to xx, yy

• b (array_like (n)) – declination corresponding to xx, yy