Bases: astropy.coordinates.transformations.CoordinateTransform
A coordinate transformation defined as a 3 x 3 cartesian transformation matrix.
fromsys : class
The coordinate system class to start from.
tosys : class
The coordinate system class to transform into.
matrix : array-like
A 3 x 3 matrix for transforming 3-vectors. In most cases will be unitary (although this is not strictly required).
priority : number
The priority if this transform when finding the shortest coordinate tranform path - large numbers are lower priorities.
ValueError :
If the matrix is not 3 x 3