python3-gwcs 0.18.3-1 (amd64 binary) in ubuntu lunar

 GWCS takes a general approach to WCS. It supports a data model which includes
 the entire transformation pipeline from input coordinates (detector by
 default) to world coordinates. The goal is to provide a flexible toolkit
 which is easily extendible by adding new transforms and frames.
 .
 This package contains the Python 3 version of the package.