Install dpuser-doc by entering the following commands in the terminal:
sudo apt update sudo apt install dpuser-doc
Description:
Documentation for DPUSER and QFitsView
DPUSER is an interactive language capable of handling numbers (both real and complex), strings, and matrices. Its main aim is to do astronomical image analysis, for which it provides a comprehensive set of functions, but it can also be used for many other applications. . This package contains the documentation for DPUSER and QFitsView.
Homepage: http://www.mpe.mpg.de/~ott/dpuser/index.html
Version: 3.3+p1+dfsg-2build1
Section: universe/doc