My real name is Christian Hupfer too and I am a former Astrophysicist, but I quit the university and research after I've obtained my PhD (German "Doktor rer. nat.").
You can contact me by mail: email@example.com -- or via contact form on my website.
Nowadays I work as a teacher of Physics and Mathematics at a "Berufliches Gymnasium" near my beautiful region of Black Forest in Baden-Württemberg in Southern Germany, the pupils/students are basically at the age of 16 up to 20 years old and will graduate with A-Level ("Abitur/Matura") and may study at the universities after that.
All of my worksheets, class tests and books/articles are generated via LaTeX - I use it since 1997.
I am the author of following packages
They can be found on CTAN and on TeXlive as well.
I am aware that I could have gained more reputation and badges, but I answer basically unsexy questions about macros, tables and ToC related stuff, so my reputation and badge count is quite low compared to many others.
But I am the number 25 who got the [Epic] badge ;-)