My Stellar Astrophysics prof wrote his textbook in TeXPad back in it's early days. Between that, his iPad, and a bluetooth keyboard case, he wrote the entire bo

My Stellar Astrophysics prof wrote his textbook in TeXPad back in it's early days. Between that, his iPad, and a bluetooth keyboard case, he wrote the entire book over the course of 2 years I think. Aside from some final polish, diagrams, and various references, all text was written on the go. This is the book itself: https://www.springer.com/us/book/9781441999900#aboutBook https://www.springer.com/us/book/9781441999900#aboutBook