This is a installation guide on how to install HEASoft 6.22.1 and Sherpa 4.10 along with XSPEC extension. I will also suggest the solutions of various errors that you might face during the installation. We are going to install…
The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.
— Galileo Galilei