Sherpa Threads for CIAO 4.0 Beta

Beginners should start here. The Introductory threads explain how to start Sherpa and provide an overview of using the application.

Sherpa provides extensive facilities for modeling and fitting data. The topics here range from basic fits using source spectra and responses to more advanced areas such as simultaneous fits to multiple datasets, accounting for the effects of pileup, and fitting spatial and grating data.