Opera (Open-source Pipeline for Espadons Reduction and Analysis) is an Open Source software reduction pipeline for the ESPaDOnS spectro-polarimeter at the Canada France Hawaii Telescope.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.