FITS Image Viewers -- [free/open source - Windows, Macintosh, Unix] Download FITS viewers for various platforms. Visit

A Brief Introduction to FITS Visit

FITS archive at NRAO -- This is an archive for the Flexible Image Transport System [FITS], the standard data interchange & archival format of the worldwide astronomy community. Visit

Flexible Image Transport System (FITS) Support Office -- The format adopted by the astronomical community for data interchange & archival storage. Responsible for documenting the FITS standard, participating in its evolution, & advising NASA astrophysics missions on how to present their data in this type of format. Visit