ds9: ds9 (Astronomical tool) ds9: ds9: SAOImageDS9 is an astronomical imaging and data visualization tool. ds9: It supports FITS images and binary tables. It also includes many ds9: advanced imaging features such as 2-D, 3-D and RGB frame buffers, ds9: mosaic images, tiling, blinking, geometric markers, colormap ds9: manipulation, scaling, arbitrary zoom, cropping, rotation, pan, and a ds9: variety of coordinate systems. DS9 also has user configurable GUI ds9: elements. ds9: Homepage: https://sites.google.com/cfa.harvard.edu/saoimageds9/home ds9: