ds9: ds9 (Astronomical tool) ds9: ds9: DS9 is an astronomical imaging and visualization tool. It supports ds9: the FITS format and binary tables. It includes many imaging features ds9: such as tiling, cropping, as well as advanced features such as ds9: multiple 2D, 3D, RGB frame buffers, colormap manipulation and mosaic ds9: images. DS9 also supports a variety of coordinate systems and has a ds9: user configurable interface. ds9: ds9: Homepage: http://ds9.si.edu/site/Home.html ds9: